Cooper and Hunter CH-S07ZX3 UNIVERSAL PRO Series Split Air Conditioner Owner’s Manual
- June 9, 2024
- Cooper and Hunter
Table of Contents
CH-S07ZX3 UNIVERSAL PRO Series Split Air Conditioner
EN
OWNER S MANUAL
Split Air Conditioner UNIVERSAL PRO Series
.0%&-4: CH-S07ZX3
CH-S09ZX3 CH-S12ZX3 CH-S18ZX3 CH-S24ZX3 CH-S30ZX3
For proper operation, please read and keep this manual carefully.
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Installation
Installation or maintenance must be performed by qualified professionals. The appliance shall be installed in accordance with national wiring regulations. According to the local safety regulations, use qualified power supply circuit and circuit breaker. All wires of indoor unit and outdoor unit should be connected by a professional. Be sure to cut off the power supply before proceeding any work related to electricity and safety. Make sure the power supply matches with the requirement of air conditioner. Unstable power supply or incorrect wiring may result in electric shock, fire hazard or malfunction. Please install proper power supply cables before using the air conditioner.
The grounding resistance should comply with national electric safety
regulations. Air Conditioner should be properly grounded. Incorrect grounding
may cause electric shock. Do not put through the power before finishing
installation. Do install the circuit breaker. If not, it may cause
malfunction.
An all-pole disconnection switch having a contact separation of at least 3mm
in all poles should be connected in fixed wiring. Circuit breaker should be
included magnet buckle and heating buckle function. It can protect the
overload and circuit-short.
Safety precautions
CAUTION
Installation
Instructions for installation and use of this product are provided by the
manufacturer. Select a location which is out of reach for children and far
away from animals or plants. If it is unavoidable, please add the fence for
safety purpose. The indoor unit should be installed close to the wall. Don’t
use unqualified power cord. If the length of power connection wire is
insufficient, please contact the supplier for a new one. The appliance must be
positioned so that the plug is accessible. For the air conditioner with plug,
the plug should be reachable after finishing installation.
For the air conditioner without plug, a circuit breaker must be installed in the line. The yellow-green wire in air conditioner is grounding wire, which can’t be used for other purposes. The air conditioner is the first class electric appliance. It must be properly grounder with specialized grounding device by a professional. Please make sure it is always grounded effectively, otherwise it may cause electric shock. The temperature of refrigerant circuit will be high, please keep the interconnection cable away from the copper tube.
Safety precautions
WARNING
Operation and Maintenance
This appliance can be used by children aged from 8 years and above and persons with reduced physical, sensory or mental capabilities or lack of experience and knowledge if they have been given supervision or instruction concerning use of the appliance in a safe way and understand the hazards involved. Children shall not play with the appliance. Cleaning and user maintenance shall not be made by children without supervision. If the supply cord is damaged, it must be replaced by the manufacturer, its service agent or similarly qualified persons in order to avoid a hazard. Do not connect air condi-
tioner to multi-purpose socket. Otherwise, it may cause fire hazard. Do disconnect power supply when cleaning air conditioner. Otherwise, it may cause electric shock. Do not wash the air conditioner with water to avoid electric shock. Do not spray water on indoor unit. It may cause electric shock or malfunction. Do not repair air conditioner by yourself. It may cause electric shock or damage. Please contact dealer when you need to repair air conditioner. After removing the filter, do not touch fins to avoid injury. Do not extend fingers or objects into air inlet or air outlet. It may cause personal injury or damage.
3
Safety precautions
CAUTION
Operation and Maintenance
Do not spill water on the remote controller, otherwise the remote controller
may be broken. Do not use fire or hair dryer to dry the filter to avoid
deformation or fire hazard. Do not block air outlet or air inlet. It may cause
malfunction. Do not step on top panel of outdoor unit, or put heavy objects.
It may cause damage or personal injury. When below phenomenon occurs, please
turn off air conditioner and disconnect power immediately, and then contact
the dealer or qualified professionals for service.
Power cord is overheating or damaged. There’s abnormal sound during operation.
Circuit breaker trips off
frequently. Air conditioner gives off burning smell. Indoor unit is leaking.
Installation notice
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WARNING
installing keep the
or relocating the unit, refrigerant circuit free
be sfrom
air or substances other than the specified
refrigerant.
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charge the refrigerant which is not comply
with that on the nameplate or unqualified
refrigerant.
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When refrigerant needs to be recovered
during relocating or repairing the unit, be
WARNING
sure that the unit is running in cooling mode. Then, fully close the valve at
high pressure side (liquid valve). About 30-40 seconds later, fully close the
valve at low pressure side (gas valve), immediately stop the unit and
disconnect power. Please note that the time for refrigerant recovery should
not exceed 1 minute.
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that liquid valve and gas valve are fully closed and power is disconnected
before detaching the connection pipe.
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When installing the unit, make sure that connection pipe is securely connected
before the compressor starts running.
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Prohibit installing the unit at the place where there may be leaked corrosive
gas or flammable gas.
,IWKHUHLVOHDNHGJDVDURXQGWKHXQLWLWPD FDXVHH[SORVLRQDQ GoWKHUDFFLGHQWV Do not
use extension cords for electrical connections. If the electric wire is not
long enough, please contact a local service center authorized and ask for a
proper electric wire. PooUFoQQHFWLoQVPDOHDGWoHOHFWULFVKoFNoUILUH Use the
specified types of wires for electrical connections between the indoor and
outdoor units. Firmly clamp the wires so that their terminals receive no
external stresses.
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Selection of installation location
Basic requirement
Installing the unit in the following places may cause malfunction. If it is
unavoidable, please consult the local dealer: 1.The place with strong heat
sources, vapors,
flammable or explosive gas, or volatile objects spread in the air.
2.The place with high-frequency devices (such as welding machine, medical
equipment).
3.The place near coast area. 4.The place with oil or fumes in the air. 5.The
place with sulfureted gas. 6.Other places with special circumstances. 7.The
appliance shall not be installed in the
laundry. 8.It’s not allowed to be installed on the unstable
or motive base structure (such as truck) or in the corrosive environment (such
as chemical factory).
Indoor unit
1.There should be no obstruction near air inlet and air outlet.
2.Select a location where the condensation water can be dispersed easily and
won’t affect other people.
3.Select a location which is convenient to connect the outdoor unit and near
the power socket.
4.Select a location which is out of reach for children. 5.The location should
be able to withstand the
weight of indoor unit and won’t increase noise and vibration. 6.The appliance
must be installed 2.5m above floor. 7.Don’t install the indoor unit right
above the electric appliance. 8.Please try your best to keep way from
fluorescent lamp.
Safety precaution
1.Must follow the electric safety regulations when installing the unit.
2.According to the local safety regulations, use qualified power supply
circuit and air switch.
3.Make sure the power supply matches with the
requirement of air conditioner. Unstable power
supply or incorrect wiring or malfunction. Pl-
ease install proper power supply cables before
using the air conditioner.
4.Properly connect the live wire, neutral wire and
grounding wire of power socket.
5.Be sure to cut off the power supply before pr-
oceeding any work related to electricity and safety.
6.Do not put through the power before finishing
installation.
Requirements for electric connection
7.If the supply cord is damaged, it must be replaced by the manufacturer, its
service agent or similarly qualified persons in order to avoid a hazard .
8.The temperature of refrigerant circuit will be high, please keep the
interconnection cable away from the copper tube.
9.The appliance shall be installed in accordance with national wiring
regulations.
Grounding requirement
1.The air conditioner is the first class electric appliance. It must be
properly grounded with specialized grounding device by a professional. Please
make sure it is always grounded effectively, otherwise it may cause electric
shock.
2.The yellow-green wire in air conditioner is grounding wire, which can ‘t be
used for other purposes.
3.The grounding resistance should comply with national electric safety
regulations.
4.The appliance must be positioned so tha t the plug is accessible.
5.An all-pole disconnection switch having a contact separation of at least 3mm
in all poles should be connected in fixed wiring.
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Installation of indoor unit
Step 1:
Choose installation location
Recommend the installation location to the client and then confirm it with the
client.
127(
Pay attention to dust prevention and take relevant safety measures when
opening the hole.
Indoor
5-10
outdoor
Step 2:
Install wall-mounting frame
1.Hang the wall-mounting frame on the wall; adjust it in horizontal position
with the level meter and then point out the screw fixing holes on the wall.
Step 4:
Outlet pipe
1. The pipe can be led out in the direction of right, rear right, left or
rear left.
2. Drill the screw fixing holes on the wall with impact drill(the specification of drill head should be the same as the plastic expansion particle) and then fill the plastic expansion particles in the holes.
3. Fix the wall-mounting frame on the wall with tapping screws and then check if the frame is firmly installed by pulling the frame. If the plastic expansion particle is loose, please drill another fixing hole nearby.
Wall
Mark in the middle of it
Space to the wall above 150mm
Left
(Rear piping hole)
Level meter
(For some models)
Wall Space to the wall above 150mm
Right
(Rear piping hole)
Step 3:
Open piping hole
1. Choose the position of piping hole according to the direction of outlet
pipe. The position of piping hole should be a little lower than the
wall-mounted frame, shown as below.
right
left rear right
rear left
2. When select leading out the pipe from left or right, please cut off the corresponding hole on the bottom case.
left
right
cut off the hole
Step 5:
Connect the pipe of indoor unit
1. Aim the pipe joint at the corresponding bellmouth.
2. Pretighten the union nut with hand.
pipe joint union nut pipe
127(
The wall panel is for illustrative purposes only, please refer to the actual
installation.
Please refer to the actual circumstances for the number of screws and the
position of screws.
2. When installation is finished, pull the mounting plate with hand to
confirm whether it is fixed tightly. The force distribution for all screws
should be uniform.
3. Open a piping hole with the diameter of 55 or 0 on the selected outlet
pipe position. In order to drain smoothly, slan t the piping hole on the wall
slightly downward to the outdoor side with the gradient of 5-10°.
3. Adjust the torque force by referring to the following sheet. Place the open-end wrench on the pipe joint and place the torque wrench on the union nut. Tighten the union nut with torque wrench.
torque wrench
open-end wrench union nut
pipe
indoor pipe
Hex nut diameter Tightening torque (N.m)
1/4”
15~20
3/8”
30~40
1/2”
45~55
5/8”
60~65
3/4”
70~75
4. Wrap the indoor pipe and joint of connection pipe with insulating pipe, and then wrap it with tape.
insulating pipe
Step 6:
Install drain hose
1. Connect the drain hose to the outlet pipe of indoor unit.
drain hose
insulating pipe
127(
Add insulating pipe in the indoor drain hose in order to prevent condensation.
The plastic expansion particles are not provided.
Step 7:
Connect wire of indoor unit
127,&(
All wires of indoor unit and outdoor unit should be connected by a
professional.
If the length of power connection wire is insufficient, please contact the
supplier for a new one. Avoid extending the wire by yourself.
For the air conditioner with plug, the plug should be reachable after
finishing installation.
For the air conditioner without plug, an air switch must be installed in the
line. The air switch should be all-pole parting and the contact parting
distance should be more than 3mm.
1. Open the panel, remove the screw on the wiring cover and then take down the cover.
panel
screw
outlet pipe
drain hose
2. Bind the joint with tape.
drain hose outlet pipe
wiring cover
2. Make the power connection wire go through the cable-cross hole at the back
of indoor unit and then pull it out from the front side.
cable-cross hole
tape
power connection wire
3. Remove the wire clip; connect the power connection wire to the wiring terminal according to the color; tighten the screw and then fix the power connection wire with wire clip.
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NOTICE
The wiring board is for reference only, please refer to the actual one.
4. Put wiring cover back and then tighten the screw. 5. Close the panel.
Step 8:
Bind up pipe
1. Bind up the connection pipe, power cord and drain hose with the band.
indoor unit
indoor and outdoor power cord
gas pipe
connection pipe
drain hose
band
indoor power cord
3. Bind them evenly. 4. The liquid pipe and gas pipe should be bo-
und separately at the end.
NOTICE
The power cord and control wire can’t be crossed or winding.
The drain hose should be bound at the bottom.
Step 9:
Hang the indoor unit
1. Put the bound pipes in the wall pipe and then make them pass through the
wall hole.
2. Hang the indoor unit on the wall-mounting frame.
3. Stuff the gap between pipes and wall hole with sealing gum.
4. Fix the wall pipe. 5. Check if the indoor unit is installed firmly and
closed to the wall.
indoor wall pipe
outdoor sealing gum
upper hook
band
liquid pipe drain hose
2. Reserve a certain length of drain hose and power cord for installation when binding them. When binding to a certain degree, separate the indoor power and then separate the drain hose.
lower hook of wall-mounting frame
NOTICE
Do not bend the drain hose too excessively in order to prevent blocking.
Clean and maintenance
WARNING
Turn off the air conditioner and disconnect the power before cleaning the air
conditioner to avoid electric shock.
Do not wash the air conditioner with water to avoid electric shock.
Do not use volatile liquid to clean the air conditioner.
Do not use liquid or corrosive detergent to clean the appliance and do not
splash water or other liquid onto it , otherwise, it may damage the plastic
components , even cause electric shock.
Clean surface of indoor unit
When the surface of indoor unit is dirty, it is recommended to use a soft dry
cloth or wet cloth to wipe it. 127,&(
Do not remove the panel when cleaning it.
Clean filter
1. Open panel
Pull out the panel to a certain angle as shown in the fig.
2. Remove filter
Remove the filter as indicated in the fig.
WARNING The filter should be cleaned every three months.
If there is much dust in the operation environment, clean frequency can be
increased. After removing the filter, do not touch fins to avoid injury. Do
not use fire or hair dryer to dry the filter to avoid deformation or fire
hazard.
127,&(:Checking before use-season 1.Check whether air inlets and air outlets
are bl-
ocked. 2.Check whether air switch, plug and socket are
in good condition. 3.Check whether filter is clean. 4.Check whether mounting
bracket for outdoor
unit is damaged or corroded . If yes, please contact dealer. 5.Check whether
drainage pipe is damaged.
127,&(: Checking after use-season 1.Disconnect power supply. 2.Clean filter
and indoor unit’s panel. 3.Check whether mounting bracket for outdo or
unit is damaged or corroded. If yes, please contact dealer.
Notice for recovery
1.Many packing materials are recyclable materials. Please dispose them in
appropriate recycling unit.
2.If you want to dispose the air conditioner, please contact local dealer or
consultant service center for the correct disposal method.
3. Clean filter
Use dust catcher or water to clean the filter. When the filter is very dirty,
use the water
(below 45¥) to clean it , and then put it in a shady and cool place to dry.
4. Install filter
Install the filter and then close the panel cover tightly.
Error Code
When air conditioner status is abnor mal, temperature indicator on indoor unit will blink to display corresponding error code. Please refer to below list for identification of error code.
Error code
Troubleshooting
U8H6H3 It can be eliminated after restarting the unit.
E1E5E6 If not, please contact qualified professionals
E8
for service.
C5F0F1 Please contact qualified professionals for
F2
service.
127(
If there’re other error codes, please contact qualified professionals for
service.
Checked items before maintenance
General phenomenon analysis
Please check below items before asking for maintenance. If the malfunction
still can’t be eliminated, please contact local dealer or qualified
professionals.
Phenomenon
Check items
Solution
Whether it’s interfered Pull out the plug.
severely (such as sta- Reinsert the plug after
tic electricity, stable about 3min, and then
voltage?)
turn on the unit again.
Whether remote controller is within the signal receiving range?
Signal receiving range is 8m.
Whether there are Indoor unit obstacles?
Remove obstacles.
can’t receive
Select proper angle
remote co- Whether remote co- and point the remote
ntroller’s si- ntroller is pointing at controller at the rece-
gnal or remote the receiving window? iving window on indoor
controller has
unit.
no action.
Is sensitivity of rem- Check the batteries. ote controller low; If the power of batteries
fuzzy display or no is too low, please rep-
display?
lace them.
No display when operating remote controller?
Check whether remote controller appears to be damaged. If yes, replace it.
Fluorescent lamp in room?
Take the remote controller close to indoor unit. Turn off the fluorescent lamp and then try it again.
No air emitted from indoor unit
Air inlet or air outlet
of indoor unit is
Eliminate obstacles.
blocked?
Under heating mode, After reaching to set
indoor temperature is temperature, indoor
reached to set temp- unit will stop blowing
erature?
out air.
Heating mode is turned on just now?
In order to prevent blowing out cold air, indoor unit will be started after delaying for several minutes, which is a normal phenomenon.
Power failure?
Wait until power recovery.
Is plug loose?
Reinsert the plug.
Air switch trips off Ask professional to
Air
or fuse is burnt out? replace air switch or fuse.
conditioner can’t operate
Wiring has malfunction?
Ask professional to replace it.
Unit has restarted Wait for 3min, and
immediately after then turn on the unit
stopping operation? again.
Whether the function setting for remote Reset the function. controller is correct?
Mist is emitted from indoor unit’s
Indoor temperature and humidity is high?
Because indoor air is cooled rapidly. After a while, indoor temperature and hu-
air outlet
midity will be decrease
and mist will disappear.
Phenomenon
Check items
Solution
Odours are emitted
Whether there’s odour source, such as furniture and cigarette, etc.
Eliminate the odour source. Clean the filter.
Set temperature can’t
Temperature can’t
be adjusted under
Unit is operating un- auto mode. Please
der auto mode?
switch the operation
mode if you need to
adjust temperature.
be adjusted Your required temperature exceeds the Set temperature set temperature range: 16°C~30°C. range?
Cooling (heating) effect is not good.
Voltage is too low?
Filter is dirty? Set temperature is in proper range?
Wait until the voltage resumes normal. Clean the filter. Adjust temperature to proper range.
Door and window Close door and
are open?
window.
Air conditioner operates
Whether there’s interference, such as thunder, wireless
Disconnect power, put back power, and then turn on the unit
abnormally devices, etc.
again.
“Water flowing” noise
Air conditioner is turned on or turned off just now?
The noise is the sound of refrigerant flowing inside the unit, which is a normal phenomenon.
Cracking noise
Air conditioner is turned on or turned off just now?
This is the sound of friction caused by expansion and or contraction of panel or other parts due to the change of temperature.
WARNING
When below phenomenon occurs,please turn off air conditioner and disconnect
power immediately, and then contact the dealer or qualified professionals for
service.
Power cord is overheating or damaged. There’s abnormal sound during operation.
Air switch trips off frequently. Air conditioner gives off burning smell.
Indoor unit is leaking.
Do not repair or refit the air conditioner by yourself. If the air conditioner
operates under abnormal conditions, it may cause malfunction, electric shock
or fire hazard.
Parts name
Indoor Unit
air inlet panel filter
aux.button
horizontal louver air outlet
If remote controller is lost or damaged, please use aux. button to turn on or turn off the air conditioner. The operation in details is as below: As shown in the figure, open panel and press aux.button to turn off the air conditioner. When the air conditioner is turned on, it will operate under auto mode.
Display
Temp. indicator Power indicator
127(
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Operation and introduction of remote controller
Buttons on remote controller
Introduction for icons on display screen
Operation mode
Set fan speed
Send signal
;)A1
X-FAN button
Set temp.
Temp. display type
Indoor ambient temp. Outdoor ambient temp.
Auto mode
Cool mode
Dry mode
Fan mode
Heat mode
Set temperature
8°C heating function
Health mode Scavenging function
X-FAN function I feel
Child lock
Quiet
Turbo mode Sleep mode
Clock
TIMER ON / TIMER OFF
Set time
Up & down swing
Left & right swing
Power limiting operation
Introduction for buttons on remote controller
NOTE
This is a general use remote controller, it could be used for the air
conditioners with multifunction; For some function, which the model doesn’t
have, if press the corresponding button on the remote controller that the unit
will keep the original running status.
After putting through the power, the air conditioner will give out a sound.
Power indicator ” ” is ON (red indicator, the colour is different for
different models). After that, you can operate the air conditioner by using
remote controller.
Under on status, pressing the button on the remote controller, the signal icon
” ” on the display of remote controller will blink once and the air
conditioner will give out a “di” sound, which means the signal has been sent
to the air conditioner.
When selecting heating mode, the air conditioner operates under heat mode.
PressY or “” button to adjust set temperature. Press “FAN” button to adjust
fan speed. Press ” ” / ” ” button to adjust fan blowing angle. (Cooling only
unit won’t receive heating mode signal. If setting heat mode with remote
controller, press ON/OFF button can’t start up the unit).
NOTE For preventing cold air, after starting up heating
mode, indoor unit will delay 1~5 minutes to blow air
(actual delay time is depend on indoor ambient
temperature). Set temperature range from remote controller:
16~30°C (61-86°F);
Fan speed: auto, low speed, medium speed, high
speed. This indicator is not available for some models.
ON/OFF button
Press this button to turn on the unit. Press this button again to turn off the
unit.
FAN button
Pressing this button can set fan speed circularly as: auto (AUTO), low( ),
medium( ), high( ).
Auto
MODE button
Press this button to select your required operation mode.
AUTO COOL DRY FAN HEAT
When selecting auto mode, air conditioner will operate automatically according
to ex-factory setting. Set temperature can’t be adjusted and will not be
displayed as well. Press “FAN” button can adjust fan speed. Press ” ” / ” ”
button can adjust fan blowing angle.
After selecting cool mode, air conditioner will operate under cool mode. Press
“Y” or “” button to adjust set temperature. Press “FAN” button to adjust fan
speed. Press ” ” / ” ” button to adjust fan blowing angle.
When selecting dry mode, the air conditioner operates at low speed under dry
mode. Under dry mode, fan speed can’t be adjusted. Press ” ” / ” ” button to
adjust fan blowing angle.
When selecting fan mode, the air conditioner will only blow fan, no cooling
and no heating. All indicators are OFF. Press “FAN” button to adjust fan
speed. Press ” ” / ” ” button to adjust fan blowing angle.
NOTE Under AUTO speed, air conditioner will select proper
fan speed automatically according to ex-factory setting. It’s Low fan speed
under Dry mode. X-FAN function Hold fan speed button for 2s in COOL or DRY
mode, the icon ” ” is displayed and the indoor fan will continue operation for
a few minutes in order to dry the indoor unit even though you have turned off
the unit. After energization, X-FAN OFF is defaulted. X-FAN is not available
in AUTO, FAN or HEAT mode. This function indicates that moisture on evaporator
of indoor unit will be blowed after the unit is stopped to avoid mould. Having
set X-FAN function on: After turning off the
unit by pressing ON/OFF button indoor fan will continue running for a few
minutes. at low speed. In this period, Hold fan speed button for 2s to stop
indoor fan directly. Having set X-FAN function off: After turning off the unit
by pressing ON/OFF button, the complete unit will be off directly.
TURBO button
Under COOL or HEAT mode, press this button to turn to quick COOL or quick HEAT
mode. ” ” icon is displayed on remote controller. Press this button again to
exit turbo function and ” ” icon will disappear. If start this function, the
unit will run at super-high fan speed to cool or heat quickly so that the
ambient temperature approachs the preset temperature as soon as possible.
button
PressY or “” button once increase or decrease set temperature 1°C
(°F+ROGLQJYRU “” button, 2s later, set temperature on remote controller will
change quickly. On releasing button after setting is finished, temperature
indicator on indoor unit will change accordingly. (Temperature can’t be
adjusted under auto mode) When setting T-ON, T-OFF or CLOCK, pressY” or “”
button to adjust time. (Refer to CLOCK, T-ON, T-OFF buttons)
button
Press this button can select left & right swing angle. Fan blow angle can be
selected circularly as below:
no display (horizontal louvers stops
at current position)
When selecting ” “, air conditioner is blowing fan automatically. Horizontal
louver will automat-
ically swing up & down at maximum angle. When selecting ” a a a a”, air condi-
tioner is blowing fan at fixed position. Horizontal
louver will stop at the fixed position. When selecting ” a a “, air
conditioner is
blowing fan at fixed angle. Hold ” ” button above 2s to set your required
swing angle. When reaching your required
angle, release the button.
NOTE ” a
a ” may not be available. When air
conditioner receives this signal, the air conditioner will
blow fan automatically.
Press this button continuously more than 2s, the main
unit will swing back and forth from up to down, and
then loosen the button, the unit will stop swinging and
present position of guide louver will be kept immedi-
ately.
Under swing up and down mode, when the status is
switched from off to , if press this button again 2s
later, status will switch to off status directly; if
press this button again within 2s, the change of swing
status will also depend on the circulation sequence
stated above.
no display (stops at current
position)
T-ON T-OFF button
NOTE
Press this button continuously more than 2s, the main
unit will swing back and forth from left to right, and
then loosen the button, the unit will stop swinging and
present position of guide louver will be kept immedi-
ately.
Under swing left and right mode, when the status is
switched from off to
, if press this button again
2s later, status will switch to off status directly; if
press this button again within 2s, the change of swing
status will also depend on the circulation sequence
stated above.
This function only applicable for some models.
button
Press this button can select up & down swing angle. Fan blow angle can be
selected circularly as below:
T-ON button “T-ON” button can set the time for timer on. After
pressing this button, ” ” icon disappears and
the word “ON” on remote controller blinks. Press Yor “” button to adjust T-ON
setting. After each pressingY or “” button, T-ON setting will increase or
decrease 1min. HoldYor “” button, 2s later, the time will change quickly until
reaching your required time. Press “T-ON” to
confirm it. The word “ON” will stop blinking.” ”
icon resumes displaying. Cancel T-ON: Under
the condition that T-ON is started up, press
“T-ON” button to cancel it. T-OFF button
“T-OFF” button can set the time for timer off.
After pressing this button,” ” icon disappears
and the word “OFF” on remote controller blinks. PreVVY or “” button to adjust
T-OFF setting. After each pressingY or “” button, T-OFF setting will increase
or decrease 1min. Hold “Y” or “” button, 2s later, the time will change
quickly until reaching your required time. Press
“T-OFF” word “OFF” will stop blinking. ” ” icon resumes displaying. Cancel
T-OFFUnder the condition that T-OFF is started up, press “T-OFF” button to
cancel it.
NOTE Under on and off status, you can set T-OFF or T-ON
simultaneously. Before setting T-ON or T-OFF, please adjust the
clock time. After starting up T-ON or T-OFF, set the constant
circulating valid. After that, air conditioner will be turned on or turned off
according to setting time. ON/OFF button has no effect on setting. If you
don’t need this function, please use remote controller to cancel it.
I FEEL button
Press this button to start I FEEL function and ” ” will be displayed on the
remote controller. After this function is set, the remote controller will send
the detected ambient temperature to the controller and the unit will
automatically adjust the indoor temperature according to the detected
temperature. Press this button again to close I FEEL function and ” ” will
disappear. Please put the remote controller near user when
this function is set. Do not put the remote controller near the object of high
temperature or low temperature in order to avoid detecting inaccurate ambient
temperature. When I FEEL function is turned on, the remote controller should
be put within the area where indoor unit can receive the signal sent by the
remote controller.
CLOCK button
Press this button to set clock time. ” ” icon on remote controller will blink.
Press “Y” or “” button within 5s to set clock time. Each pressing of “Yor “”
button, clock time will increase or decrease 1 min. If holdYor “” button, 2s
later, time will change quickly. Release this button when reaching your
required time. Press “CLOCK” button to confirm the time. ” ” icon stops
blinking.
NOTE Clock time adopts 24-hour mode. The interval between two operation can’t
exceeds 5s.
Otherwise, remote controller will quit setting status. Operation for
T-ON/T-OFF is the same.
SLEEP button
Under COOL or HEAT mode, press this button to start up sleep function. ” ”
icon is displayed on remote controller. Press this button again to cancel
sleep function and ” ” icon will disappear.After powered on, Sleep Off is
defaulted. After the unit is turned off, the Sleep function is canceled. In
this mode, set temperature will be adjusted with the change of time. Under
Fan, DRY and Auto modes, this function is not available.
X-FAN button
Pressing this button in COOL or DRY mode, the icon ” ” is displayed and the
indoor fan will continue operation for a few minutes in order to dry the
indoor unit even though you have turned off the unit. After energization,
X-FAN OFF is defaulted.X-FAN is not available in AUTO, FAN or HEAT mode. This
function indicates that moisture on evaporator of indoor unit will be blowed
after the unit is stopped to avoid mould.
Having set X-FAN function on: After turning off the unit by pressing ON/OFF
button indoor fan will continue running for about a few minutes. at low speed.
In this period, press X-FAN button to stop indoor fan directly.
Having set X-FAN function off: After turning off the unit by pressing ON/OFF
button, the complete unit will be off directly.
button
Press this button to turn on or turn off the health and scavenging functions
in operation status. Press this button for the first time to start scavenging
function; LCD displays ” “. Press the button for the second time to start
health and scavenging functions simultaneously; LCD displays ” ” and ” “.
Press this button for the third time to quit health and scavenging functions
simultaneously. Press the button for the fourth time to start health function;
LCD display ” “. Press this button again to repeat the operation above.
NOTE This function only applicable for some models.
LIGHT button
Press this button to turn off display light on indoor unit. ” ” icon on remote
controller disappears. Press this button again to turn on display light. ” ”
icon is displayed.
TEMP button
By pressing this button, you can see indoor set temperature, indoor ambient
temperature or outdoor ambient temperature on indoor unit’s display. The
setting on remote controller is selected circularly as below:
no display
When selecting ” ” or no display with remote controller, temperature indicator
on indoor unit displays set temperature.
When selecting ” ” with remote controller, temperature indicator on indoor
unit displays indoor ambient temperature.
When selecting ” ” with remote controller, temperature indicator on indoor
unit displays outdoor ambient temperature.
NOTE Outdoor temperature display is not available for some
models. At that time, indoor unit receives ” ” signal, while it displays
indoor set temperature. It’s defaulted to display set temperature when turning
on the unit. There is no display in the remote controller. Only for the models
whose indoor unit has dual-8 display. When selecting displaying of indoor or
outdoor ambient temperature, indoor temperature indicator displays
corresponding temperature and automatically turn to display set temperature
after three or five seconds.
NOTE Under energy-saving function, fan speed is defaulted
at auto speed and it can’t be adjusted. Under energy-saving function, set
temperature can’t
be adjusted. Press “TURBO” button and the remote controller won’t send signal.
Sleep function and energy-saving function can’t operate at the same time. If
energy-saving function has been set under cooling mode, press “SLEEP” button
will cancel energy-saving function. If sleep function has been set under
cooling mode, start up the energy-saving function will cancel sleep function.
8 heating function
Under heating mode, press “TEMP” and “CLOCK” buttons simultaneously to start
up or turn off 8 heating function. When this function is started up, ” ” and ”
8″ will be shown on remote controller, and the air conditioner keep the
heating status at 8.Press “TEMP” and “CLOCK” buttons simultaneously again to
exit 8 heating function.
NOTE Under 8 heating function, fan speed is defaulted at
auto speed and it can’t be adjusted. Under 8 heating function, set temperature
can’t be
adjusted. Press “TURBO” button and the remote
controller won’t send signal. Sleep function and 8 heating function can’t
operate
at the same time. If 8 heating function has been set under cooling mode, press
“SLEEP” button will cancel 8 heating function. If sleep function has been set
under cooling mode, start up the 8 heating function will cancel sleep
function. Under temperature display, the remote controller will display 46
heating.
Function introduction for combination buttons
Child lock function
Energy-saving function
Under cooling mode, press “TEMP” and ” CLOCK” buttons simultaneously to start
up or turn off energy-saving function. When energy-saving function is started
up, “SE” will be shown on remote controller, and air conditioner will adjust
the set temperature automatically according to ex-factory setting to reach to
the best energy-saving effect. Press “TEMP” and “CLOCK” buttons simultaneously
again to exit energy-saving function.
PressY” and” simultaneously to turn on or turn off child lock function. When
child lock function is on, ” ” icon is displayed on remote controller. If you
operate the remote controller, the ” ” icon will blink three times without
sending signal to the unit.
Temperature display switchover function
Under OFF status, press “” and “MODE” buttons simultaneously to switch
temperature display between °C and °F.
WIFI Function
Press “MODE” and “TURBO” button simultan-
eously to turn on or turn off WIFI function. When
WIFI function is turned on, the ”
” icon will
be displayed on remote controller; Long press
“MODE” and “TURBO” buttons simultaneously for
10s, remote controller will send WIFI reset code
and then the WIFI function will be
turned on. WIFI function is defaulted ON after
energization of the remote controller.
This function is only available for some models.
Double Self Clean function
Under unit off status, hold “MODE” and “FAN” buttons simultaneously for 5s to
turn on or turn off the auto clean function. When the auto clean function is
turned on, indoor unit displays “CL” . During the auto clean process of
evaporator, the unit will perform fast cooling or fast heating. There may be
some noise, which is the sound of flowing liquid or thermal expansion or cold
shrinkage. The air conditioner may blow cool or warm air, which is a normal
phenomenon. During cleaning process, please make sure the room is well
ventilated to avoid affecting the comfort.
1. Lift the cover along the direction of arrow (as shown in Fig 1 æ).
2. Take out the original batteries (as shown in F ig 1 ç).
3. Place two 7# (AAA 1.5V) dry batteries, and make sure the position of “+”
polar and “-” polar is correct (as shown in Fig 2 è).
4. Reinstall the cover (as shown in Fig 2 é).
NOTICE
During operation, point the remote control signal sender at the receiving
window on indoor unit.
The distance between signal sender and receiving window should be no more than
8m, and there
should be no obstacles between them. Signal may be interfered easily in the
room where
there is Àuorescent lamp or wireless telephone; remote controller should be
close to indoor unit
during operation. Replace new batteries of the same model when
replacement is required.
When you don’t use remote controller for a long time,
please take out the batteries.
If the display on remote controller is fuzzy or there’s
no display, please replace batteries.
NOTE
The auto clean function can only work under normal ambient temperature. If the
room is dusty, clean it once a month; if not, clean it once every three
months. After the auto clean function is turned on, you can leave the room.
When auto clean is finished, the air conditioner will enter standby status.
This function is only available for some models.
Replacement of batteries in remote controller
æ
é
ç
è
Test and operation
Check after installation
Check according to the following requirement after finishing installation.
Items to be checked Possible malfunction
Has the unit been installed firmly? Have you done the refrigerant leakage test?
The unit may drop, shake or emit noise. It may cause insufficient cooling(heating) capacity.
Is heat insulation of pipe- It may cause condensation
line sufficient?
and water dripping.
Is water drained well?
It may cause condensation and water dripping.
Is the voltage of power supply according to the voltage marked on the nameplate?
It may cause malfunction or damage the parts.
Is electric wiring and pip- It may cause malfunction or eline installed correctly? damage the parts.
Is the unit grounded securely?
It may cause electric leakage.
Does the power cord fol- It may cause malfunction or
low the specification?
damage the parts.
Is there any obstruction in It may cause insufficient the air inlet and outlet? cooling(heating) capacity.
The dust and sundries It may cause malfunction or caused during installation damage the parts. are removed?
The gas valve and liquid valve of connection pipe are open completely?
It may cause insufficient cooling (heating) capacity.
Is the inlet and outlet of It may cause insufficient piping hole been covered?
cooling (heating) capacity
or waste electricity.
Test operation
1. Preparation of test operation
The client approves the air conditioner.
Specify the important notes for air conditioner to
the client.
2. Method of test operation
Put through the power, press ON/OFF button on
the remote controller to start operation.
Press MODE button to select AUTO, COOL, DRY,
FAN and HEAT to check whether the operation is
normal or not. If the ambient
temperature
is
lower
than
16¥,
the
air conditioner can’t start cooling.
9
Parts name
Outdoor Unit
air inlet
air outlet
127(
Actual product may be different from above graphics, please refer to actual
product.
20
Installation notice
Space to the obstruction At least 50cm
SpacAet tloeathset 3w0aclml
Space to the obstruction At least 30cm
Drainage pipe
Space
Space toAtht eleoabstst2ru0c0tciomn
to
tAhet loebassttr5u0ctciomn
Safety precautions for installing and relocating the unit
To ensure safety, please be mindful of the following precautions.
WARNING
When installing or relocating the unit, be sure to keep the refrigerant
circuit free from air or substances other than the specified refrigerant. Any
presence of air or other foreign substance in the refrigerant circuit will
cause system pressure rise or compressor rupture, resulting in injury.
When installing or moving this unit, do not charge the refrigerant which is
not comply with that on the nameplate or unqualified refrigerant. Otherwise,
it may cause abnormal operation, wrong action, mechanical malfunction or even
serious safety accident.
When refrigerant needs to be recovered during relocating or repairing the
unit,be
WARNING
sure that the unit is running in cooling mode. Then, fully close the valve at
high pressure side (liquid valve). About 30-40 seconds later, fully close the
valve at low pressure side (gas valve), immediately stop the unit and
disconnect power. Please note that the time for refrigerant recovery should
not exceed 1 minute.
If refrigerant recovery takes too much time, air may be sucked in and cause
pressure rise or compressor rupture, resulting in injury. During refrigerant
recovery, make sure that liquid valve and gas valve are fully closed and power
is disconnected before detaching the connection pipe.
If compressor starts running when stop valve is open and connection pipe is
not yet connected, air will be sucked in and cause pressure rise or compressor
rupture, resulting in injury.
When installing the unit, make sure that connection pipe is securely connected
before the compressor starts running.
If compressor starts running when stop valve is open and connection pipe is
not yet connected, air will be sucked in and cause pressure rise or compressor
rupture, resulting in injury. Prohibit installing the unit at the place where
there may be leaked corrosive gas or flammable gas.
If there is leaked gas around the unit, it may cause explosion and other
accidents. Do not use extension cords for electrical connections. If the
electric wire is not long enough, please contact a local service center
authorized and ask for a proper electric wire.
Poor connections may lead to electric shock or fire.
Use the specified types of wires for electrical connections between the indoor
and outdoor units. Firmly clamp the wires so that their terminals receive no
external stresses.
Electric wires with insufficient capacity, wrong wire connections and insecure
wire terminals may cause electric shock or fire.
Tools for installation
Level meter 7 Open-end 12 Universal
2 Screw driver 3 Impact drill 4 Drill head
wrench
8 Pipe cutter
9
Leakage detector
meter 13 Inner hexagon
spanner
14 Measuring
5 Pipe expander 10 Vacuum pump tape
6 Torque wrench 11 Pressure meter
127,&(
Please contact the local agent for installation. Don’t use unqualified power
cold.
21
Installation of outdoor unit
Step 1:
Fix the support of outdoor unit (select it according to the actual
installation situation)
1. Select installation location according to the house structure.
2. Fix the support of outdoor unit on the selected location with expansion
screws.
drain vent Drain hose
chassis outdoor drain joint
Step 3:
Fix outdoor unit
1. Place the outdoor unit on the support.
2. Fix the foot holes of outdoor unit with bolts.
foot holes
at least 3cm above the floor
NOTICE
Take sufficient protective measures when installing the outdoor unit. Make
sure the support can withstand at least four times of the unit weight. The
outdoor unit should be installed at least 3cm above the floor in order to
install drain joint. (for the model with heating tube, the installation height
should be no less than 20cm.) For the unit with cooling capacity of 2300W~
5000W, 6 expansion screws are needed ; for the unit with cooling capacity of
6000W~8000W, 8 expansion screws are needed; for the unit with cooling capacity
of 10000W~16000W, 10 expansion screws are needed.
Step 2:
Install drain joint (only for some models)
1. Connect the outdoor drain joint into the hole on the chassis, as shown in
the picture below.
2. Connect the drain hose into the drain vent.
NOTICE
As for the shape of drainage joint, please refer to the current product. Do
not install the drainage joint in the severe cold area. Otherwise,it will be
frosted and then cause malfunction.
foot holes
Step 4:
Connect indoor and outdoor pipes
1. Remove the screw on the right handle of outdoor unit and then remove the
handle.
screw
handle
NOTE
When there’re multiple cables cross-hole passing through it, the cross-hole of
handle should be knocked off and eliminate the sharp burrs for avoid damaging
the cables. Only applicable for some models.
2. Remove the screw cap of valve and aim the pipe joint at the bellmouth of
pipe.
liquid valve
liquid pipe gas pipe
gas valve
3. Pretighten the union nut with hand.
pipe joint
union nut
22
4. Tighten the union nu t with torque wrench by referring to the sheet below.
Hex nut diameter Tightening torque(N .m)
1/4”
15~20
3/8”
30~40
1/2”
45~55
5/8”
60~65
3/4”
70~75
Step 5:
Connect outdoor electric wire
1. Remove the wire clip; connect the power connection wire and signal control
wire (only for cooling and heating unit) to the wiring terminal according to
the color; fix them with screws.
Step 6:
Neaten the pipes
1. The pipes should be placed along the wall, bent reasonably and hidden
possibly. Min. semidiameter of bending the pipe is 10cm.
2. If the outdoor unit is higher than the wall hole, you must set a U-shaped
curve in the pipe before pipe goes into the room, in order to prevent rain
from getting into the room.
wall
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U-shaped curve
drain hose
NOTICE The through-wal height of drain hose shoul
not be higher than the outlet pipe hole of indoor unit.
the drain hose can’t raise upwards.
The water outlet can’t be placed in water in order to drain smoothly.
The water outlet can’t be placed in water
Slant the drain hose slightly downwards. The drain hose can’t be curved,
raised and fluctuant, etc.
NOTICE
The wiring board is for reference only, please refer to the actual one.
2. Fix the power connection wire and signal control wire with wire clip (only
for cooling and heating unit).
NOTICE
After tighten the screw, pull the power cord slightly to check if it is firm.
Never cut the power connection wire to prolong or shorten the distance.
23
The drain hose can’t be fluctuant
The drain hose can’t be fluctuant
The water outlet can’t be fluctuant
Test and operation
Use vacuum pump
1. Remove the valve caps on the liquid valve and gas valve and the nut of
refrigerant charging vent.
2. Connect the charging hose of piezometer to the refrigerant charging vent
of gas valve and then connect the other charging hose to the vacuum pump.
3. Open the piezometer completely and operate for 10-15min to check if the
pressure of piezometer remains in -0.1MPa.
4. Close the vacuum pump and maintain this status for 1-2min to check if the
pressure of piezometer remains in -0.1MPa. If the pressure decreases, there
may be leakage.
5. Remove the piezometer, open the valve core of liquid valve and gas valve
completely with inner hexagon spanner.
6. Tighten the screw caps of valves and refrigerant charging vent.
7. Reinstall the handle.
liquid valve
gas valve refrigerant charging vent
nut of refrigerant charging vent
piezometer Lo Hi
valve cap
vacuum pump
inner hexagon spanner
close open
Leakage detection
1. With leakage detector: Check if there is leakage with leakage detector.
2. With soap water: If leakage detector is not available, please use soap
water for leakage detection. Apply soap water at the suspected position and
keep the soap water for more than 3min. If there are air bubbles coming out of
this position, there’s a leakage.
Check after installation
Check according to the following requirement after finishing installation.
Items to be checked Possible malfunction
Has the unit been installed firmly? Have you done the refrigerant leakage test?
The unit may drop, shake or emit noise. It may cause insufficient cooling(heating) capacity.
Is heat insulation of pipe- It may cause condensation
line sufficient?
and water dripping.
Is water drained well?
It may cause condensation and water dripping.
Is the voltage of power supply according to the voltage marked on the nameplate?
It may cause malfunction or damage the parts.
Is electric wiring and pip- It may cause malfunction or eline installed correctly? damage the parts.
Is the unit grounded securely?
It may cause electric leakage.
Does the power cord fol- It may cause malfunction or
low the specification?
damage the parts.
Is there any obstruction in It may cause insufficient the air inlet and outlet? cooling(heating) capacity.
The dust and sundries It may cause malfunction or caused during installation damage the parts. are removed?
The gas valve and liquid valve of connection pipe are open completely?
It may cause insufficient cooling (heating) capacity.
Is the inlet and outlet of It may cause insufficient piping hole been covered?
cooling (heating) capacity
or waste electricity.
Test operation
1. Preparation of test operation
The client approves the air conditioner. Specify the important notes for air
conditioner to
the client.
2. Method of test operation
Put through the power, press ON/OFF button on the remote controller to start
operation.
Press MODE button to select AUTO, COOL, DRY, FAN and HEAT to check whether the
operation is
normal or not. If the ambient temperature is lower than 16¥the air conditioner
can’t start cooling.
24
Configuration of connection pipe
1. Standard length of connection pipe: 5m, 7.5m, 8m.
2. Min. length of connection pipe. For the unit with standard connection pipe
of 5m, there is no limitation for the min length of connection pipe. For the
unit with standard connection pipe of 7.5m and 8m, the min length of
connection pipe is 3m.
3. Max. length of connection pipe is shown as below.
Max. length of connection pipe
Cooling capacity
Max. length of connection pipe(m)
5000Btu/h (1465W)
15
7000Btu/h (2051W)
15
9000Btu/h (2637W)
15
12000Btu/h (3516W)
20
18000Btu/h (5274W)
25
24000Btu/h (7032W)
25
28000Btu/h (8204W)
30
36000Btu/h (10548W)
30
42000Btu/h (12306W)
30
48000Btu/h (14064W)
30
4. The calculation method of additional refrigerant oil and refrigerant
charging amount after prolonging connection pipe. After the length of
connection pipe is prolonged for 10m at the basis of standard length, you
should add 5ml of refrigerant oil for each additional 5m of connection pipe.
The calculation method of additional refrigerant charging amount (on the basis
of liquid pipe):
(1) Additional refrigerant charging amount= prolonged length of liquid pipe ×
additional
(2) refrigerant charging amount per meter Basing on the length of standard
pipe, add refrigerant according to the requirement as shown in the table. The
additional refrigerant charging amount per meter is different according to the
diameter of liquid pipe. See Sheet .
Piping size
Indoor unit throttle Outdoor unit throttle
Cooling only, cooling and heating
Cooling only
Liquid pipe
Gas pipe
cooling and heating
(g / m)
(g / m)
1/4” 1/4” or 3/8”
1/2” 5/8” 3/4” 7/8”
3/8” or 1/2” 5/8” or 3/4” 3/4” or 7/8”
RU
16
12
16
40
12
40
Additional refrigerant charging amount for R32
127,&(
The additional refrigerant charging amount in Sheet is recommended value, not
compulsory.
Pipe expanding method
127,&(
Improper pipe expanding is the main cause of refrigerant leakage. Please
expand the pipe according to the following steps:
A: Cut the pipe
Confirm the pipe length according to the distance of indoor unit and outdoor
unit.
Cut the required pipe with pipe cutter.
leaning uneven burr pipe
pipe cutter
80
24
96
136
48
96
200
200
200
280
280
280
25
B: Remove the burrs
Remove the burrs with shaper and prevent the burrs from getting into the pipe.
pipe shaper
downwards
C: Put on suitable insulating pipe
D: Put on the union nut
Remove the union nut on the indoor connection
pipe and outdoor valve; install the union nut on
union pipe
the pipe.
pipe
smooth surface
improper expanding
leaning damaged crack uneven
surface
thickness
the length is equal
E: Expand the port
Expand the port with expander.
expander
hard mold
pipe
NOTICE
$ is different according to the diameter, please refer to the sheet below:
Outer diameter (mm)
A(mm)
Max
Min
1.3
0.7
1.6
1.0
1.8
1.0
2.4
2.2
F: Inspection
Check the quality of expanding port. If there is any blemish, expand the port
again according to the steps above.
26
6SHFLDOLVW¶V0DQXDO
The following checks shall be applied to installations using flammable
refrigerants:
the charge size is in accordance with the room size within which the
refrigerant containing parts are installed; the ventilation machinery and
outlets are operating adequately and are not obstructed; if an indirect
refrigerating circuit is being used, the secondary circuit shall be checked
for the presence of refrigerant; marking to the equipment continues to be
visible and legible. Markings and signs that are illegible shall be corrected;
refrigeration pipe or components are installed in a position where they are
unlikely to be exposed to any substance which may corrode refrigerant
containing components, unless the components are constructed of materials
which are inherently resistant to being corroded or are suitably protected
against being so corroded.
Repair and maintenance to electrical components shall include initial safety
checks and component inspection procedures. If a fault exists that could
compromise safety, then no electrical supply shall be connected to the circuit
until it is satisfactorily dealt with. If the fault cannot be corrected
immediately but it is necessary to continue operation, an adequate temporary
solution shall be used. This shall be reported to the owner of the equipment
so all parties are advised.
Initial safety checks shall include:
that capacitors are discharged: this shall be done in a safe manner to avoid
possibility of sparking; that no live electrical components and wiring are
exposed while charging, recovering or purging the system; that there is
continuity of earth bonding.
Checking for presence of refrigerant
The area shall be checked with an appropriate refrigerant detector prior to
and during work, to ensure the technician is aware of potentially toxic or
flammable atmospheres. Ensure that the leak detection equipment being used is
suitable for use with all applicable refrigerants, i.e. non-sparking,
adequately sealed or intrinsically safe.
Presence of fire extinguisher
If any hot work is to be conducted on the refrigeration equipment or any
associated parts, appropriate
fire extinguishing equipment shall be available to hand. Have a dry powder or
CO2 fire extinguisher adjacent to the charging area.
Ventilated area
Ensure that the area is in the open or that it is adequately ventilated before
breaking into the system or conducting any hot work. A degree of ventilation
shall continue during the period that the work is carried out. The ventilation
should safely disperse any released refrigerant and preferably expel it
externally into the atmosphere.
Checks to the refrigeration equipment
Where electrical components are being changed, they shall be fit for the
purpose and to the correct specification. At all times the manufacturer’s
maintenance and service guidelines shall be followed. If in doubt, consult the
manufacturer’s technical department for assistance.
Checks to electrical devices
that capacitors are discharged: this shall be done in a safe manner to avoid
possibility of sparking; that no live electrical components and wiring are
exposed while charging, recovering or purging the system.
Repairs to sealed components
During repairs to sealed components, all electrical supplies shall be
disconnected from the equipment being worked upon prior to any removal of
sealed covers, etc. If it is absolutely necessary to have an electrical supply
to equipment during servicing, then a permanently operating form of leak
detection shall be located at the most critical point to warn of a potentially
hazardous situation. Particular attention shall be paid to the following to
ensure that by working on electrical components, the casing is not altered in
such a way that the level of protection is affected. This shall include damage
to cables, excessive number of connections, terminals not made to original
specification, damage to seals, incorrect fitting of glands, etc. Ensure
that the apparatus is mounted securely. Ensure that seals or sealing
materials have not degraded to the point that they no longer serve the purpose
of preventing the ingress of flammable atmospheres. Replacement parts shall be
in accordance with the manufacturer’s specifications. NOTE:The use of silicon
sealant can inhibit the effectiveness of some types of leak detection
equipment. Intrinsically safe components do not have to be isolated prior to
working on them.
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Specialist’s Manual
Repair to intrinsically safe components
Do not apply any permanent inductive or capacitance loads to the circuit
without ensuring that this will not exceed the permissible voltage and current
permitted for the equipment in use. Intrinsically safe components are the only
types that can be worked on while live in the presence of a flammable
atmosphere. The test apparatus shall be at the correct rating. Replace
components only with parts specified by the manufacturer. Other parts may
result in the ignition of refrigerant in the atmosphere from a leak.
Cabling
Check that cabling will not be subject to wear, corrosion, excessive pressure,
vibration, sharp edges or any other adverse environmental effects. The check
shall also take into account the effects of aging or continual vibration from
sources such as compressors or fans.
Detection of flammable refrigerants
Under no circumstances shall potential sources of ignition be used in the
searching for or detection of refrigerant leaks. A halide torch (or any other
detector using a naked flame) shall not be used.
Leak detection methods
Leak detection fluids are suitable for use with most refrigerants but the use
of detergents containing chlorine shall be avoided as the chlorine may react
with the refrigerant and corrode the copper pipe-work.
Decommissioning
Before carrying out this procedure, it is essential that the technician is
completely familiar with the equipment and all its detail. It is recommended
good practice that all refrigerants are recovered safely. Prior to the task
being carried out, an oil and refrigerant sample shall be taken in case
analysis is required prior to re-use of reclaimed refrigerant. It is essential
that electrical power is available before the task is commenced. a) Become
familiar with the equipment and its operation. b) Isolate system electrically.
c) Before attempting the procedure, ensure that:
mechanical handling equipment is available, if required, for handling
refrigerant cylinders; all personal protective equipment is available and
being used correctly; the recovery process is supervised at all times by a
competent person;
recovery equipment and cylinders conform to the appropriate standards. d)
Pump down refrigerant system, if possible. e) If a vacuum is not possible,
make a manifold so that refrigerant can be removed from various parts of the
system. f) Make sure that cylinder is situated on the scales before recovery
takes place. g) Start the recovery machine and operate in accordance with
manufacturer’s instructions. h) Do not overfill cylinders. (No more than 80%
volume liquid charge). i) Do not exceed the maximum working pressure of the
cylinder, even temporarily. j) When the cylinders have been filled correctly
and the process completed, make sure that the cylinders and the equipment are
removed from site promptly and all isolation valves on the equipment are
closed off. k) Recovered refrigerant shall not be charged into another
refrigeration system unless it has been cleaned and checked.
Labelling
Equipment shall be labelled stating that it has been de-commissioned and
emptied of refrigerant. The label shall be dated and signed. For appliances
containing flammable refrigerants, ensure that there are labels on the
equipment stating the equipment contains flammable refrigerant.
Recovery
When removing refrigerant from a system, either for servicing or
decommissioning, it is recommended good practice that all refrigerants are
removed safely. When transferring refrigerant into cylinders, ensure that only
appropriate refrigerant recovery cylinders are employed. Ensure that the
correct number of cylinders for holding the total system charge are available.
All cylinders to be used are designated for the recovered refrigerant and
labelled for that refrigerant (i.e. special cylinders for the recovery of
refrigerant). Cylinders shall be complete with pressure-relief valve and
associated shut-off valves in good working order. Empty recovery cylinders are
evacuated and, if possible, cooled before recovery occurs. The recovery
equipment shall be in good working order with a set of instructions concerning
the equipment that is at hand and shall be suitable for the recovery of all
appropriate refrigerants including, when applicable, flammable refrigerants.
In ad-
28
6SHFLDOLVW¶V0DQXDO
dition, a set of calibrated weighing scales shall be available and in good
working order. Hoses shall be complete with leak-free disconnect couplings and
in good condition. Before using the recovery machine, check that it is in
satisfactory working order, has been properly maintained and that any
associated electrical components are sealed to prevent ignition in the event
of a refrigerant release. Consult manufacturer if in doubt. The recovered
refrigerant shall be returned to the refrigerant supplier in the correct
recovery cylinder, and the relevant waste transfer note arranged. Do not mix
refrigerants in recovery units and especially not in cylinders. If compressors
or compressor oils are to be removed, ensure that they have been evacuated to
an acceptable level to make certain that flammable refrigerant does not remain
within the lubricant. The evacuation process shall be carried out prior to
returning the compressor to the suppliers. Only electric heating to the
compressor body shall be employed to accelerate this process. When oil is
drained from a system, it shall be carried out safely.
29
- Cooper& Hunter is constantly working to improve their products, so the information in this manual is subject to change without prior notice.
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U
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