COOLZY-GO PC9RL Personal Portable Air Conditioner User Guide
- June 3, 2024
- COOLZY-GO
Table of Contents
GO PC9RL Personal Portable Air Conditioner
User Guide
PC9RL Personal Portable Air Conditioner
Coolzy products are distributed in the European Union and UK by Close Comfort
International Pte Ltd, Singapore, UEN 201527973E.
USER GUIDE AND WARRANTY
| This product contains a small amount of R290 refrigerant with negligible
global warming impact. The refrigerant is flammable. Read the safety
precautions first! Avoid using this product in a wet environment. Ensure that
anyone using this product is aware of normal safety precautions for household
electric appliances.| Caution
Risk of fire
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PARTS
LED DISPLAY PANEL
REMOTE
| Cooling
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| Fan
| Sleeping
| Timer ON/OFF
| Temperature
| Automatic air flow speed
| High speed
| Medium speed
| Low speed
Micro climate temperature setting
The temperature of the cool air at the outlet is dependent on the environment
temperature and humidity, usually 8 to 14 degrees less than the ambient
temperature. The thermostat turns off the compressor if the temperature of the
air returning to the air conditioner is below the set temperature. Press ▲ to
increase or ▼ to reduce the set temperature.
SLEEP
- Press “SLEEP” to set sleep function. The fan changes to low speed for sleeping. Press again to cancel sleep function.
- The temperature setting will increase by 0.5 °C after half an hour and 2 °C after 2 hours.
- When you turn off the unit, the sleep function will be cancelled automatically.
TIMER
The timer is used to turn off the unit automatically after the setting time
is over.
- Press the “TIMER” key to set the number of hours of desired operating time.
- Once the set time has come to an end, the unit will turn off automatically.
- Press the “POWER” key to turn off the machine and cancel the timer.
AUTO
The fan speed changes automatically. When the ambient temperature is 2 or more
degrees higher than the set room temperature, the machine will run with high
fan speed. It will automatically switch to medium and low fan speed when the
ambient temperature gets closer to the set temperature.
GETTING STARTED
IMPORTANT
Always keep Coolzy upright. It may have been stored or transported on it’s
side or laid flat by mistake, so please stand it upright for at least 12 hours
before plugging it into power and turning it on. Failing to do so may damage
the unit.
- After removing Coolzy from the box, place it in an upright position.
- Remove the cable from the drawer at the back of the unit and insert the plug into a wall outlet. Make sure you push the drawer fully back in so it aligns with the back panel.
Drape a curtain as shown to exclude light when sleeping. Make sure that the room air intake is at least 15 cm from the wall! - Open the warm air deflector fully. This will turn on the unit and the compressor will start.
- Open the cold air deflector and allow 2 minutes for the air coming out to feel cold. Use the remote control to adjust fan speed. Keep the temperature setting at 17 °C unless the air flow feels too cold.
- Keep a door or window open so fresh air circulates unless it is extremely hot or windy outside.
For a small room, place the unit near an open window or doorway. - Avoid using a fan nearby as it can disrupt Cooley’s gentle air flow.
- The adjustable nozzle (“focus enhancer”) extends the range of cooling and, after fitting the separate transparent deflector flap, enables a higher angle of air flow.
Position Coolzy close enough for comfort. The ideal range of distance is 1.5 – 3 metres. Arrange the angle of the cold air deflector so cool air flows around face and shoulders.
For sleeping, arrange
your unit about 15 cm from the end of the bed. Adjust the cold air deflector
and adjustable nozzle to the desired angle so the cool air flows over your
face and upper body. It also works with larger beds for two people.
Use the optional Igloo tent for a more intense cooling effect and
insect protection. We recommend using the Igloo tent for sleeping if indoor
temperature is over 27 °C.
DEHUMIDIFICATION
Coolzy condenses water from the room air in humid weather conditions. Normally
this water evaporates into the air emerging from the warm air outlet,
improving the cooling power.
To collect the condensed water instead, open the cable drawer and remove the
stopper just above it. This will allow some of the condensed water to collect
in the drawer. When the cable drawer is full, the white water drop indicator
comes on and Coolzy will pause. Carefully remove the cable drawer and empty
the water. The cable drawer can store about two litres of condensed water.
Remember to replace the stopper for normal, high efficiency cooling.
ADJUSTABLE NOZZLE
Coolzy has an adjustable nozzle that adjusts the cool air throw (Focus Enhancer). Push the blue nozzle down for a more focused air flow that cools at a greater distance. Lift the nozzle for a gentler flow.
Make sure the nozzle is pushed down before closing the cool air deflector. For
a higher angle of air flow, attach the transparent flap to the end of the cool
air deflector. Make sure the straight edge is facing you and the two notches
slide under the cool air deflector.
To remove, simply pull the flap off.
Tips
- Adjust the angle of the cool air deflector to ensure that cool air flows past face and neck. Adjust nozzle to about 45° for best cooling effect.
- Turn off fans when using Coolzy. Drafts from nearby windows and fans may disrupt the air jet.
- Pull the nozzle upright for use with the bed tent. If the nozzle is in the down position, the cool air at the bottom of the tent will mix with the warm air at the top.
- In humid weather, it is normal for moisture to condense on parts of the nozzle.
USER MAINTENANCE
We recommend inspecting at least the return air inlet filter once every two
weeks. Once there is a noticeable amount of dust, clean all three filters by
rinsing them under running water.
Remove the adjustable nozzle to access the foam filter beneath it. Replace the
nozzle after cleaning the foam filter.
In dusty locations, consider arranging for an air conditioning technician to
clean the inside before the summer season.
The refrigerant circuit is permanently welded: there is no need to recharge
the gas.
RETURN AIR INLET FILTER| REMOVING THE NOZZLE|
ROOM AIR INLET FILTER
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INDICATOR LIGHTS
Power (green light)
This shows that the electrical power is on. When the green light flashes,
Coolzy is waiting 1 – 2 minutes for the compressor to start cooling.
Water drop (white light)
In normal conditions, all the water condensed inside the cooler will evaporate
into the air emerging from the warm air outlet. This evaporation increases the
cooling performance in humid conditions.
If you remove the stopper, following the dehumidification instructions,
condensed water flows into the cable drawer instead. The water drop light
comes on when the cable drawer is full of water.
The water drop light also comes on if the cable drawer is not fully inserted
and flush with the back panel.
When it is extremely humid, greater than 95% lasting for several hours, water
can overflow from the cooler into the cable drawer.
If the water drop light is on, carefully remove the cable drawer and empty any
water. Make sure you push the drawer fully back in so it aligns with the back
panel.
Snowflake (blue light)
The cooler temperature so low that there is a risk that ice may form, damaging
the tubes in Coolzy. Some combinations of low temperature, humidity and
atmospheric pressure can lead to frosting. Allow the fan to operate for a few
minutes to warm up Coolzy. Also, check the air inlet filters for excessive
dust build-up. Ensure that there is nothing blocking the either of the air
inlets such as a curtain, cushion or bedding.
Thermometer (red light)
The compressor has overheated. Coolzy can be used in ambient temperatures up
to 40 °C. Above that temperature, the compressor may overheat. Wait for 10 –
20 minutes and try again. Avoid using Coolzy in direct sunlight. Check the air
inlet filters for excessive dust build-up. Ensure that there is nothing
blocking the either of the air inlets such as a curtain, cushion or bedding.
TROUBLESHOOTING
Symptom 1 – Green light is not on when trying to turn on Coolzy
Make sure the warm air deflector is fully open. Check to see if the power
supply is properly connected and on. If the power cord seems properly
connected, try a different power supply. Make sure you push the cable drawer
fully back in so it aligns with the back panel.
Symptom 2 – Green light is on with no cooling
The green light flashes, the fan runs and the compressor waits to start
cooling for about 90 seconds. This delay protects the compressor from damage.
If the green light is on and the fan is running, and there is no apparent
cooling after 2 minutes, check that Coolzy is in cooling mode. Press the
‘FUNC’ button on the remote until the snowflake icon appears to activate
cooling mode. Reduce the temperature setting because the thermostat may be
preventing the compressor from starting.
Symptom 3 – Water sloshing noise
In extremely high humidity, the production of condensed water may exceed the
capacity to evaporate water at the condenser heat exchanges. As more water
accumulates than in normal conditions, there may be a perceptible sound of
water cascading off the condenser at the back of the machine. This is normal
behaviour. If the sound is annoying, consider removing the rubber bung
temporarily. The water will drain into the cable drawer. However the machine
will stop cooling when the cable drawer is full of water.
Symptom 4 – Room seems to warm up
As you become accustomed to the cool micro climate that Coolzy provides for
you, the other parts of the room may seem to be warmer. There may be a slight
increase in air temperature in the space above the warm air deflector, but
this is normally not enough to heat up the lower part of the room.
Keep a door or window open. This is a healthy option. Position Coolzy’s warm
air outlet to face the open window or door so warm air can flow out more
easily. Unlike normal room air conditioners, Coolzy works just best with open
doors or windows and fresh air circulating.
A slight temperature increase can occur in a small room, especially if the
windows are closed. The setup instructions show how to minimize this effect.
Visit www.coolzy.com for more suggestions to improve
ventilation.
Symptom 5 – Gradual loss of cooling
Dust accumulating on the air filters will reduce the cooling. Clean all three
air filters following the instructions in this guide.
SUPPORT
www.coolzy.com provides FAQs and helpful information,
updated frequently, along with your local retailer and service agent
information and your local customer support phone number.
Ask any general, support, warranty or technical questions by emailing us at
contact@coolzy.com.
SPECIFICATIONS
COOLZY|
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Model number| PC9RL
Power source| 220 – 240 V AC, 50 Hz
Minimum operating voltage| 185 V
Rated power input| 430 W (40 °C, 35% RH)
Typical power input| 340 W (33 °C, 80% RH)
Compressor type| Rotary
Cooling capacity *| 800 W – 1100 W (3300 – 4500 BTU/hr)
Cool air flow rate| 80 – 115 m³/hr variable
Cool side temperature reduction| 8 – 16 °C
Refrigerant| R290, 109 g
Power cord, storage drawer †| 4 m, 2.5 litres
Operating environment (indoors)| 20 °C – 40 °C
Width| 273 mm (packed 310)
Depth| 385 mm (packed 410)
Height| 550 mm (packed 610)
Weight| 15.4 kg (packed 17 kg)
Noise ‡| 46 – 54 dBA
Wheels| 4 caster wheels
Remote control| infrared – temperature, fan speed adjust
Plumbing and pipes needed| None
Consumables needed| None
Filter cleaning| Check every 2 weeks
- Cooling power ranges up to 1100 Watt with automatic evaporation of condensed water, depending on local temperature and humidity. Electricity consumption varies depending on temperature and humidity.
† Drawer can optionally be used to collect condensed water.
‡ Apparent noise level in bedroom, depends on fan speed and furnishings.
Fuse parameters of the machine
Type: 5ET or SMT Voltage: 250V Current: 3.15 A
WARRANTY
Coolzy and accompanying accessories are warranted against defects in design,
materials and workmanship. The warranty period is 2 years from the date of
original purchase, provided the purchaser registers their details at
https://www.coolzy.com/eu/support/warranty/. Without purchase registration,
the warranty period is one year. This warranty is valid for the European
market.
Defects in equipment covered by this warranty will be repaired or replaced at
Close Comfort’s option at no charge to the purchaser for parts or direct
repair labour. The purchaser must return the product(s) to an authorized
Coolzy dealer or agent for warranty repairs. Home service is not provided. The
purchaser is responsible for all transportation costs and in-transit insurance
associated with returning the device to the authorized repair centre. In some
cases, the purchaser will be able to make the necessary repair or replacement.
Any part or equipment replaced under this warranty will be warranted in
accordance with the following provisions with the terms of this warranty for
the remainder of the original warranty period, or 60 days from return,
whichever is greater.
THE PROVISIONS OF THIS LIMITED WARRANTY ARE IN LIEU OF ANY OTHER WRITTEN
WARRANTY, EXPRESS OR IMPLIED, WRITTEN OR ORAL (INCLUDING WARRANTIES RELATING
TO MERCHANT ABILITY OR FITNESS FOR A PARTICULAR PURPOSE). IN NO EVENT SHALL
THE SELLER OR CLOSE COMFORT BE LIABLE FOR ANY SPECIAL, INCIDENTAL
CONSEQUENTIAL OR INDIRECT DAMAGES. Nothing in the limited warranty limits or
restricts any rights granted by European or national consumer legislation.
Warranty Exclusions
- Damage, trouble, or unsatisfactory performance of the device caused by faulty or improper external wiring, improper power supply, voltage fluctuations, power surges, or electromagnetic interference not originating from the device.
- Damage or problems caused by the use of an accessory, component or equipment not supplied by Close Comfort.
- Damage or trouble caused by storm, fire, flood, vandalism, negligence, accident, force majeure, earthquake, war, vermin, foreign matter entering the device (e.g. dirt and moisture) or any other outside organism.
- Freight charges (including insurance) incurred by the owner in returning the appliance to Close Comfort or an authorized repair center, dealer or agent.
- In-home or on-site service and all associated costs.
- Any consumable item (eg batteries) supplied with the device, unless the item is found to be defective at the time of purchase.
- Damage or problems or unsatisfactory performance resulting from operation in an environment where the environmental comfort of people is not the primary function of the unit.
- Damage caused by operation in a corrosive atmosphere or excessive humidity.
- Damage from problems or unsatisfactory performance resulting from operations under conditions other than those specified in the Close Comfort technical or commercial documentation applicable to the device.
- Damage, trouble or unsatisfactory performance resulting from misapplication of the unit.
- Damage or problems or unsatisfactory performance resulting from leaking or depleted batteries.
- Damage or problems caused by repair work carried out by someone who has not been authorized by Close Comfort to carry out repairs.
Owner responsibilities
a. Use and care of the device in accordance with the instructions for use
provided with the device.
b. Regular cleaning of air filters (every two weeks) and replacement if
damaged.
c. Replacement of exhausted batteries, in the remote control.
d. Cleaning of the heat exchangers by a qualified air conditioning technician
in the event of excessive accumulation of dust on the fins and the tubes.
Warranty claim steps
- Stop using the device and unplug it from any power source.
- Contact the retailer where the product(s) were purchased.
- If the product(s) were purchased directly from Close Comfort, report the defect and provide a detailed description with photos, sound recording or video if possible. Email these details to contact@coolzy.com, or use the contact form at https://www.coolzy.com/.
- Once acknowledgement is received, follow Close Comfort’s instructions on preparing to return and sending unit for warranty evaluation.
- Provide proof of original purchase, such as a retailer’s sales receipt, or proof of payment of an original tax invoice.
DISPOSAL
**** This marking indicates that this product should not be disposed with
other household wastes throughout the EU. To prevent possible hazards to the
environment or human health from uncontrolled waste disposal, please recycle
it to prove the sustainable reuse of material resources. Please ask ‘return
and collection’ systems or contact the retailer where the product was
purchased to return your used device, they can recycle products safely.
SAFETY PRECAUTIONS
CAUTION!
- Do not use means to accelerate the defrosting process or to clean, other than those recommended by the manufacturer.
- This appliance shall be stored in a room without continuously operating ignition sources (for example: open flames, an operating gas appliance or an operating electric heater.)
- Do not pierce or burn this appliance.
- Be aware that refrigerants may not contain an odour.
- This appliance shall be installed, operated and stored in a room with a floor area larger than 4 m².
Refrigerant gas
The refrigerant gas in this appliance is propane, also designated as R290
refrigerant. Propane is a natural gas with around 200 times less greenhouse
impact than R32, the refrigerant commonly used in split air conditioners.
Propane is highly flammable. The quantity used in this air conditioner is
about 100 grams, about the same as the flammable propellant gas used in spray
cans. You may not be able to smell leaking propane gas.
Before operating this appliance
This appliance must stand upright at all times. If you are unsure whether the
appliance has been stored or transported upright, stand the appliance upright
for at least 12 hours before turning it on to allow liquid refrigerant inside
the appliance tubing to drain to the bottom.
Make sure that the electric cable to the appliance is undamaged and in good
condition.
Operating this appliance
This appliance designed for localised cooling. It can also provide
dehumidification above a temperature of 20 ˚C by removing the rubber bung
temporarily. Do not use this appliance for purposes other than its intended
uses.
Operate this appliance in a ventilated space. We recommend keeping at least
one window or door at least partly open at all times.
Make sure that air can pass easily to the inlets and away from the outlets of
this appliance. Keep the appliance sufficiently far from curtains or furniture
to enable free air movement.
Operate the appliance on a horizontal surface to avoid water leakage. If you
use this appliance on a table or platform above the floor, make sure it cannot
roll off the platform by accident.
Do not use this appliance in a corrosive atmosphere.
Avoid using this appliance in a wet area such as a washroom. Avoid using this
appliance in an ambient temperature above 40 ˚C.
Wait at least 2 minutes after switching this appliance off before turning it
on again to avoid damage to the compressor. After switching on the unit, the
compressor will start after about 1.5 minutes as a further precaution to
protect the compressor.
The peak current needed by this appliance can be as high as 7 amps at the
instant of starting the compressor. Using an extension cord or unreliable
electrical connectors can be dangerous.
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 performed by children without supervision.
This appliance is not intended for use by persons (including children) with
reduced physical, sensory or mental capabilities, or lack of experience and
knowledge, unless they have been given supervision or instruction concerning
use of the appliance by a person responsible for their safety.
Children should be supervised to ensure that they do not play with the
appliance.
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. The
appliance shall be installed in accordance with national wiring regulations.
Do not operate your air conditioner in a wet room such as a bathroom or
laundry room.
Storing this appliance
Make sure that you store this appliance in a ventilated room at least 4 m² in
size without continuously operating ignition sources (for example: open
flames, an operating gas appliance or an operating electric heater with a
heating element directly in contact with air).
Make sure the appliance is stored safely to protect it from damage that could
cause refrigerant leakage. Local regulations may restrict the maximum number
of appliances that can be stored in one location.
Maintaining this appliance
Keep the appliance clean using a moist cloth with the least possible cleaning
agent if needed. Make sure you inspect the filters regularly and remove any
accumulation of dust by gently rubbing and rinsing the filters in clean water.
Do not use any sharp tools to remove dust or dirt from this appliance.
Servicing this appliance
An authorised and appropriately trained refrigeration or air conditioning
technician is required for repairs to the electric cable or servicing for any
component that requires removal of the outside casing. Close Comfort will
provide advice needed to enable technicians to service Close Comfort products.
All servicing must be performed in a well ventilated space.
Disposing this appliance
Do not pierce this appliance with a sharp object or burn this appliance. Take
it to an appropriate disposal or recycling centre. Close Comfort can provide
information on appropriate disposal sites if you need help.
Remove the batteries from the remote control before disposal and place them in
an appropriate battery recycling bin.
Make sure you comply with national regulations for refrigerant disposal.
Electrical supply
The air-conditioner can be connected only to an alternative current supply
with 50 Hertz frequency, within the voltage limits for this appliance, and
with system impedance no more than 0.219Ω. If in doubt, please consult an
appropriately trained electrician or your supply authority for system
impedance information.
Transport
This appliance must be transported upright, preferably protected by the
original packaging. Please comply with local transport regulations on handling
appliances with a small quantity of flammable refrigerant.
SERVICE INSTRUCTIONS FOR TECHNICIANS
This equipment is designed to be hermetically sealed at the factory and
normally there should be no need for servicing or maintenance of the
refrigeration circuit during the life of the appliance. In exceptional
circumstances, however, servicing may be necessary or desirable.
These instructions must be provided to any technician performing service on
this equipment. The technician must be appropriate qualified for the servicing
of electrically powered air conditioning or refrigeration equipment.
Prior to beginning work on systems containing flammable refrigerants, safety
checks are necessary to ensure that the risk of ignition is minimised. For
repair to the refrigerating system, the following precautions shall be
complied with prior to conducting work on the system.
All technicians and others working in the local area shall be instructed on
the nature of the work being carried out. Avoid working in confined spaces.
Section off the area around the workspace. Ensure that the conditions within
this area have been made safe by controlling flammable material. Work shall be
undertaken under a controlled procedure so as to minimize the risk of a
flammable gas or vapour being present while the work is being performed.
This equipment is charged with 109 grams of R290 (propane) refrigerant which
is less than the smallest amount at which special safety precautions are
prescribed by international standards. However, in order to afford the highest
standard of safety, we provide the following servicing instructions to be
followed by appropriately qualified technicians.
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 flammable
atmospheres. Ensure that the leak detection equipment being used is suitable
for use with flammable 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 must be available.
Have a dry powder or CO2 fire extinguisher adjacent to the charging area.
No ignition sources
No person carrying out work in relation to a refrigeration system which
involves exposing any pipe work that contains or has contained flammable
refrigerant shall use any sources of ignition in such a manner that it may
lead to the risk of fire or explosion. All possible ignition sources,
including cigarette smoking, should be kept sufficiently far away from the
site of installation, repairing, removing and disposal, during which flammable
refrigerant can possibly be released to the surrounding space. Prior to work
taking place, the area around the equipment must be surveyed to make sure that
there are no flammable hazards or ignition risks. “No Smoking” signs shall be
displayed.
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.
Check the refrigeration equipment
Where electrical components are being changed, they shall be fit for purpose
with 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.
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 on the equipment must be visible and legible. Markings and signs that
are illegible shall be replaced.
Refrigeration pipe or components must be 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.
Checks on electrical devices
Repair and maintenance for 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 there no live electrical components and wiring are exposed while charging, recovering or purging the system;
- That there is continuity of earth bonding.
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 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 apparatus is mounted securely.
Ensure that seals or sealing materials have not degraded such 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 may inhibit the effectiveness of some
types of leak detection equipment. Intrinsically safe components do not have
to be isolated prior to working on them.
Repair of 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
The following leak detection methods are deemed acceptable for systems
containing flammable refrigerants.
Electronic leak detectors shall be used to detect flammable refrigerants, but
the sensitivity may not be adequate, or may need re-calibration. (Detection
equipment shall be calibrated in a refrigerant-free area.) Ensure that the
detector is not a potential source of ignition and is suitable for the
refrigerant used. Leak detection equipment shall be set at a percentage of the
lower flammability limit of the refrigerant (2.1% for R290 propane) and shall
be calibrated for the refrigerant employed and the appropriate percentage of
gas (25 % maximum) is confirmed.
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.
If a leak is suspected, all naked flames shall be removed/extinguished.
If a leakage of refrigerant is found which requires brazing, all of the
refrigerant shall be recovered from the system, or isolated (by means of shut
off valves) in a part of the system remote from the leak. Oxygen free nitrogen
(OFN) shall then be purged through the system both before and during the
brazing process.
Removal and evacuation
When breaking into the refrigerant circuit to make repairs – or for any other
purpose – conventional procedures shall be used. However, it is important that
best practice is followed since flammability is a consideration. The following
procedure shall be adhered to:
- Remove refrigerant;
- Purge the circuit with inert gas;
- Evacuate;
- Purge again with inert gas;
- Open the circuit by cutting or brazing.
The refrigerant charge shall be recovered into the correct recovery cylinders.
The system shall be “flushed” with OFN to render the unit safe. This process
may need to be repeated several times. Compressed air or oxygen shall not be
used for this task. Flushing shall be achieved by breaking the vacuum in the
system with OFN and continuing to fill until the working pressure is achieved,
then venting to atmosphere, and finally pulling down to a vacuum. This process
shall be repeated until no refrigerant is within the system.
When the final OFN charge is used, the system shall be vented down to
atmospheric pressure to enable work to take place. This operation is
absolutely vital if brazing operations on the pipe-work are to take place.
Ensure that the outlet for the vacuum pump is not close to any ignition
sources and there is ventilation available.
Charging procedures
In addition to conventional charging procedures, the following requirements
shall be followed.
- Ensure that contamination of different refrigerants does not occur when using charging equipment. Hoses or lines shall be as short as possible to miniseries the amount of refrigerant contained in them.
- Cylinders shall be kept upright.
- Ensure that the refrigeration system is earthed prior to charging the system with refrigerant.
- Label the system when charging is complete (if not already).
- Extreme care shall be taken not to overfill the refrigeration system. Prior to recharging the system it shall be pressure tested with OFN. The system shall be leak tested on completion of charging but prior to commissioning. A follow up leak test shall be carried out prior to leaving the site.
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.
Become familiar with the equipment and its operation.
Isolate system electrically.
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.
Pump down refrigerant system, if possible.
If a vacuum is not possible, make a manifold so that refrigerant can be
removed from various parts of the system.
Make sure that cylinder is situated on the scales before recovery takes place.
Start the recovery machine and operate in accordance with manufacturer’s
instructions.
Do not overfill cylinders. (No more than 80 % volume liquid charge).
Do not exceed the maximum working pressure of the cylinder, even temporarily.
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.
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. 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 is 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 flammable refrigerants. In addition, 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.
COOLZY-PRO Model PC9RL User Guide
EN2022
Rev1.1
Documents / Resources
|
COOLZY-GO PC9RL Personal Portable Air
Conditioner
[pdf] User Guide
PC9RL Personal Portable Air Conditioner, PC9RL, Personal Portable Air
Conditioner, Portable Air Conditioner, Air Conditioner, Conditioner
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References
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