MASTER DH 792 Professional Condensation Dehumidifers User Manual

USER AND MAINTENANCE BOOK

DH 792

TECHNICAL DATA

Fig. 1                                  Fig. 2

Fig. 3                                              Fig. 4

Fig. 5                                              Fig. 6

Fig. 7                                              Fig. 8

Fig. 9                                              Fig. 10

Fig. 11                                            Fig. 12

Fig. 13                                            Fig. 14

Fig. 15                                            Fig. 16

Fig. 17                                            Fig. 18

Fig. 19

Fig. 20

►► 1. BEFORE USE

► dehumidifier should be transported upright
► please do not cut off the power by pulling the wire
► please do not plug or unplug to startup or shut off the unit
► please be careful when moving the unit, do not mangle the wire
► please do not put fingers or sticks into the grid
► please prohibit child to climb, stand or sit on the unit
► please unplug the unit before cleaning or maintenance

NOTICE: WE SUGGEST THAT ANY REPAIRS SHOULD BE EXECUTED BY PROFESSIONAL SERVICEMEN

► please make sure the unit is grounded
► please do not use unit in airproof conditions
► please follow the instructions thoroughly

PRODUCT INTRODUCTION

Dehumidifiers can reduce air humidity in room and thus make people live comfortably and goods stored properly. Due to their neat appearance, compact configuration, high quality and easy operation, our dehumidifiers are widely used in research institutions, industry, transportation, medical centers, measuring institutions, stores, underground constructions, computer rooms, archives, warehouses, bathrooms, etc. Keeping apparatus, meters, computers, communication equipments, drugs and files away from moisture, eroding, and mildew.

The unit can only be moved after emptying the condensate tank, and in any case, it is ALWAYS REQUIRED to remove the plug from the socket before moving the appliance. Should water be accidentally spilled on the appliance, the unit must be immediately turned off and disconnected from the power supply, and may only be turned on after eight hours have elapsed.

CAUTION: The equipment contains R-454c refrigerant: this gas is flammable. The amount of charge is indicated in the data table of this user manual.
– Warning, the refrigerant is odourless.
– Do not use any means to accelerate the defrosting process or for cleaning other than those recommended by the manufacturer.
– The appliance must be placed in a room that does not have ignition sources continuously in operation (e.g. open flames, a gas appliance while running or an electric heater running).
– Do not drill holes into or burn the appliance.

GENERAL SAFETY RULES

The following safety signs, which must be respected, are affixed on the unit:

  Read the user manual.

Read the technical manual.

    Flammable material hazard.

CAUTION: It is strictly forbidden to remove the safety signs on the units.

REFRIGERANT CIRCUIT

The refrigerant gas used in these units is R-454c. The refrigerant circuit is built in compliance with current standards.

Flammable material hazard.
This unit is hermetically sealed and contains fluorinated gas R-454c GWP =146.

►► 2. CONSTRUCTION

► Dehumidifier FIG. 1

1. Handle
2. Control panel
3. Wheel
4. Water tank
5. Water tank panel
6. Filter grill
7. Hour counter

► Control panel FIG. 2

1. humidity display
2. operate indicator
3. defrost indicator
4. memory indicator
5. tank full indicator
6. memory
7. humidity up
8. humidity down
9. on/off button

►► 3. OPERATION INSTRUCTION OF KEYS:

► ON/OFF: Press ON/OFF, the unit runs in a circulation “ON-OFF-ON”.
► Humidity up and down: Press “humidity up and down” for once, the set humidity will increase or decrease by 1%. Press the key for 1.5 seconds and the set value will increase or decrease by 1%. Press continuously with the speed 5 points per second.
► Memory Key: Press the memory key and the memory indicator will light on to start the function of memory when the power cuts off. Press the memory key again; the memory indicator dies to shut off the function of memory when the power is cut off.

START ON:

► Plug on the unit gives off “di”.
► Press “ON/OFF”, the running indicator lights on, and the humidity display window lights on to display the previously set humidity. The initial humidity setting is 60% and 3 seconds later the humidity display window lights on to display current humidity.
► Press humidity up or down key to adjust the humidity needed. If the set humidity is 3% less than current humidity, the unit runs; if the set humidity is 3% more than current humidity, the unit stops running.
► When set humidity is less than 30%, the unit dehumidifies continuously, and the humidity display window reads “CO”.

SHUT OFF:

► Press “ON/OFF” when the unit is running, the unit stops running and all indicators die.

NOTICES:

► When the set humidity is higher than current humidity, the unit will not run.
► When the tank is full, the tank full indicator lights on, meanwhile, the compressor and the fan motor shut off automatically, and the buzzer gives off “DD” sound. Unless the tank is emptied, the buzzer gives the “DD” sound every 5 minutes. Only after emptying the tank the unit will start running again.
► When dehumidifying, the fan motor and compressor must be running at least for 3 minutes, once the compressor starts on. It is strongly forbidden to restart the compressor again within 3 minutes after the shut off.
► When operating in low temperature, the unit judges the system temperature automatically to defrost. When defrosting, the defrosting indicator lights on, the compressor runs but fan motor shuts off automatically.
► When you press the memory key, the controller will record current humidity even if the power is off. The unit will run under previous mode after power supplied again.
► The humidity display window shows humidity from 30% to 90%.
► Keep the unit unplugged if not used for a long time.

CONTINUES DRAINAGE:

► Keep the water tank inside, connect the pipeline, and pull the pipeline out from the right side of the machine (FIG. 19, 20).

►► 4. MAINTENANCE AND SAFETY

► FIG. 3
Do not use any relay, prolonged wire or adaptor. Otherwise, it might result in fire, radiation, or an electric shock.

► FIG. 4
Do not put the unit nearby stove or heater. Otherwise parts of unit might melt down or even catch fire

► FIG. 5
Do not use the unit in the direct sunshine, wind or rain. (only for indoor usage)

► FIG. 6
In case of any other problems (for example smell of scorch ), please shut off the unit and unplug it. Otherwise, it might result in fire, electric shock or other malfunctions.

► FIG. 7
Do not use the unit in places easily affected by chemicals. Strong chemicals might damage the unit and cause the leakage.

► FIG. 8
Please unplug the unit when not used for a long time.

► FIG. 9
When cleaning, shut off and unplug the unit. Otherwise, it might result in an electric shock.

► FIG. 10
When draining continuously, put the drainer for smooth drainage. If the ambient temperature is as low as freezing, do not drain continuously.

► FIG. 11
Do not repair or disconnect the unit yourself. Otherwise it might result in fire or an electric shock.

► FIG. 12
Put the unit stably. If the unit turns over, the water will flow out from the tank and damage the objects nearby. Moreover, because of the damage, it might result in fire or an electric shock

► FIG. 13
Make the filter more endurable. When off for a long time, seal the filter in a plastic bag.

► FIG. 14
Do not use the unit near water. The unit might be damaged when soaked in water, so as to result in fire or electric shock.

► FIG. 15
Use the standard electric source of 220-240V/~50Hz. Otherwise it might result in fire or electric shock.

► FIG. 16
Do not damage the wire. Do not put anything heavy on the wire or heat or pull the wire. Otherwise it might result in fire of an electric shock.

► FIG. 17
Clean the dirt on the plug and fix it tightly. If the plug is not fixed tightly, it might cause an electric shock.

► FIG. 18
Do not regard the plug as a switch. Otherwise it might result in fire or an electric shock.

►► 5. NOTICES ABOUT UNIT OPERATION

► When moving the unit, do not tilt over 45°to avoid any damaging of the compressor.
► The unit should be operated between 5°~32°.
► When dehumidifying, because of the heat resulted from the running compressor, the indoor temperature will rise by 1°~3°. Such a reaction should be considered as normal.
► When indoor temperature is below 10°, and the ambient absolute humidity is quite low, it is unnecessary to use the machine.
► Air inlet and air outlet should be at least 10cm away from the wall.
► Try to keep the room closed to enhance the dehumidification effect.
► Too much dirt on the filter affects dehumidification, may even result in malfunctioning of it, thus it should be cleaned at least once a month.

If there is a great amount of powder in the air, the filter must be cleaned once a week, or even every day. Pull the front panel out and clean the filter. If necessary, you may slightly knock all over the filter, use a vacuum cleaner to remove bigger pieces of dirt or even wash the filter in warm clean water (≤40% with some neutral detergents) and then dry it.

►► 6. TROUBLE-SHOOTING

UNIT DOES NOT WORK

► Analysis

1. Power cut
2. Switch off
3. Unplugged
4. Fuse melted
5. Tank full

► Solution

1. Power on
2. Switch on
3. Plug on
4. Exchange fuse
5. Empty the tank and replace it

DEHUMIDIFIES IN INADEQUATELY

► Analysis

1. Filter choked by dirt
2. Some barrier in air inlet or outlet
3. Door or windows open
4. Refrigerant leakage

► Solution

1. Clean the filter
2. Remove the barrier
3. Close the door and windows and seclude from the sunshine
4. Contact the manufacturer or seller

WATER LEAKAGE

► Analysis

1. The unit is inclined
2. Drainer choked

► Solution

1. Adjust the unit to be stable
2. Pull out the panel and remove the barrier

STRANGE NOISE

► Analysis

1. Until instable
2. Filter choked

► Solution

1. Place the unit stably
2. Clean the filter

► When above malfunctions occur and they could not be removed, please contact the supplier or seller, do not disassemble the machine yourself.
► When the unit starts or stops running, it makes certain noises of refrigerating circulation, which should not be considered as a malfunction.
► Hot air coming from the air outlet is normal.

INSTRUCTION ON MALFUNCTION CODES:

The unit analyzes malfunction automatically and displays the code on the humidity window.

MALFUNCTION DISPLAY E1
► Sensor of humidity

MALFUNCTION DISPLAY E2
► Sensor of refrigeration pipeline

►► 7. ACCESSORIES

The dehumidifier is adjusted to work with the water pump installed in place of the water tank. The pump socket is located inside the tank hole.

  CAUTION: The unit contains substances and components dangerous for the environment (electronic components, refrigerant gas and oils). At the end of its useful life, in the event of dismantling the unit, the operation must be carried out by specialised refrigerating personnel.

The unit must be sent to specific specialised centres for the collection and disposal of equipment containing dangerous substances. The refrigerant fluid and the lubricating oil contained in the circuit must be recovered, in accordance with the regulations in force in your country.

CE CONFORMITY CERTIFICATE

DANTHERM S.p.A.

Via Gardesana 11, 37010- Pastrengo (VR), Italy

Product: –

DH 792

We declare that it is compliant with:

2014/30/EU, 2014/35/EU, 2011/65/EU

EN 60335-1:2012+A11:2014+A13:2017,
EN 60335-2-40:2003+A11:2004+Al2:2005+A1:2006+A2:2009+A13:2012,
EN 55014-1:2017, EN 55014-2:2015,
EN 61000-3-2:2014, EN 61000-3-3:2013, EN 62233:2008

Pastrengo, 04.02.2021

Stefano Verani (Member of the Board)

– DISPOSAL OF THE PRODUCT
– This product has been designed and manufactured with top-quality materials and components, which can be re-cycled and re-used.
– When a crossed-wheely bin symbol is attached to the product, it means that the product is protected by the, 2012/19/UE European Directive.
– Please obtain information regarding the local differentiated collection system for electrical and electronic products.
– Respect local Standards in force and do not dispose of old products as normal domestic waste. Correct disposal of the product helps to prevent possible negative consequences for health, the environment and mankind.

NOTE:

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