MUHLER MHD-2045DHI Dehumidifier Instruction Manual

MUHLER MHD-2045DHI Dehumidifier

Product Information

Facility

Place the dehumidifier on a firm and level surface in an area with at least 30cm of free space around it to allow for proper air dehumidification.

Safety Precautions

• Read the user manual carefully before operation.
• Only service personnel with valid certification should work on or break into the refrigerant circuit.
• Maintenance and repair should be performed as recommended by the equipment manufacturer.
• If you require assistance or have any questions, contact the dealer services.

Operation

To operate the dehumidifier

1. Ensure proper installation and placement of the unit.
2. Press the POWER button to switch the machine on or off.
3. Use the MODE button to choose between Auto, Sleep, and Continuous Dry mode.
4. Adjust the humidity level and set the timer hour using the HUM button.
5. Set a time for the unit to automatically start or stop with the TIMER button.
6. Select the fan speed between high and low using the FAN SPEED button.
7. Long press the LOCK button to enable or disable the child lock function.
8. The digital display shows the humidity value, timer setting, or temperature.

Please read the instructions manual before using the appliance for the first time and save it for future reference

BEFORE YOU BEGIN

Please read the operating instructions carefully before using your dehumidifier for the first time.

PRODUCT DESCRIPTION

• The dehumidifier is used to remove excessive moisture from the air. The resulting reduction in relative humidity protects buildings and their contents from the adverse effects of excess humidity.
• The environmentally friendly R290 is used as the refrigerant. R290 has no damaging influence on the ozone layer (ODP), a negligible greenhouse effect (GWP) and is available worldwide. Because of its efficient energy properties, R290 is highly suitable as a coolant for this application. Special precautions must be taken into consideration due to the coolant’s high flammability.

SYMBOLS FROM THE UNIT AND USER MANUAL

THE FOLLOWING SHOULD ALWAYS BE OBSERVED FOR SAFETY

• This appliance is intended to be used by expert or trained users in shops, in light industry and on farms, or for commercial use by lay persons.
• This appliance can be used by children aged 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 the 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 done by children without supervision.
• The unit is designed only for use with R-290(propane) gas as the designated refrigerant.
• The refrigerant loop is sealed. Only a qualified technician should attempt to service!
• Do not discharge the refrigerant into the atmosphere.
• R-290 (propane) is flammable and heavier than air.
• It collects first in low areas but can be circulated by the fans.
• If propane gas is present or even suspected, do not allow untrained personnel to attempt to find the cause.
• The propane gas used in the unit has no odour.
• The lack of smell does not indicate a lack of escaped gas.
• If a leak is detected, immediately evacuate all persons from the store, ventilate the room and contact the local fire department to advise them that a propane leak has occurred.
• Do not let any persons back into the room until the qualified service technician has arrived and that technician advises that it is safe to return to the store.
• No open flames, cigarettes or other possible sources of ignition should be used inside or in the vicinity of the units.
• Parts are designed for propane and non-incentive and non-sparking. Parts shall only be replaced with identical repair parts.

FAILURE TO ABIDE BY THIS WARNING COULD RESULT IN AN EXPLOSION, DEATH, INJURY AND PROPERTY DAMAGE

FOR YOUR SAFETY

Your safety is the most important thing we are concerned!
Please read this manual carefully and fully understand it before operating your dehumidifier.

OPERATIONAL PRECAUTIONS

WARNING- to reduce the risk of fire, electric shock or injury to persons or property:

• 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 disconnected from its power source during maintenance.
• Always operate the unit from a power source of equal voltage, frequency and rating as indicated on the product identification plate.
• Always use a power outlet that is grounded.
• Unplug the power cord when cleaning or when not in use.
• Do not operate with wet hands. Prevent water from spilling onto the unit.
• Do not immerse or expose the unit to rain, moisture or any other liquid.
• Do not leave the unit running unattended. Do not tilt or turn over the unit.
• Do not unplug while the unit is operating.
• Do not unplug by pulling on the power cord.
• Do not use an extension cord or an adapter plug.
• Do not put objects on the unit.
• Do not climb or sit on the unit.
• Do not insert fingers or other objects into the air outlet.
• Do not touch the air inlet or the aluminium fins of the unit.
• Do not operate the unit if it is dropped, damaged or showing signs of product malfunction.
• Do not clean the appliance with any chemicals.
• Ensure the unit is far away from fire, inflammable, or explosive objects.
• The unit shall be installed according to national wiring regulations.
• Do not use means to accelerate the defrosting process or to clean, other than those recommended by the manufacturer.
• The appliance shall be stored in a room without continuous operating sources (for example: open flames, an operating gas appliance or an operating electric heater).
• The appliance shall be stored to prevent mechanical damage from occurring.
• Do not pierce or burn, even after use.
• Be aware that refrigerants may not contain an odour.
• Pipe-work shall be protected from physical damage and shall not be installed in an unventilated space if that space is smaller than 4m².
• Compliance with national gas regulations shall be observed.
• Keep any required ventilation openings clear of obstruction.
• The appliance shall be stored in a well-ventilated area where the room size corresponds to the room area as specified for operation..

WARNING: Any person who is involved with working on or breaking into a refrigerant circuit should hold a current valid certificate from an industry- accredited assessment authority, which authorizes their competence to handle refrigerants safely by an industry-recognised assessment specification.
Servicing shall only be performed as recommended by the equipment manufacturer. Maintenance and repair requiring the assistance of other skilled personnel shall be carried out under the supervision of the person competent in the use of flammable refrigerants.
If you don’t understand something or need help, please contact the dealer services.

SAFETY PRECAUTIONS ON SERVICING
Please follow these warnings when to undertake the following when servicing a dehumidifier with R290.

1. Checks to the area
   Before beginning work on systems containing flammable refrigerants, safety checks are necessary to ensure that the risk of ignition is minimized. For repair to the refrigerating system, the following precautions shall be complied with prior to conducting work on the system.

2. Work procedure
   Work shall be undertaken under a controlled procedure to minimize the risk of flammable gas or vapour being present while the work is being performed.

3. General work area
   All maintenance staff and others working in the local area shall be instructed on the nature of the work being carried out. Work in confined spaces shall be avoided. The area around the workspace shall be sectioned off. Ensure that the conditions within the area have been made safe by control of flammable material.

4. Checking for the presence of refrigerant
   The area shall be checked with an appropriate refrigerant detector before 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. no sparking, adequately sealed or intrinsically safe.

5. Presence of a 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 fire extinguisher adjacent to the charging area.

6. No ignition sources
   No person carrying out work with a refrigeration system that 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, repair, removal and disposal, during which flammable refrigerant can be released to the surrounding space. Before work occurs, the area around the equipment is to be surveyed to ensure there are no flammable hazards or ignition risks. “No Smoking” signs shall be displayed.

7. Ventilated area
   Ensure that the area is in the open or 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.

8. 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.
   The following checks shall be applied to installations using flammable refrigerants:

9. The charge size is by the room size within which the refrigerant-containing parts are installed;

10. The ventilation machinery and outlets are operating adequately and are not obstructed;

11. If an indirect refrigerating circuit is being used, the secondary circuit shall be checked for the presence of refrigerant;

12. Marking to the equipment continues to be visible and legible. Markings and signs that are illegible shall be corrected;

13. refrigeration pipe or components are installed in a position where they are unlikely to be exposed to any substance that may corrode refrigerant-containing components unless the components are constructed of materials that are inherently resistant to being corroded or are suitably protected against being so corroded.

14. Checks to electrical devices
    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:

• those capacitors are discharged: this shall be done safely to avoid the 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

PRODUCT OVERVIEW

FEATURES

• Powerful moisture removal
• Front display to show humidity
• Auto mode adjusts humidity levels
• 24-hour timer to set the time of operation
• Effectively remove moisture, dust from the air
• Low power consumption-energy efficient
• Quiet fan has two speed settings
• Auto-Defrost at low temperature
• Auto shut-off/ auto restart
• Electronic control
• Laundry drying function
• Nylon Filter
• Continuous drainage or 4.5L water tank

INSTALLATION

LOCATION

1. Place the unit on a firm, level surface in an area with at least 30cm of free space around it to allow for proper air circulation.
2. Never install the unit where it could be subject to
3. Heat sources such as radiators, heat registers, stoves or other products that products that produce heat.
4. In an area where oil or water may be splashed
5. Direct sunlight
6. Mechanical vibration or shock
7. Excessive dust
8. Lack of ventilation, such as cabinet or bookcase

WARNING

• Install the unit in rooms that exceed 4 m².
• Do not install the unit in a place where inflammable gas may leak

NOTE
The manufacturer may provide other suitable examples or may provide additional information about the refrigerant odour.

OPERATING THE DEVICE SAFELY

• Check the device after unpacking for any damages or scratches on it.
• Operate this unit at an ambient temperature from 5°C to 35°C.
• Do not use in outdoors. This dehumidifier is intended for indoor residential applications only.
• Do not operate near walls, curtains, or other objects that may block the inlet and outlet.
• Keep the air inlet and outlet free of obstacles.
• Adjusting the wind deflector in the upward direction before start-up.
• If tipped more than 45°, allow the unit to set upright for at least 24 hours before start-up.
• Keep doors and windows closed for better energy saving.
• Do not operate or store the unit in direct sunlight or rain.
• It is normal for air outlets to feel warm to the touch after a continuous operation on hot days.
• Empty the water tank before moving the device.
• Make sure the Water tank is correctly fitted otherwise the unit will not operate properly.
• The dehumidifier starts up in the mode selected when the unit was last used.
• The dehumidifier starts dehumidifying if the room humidity is 3% higher than the selected humidity.
• There is a protective 3-minutes time delay of the compressor. Wait 3 minutes for the dehumidifier to resume dehumidification.

OPERATION

• 3 Color Digital Display
• Ambient Humidity≤45%, The light show Blue
• 45 Ambient Humidity 65% , The light show Green Ambient Humidity≥65%, The light show Red
• If the LED display an error code, the light will also show red.

FUNCTION KEYS AND INDICATORS

1. POWER button Touch this button to switch the machine on or off.
2. Mode Button Touch this button to choose Auto, Sleep and Continuous Dry modes.
3. HUM Button Touch this button to adjust the humidity level and choose the timer hour.
4. Timer button Touch this button to set a time for the unit to start or stop automatically.
5. Fan speed button Touch this button to select fan speed between high and low.
6. Lock button Long press this button to turn the child lock function on or off.
7. Digital Display Displays humidity value, Timer setting or Temperature

INDICATOR

From the bottom left to bottom right

Power button
In the standby state, Touch this button to turn on, the operation indicator lights up the default fan speed is high, and the default humidity is 50%. In the power-on state, Touch this button to turn off, the running indicator light goes off and the compressor stops immediately, and then the fan shuts down after 30 30-second delay.

Mode button
Touch the mode key to switch between automatic, Sleep and dry mode.
Automatic mode: when environmental humidity ≥ set humidity +3%, the fan starts working and the compressor starts working after 3 seconds.
When environmental humidity ≤ set humidity -3%, the compressor stops working and the fan stops working after 30 seconds delay.
Touch the HUM” “ button button to adjust the humidity level in automatic mode.
Both fan speed and humidity can be adjusted under auto mode.

• Drying mode: The compressor keeps working without control by humidity; Fan speed can be adjusted, but the target humidity level cannot.
• Sleep Mod e: Touch the sleep button, the button lights up and starts the sleep function. After no operation for 10 seconds, all indicators turn dark gradually and the wind speed is automatically switched from high to low, press any button to wake up the indicator. Touch the sleep button again to exit the sleep mode.

Timer button
Touch the timer button to set the 00-24 hour timing function. Display panel
”88 “flashes and will show timer hour, Touch the HUM” “ button, the value increases 1 hour, and the value displayed on the “88” display screen.

• In the running state, use the timer function to turn off the machine regularly”.
• In the standby state, use the timer function to turn on the machine regularly”.
• Set the time to “00” to cancel the timing function.

Speed
High wind – low wind cycle, Touch the button once to switch and then the corresponding indicator lights up. In continuously
drying mode, sleep mode and defrosting period, the wind speed cannot be changed.

Child lock
Long press the child lock button to turn on or off the child lock function.

DRAINAGE

Water Tank Full Alarm

Water Tank Indicator
When the tank is full for 5 seconds, it sets the alarm. The water tank indicator turns red and the unit buzzes 5 times.

Clear the alarm
When the buzz is on, touch any button to stop it. The compressor, and fan shut down and all the functions freeze until the tank is emptied and back in the right position.

There are two ways of removing collected water produced by the unit.

A. Manual draining: Empty the water tank manually.
B. Continuous draining: Use gravity to drain condensate water by attaching a drain hose.

EMPTYING THE WATER TANK

The water tank built-in unit, will fill up and shut the unit down once it is full. It will run again once you empty the water tank and install it properly.

• When the tank is full, the unit will make a buzzing sound, and the “Water Full” light will turn on.
• Touch the POWER button to turn off the unit.
• Pull on the water tank and simply slide out of the body of the dehumidifier.
• Empty the water into an area with a drain or outside.
• Clean the inside of the tank as well as the outside.
• Replace the empty tank back into the unit.
• Press the POWER button to resume operating.
• If the Water Full light does not extinguish, check that the float is correctly in place.

CONTINUOUS DRAINING
For continuous operation or unattended dehumidification, please connect the attached drain hose to the unit. Condensate water can automatically flow into a bucket or drain by gravity.

• Set the unit in a horizontal surface and stable position.
• Switch off the unit before operating.
• Securely and properly connect the drain hose and make sure it is not kinked and clear of obstruction.
• Place the outlet of the hose over a drain or bucket and ensure that water can freely flow out of the unit.
• Do not submerge the end of the hose into the water; otherwise, it can cause an “Air Lock” in the hose.

To avoid water spillage:

• As the negative pressure of the condensate drain pan is large, tilt the drain hose downward toward the floor. It is appropriate that the degree of inclination should exceed 20 degrees. Straighten the hose to avoid a trap existing in the hose. Straighten the hose to avoid a trap existing in the hose.

MAINTENANCE

CLEANING THE AIR FILTER (every two weeks) Dust collects on the filter and restricts the airflow. The restricted airflow reduces the efficiency of the system and if it becomes blocked it can cause damage to the unit. The air filter requires regular cleaning. The air filter is removable for easy cleaning. Do not operate the unit without an air filter, or the evaporator may be contaminated.

1. Remove the filter frame and take off the filter.
2. Soak the strainer in warm water at about 40 degrees Celsius. Rinse gently with a neutral detergent. Use the vacuum cleaner’s brush to gently remove dust from the screen.
3. Put the filter back.

TROUBLE SHOOTING

1. FUNCTIONING TEMP.
2. 5°C ≤ Ambient Temp. ≤ 35°C
3. When the ambient temp is lower or higher than the functioning temp, the dehumidifier stops.
4. When 5°C ≤ Ambient temp. ≤ 16°C, the compressor automatically defrosts at intervals; during defrosting, the compressor stops and the fan keeps running.
5. BEFORE CALLING FOR SERVICE
   Before contacting professional service, please review the trouble shooting list that includes common occurrences that are not the result of a defect in workmanship or materials.

DECOMMISSIONING

STORAGE
Long-term storage – If you will not be using the unit for an extended period (more than a few weeks) it is best to clean the unit and dry it out completely. Please store the unit per the following steps:

1. Press the power button to switch off and unplug the unit.
2. Drain the remaining water from the unit.
3. Clean the filter and let the filter dry completely in a shaded area.
4. Collect the power cord at the water tank.
5. Re-install the filter at its position.
6. The unit must be kept in an upright position when in storage.
7. Preserve the machine in ventilating, dry, non-corrosive gas and safe place indoors.

ATTENTION:
The evaporator inside the machine has to be dried out before the unit is packed to avoid component damage and moulds. Unplug the unit and place it in a dry open area for days to dry it out. Another way to dry the unit is to set the humidity point more than 5% higher than the ambient humidity to force the fan to dry the evaporator for a couple of hours.

DISPOSAL
WARNING: Releasing refrigerant into the atmosphere is strictly forbidden!
Do not dispose of electrical appliances as unsorted municipal waste, use separate collection facilities. Contact your local government for information regarding the collection systems available. If electrical appliances are disposed of in landfills or dumps, hazardous substances can leak into the groundwater and get into the food chain, damaging your health and well-being

The symbol means that the product should not be disposed of with household waste to avoid environmental contamination and human injury. Take the appliance to a specialist recycling center for electrical appliances.

FAQ

Q: What should I do if there is a refrigerant leak?
A: If there is a refrigerant leak and it comes in contact with fire or heating parts, it can create harmful gas and pose a risk of fire. In such cases, evacuate the area immediately and contact professional service personnel for assistance.

Q: How do I clean the air filter?
A: To clean the air filter, follow these steps:

• Switch off the dehumidifier and unplug it from the power source.
• Locate the air filter on the back of the unit.
• Remove the air filter from its housing.
• Wash the air filter with mild soap and water.
• Allow the air filter to dry completely before reinserting it into the unit.

MANUFACTURER AND IMPORTER:
Keten LTD.; VAT: BG123670208; fl. 7, 39 Vladimir Vazov blvd., 1836, Sofia, Bulgaria
Phone: +359 2 8691023;
Fax: +359 2 8691025;
e-mail: sales@keten.bg;
www.keten.bg

References

• Homepage | Keten

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