This document describes the Homa HDH-20T33 dehumidifier, a device designed to remove excess moisture from the air in residential settings. It uses R290 refrigerant, which is environmentally friendly with no damaging influence on the ozone layer (ODP) and a negligible greenhouse effect (GWP). The device is suitable for use worldwide due to its efficient energy properties.
Function Description
The Homa HDH-20T33 dehumidifier is designed to effectively reduce relative humidity, preventing the growth of mold and mildew and mitigating the adverse effects of excessive humidity. It features a powerful moisture removal capability and a humidity monitor that displays the current air humidity. The auto mode automatically adjusts humidity levels to maintain optimal conditions. A 24-hour timer allows users to set the operating time. The device efficiently removes moisture and dust from the air, contributing to a healthier indoor environment. It boasts low power consumption, making it energy-efficient. The quiet fan operates with two speed settings. An auto-defrost function is included for low-temperature operation, and an auto shut-off/auto restart feature ensures continuous operation. Electronic controls provide ease of use, and a laundry drying function is available. The device also includes a nylon filter for air purification and offers continuous drainage or a 4.5-liter water tank for collected moisture.
Important Technical Specifications
- Model: HDH-20T33
- Power: 330 W
- Voltage/Frequency: 2.0A; AC220-240V/50Hz
- Refrigerant: R290 (propane), a flammable refrigerant with a low Global Warming Potential (GWP) and no Ozone Depletion Potential (ODP).
- Water Tank Capacity: 4.5 liters
- Operating Temperature Range: 5°C to 35°C
- Recommended Room Size: Greater than 4 m² for safe operation due to the flammable refrigerant.
Usage Features
Before You Begin:
Always read the operating instructions carefully before using the dehumidifier for the first time.
Installation:
Place the unit on a firm, level surface with at least 30 cm of free space around it to allow for proper air circulation. Never install the unit where it could be subject to heat sources (radiators, heat registers, stoves, or other heat-emitting appliances), oil or water splashes, direct sunlight, mechanical vibration or shock, excessive dust, or lack of ventilation (e.g., in cabinets or bookcases). Ensure the unit is installed in rooms larger than 4 m² and avoid areas where flammable gas may leak.
Operational Precautions:
- Power Supply: If the supply cord is damaged, it must be replaced by the manufacturer, its service agent, or similarly qualified persons. The appliance must 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.
- Handling: 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 aluminum fins of the unit. Do not operate the unit if it is dropped, damaged, or shows signs of product malfunction.
- Cleaning: Do not clean the appliance with any chemicals.
- Flammable Refrigerant (R290): 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 it. 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 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 odor. 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. Component parts are designed for propane and non-incentive and non-sparking. Component parts shall only be replaced with identical repair parts.
- Storage: The appliance shall be stored in a room without continuously operation sources (for example: open flames, an operating gas appliance or an operating electric heater). The appliance shall be stored so as to prevent mechanical damage from occurring.
- Burns: Do not piece or burn, even after use. Be aware that refrigerants may not contain an odor.
- Pipe-work: Pipe-work shall be protected from physical damage and shall not be installed in an unventilated space, if that space is smaller than 4m².
- National Regulations: Compliance with national gas regulations shall be observed.
- Ventilation: Keep any required ventilation openings clear of obstruction.
- Placement: The appliance shall be stored in a well-ventilated area where the room size corresponds to the room area as specified for operation.
Control Panel Functions:
- POWER button: Touch to switch the machine on or off.
- Mode Button: Touch to choose Auto, Sleep, and Continuous Dry modes.
- HUM Button: Touch to adjust the humidity level and choose timer hour.
- Timer: Touch to set a time for the unit to automatically start or stop.
- Fan speed button: Touch to select fan speed between high and low.
- Lock button: Hold this button to turn child lock function on or off.
- Digital Display: Displays humidity value, Timer setting, or Temperature.
Drainage:
- Water Tank Full Alarm: When the tank is full for 5 seconds, it sets the alarm. The water tank indicator turns red, and the unit buzzes for 5 times. Clear the alarm by pressing the power button to stop it. The compressor, fan shut down, and all functions freeze until the tank is emptied and back in right position.
- Manual Drainage: Empty water tank by manual.
- Continuous Drainage: Use gravity to drain condensate water by attaching a drain hose.
Maintenance Features
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.
- Remove the filter frame and take off the filter.
- Soak the strainer in warm water at about 40 degrees Celsius. Rinse gently with a neutral detergent. Use a vacuum cleaner's brush to gently remove dust from the screen.
- Put the filter back.
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.
Servicing Precautions:
- Qualified Personnel: 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.
- Checks to the Area: Prior to 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:
- Work Procedure: Work shall be undertaken under a controlled procedure so as to minimize the risk of a flammable gas or vapor being present while the work is being performed.
- General Work Area: All maintenance staff and others working in the local area shall be instructed on the nature of 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.
- 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., no 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.
- 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 is to be surveyed to make sure 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.
- 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:
- 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.
- 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 in a safe manner to avoid possibility of sparking.
- That there are no live electrical components and wiring are exposed while charging, recovering, or purging the system.
- That there is continuity of earth bonding.
Disposal:
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.
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