Dehumidifier DUEX dehumidifiers are fully self-contained, packaged units which incorporate an air circulation fan and R-22 / R-134 a (environment friendly) refrigeration circuit. The fan draws room air into the machine passing it firstly across a refrigerated heat exchanger (evaporator). This cools the air, causing the moisture in the air-stream to be precipitated onto the evaporator as water. The electrical driving energy, the energy recovered from the air-stream and the latent energy gained from the dehumidification process is combined and fed to the refrigeration condenser which is thereby heated. The cool dry air from the evaporator passes across this heated condenser before being passed back into the room, dry and warm. The moisture collected from the process is fed away to waste. Due to the unique nature of a refrigeration circuit, energy removed from the air during the dehumidification process is converted into useable heat. Typically, for every 1kW of Electrical energy that a dehumidifier consumes, it will give out 2.5kW of heat energy. Thus by removing moisture from the air, rather than heating it to a high temperature, DUEX dehumidifiers will dry in a gentle, more controllable manner. What dehumidifier does.... By removing moisture from the air, dehumidifiers protect homes from the damages of excess humidity. They effectively help to prevent the mildewing of stored valuables, the rusting of tools, the swelling of floors, panel walls, drawers and doors. How a dehumidifier works.... The dehumidifier removes moisture from the air by passing the moist air over a cold dehumidifying coil. The moisture condenses out of the air on this coil and then drains from the coil into a bucket. A dehumidifier reduces the relative humidity of the surrounding air in two ways. The removal of moisture from the air ( as described above ) reduces its humidity. The relative humidity of the air is further reduced by heating as the air is discharged over the condenser and out the front. The air is actually heated several degrees in this process. It is normal for the surrounding air to slightly increase in temperature as the dehumidifier operates. This heating effect further reduces the relative humidity of the surrounding air. Q - Will dehumidifier work in a cold room? A - A dehumidifier will not operate satisfactory in a room that is below 18 degrees C. At this temperature it will become necessary to operate the dehumidifying coil below freezing temperatures (coil design and gas pressure need to be sufficient) in order to reduce the relative humidity to a reasonable value. Frost on coils usually will appear. Q - Dehumidifier unit is not operating at all, help. A - Unit may be unplugged. House fuse blown or circuit breaker tripped. Check the bucket, it may be full, empty it. Float not inside the bucket properly, adjust the float so it hangs in the bucket properly. Q - Dehumidifier unit does not seem to remove much moisture. A - Poor air-flow from a slow fan or the fan motor may have stop completely. Dirty coils, may need to be steam cleaned. Unit too close to the wall giving poor air-flow. Dehumidifiers have a compressor in side, it may not be running due to a bad start relay or a bad compressor or faulty float switch. Q - Dehumidifier is making a squealing noise. A - This often is a bad fan motor. It will need to be replaced. Q - Dehumidifier is not collecting water and seems to be making a clicking on and off noise. A - Often a clicking on and off noise is the compressor trying to start but cannot. Often this can be as minor as a bad start relay or as major as a bad compressor itself. Q - Dehumidifier is not collecting water. A - If the fan is operating ok, some models have a frost guard switch (round device attached to the evaporator coils). If this frost guard opens circuit it will stop the compressor from running at all. A ohm meter can be used to test the frost guard switch. M: 9324082483 E: duexindustrialsystems@gmail.com