Maintenance and Service
19
DryCool HD Operator and Maintenance Manual
P00960167-1
5.3. Germicidal UVC Lights
Continuously operated emitters need to be replaced annually to maintain design output. As a note, emitter
on/off cycles should be minimized in order to maximize emitter life.
No more than an ordinary light bulb - SteriLight’s unique Emitters™ are simply changed once a year.
SteriLight is virtually maintenance-free between change outs!
Do not look at UVC lights when operating without adequate eye protection.
UVC can cause damage to unprotected eyes.
5.4. UV Light Change and Safety Warnings
UV Light Saftey Warnings:
1.
This unit contains a high energy ultra violet C-band (UVC) lamp. The UV radiation on this product is
in the highest ANSI/IENSA RP-27.3-07 group, Risk Group 3 (RG-3). Radiation at this level should not
be allowed to irradiate human tissue. The UV lamp is to be de-energized before changing the bulb or
servicing the dehumidifier. Precautions are to be taken to ensure that service personnel are adequately
protected at all times from UC radiation. RG-3 radiation is also present near the inlet of the duct. A
minimum of 8” (ft) un-perforated ducting is required to be connected to the inlet when the UV light
option is used.
2.
Ultra violet radiation is present inside unit. Avoid exposure. Always wear protective clothing.
Exposure may cause cancer and premature aging of the skin. Always wear protective eyewear. Failure
to do so may result in severe burns or long term injury to the eye. Never look directly into lamp. As
with natural sunlight, exposure can cause eye and skin allergy or allergic reactions. Medications or
cosmetics may increase sensitivity to the UV radiation. Consult a physician before operating this
product, if you are using medications or have a history of skin problems or believe yourself especially
sensitive to sunlight.
5.5. Troubleshooting
Fan runs with fan switch and ventilation timer OFF, but compressor cycles on & off.
Low ambient temperature and/or humidity causing unit to cycle through defrost mode.
Dirty air filter(s) or air flow restricted.
Defective compressor overload.
Defective compressor.
Fan does not run with fan switch in either position. Fan does not run with ventilation timer activated.
Compressor runs briefly but cycles on & off with humidity control turned to ON.
Check for 120V & 24V
Loose connection in fan circuit.
Obstruction prevents fan impeller rotation.
Defective fan.
Defective fan relay.
Evaporator coil frosted continuously, low dehumidifying capacity.
Dirty air filter(s) or air flow restricted.
Low refrigerant charge.
Dirty evaporator coil
