21
COOLING PADS NOT WETTING
1. Ensure that the bottom has water.
2. Ensure that the motor switch is in the start position and the pump switch is in the on position.
3. Ensure that the pump is running.
4.
Pump is running but no water
:
a. Ensure hose is connected.
b. Inspect and clean the pump discharge filter.
c. Inspect and clean the pump intake filter.
d. Ensure the impeller on the inside of the pump turns freely – see figure WC-1HP-DHL.05 –
Pump.
e. Filter may have an air lock. Remove clear filter cap and screen. Turn on pump until water
flows through. Replace cap and screen.
5. Pump is not running
a. A certified electrician must check wiring from pump to pump selector switch.
b.
If the wiring is correct, replace the pump
FOAMING
Foaming is generally caused by a dirty water supply or contaminated water in the bottom.
1. If foaming occurs, stop the unit, drain it and flush the bottom and insides thoroughly with clean water.
2. Clean the pads and do not use any kind of chemical cleaners. Refer to the “Regular Cleaning” section
for proper procedure for cleaning the pads.
3.
Reassemble, refill and restart.
LINE CLOGS OR OBSTRUCTIONS (LITTLE OR NO WATER FLOW)
Depending on the cleanliness of the water and the amount of dirt, dust, etc. in the supply air, you may have to
clean the PVC pipes from time to time. Your own experience will dictate the frequency.
1. Turn off the unit and unplug it.
2. Remove the plastic knob from the threaded rod in the blower duct.
3. Remove the blower duct and set it aside.
4. Remove the two screws that hold on the unit's top cover.
5. Remove the top cover and set it aside.
6. Locate the four PVD pipes in the top metal channel. Each PVC pipe is secured to the "Y" connector
by a single screw. Remove this screw from all four PVC pipes.
7. Grip the opposite end of each PVC pipe with pliers and gently twist it out of its "Y" connector.
8. Remove the plastic mesh socks from the PVC pipes and clean them in warm, soapy water.
9. Direct a jet of water at the series of outlet holes in the PVC pipes to blow them clear.
10. Direct the water nozzle into the end of each pipe and blow them clear. Inspect them for cleanliness
and repeat if necessary.
11. Reinstall the socks over the PVC pipes taking care not to bunch them.
12. Replace the PVC pipes taking care to ensure the water outlet holes are facing inwards at 90°. There
is a mark on the PVC pipe that indicates the position of the holes.
Note: Ensure you push the PVC pipes fully into the "Y" connectors so the retaining screws go
through the connector and the pipe to hold them in.
TROUBLESHOOTING
