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TROUBLE SHOOTING
Symptom
Inadequate cooling
Noisy cooler
Pump fails to operate.
Fan fails to start.
Pump runs but no water circulation
or Pump runs but pads lack water
Continuous overflow of water.
Water entering cooler outlet.
Unpleasant odour.
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Cause
Under-sized cooler.
Under-sized ducts.
Clogged or dirty cooling pads.
Dry pads or lack of water while cooler is operating.
Dry patches in pads (LPQI Models only)
Insufficient air discharge openings or inadequate exhaust
from building, causing high humidity and discomfort.
Excessive ambient humidity (see also item above re
inadequate exhaust).
Fan out of balance due to dirt, etc.
Too much back pressure.
Tight duct bends.
Grilles too small.
Circuit breaker tripped.
Pump motor failure.
Main power circuit breaker tripped.
Fan motor burned out.
Low system voltage.
Check fault condition via the tri-colour LED on cooler
electronics module.
Controller failure.
Insufficient water in tank.
Water hoses blocked.
Pump strainer blocked.
Insufficient water supply pressure.
Water solenoid is installed incorrectly.
Float valve adjustment not correct.
Heavy pad deposits.
Loose water hose connections.
Water hose broken.
Cover not fitted on float valve.
Pads not fitted correctly into pad frames.
Incorrect or damaged pads.
New cooler pads.
Cooler located near source of unpleasant odour.
Algae in tank water.
Pads remain wet after shut down.
Heavy pad deposits.
Action
Replace with larger cooler.
Carry out cooling load design to determine correct size unit,
ducting and outlets required.
Clean or replace pads.
Check water distribution system for possible obstruction in
hoses. Check pump.
Check for blockages inside the lid water distribution channels
by lifting up the rubber channel cover. Clear out any debris.
Ensure the rubber channel cover is refitted and pressed
down flush all the way around the lid before refitting pad
frames or running the pump.
Make sure there is adequate provision for exhausting stale
air from building (open windows and doors).
On days during summer when ambient humidity is high the
cooler will not reduce the temperature as much as on drier
days. There is no remedy except to shut off the pump.
Clean the fan.
Re-evaluate design; improve duct layout; change grille sizes.
Check pump for faults. Replace if necessary.
Replace pump.
Check cause of overload. Reset circuit breaker.
Replace motor.
Consult with power supply authority.
Rectify fault as indicated and restart the cooler.
Replace controller.
Adjust float level.
Check and clean out blockage.
Clean pump strainer.
Check and confirm water supply pressure
Check installed in the correct water flow direction
Adjust float valve.
Clean or replace pads.
Tighten connections.
Replace cracked or broken hoses.
Replace float valve.
Install pad frame correctly.
Replace with new Chillcel pads.
Fill tank, run pump for a short period to wash pads, drain
tank, refill and repeat several times if odour persists. Odour
will dissipate after a number of hours of operation.
Remove source of odour or relocate cooler.
Drain tank (reservoir), clean thoroughly with strong cleansing
agent, refill, change pads.
Run fan on "vent" for 10 minutes after cooling cycle to dry
pads out.
Clean or replace pads.
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