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Symptom
Bearing is excessively hot
Motor stalls
Motor overheats
Excessive vibration
Excessive motor noise
Excessive fan noise
Premature belt wear
Filters collapsing
Damper seizing
Low coil capacity
Leaking coil
Drain pan overflow
CLCH-SVX05A-GB
7. Troubleshooting
Probable Cause
Overtensioned belts.
No lubricant (plummer block type).
Overlubrication.
Misaligned bearing.
Short circuit, phase to earth.
Overloaded motor.
Overloaded motor.
Motor fan damaged.
Poor pulley alignment.
Transport brackets not removed.
Overtensioned belts.
Fan/unit vibration isolator collapsed.
Motor mounting bolts loose.
Worn motor bearings.
Fan rubbing on inlet cone or guard.
Worn fan bearings.
Loose impeller.
Incorrect tension or alignment.
Dirt or grease on belts.
Belts rubbing.
Odd belts being fitted.
Blocked with dirt.
Air velocity too high.
Blade bent.
Spindle or mechanism loose.
Actuator loose.
Incorrect airflow.
Incorrect water flow.
Incorrect water temperature.
Coil tubes are blocked.
Expansion valve not operating DX.
Poor refrigerant distribution DX.
Header/exposed pipe damage.
Cracks in joints due to strain of
pipework on headers.
Swelling of joints due to frost.
(Water-hammer Steam Coils)
Incorrect hydraulic trapping.
Blockage in trap.
Recommended Action
Retension belts.
Apply grease.
Clean surface of grease and purge.
Correct alignment and check that shaft is level.
Check line phases and terminal block connection.
Reduce system load, fan driven speed or increase motor
capacity.
Reduce load or replace with larger motor.
Replace motor fan/clean.
Check pulley alignment.
Remove items used for transport only.
Retension belts.
Replace vibration isolator.
Tighten motor mounting bolts.
Replace bearings and seals.
Remove item and repair.
Replace bearings and seals.
Retighten hub.
Re-tension and align.
Clean belts and pulleys; check for grease leaks.
Remove obstruction.
Replace with full set.
Change at advised dirty condition.
Check unit running conditions.
Filters wrong size.
Replace with filter sizes as supplied
from Trane.
Repair or replace blade.
Tighten lever fixings.
Refit actuator correctly.
Check fan operating conditions.
Check water pumps, valves, and lines for obstructions.
Provide correct water temperature.
Clean and unblock tubes.
Check sensing-bulb location and valve operation.
Check for blockage in distributor and tubes.
Repair damaged part.
Check support and alignment of pipework and rectify.
Check frost protection method and correct, improve.
Trapping of steam supply.
Resize/fit trap and check air break arrangement.
Clean trap and refit.
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