Troubleshooting
CDQ-SVX01A-EN
19
Table 2. Troubleshooting energy wheels
Sy
mptom
Probable Cause
Recommended Action
Wheel will
not rotate
Motor is not running
The fuse or circuit breaker may be blown or open. Check the breaker/fuse box and replace.
There may be a loss of incoming power. Attempt to trace the power loss back to its source
and correct.
The motor may have failed. Check for power at the motor terminals. If present, disconnect
the belt from the motor pulley and see if the motor runs without a load. If it still doesn’t
run, replace the motor.
The motor may have failed because it is connected to a variable frequency drive.
Disconnect the VFD and run the motor on 60 Hz power only. Capacitor may be defective.
Replace. Refer to unit name plate for correct value.
Excessive friction at the
seals
Re-adjust the diameter seals per the Seal Adjustment procedure.
Drive belt is broken
Inspect visually. Replace the drive belt.
Wheel main shaft bearing
is seized
Replace the seized bearing.
Loss of
wheel
capacity
Wheel is not rotating
See above
Wheel is rotating too
slowly
Belt is stretched, slipping. Replace the belt
Seized bearing on the main shaft; replace the bearing.
Excessive friction in seals; adjust.
Media surface is
contaminated
Clean the media surfaces.
Replace the media if it is severely contaminated and cannot be cleaned. Consider adding a
contaminate filter before (upstream) of the wheel.
Wheel may be saturated
with liquid water
Check for moisture carryover from coil or other possible sources such as steam or water
leaks in the unit which may be spraying the wheel with water. Remove source.
