Troubleshooting - Donaldson Torit Unimaster UMA 40 Installation And Operation Manual

Troubleshooting

Problem
Fan blower and motor do
not start
Partial loss of suction
Total loss of suction
Clean-air outlet
discharging dust
Probable Cause
Improper motor wire size
Not wired correctly
Power supply circuit
Power supply circuit down
Damaged motor
Filters plugged
Motor speed low
Fan rotation backward
Blower motor stopped
Filters plugged
Obstructed ductwork
Filters not installed correctly
Filter damage, dents in the end
caps, gasket damage, or holes
in media
Unimaster Dust Collector, UMA 40 through 750
Remedy
Rewire using the correct wire gauge as specified by
national and local codes.
Check and correct motor wiring for supply voltage.
See motor manufacturer's wiring diagram. Follow
wiring diagram and the National Electric Code.
Check power supply to motor circuit on all leads.
Check power supply circuit for proper voltage.
Check for fuse or circuit breaker fault. Replace as
necessary.
Replace damaged motor.
Check that the dust container is not full. Turn fan OFF
and allow the controller to perform several complete
cleaning cycles. Replace filter bags.
Check all supply voltage, phase, and motor
connections.
Check and correct. See Preliminary Start-Up.
Check motor starter overloads, fuses, and interlocks.
Check motor connections.
Check that the dust container is not full. Turn fan OFF
and allow the controller to perform several complete
cleaning cycles. Replace filter bags.
Check and remove obstructions.
See Filter Installation.
Replace filters as necessary. Use only genuine
Donaldson replacement parts. See Filter Installation.
18