12
TROUBLESHOOTING
Motor does not start or runs very slowly
Check the wiring. Check all wire connections. After rechecking and the motor still does not start or runs slowly, there
is an internal motor problem and must be handled by an authorized Baldor Service Center.
Unusual Noise
Check the cooling fan on the top of the motor for damage. The fan must be replaced if damaged. Contact your
supplier for more information.
Check to see that the wheel turns freely. With the unit disconnected from the electrical supply, rotate the wheel by
hand. If the wheel is not turning freely, the wheel has slipped on the motor shaft. Determine if the wheel has slipped
toward the motor or away from the motor. Through the intake opening, slightly loosen the 2 set screws. Put thread
lock on the exposed threads of the screws. Move the wheel so that the motor side of the wheel is ¼” from the
housing. Tighten the screws and energize the motor.
If the noise is still present, contact a Baldor Service Center or www.baldor.com.
Smoke
Check the voltage to make sure the unit voltage and the source voltage are the same. Contact a Baldor Service
Center if damage has occurred to the unit.
Little suction or air movement immediately after start-up
Check for any obstructions in the inlet and the outlet of the blower.
Recheck wiring and wire connections. Reverse the wiring could cause the wheel to spin in the wrong direction. If
problem persist, contact a Baldor Service Center or www.baldor.com.
Reduced suction after running for a period of time
Check for any obstructions in the inlet or outlet. Remove obstructions
Check if intake hose or duct is kinked, crushed, or clogged
Check to be sure there is enough make up air. If not, open an outside window.
Not enough suction to exhaust pollutant
Check the nozzle positioning. For most efficient pickup, the nozzle should be 1 duct diameter or less from the source
of pollutant, and no more than 2 duct diameters away.
Check the length of the duct or hose and the number of bends in such. Excess length and/or bends will result in poor
pick-up. Contact your distributor for assistance.
Check the number of drops from the unit. Too many drops will cause poor pick-up. Contact your distributor for
assistance.
Summary of Contents for 73-501
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