Harbor Freight Tools 91393 - Manual (Page 11)

SKU 91393 PAGE 11
Troubleshooting
Trouble Probable Cause Correction
1. Blown fuse.
2. Switch is burned out.
3. Connection wire is
loose or damaged.
Note: Any repairs suggested below should be completed by an authorized service
technician.
1. Replace fuse.
2. Replace the Switch.
3. Tighten or replace
the wire.
Motor does not run
at full speed. 1. Power voltage is too low.
2. Motor is damaged. 1. Test voltage.
2. Check and repair motor.
Motor will not reach
full power. 1. Incorrect power wiring.
2. Overload.
1. Have the unit rewired
professionally.
2. Reduce load by clean-
ing filters as necessary.
Motor overheats. 1. Using wrong voltage.
2. Motor is damaged.
1. Verify that the outlet is
115 VAC.
2. Check and repair the
motor.
Insufficient suction
power. 1. Inlet port blocked.
2. 3-Pocket Type Filter is
full.
3. Outlet port blocked.
1. Clean inlet port.
2. Empty 3-Pocket Type
Filter.
3. Clean the outlet port or
adjust the direction of
the outlet.
Unit is shaking. 1. The unit isn’t properly
anchored.
2. The unit isn’t level.
3. Worn or damaged
power cord.
1. Mount the unit firmly.
2. Level the unit.
3. Repair or replace
power cord.
Motor does not run
when power switch
is pressed on.