Harbor Freight Tools 91393 manual Troubleshooting

Troubleshooting

Note: Any repairs suggested below should be completed by an authorized service technician.

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

SKU 91393 PAGE 11