Sears 919.18416 owner manual Troubleshooting Guide Contd, CAUSE, Correction

TROUBLESHOOTING GUIDE (Cont'd.)

PROBLEM

Motor will not run.

CAUSE, CORRECTION

Motor overload protection switch has tripped. Let the motor cool off and reset switch by pressing the red button located on the end of the motor.

Tank pressure exceeds pressure switch "cut- in" pressure.

Check valve stuck - fails to relieve head pres- sure; motor cannot start.

Loose electrical connections.

Posstble defective capacitor.

Possible defective motdr.

Fuse blown, circuit breaker tdpped.

Motor will start automatically when tank pressure drops below "cut-in"pressure of pressure switch.

Remove and clean or replace. (Do not overtighten.)

Check wiring connection inside pressure switch and terminal box area.

Return to Sears Service Center for inspection or replacement ifnecessary.

Have checked at a local Sears Service Center.

1.Check fuse box for blown fuse and replace if necessary. Re-set circuit breaker• Do not use a fuse or circuit breaker with higher rating than that specified for your particular branch circuit.

2.Check for proper fuse; only "Fusetron" Type T fuses are acceptable•

3.Check for low voltage conditions.

4.Remove check valve and clean or replace if it is stuck open or closed.

5.Disconnect the other electrical appliances from circuit or operate the compressor on its own branch circuit.

		Pressure release valve on pressure		switch	Bleed the line by pushing the lever on the pressure
		has not unloaded head pressure.			switch to the "OFF" position, opening the pressure
					release valve. Ifthe valve stilldoesn'topen, it must be
					replaced.
Restricted air	intake.	Dirty air filter.			Replace with new.
Compressor	is not supply-	Prolonged	excessive use of air.		Decrease amount of air usage.
ing enough air to operate		Compressor	is not large enough for	air re-	Check the accessory air requirement. If it is higher
accessories.
		quirement.			than the pressure supplied by your air compressor,

rou need a larger compressor.

Restricted air intake filter. Loose belt•

Hole in hose.

Check valve restricted.

Air leaks•

Replace air intake filter.

Adjust belt tension.

Check and replace if required.

Remove and clean or replace.

Tighten fittings. (See Air Leaks Section of Trouble- shooting Guide.)

Excessive	belt wear.	Loose	belt.
		Tight	belt.
		Loose	pulley.
Squealing	sound.	Loose belt.
		There is no oil in the compressor.

Adjust tension.

Adjust tension.

Check for worn keyway or pulley bore. Alsocheck for bent motor shaft. Replace parts if necessary.

Adjust belt tension.

Add oil.

11 -- Eng