Grizzly T21888 Service, Troubleshooting, Symptom Possible Cause Possible Solution

SECTION 5: SERVICE

This section is provided for your convenience—it is not a substitute for the Grizzly Service Department. If you need help troubleshooting, replacing parts, or you are unsure of how to perform the procedures in this section, then feel free to call our Technical Support at (570) 546-9663.

Troubleshooting

Symptom	Possible Cause		Possible Solution
Motor will not start.	1.	Tank already pressurized.	1.	Motor will not start if tank
				is fully pressurized.
	2.	Thermal overload switch	2.	Wait 30 minutes for motor
		has tripped.		to cool, then push reset.
	3.	Start capacitor is at fault.	3.	Replace start capacitor.
	4.	Short circuit in motor or	4.	Inspect and repair all
		cord, or loose connec-		connections on motor for
		tions.		loose or shorted termi-
				nals or worn insulation.
	5.	Pressure switch is bad.	5.	Replace or adjust the
				pressure switch (Page
				20).
	6.	Thermal overload tripped.	6.	Push in reset button.
	7.	Motor is at fault.	7.	Replace motor.
Motor overheats and	1.	Compressor and motor	1.	Clean cylinder fins, motor
thermal overload turns		have restricted air flow.		fan, and vent area.
motor OFF.	2.	Air filter clogged.	2.	Inspect and clean air fil-
				ter.
	3.	Thermal overload switch	3.	Reduce load on com-
		has tripped.		pressor and allow longer
				cool down periods.
Loud repetitious noise	1.	Motor fan is hitting the	1.	Adjust fan cover mount-
coming from air com-		cover.		ing position, tighten fan,
pressor.				or shim fan cover.
Compressor knocking.	1.	Improper oil level.	1.	Check oil level and add
				oil (Page 20).
	2.	Air filter clogged.	2.	Inspect and clean air fil-
				ter.
	3.	Piston assembly loose.	3.	Inspect and repair piston
				and connecting rod.

Model T21888 (Mfg. since 2/10) -15-