Use and Care Manual

TROUBLESHOOTING GUIDE (CONTINUED)

MAINTENANCE /

REPAIR

TROUBLESHOOTINGOPERATION

ASSEMBLY /

INSTALLATION

SAFETY /

SPECIFICATIONS

GETTING STARTED

SYMPTOM POSSIBLE CAUSE(S) CORRECTIVE ACTION

Motor hums and runs slowly or

not at all

1. Low voltage or no voltage 1. Check with voltmeter, check line voltage to unit. If

overload or reset switch trips repeatedly, find and correct

the cause. See next item

2. Shorted or open motor winding 2. Replace motor

3. Malfunctioning check valve or unloader

valve

3. Replace check valve or unloader valve

4. Malfunctioning pressure switch - contacts

will not close

4. Repair or replace pressure switch

Reset mechanism cuts out

repeatedly or fuses blow

repeatedly

1. Pressure switch set too high 1. Adjust or replace

2. Malfunctioning check valve 2. Clean or replace faulty valve

3. Incorrect breaker/disconnect size 3. Be sure that breakers/disconnect are rated properly

4. Malfunctioning motor 4. Replace motor

5. Loose Wiring 5. Check all electrical connections