LS600 PUMP — TROUBLESHOOTING (ELECTRICAL)

TABLE 12. ELECTRICAL TROUBLESHOOTING (continued)

MALFUNCTION

 

 

READING

PROBABLE CAUSE

SOLUTION

(Screen 1)

 

 

 

 

 

 

Burnt 12 V cycling solenoid.

Measure solenoid coil resistance. It should

 

read 6 ohms. Replace burnt solenoid.

THROTTLE SOLENOID

 

 

 

OPEN

 

 

 

Wire connection broken.

Replace broken wire.

 

 

 

 

The 12-volt cycling solenoid is shorted

Measure solenoid coil resistance. It should

THROTTLE SOLENOID

directly to ground.

read 6 ohms. Replace shorted solenoid.

 

 

SHORTED

Wire connection is shorted directly to the

 

 

Correct connection.

 

ground.

 

 

 

 

 

 

Burnt 12 V cycling solenoid.

Measure solenoid coil resistance. It should

 

read 6 ohms. Replace burnt solenoid.

 

 

FUEL SOLENOID OPEN

 

 

Wire connection broken.

Replace broken wire.

 

 

 

 

 

The 12-volt cycling solenoid is shorted

Measure solenoid coil resistance. It should

FUEL SOLENOID

directly to ground.

read 6 ohms. Replace shorted solenoid.

 

 

SHORTED

Wire connection is shorted directly to the

 

 

Correct connection.

 

ground.

 

 

 

 

 

 

Burnt 12 V cycling solenoid.

Measure solenoid coil resistance. It should

 

read 6 ohms. Replace burnt solenoid.

UNLOADER SOLENOID

 

 

 

OPEN

 

 

 

Wire connection broken.

Replace broken wire.

 

 

 

 

The 12-volt cycling solenoid is shorted

Measure solenoid coil resistance. It should

UNLOADER SOLENOID

directly to ground.

read 6 ohms. Replace shorted solenoid.

 

 

SHORTED

Wire connection is shorted directly to the

 

 

Correct connection.

 

ground.

 

 

 

 

 

ALTERNATOR FAILURE

Defective alternator.

Replace alternator.

 

 

 

V-BELT BREAKAGE

Engine blower cooling fan V-belt is broken

Replace v-belt.

requiring replacement.

 

 

 

 

 

PAGE 68 — MAYCO LS600 PUMP — OPERATION AND PARTS MANUAL — REV. #4 (9/15/11)

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Multiquip manual LS600 Pump Troubleshooting Electrical, Probable Cause Solution

LS600 specifications

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