Multiquip px400 Manuel D’Utilisation

Pump Fails To Start

Incorrect voltage/amps?

Check that proper voltage (115 VAC, 60 Hz, single-
phase) is being supplied to the pump.  Also check that 
there is an adequate amount of current (amps) to run 
the pump. Check power source circuit breaker.

Check electrical connec-
tions?

If using float switches check wiring, inspect power 
cord.

Blown power fuse or tripped 
circuit breaker?

Replace fuse check circuit breaker, check cause of 
blown fuse or tripped breaker.

Impeller locked?

Disconnect power cord and check for clogging. Un-
clog pump. Check overload protection device.

Wet motor windings?

Use multimeter to check motor insulation. Insulation 
resistance must be approximately 15 megaohms. If 
resistance is low, disassemble pump motor and bake 
windings to dry them.

Defective motor and pump 
bearings?

Check for excessive bearing wear, if worn replace 
bearings. Replace motor if defective.

Pump Fails to Deliver Full 
Output

Twisted or restricted dis-
charge hose?

Lay hose flat un-kinked. Remove clog from hose line.

Clogged impeller?

Clean impeller.

Low voltage?

Use a voltmeter to check voltage while pump is 
energized. Voltage must be within ±10%. Check 
power source (no load and load). If an extension cord 
is used, make sure it has adequate current-carrying 
capacity for the required length.See Table 4.

Impeller worn?

Replace impeller.

Water in Mechanical  
Seal Oil

Defective mechanical seal?

Replace mechanical seal.

Loose Oil Fill Plug?

Tighten securely. Apply teflon tape.