Multiquip LS600P ユーザーズマニュアル

Pump Engine will idle but 

not increase to full operating 

speed

Throttle Control Block Solenoid

not engergizing

Check for burned out solenoid and computer 

ground activation voltage.

Battery voltage falls below 

12VDC on digital display, 

causing engine not to start

Blown out Fuse

Check the fuse

Dead battery

Check the charge on the battery

Wiring connection inside Control Box Check the wiring connections and verify power 

is reaching ignition switch

Main Hydraulic Pump Noisy

Insuffi cient oil

Check oil level and for closed suction strainer

Air in system

Check for aeration reservoir
Vacuum leak in suction line

Excessive pump wear

Repair or replace

Excessive engine speed

Check for correct engine RPM

Engine bogs down

Low engine speed

Check engine RPM

Main relief cartridge set to low

Adjust relief cartridge

Engine overloaded when pumping

Decrease volume control on main pump
Material hose pack

Machine does not deliver 

volume and pressure

Low engine speed

Check engine RPM

Volume control set to low

Adjust control to full open setting

Main hydraulic pressure too low

Check for proper pressure or for contaminated 

relief cartridge

Hydraulic fl uid gets hot

Cooling fan

Check fan electrical connection or for burnt fan 

motor.
Fan rotating in wrong direction

Contaminated cooler fi ns

Clean cooler fi ns

Return fi lter element closed

Replace fi lter

Main relief cartridge contaminated or 

set too low

Replace or set to proper pressure

Hydraulic oil level too low

Fill to proper level

Accumulator gauge reads 

below 1750 PSI

Accumulator bottle low on notrogen

Check precharge pressure 1100 PSI

Contaminated safety relief cartridge

Replace cartridge

Defective unloader cartridge electrical 

coil

Replace

Unloader cartridge coil not energizing Check for 12 Volt signal voltage
Defective gear pump

Replace pump

Cylinders not completely 

extended (short stroke)

Excessive amount of hydraulic on 

cylinder rod side

Inspect cylinder. Check values for 

contamination or faulty spring

Hydraulic cylinder piston head seal 

leaking

Replace seals