MP Pumps HYDRASUB 20_25 INSTRUCTION - Manual (Page 4)

TROUBLESHOOTING
If problems develop, use the chart below to service the pump.
4
FORM 3069A (05-04)
Pump will not start
Poor pump performance
No hydraulic flow and pressure
Hydraulic motor
Couplers
Hydraulic connection
Hydraulic oil flow is low
Pump is too deep in sediment
Pump intake is plugged
Discharge hose is twisted or kinked
Discharge hose is too small
Lift is too high for power supply
Pump not sufficient for application
Damaged or worn impeller
Turn power on. Check to make sure
the oil flow range (5-9gpm /
8-14gpm), and 2000psi oil pressure are
ok.
Repair or replace as needed.
Check to make sure the couplers are
completely connected and not defective.
If defective, replace.
Connected backwards. Reinstall in
proper direction.
Turn power on. Check to make sure
the oil flow range (5-9gpm /
8-14gpm), and 2000psi oil pressure are
ok.
Place pump on solid support.
Make sure debris has not wrapped
around base of pump.
Make sure the hose is straight.
Make sure hoses are 2” dia. Model 20,
and 2-1.2” dia. Model 25.
Maximum lift is 70ft Model20, and 95 ft.
Model 25.
Make sure pump specs are sufficient for
application.
Replace as required.