Pentair HYPRO 1532C-6SP - Running the Engine; Maintenance; Pump Lubrication; Troubleshooting Guide

10
RUNNING THE ENGINE
Refer to engine operation section of this manual for start-
ing and operating instructions.
Pump performance varies depending on engine RPM.
Refer to engine operation to adjust engine speed.
MAINTENANCE
PUMP LUBRICATION
Pump liquid end does not require any grease or oil for
lubrication. The mechanical seal is lubricated by water
when the pump is operating.
CAUSE CORRECTIVE ACTION
1. ENGINE
A. Speed too low. Refer to engine section.
B. Rotating and/or reciprocating parts drag. Refer to engine section.
C. Speed too high. Maximum engine speed not to exceed engine manufacturer’s recommendation.
D. Loose or broken parts. Refer to engine section.
2. PUMP
E. Not primed. Re-prime, inspect suction system for air leaks, and/or check assembly.
F. Pump takes too long to prime. Check for air leaks or defective check valve.
G. Flow through pump completely Locate and remove obstruction. Attach strainer.
or partially blocked.
H. Internal leakage. Check clearances between face of vanes and case. Should not exceed 1/32”.
I. Rotating parts drag. Inspect. Repair.
J. Loose or broken parts. Inspect. Repair.
3. SYSTEM
K. Pressure required by system at design Compare pump pressure and flow rate against pump performance chart.
flow rate exceeds pressure rating of pump. Reduce system pressure requirement. Increase pressure capability of pump.
L. Obstruction in suction piping. Locate and remove obstruction. Attach strainer.
M. Suction lift too high. Check with gauge or measure vertical distance between water surface and
center line of pump, allowing for friction loss in suction pipe. Reduce rate of
flow to obtain desired lift. Refer to pump performance chart.
N. Discharge head too low. Decrease rate of flow.
O. Suction inlet not immersed deep enough. Refer to “Installation” on page 2.
P. Leaky suction line or connection admitting air. Repair or replace suction line. Tighten connections.
Troubleshooting Guide
Service Instructions
SYMPTOM
PROBABLE CAUSE
ENGINE PUMP SYSTEM
A B C D E F G H I J K L M N O P
No water delivered X X X X X X X
Not enough water delivered X X X X X X X
Not enough pressure X X X X X X
Engine heats excessively X X X X X X X
Abnormal noise and/or vibration X X X X X X X
Pump works for a while, then stops X X X X X X