Hale Q Series Muscle - Manual (Page 99)

99 MUSCLE (Midship) Pumps Installation, Operation, and Maintenance Manual
p/n: 029-0020-63-0
Troubleshooting 
Cavitation
(Pump beginning
to cavitate.)
Note: Also see
“Cavitation” on
page 193.
Discharging more
water than the pump is
taking in • Increase the flow into the pump with more and/or larger intake
lines.
• Gate the discharge valves to reduce flow and maintain pressure.
Air leak • Verify that the air bleeder on the suction tube is NOT open.
• Locate and eliminate all air leaks during maintenance.
Drafting too high • Verify lift hose, hose friction, water temperature and other lift limit-
ing factors are reduced or eliminated.
• Locate the pump closer to the water source.
Water temperature too
high • Reduce volume discharge by lowering the RPM or gating the dis-
charge valves.
• Locate a source of cooler water.
Relief Valve Does
Not Relieve Pres-
sure When Relief
Valves are
Closed. Incorrect setting of
control (PM/PMD)
Valve. • Check and repeat proper procedures for setting relief valve sys-
tem.
• See Section 3 Operation, heading “Relief Valve Procedures” on
page 66.
• See Section 3 Operation, heading “TPM Relief Valve Procedures”
on page 66.
Relief valve
inoperative. • Possibly in need of lubrication. Remove valve from pump, disman-
tle, clean and lubricate.
• Refer to relief valve manual and follow maintenance instructions
for disassembly, cleaning and lubrication.
Relief Valve Does
Not Recover and
Return to Original
Pressure Setting
After Opening
Valves. Dirt in system causing
sticky or slow reaction. • Check and repeat proper procedures for setting the relief valve
system.
• See Section 3 Operation, heading “Relief Valve Procedures” on
page 66.
Relief valve
inoperative. • Blocked bleed orifice - clean the bleed orifice with a small wire or
straightened paper clip.
• Refer to relief valve manual and follow maintenance instructions
for disassembly, cleaning and lubrication.
Relief Valve
Opens When
Control Valves are
Locked Out. Drain hole in housing,
piston or sensing
valve is blocked. • Clean the valve drain hole with a small wire or straightened paper
clip.
• Refer to relief / sensing valve manual and follow maintenance
instructions for disassembly, cleaning and lubrication.
Table 6-1: Muscle (Midship) Pump Troubleshooting (Sheet 7 of 9)
Condition Possible Cause Suggested Corrective Action