Hale 80FC - Manual (Page 77)

77 Pump Ends
p/n: 029-0020-61-0
T r ou b les h oo tin g
❑
Discharge Valves
Are Difficult to
Operate -
continued. Valve in need of more
clearance for
operation. • Multi-gasket design allows additional gaskets for more clearance
and free operation.
• Note: Adding too many gaskets to the valve eventually causes
leakage.
Water/Moisture in
Pump Gearbox. Leak coming from
above the pump. • Check all piping connections and tank overflow for possible spill-
age falling directly onto the pump gearbox.
• Repair accordingly.
Operating or a driving
condition that sub-
merges the gearbox in
water. • Visually inspect the unit for external signs of water leakage.
• Was the unit submerged in water? Does your unit include an air
vent / breather where water can enter if submerged? If so, change
oil. Also see Section “Change Gearbox Oil” on page 63.
Normal condensation. • Depending on area / region where unit is operated, normal con-
densation can develop over time.
• Periodic inspection and possibly more frequent oil changes are
needed.
Leaking oil seal or
mechanical seal. • Inspect the oil seals and replace as needed. If the oil seal checks
OK, the mechanical seal may be leaking.
• There must be NO leaks at the mechanical seal. See Section 6a
“Mechanical Seal Assembly” on page 111.
• Hydrostatic test the system to determine leakage.
Rotation Symp-
toms.
(Reduced pres-
sure 60-100 PSI
[4.1-6.9 BAR / 0.4-
0.7 MPa] and
reduced flow.)
Wrong impeller
installed. • Verify the new impeller vanes are oriented the same as the old
impeller before installing. See previous heading “Impeller” on
page 33.
• Refer to relief / sensing valve manual and follow maintenance
instructions for disassembly, cleaning and lubrication.
Wrong application
attempted. • The pump was installed on an application for which it was not
intended, i.e., front mount vs. rear mount.
NOTICE !
IT IS POSSIBLE TO REASSEMBLE THE PUMP INCORRECTLY OR WITH THE
WRONG PARTS. ALWAYS COMPARE THE REPLACEMENT PARTS WITH THE
ORIGINAL HARDWARE. CONTACT CUSTOMER SERVICE AT HALE
PRODUCTS TO ANSWER QUESTIONS OR CONCERNS.
Condition
Possible
Cause
Suggested Corrective Action
Figure 5-2: Troubleshooting Chart