HALE AP, Technical Manual

Page: 58 / 177

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Table 14. Engine Speed SCR Table – CONTINUED
SYMPTOM CAUSE REMEDY
Engine Speeds Too High –
CONTINUED
Worn Pump Impeller(s)
And/or Clearance Rings
Installation of new parts required.
Impeller Blockage Blockage in the impeller can prevent loss of
both capacity and pressure. Back flushing the
pump from discharge to suction may free
blockage. Removal of the pump head may be
required (this is considered a major repair).
5.1.5 Relief Valve Problems
Table 15. Relief Valve SCR Table
SYMPTOM CAUSE REMEDY
Relief Valve Does Not Re-
lieve Pressure When Valves
Are Closed
Incorrect Setting Of Control
Valve (PMD)
Check and repeat proper procedures for set-
ting relief valve system.
(See www.Haleproducts.com and search for
your relief valve for setup instructions.)
Relief Valve Inoperative Refer to the relief valve manual.
Relief Valve Does Not Re-
cover And Return To Origi-
nal Pressure Setting After
Opening Valves
Dirt In System Causing
Sticky Or Slow Reaction
Refer to the relief valve manual.
Relief Valve Blocked Clean the valve with a small wire or straight-
en of a paper clip. Refer to the relief valve
manual.
5.1.6 Gearbox Problems
Table 16. Gearbox SCR Table
SYMPTOM CAUSE REMEDY
Water In Pump Gearbox Leak Coming From Above
Pump
Check all piping connections and tank over-
flow for possible spillage falling directly on to
the pump gearbox.
Leaking Mechanical Seal If mechanical seal is installed, there should
be no leaks. Inspect the oil seal and replace
if necessary.
5.1.7 Discharge Valve Problems
Table 17. Discharge Valve(s) SCR Table
SYMPTOM CAUSE REMEDY
Discharge Valves Difficult
To Operate
Lack Of Lubrication Recommended weekly lubrication of dis-
charge and suction valve, use an approved
lubricant. Refer to the valve manual for more
information.