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KI-OM-6768 R0 Chapter 4
4.2 P
UMP
M
AINTENANCE
4.2.1 Helpful Information
(Refer to the Pump Specific Fault Diagnosis and Maintenance table in section 5.1. Refer to
Appendix I - page 49
for the detailed pump manual)
Interpreting Pressure Readings – Abnormal pressure readings that are out of the specified range
during normal operation may indicate a fault or problem with the pump.
Before servicing the pump it is prudent to carry out checks on the following:
• Inlet plumbing for size
• Restriction and/or air leaks
• Condition of the by-pass valve
• Condition of the pressure gauge
• Shut-off valves in the inlet or discharge plumbing to be sure they are fully open
Pump Service
– JFD advises that the service of the CAT pump on the WHE-3 unit should be carried
out by an approved CAT service agent or JFD regional office.
Ordering of Parts
– When ordering parts, be sure to give the model and serial number of the pump
in addition to the part number, description and quantity of the items required.
Material Returns
– Should it become necessary to return a Cat Pump, please secure approval and
shipping directions from JFD. Items authorised for return must be shipped with freight prepaid. A
full description of the operating conditions, medium being used and full details of the problem with
the pump.
Filter Inspection
– The most common cause of low pump pressure is damage due to foreign matter
carried in the fluid being pumped. Small abrasive particles in the fluid may damage the pump
valves, valve seats, cylinder walls, cups and block the filter screens. It is essential to ensure that the
fluid being pumped is properly filtered to increase the service life of the pump. The in line filter
cartridges of the WHE-03 should be inspected and replaced at regular intervals as required. The
unit should not be run with blocked or damaged filter cartridges or without filter cartridges in the filter
housings as this may cause damage to the pump.
I
MPORTANT
Pressure irregularities are not a definitive diagnosis of pump faults and it is essential to
carry out full fault finding in order to maintain the unit operation.