Lubrication and Maintenance
Page 12
Maintenance Program Chart
Trouble Shooting
Pump does not prime
• No liquid in tank or not covering suction inlet.
• Suction filter blocked.
• Suction filter stop valve closed.
• Suction filter bowl loose or missing O-ring.
• Suction line loose allowing pump to suck air
• Control lever not in by-pass position.
• Pump valve springs broken or valves worn.
Pump does not reach correct pressure
• Pump not operating at full 540 rpm.
• Suction filter blocked.
• Suction filter stop valve partly closed
• Pressure regulator not correctly adjusted
• Pressure regulator valve and seats worn.
• Pressure gauge faulty
• Pump diaphragms ruptured (pump oil grey or
milky).
• Worn nozzles or capacity of nozzles
greater than capacity of the pump.
• Worn pump inlet / outlet valves
Pump and hoses vibrating.
• Pump surge chamber pressure incorrectly
adjusted or surge diaphragm ruptured.
• Air entering the suction line through loose
or damaged fittings.
• Pump valves or valve springs worn or
damaged.
• Worn nozzles or capacity of nozzles
greater than capacity of the pump.
• Air trapped in filter or suction lines.
Water in Oil
• Broken diaphragms
OPERATION
Every
8 hours
Every
50
hours
Every
300
hours
End of
Season
CHECK LEVEL OIL
X
CHECK PRESSURE ACCUMULATOR
X
CHECK SUCTION FITTINGS
X
CHECK AND CLEAN SUCTION FILTER
X
CHECK PUMP MOUNTING
X
CHECK DIAPHRAGM
O
CHANGE OIL
O(1) O(2)
CHECK INLET/OUTLET VALVES
O
CHECK TIGHTENING OF PUMP BOLTS
O
Note: X operation to be carried out by the operator
O operation to be carried out by specialised technician
(1) Every 300 hours or annually, whichever occurs first.
(2) To be carried out same at same time as diaphragm change
MAINTENANCE INTERVALS
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