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Ascento Group Australia
©
AI.062020
P: 1800 807 604
MOTOR PROTECTION SYSTEM (Autocut Protector)
Some single phase pumps have a built-in motor protection system (Autocut Protector.) If an excessive current is detected or the motor overheats, for
reasons such as the following, the pump will automatically, stop operating regardless of the water level, to protect the motor.
•
Change in supply voltage polarity
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Overload
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Open-phase operation or operation under constraint
NOTE: Always determine the cause of the problem and resolve it before resuming operation. Simply repeating cycles of stopping and restarting will
result in damage to the pump. Do not continue operation at a very low lift, low water leve, or while the strainer stand is clogged with debris. Not only will
performance suffer, but such conditions may cause noise, heavy vibration, and malfunctioning.
MAINTENANCE AND INSPECTION
Regular maintenance and inspections are necessary for continued efficient functioning of the pump. If any abnormal conditions are noticed, refer to the
section on Troubleshooting and take corrective measures immediately.
It is highly recommended that a spare pump be kept ready in case of any problems.
WARNING
PRIOR TO INSPECTION
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Consult WHS supervisor for correct procedures
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Detach the power cable from the receptable or terminals, after making certain the power supply (circuit breaker, etc.) is turned off. Failure to follow
this precaution will result in a serious accident or death from electrical shock or unexpected starting of the pump motor.
1 Washing the pump: Remove accumulated matter from the surface of the pump and wash it clean water. Take special care to remove any debris from the
impeller.
2 When inspecting the pump exterior look for any peeling or chipped paint, and make sure the nuts and bolts are fastened tightly. Any cracks in the surface
should be repaired by cleaning up that area, drying it and then applying touch up coating.
NOTE: Touch up is not supplied. Note that some kinds of damage or looseness may require that the unit be dismantled for repairs. Please consult with your
nearest dealer.
Frequency
Inspection Items
MONTHLY
Measure insulation resistance - Reference resistance 1 - or greater
NOTE: If the insulation resistance has become notably lower than previous inspection, an inspection of the motor will be necessary.
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Meaure operating current - compare with rated current
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Measure supply voltage - Compare with allowable range (5% of rated voltage)
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Pump inspection
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A noticable drop in performance may indicate wear in the impeller, etc. or else clogging of the strainer stand, etc. Remove
clogged debris, and replace any worn parts.
BI-ANNUALLY
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Oil inspection
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Check the oil every six months or after 1,000 hours of use, whichever comes first.
ANNUALLY
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Change oil
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Change oil every 12 months or after 2,000 use, whichever comes first.
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Designated oil: Turbine Oil VG32 - Caltex - or similar
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Change mechanical seal.
NOTE: Trained personnel are required for inspecting and replacing the mechanical seal. Consult with your nearest dealer or
representative.
2-5 YEARS
Overhaul - this should be carried out even if there are no other problems with the pump. The frequency depends on how
contintuously the pump is in use.
NOTE: Consult with your nearest dealer.
STORAGE
When the pump is out of use for an extended period, wash it and dry it thoroughly, then store it
indoors.
NOTE: Always run a test operation before putting the pump back into service.
When the pump is left installed in the water, it should be run at regular intervals (about once a
week.)
OIL INSPECTION & CHANGE
•
Inspecting Oil
Remove the Oil Plug (Hex. Bolt) and tilt the pump to drain a small amount of oil. If the oil is
milk white or has water mixed with it, the Mechanical seal maybe faulty. In this case the pump
will need to be dismantled and repaired.
•
Replacing the Oil
Remove the Oil Plug and drain all the oil, then replace it with the specified amount.
NOTE: Used oil and other waste products should be disposed of by a qualified agent, in
accord with applicable laws. The Oil Plug packing and O-Ring should be replaced each time
the oil is inspected or changed.