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Maintenance
PREVENTIVE MAINTENANCE SCHEDULE
Service task
Check cable / replace cable when jacket is damaged
Check cable seal
Check pipes, hoses, valves
Check float switch / Level sensor function
Check for external damage, loose parts
Oil check *
Oil change after 6 months or when contaminated with water
Check wear parts / adjust impeller and diffusor if necessary
Change wear parts
Replace seals
Replace ball bearings
Check contactor function
Stator measurement **
Measure thermal switches of stator
*) in continuous operation check every 3 months. At intermittent duty check oil every 6 months.
**) check related country standard and regulation.
EXTERNAL DAMAGE, LOOSE PARTS
Make sure that all screws, bolts and nuts are tight.
Check the condition of the pump lifting handle and
replace if damaged or worn. Replace any external part
that appears worn or damaged.
MOTOR INSULATION RESISTANCE
Use a 500 V DC Megger and measure the insulation
between the phases and between any phase and
ground. Resistance values should be over 1 M ohm. If
abnormal readings are obtained, immediately hand
the pump in for repair.
Every month
Every 3 months
x
x
x
x
x
Also observe any local requirement regulations. The
stricter one will prevail.
IMPELLER
Inspect the impeller by removing the strainer and dif-
fusor. Replace the impeller if it is damaged or severe-
ly worn.
POWER CABLE
Inspect the cable for cuts, scrapes or sharp bends. If
the outer jacket is damaged, replace the cable. Do not
make splices within wet wells.
13
Every 6 months
Every 12 months in use
x
x
x
x
x
x
x
x
CABLE ENTRY
Make sure that the cable entry flange and strain relief
clamp are tight. If the cable entry is showing signs of
leakage replace the cable seal and position on the ca-
ble.
When worn
x
x
x
x
x
x
x
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