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Type of service
Periodical inspection
Major overhaul
NOTICE:
Shorter intervals may be required when the operating conditions are extreme, for example
with very abrasive or corrosive applications or when the liquid temperatures exceed 40°C
(104°F).
6.2.1 Inspection
CAUTION: Compressed Gas Hazard
Air inside may cause parts or liquid to be propelled with force. Be careful when opening.
Regular inspection and service of the pump makes sure that the operation is more reliable.
Do the following to service the pump:
P7900 Installation, Operation, and Maintenance Manual
Purpose
To prevent operational
interruptions and machine
breakdown. Measures to
secure performance and
efficiency are defined and
decided for each individual
application. It can include
such things as impeller
trimming, wear part control
and replacement, control of
zinc-anodes and control of
the stator.
To secure a long operating
lifetime for the product. It
includes the replacement of
key components and the
measures that are taken
during an inspection.
Part to service
Action
Pump exterior
Check the entire pump and the cables for external mechanical damage.
Cable
1. If the outer jacket is damaged, replace the cable.
2. Check that the cables do not have any sharp bends and are not pinched.
3. Check that the leads and cable entry screws are correctly connected and
tightened to the correct torque.
Lifting handle
Check the lifting handle for corrosion or other damage.
Junction box
1. General:
Check that it is clean and dry.
If it is wet:
a. Check the cable entry.
b. Replace the O-rings. Fit new O-rings to all O-ring seal joints which are
2. Terminal board: Check that the connections are properly secured.
Junction box
Check the condition and function. See
or generators
insulation: Drive units
up to 1.1 kV
Interval
12,000 hours or 3 years, whichever comes
first. Applies to normal applications and
operating conditions at media (liquid)
temperatures < 40°C (104°F).
24,000 hours or 6 years, whichever comes
first. Applies to normal applications and
operating conditions at media (liquid)
temperatures < 40°C (104°F).
opened during inspection.
on page 51.
6 Maintenance
Check the insulation, up to 1 kV drives
49
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