Type of
maintenance
Purpose
Inspection interval
Periodical
inspection
The inspection prevents operational interruptions
and machine breakdowns. The measures to
increase performance and pump efficiency are
decided for each application. They can include
such things as impeller trimming, wear part
control and replacement, control of zinc-anodes
and control of the stator.
Up to 12,000 hours or three years,
whichever comes first.
Applies to normal applications and
operating conditions at media
(liquid) temperatures <40°C
(104°F).
Overhaul
The overhaul lengthens the operating lifetime of
the product. It includes the replacement of key
components and the measures that are taken
during an inspection.
Up to 24,000 hours or six years,
whichever comes first.
Applies to normal applications and
operating conditions at media
(liquid) temperatures <40°C
(104°F).
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).
6.11.1 Inspection
Service item
Action
Cable
1. If the outer jacket is damaged, then replace the cable.
2. Check that the cables do not have any sharp bends and are
not pinched.
Connection to power
Check that the connections are properly secured.
Electrical cabinets
Check that they are clean and dry.
Propeller
1. Check the propeller clearance.
2. Replace the propeller, if necessary.
Inspection chamber
1. Drain all liquid, if any.
2. Check the resistance of the leakage sensor.
Normal value approximately 1200 ohms, alarm approximately
430 ohms
If the pump is connected to the MAS monitoring system, then it is
recommended that the sensors be checked in the MAS unit.
Otherwise, use a multimeter.
For values, see
on page 18.
Insulation
Use a megger maximum 1000 V.
1. Check that the resistance between the ground (earth) and
phase lead is more than 5 megohms.
2. Conduct a phase-to-phase resistance check.
6 Maintenance
P7030, P7035, P7040 Installation, Operation, and Maintenance Manual
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