Type of service
Purpose
Interval
Major overhaul
To secure a long operating
lifetime for the product. It
includes replacement of key
components and the
measures taken during an
inspection.
24,000 hours or 6 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).
Inspection
CAUTION:
The inside may be pressurized. Be careful when opening the inspection covers.
Regular inspection and service of the pump ensures more reliable operation.
Do the following to service the pump:
Part to service
Action
Pump casing
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. (New O-rings should be fitted to all O-ring seal
joints opened during inspection.)
2. Terminal board: Check that the connections are properly tightened.
Junction box
insulation, drive units
up to 1.1 kV
Check the condition and function. See
Check the junction box insulation, up to 1.1
(page 84).
Junction box
insulation, drive units
1.2 - 6.6 kV
Check the condition and function. See
Check the junction box insulation, 1.2-6.6
(page 84).
Stator housing
1. Check that it is clean and dry:
• If there is oil in the stator housing, drain and clean. After one week of
operation, check again. If there is still oil in the stator housing, change
the seals.
• If there is water in the stator housing and there was water in the oil,
change the seals immediately.
• If there is water in the stator housing, but there was no water in the oil,
check all other connections.
2. Replace the O-rings.
Maintenance
82
C3300/6x5, C/R3231, C3240, C3306, C3312, C3351, C3356, C3400, C3501, C3531, C3602, C3800 Installation,
Operation and Maintenance Manual
