Inspection; Oil Change 18 Fm - Grundfos SEG Instrucciones De Instalación Y Operación

10.1 Inspection

Pumps running normal operation should be checked
every 3000 operating hours or at least once a year.
If the dry solids content of the pumped liquid is very
high or sandy, check the pump at shorter intervals.
Check the following points:
• Power consumption
See section
4.1 Nameplate.
• Oil level and oil condition
When the pump is new or after replacement of
the shaft seal, check the oil level after one week
of operation.
Use Shell Ondina X420 oil or similar type.
See sections
10.2 Oil
Used oil must be disposed of in
Note
accordance with local regulations.
• Cable entry
Make sure that the cable entry is watertight and
that the cables are not sharply bent and/or
pinched.
See section
10.5 Service
A possible replacement of the cable must
Note
be carried out by Grundfos or a service
workshop authorised by Grundfos.
• Pump parts
Check the impeller, pump housing, etc. for
possible wear. Replace defective parts.
See section
10.5 Service
• Ball bearings
Check the shaft for noisy or heavy operation (turn
the shaft by hand). Replace defective ball
bearings.
A general overhaul of the pump is usually
required in case of defective ball bearings or poor
motor function. This work must be carried out by
Grundfos or a service workshop authorised by
Grundfos.
• Grinder system/parts
In case of frequent choke-ups, check the grinder
system for wear. When worn, the edges of the
grinding parts are round and worn. Compare with
a new grinder system.
18
change.
kits.
kits.
10.2 Oil change
Every 3000 operating hours or at least once a year,
change the oil in the oil chamber as described below.
If the shaft seal has been changed, the oil must be
changed as well.
Warning
When loosening the screws of the oil
chamber, note that pressure may have
built up in the chamber. Do not remove the
screws until the pressure has been fully
relieved.
Motor oil quantities
The table below states the quantity of oil in the oil
chamber of SEG pumps:
Pump type
0.9 to 1.5 kW
2.2 to 4.0 kW
Draining the motor oil
1. Remove both oil screws to allow all the oil to
drain from the chamber.
2. Check the oil for water and impurities. If the shaft
seal has been removed, the oil will give a good
indication of the condition of the shaft seal.
Used oil must be disposed of in
Note
accordance with local regulations.
Oil filling, pump lying down
1. See fig. 12. Place the pump in such a position
that it is lying on the stator housing and the
discharge flange and that the oil screws are
pointing upwards.
2. Fill oil into the oil chamber through the upper hole
until it starts running out of the lower hole. The oil
level is now correct. See section
the shaft seal.
3. Fit both oil screws using the packing material
included in the kit. See section
Oil filling
Oil level
Fig. 12 Oil filling holes
Quantity of oil in oil
chamber [l]
0.17
0.42
10.3 Checking
10.5 Service kits.