English (GB)
27
8.3 Oil check and oil change
The oil chamber is filled with oil acting as lubricant and coolant for
both mechanical seals.
Low oil level may indicate that the upper mechanical shaft seal is
defective. Contact an authorised service workshop for further
overhaul of the pump and repair, if required.
The oil in the oil chamber can be changed with the pump in either
horizontal or upright position. We recommend that you carry out
the oil change with the pump in horizontal position, if possible,
because in that way it is much easier to drain all the used oil out
of the chamber.
Horizontal position
Proceed as follows:
1. Place the pump in such a position that inspection screw A is
pointing upwards.
Fig. 32
Pump with inspection screw A upwards
2. Loosen and remove screw A.
3. Remove screw B and check the oil level.
4. Take an oil sample to inspect the condition of the oil. The oil
becomes greyish white like milk if it contains water. In normal
operation a small leakage through the mechanical shaft seals
is expected to happen, but if the water content in the oil is
high, this may be the result of a defective shaft seal.
Change the oil if it contains water. Oil not containing water can
be reused.
5. If the oil needs to be changed, place a clean container under
the pump to collect all the drained-off oil.
6. Remove screw C and allow all the oil to drain from the
chamber into the container. Emulsified oil must be changed
and disposed of.
7. Replace the O-rings, refit screw C and tighten securely. Fill
the oil chamber with oil to the correct level. Refit screws A and
B and tighten securely.
Check the oil once a year to avoid
damage and breakdown of the
pump.
Lack of oil may cause
overheating and damage of the
mechanical shaft seals. The WIO
sensor in the oil chamber will trip
the alarm if the oil quality is poor
or there is no oil in the oil
chamber.
Use oil with viscosity grade SAE
10 W 40.
Range
Oil quantity
Installation type
S [litres]
C, D and H
[litres]
50
2.6
1.9
54
3.5
2.5
58
4.6
3.8
62
9.0
7.1
66
12.5
9.2
70
12.4
9.0
TM
03 16
28 270
5
CAUTION
Pressurised system
Minor or moderate personal injury
- When loosening the screw of
the oil chamber, note that
pressure may have built up in
the chamber. Do not remove
the screw until the pressure
has been fully relieved.
Used oil must be disposed of in
accordance with local
regulations.
