Value Explanation
Measurement evalu-
ation
0 mA
Cable break /
Sensor fault
Change the WIO sen-
sor.
3.8 mA
No oil in oil
chamber
Do the test when the
oil chamber is empty.
4-10 mA
Normal opera-
tion
Do the test when the
oil chamber is full.
>10 mA
Water in oil, pos-
sible leak
Check the seals, pos-
sible water leak.
Related information
8.3 Oil check and change
8.4 Inspection and adjustment of the impeller
clearance
8.3 Oil check and change
The oil chamber is filled with oil acting as a lubricant
and a coolant for both mechanical seals.
Check the oil in the oil chamber every
3000 operating hours or at least once a
year, or if the shaft seal is changed.
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.
Lack of oil may cause overheating and
damage to the mechanical shaft seals.
The WIO sensor in the oil chamber trips
the alarm if the oil quality or quantity is in-
adequate, or there is no oil in the oil cham-
ber.
Oil auto-ignition temperature must be
above 250 °C. Use any of the following:
• Elf Performance Polytraffic 10W-40
• Total Rubia Polytraffic 10W-40
• Pennzoil SAE 10W-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
The oil in the oil chamber can be changed while the
pump is in either horizontal or vertical position.
However; it is recommended to carry out the oil
change while the pump is in a horizontal position.
This way, it is easier to drain all the used oil out of the
chamber.
Horizontal position
Proceed as follows:
1. Place the pump in a position that inspection screw
A is pointing upwards.
TM031628
Pump with inspection screw A upwards
CAUTION
Pressurised system
Minor or moderate personal injury
‐ The oil chamber may be under
pressure. Loosen the screws care-
fully and do not remove them until
the pressure has been fully re-
lieved.
2. Loosen and remove screw A.
3. Remove screw B and check the oil level.
4. Inspect the oil coming out of the motor. If the
colour is greyish white, the oil may contain water.
If the oil contains water, the shaft seal is defective
and must be replaced. 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.
Used oil must be disposed of in ac-
cordance with local regulations.
34
English (GB)
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