Tightening Torques - Grundfos AP80-100 Sicherheitshinweise

• Check the fill level in the sealing chamber.
• Check possible damage on the axial face seal.
Monthly:
• Monitor the power input and voltage.
• Check the used switchgears for
resistance and sealed space control.
Every six months:
• Inspect the power supply cable.
• Inspect the cable holder and wiring.
• Inspect the accessories, such as the suspension
device and hoisting gears.
After 3000 operating hours:
• Perform visual check of the pump and inspect
the wear ring.
• Check the oil level and condition. Change the oil.
Change the shaft seal in case of water ingress or
oil leakage.
• Check the hydraulic components and wear
ring for wear. Replace if necessary.
After 8 000 operating hours or two years:
• Check the insulation resistance
• Empty the leakage chamber. Not available for
all models. For more information, contact
Grundfos.
• Inspect all safety and control devices.
• Check the coating and touch-up as required.
After 15 000 operating hours or five years:
• General overhaul.
If the pump is used in highly abrasive or
corrosive matter, the maintenance
intervals should be reduced.

Tightening torques

A2/A4,
Hardness
class 70
DIN912 / DIN933
M6 7 Nm
M8 17 Nm
M10 33 Nm
M12 57 Nm
M16 140 Nm
M20 273 Nm
Oil check and change
When the pump is new or the shaft seal is replaced,
check the oil level and water content after one week
of operation. If there is more than 20 % extra liquid
(water) in the oil chamber, the shaft seal is defective.
The table below states the quantity of oil in the oil
chamber:
Pump type
AP80
A2/A4,
AP100
Hardness
class 80
11.8 Nm
28.7 Nm
58 Nm
100 Nm
Draining of oil
245 Nm
1.
494 Nm
2.
3.
Only use original parts.
Use Shell Ondina X420 oil or equivalent
type.
Dispose of used oil must comply with local
regulations
CAUTION
Pressurised system
Minor or moderate personal injury
‐
The oil chamber may be under
pressure. Loosen the screws carefully
and do not remove them until the
pressure has been completely relieved.
After 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
replaced, the oil must be changed.
Quantity of oil in the
oil chamber [l]
0.6
1.9
CAUTION
Pressurised system
Minor or moderate personal injury
‐
The oil chamber may be under
pressure. Loosen the screws carefully
and do not remove them until the
pressure has been completely relieved.
Place the pump on a level surface with one oil
screw pointing downwards.
Place a 2.5 litre capacity transparent container
under the oil screw.
Remove the lower oil screw.
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