CAUTION
Operation outside the permissible bearing temperature
Damage to the pump!
▷ The bearing temperature of the pump (set) must never exceed 90 °C (measured
on the outside of the motor housing).
7.2.2 Inspection work
7.2.2.1 Checking the coupling
Check the flexible elements of the coupling. Replace these parts in due time if there
is any sign of wear.
7.2.2.2 Cleaning filters
CAUTION
Insufficient inlet pressure due to clogged filter in the suction line
Damage to the pump!
▷ Monitor contamination of filter with suitable means (e.g. differential pressure
gauge).
▷ Clean filter in appropriate intervals.
7.2.2.3 Checking the bearing seals
DANGER
Excessive temperatures caused by mechanical contact
Risk of explosion!
Damage to the pump set!
▷ Check correct seating of axial sealing rings mounted on the shaft.
Only gentle contact shall be established between the sealing lip and the shaft.
7.2.3 Lubrication and lubricant change of rolling element bearings
DANGER
Excessive temperatures as a result of bearings running hot or defective bearing seals
Explosion hazard!
Fire hazard!
Damage to the pump set!
▷ Regularly check the condition of the lubricant.
7.2.3.1 Oil lubrication
The rolling element bearings are lubricated with mineral oil.
7.2.3.1.1 Intervals
Table 18: Oil change intervals
Oil change Interval
Bearing bracket up to
P04ax
Bearing bracket up to
P05ax
Initial oil change After 300 operating hours After 300 operating hours
Further oil changes After 6000 operating
hours
13)
After 8000 operating
hours
13)
7 Servicing/Maintenance
48 of 78
KWP
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