Danfoss APP 13 Installation, Operation And Maintenance Manual page 53

Operating guide
Instruction
3. Appendix 1
© Danfoss | 2023.03
Installation, Operation and Maintenance APP 11-13
Pistons:
The pistons are the heart of the pump regarding
service.
If the pistons break down, the pump will suffer a
breakdown.
Cavitation of the piston shoes.
New inspection is required in 3,000-4,000 hours.
Cavitation of the piston shoes.
All pistons must be replaced within the next
100-200 hours.
Abrasive wear of the piston shoes.
All pistons must be replaced immediately.
In case of doubt - the pistons must be replaced.
The pictures below is ment as a guideline for
evaluating the wear of the sliding surface.
Cavitation of the piston shoes.
All pistons must be replaced within the next
500-1,000 hours.
Cavitation of the piston shoes.
All pistons must be replaced immediately.
180R9264 | AQ115586503043en-000903 | 53