Danfoss APP 11-13 Gebrauchsanweisung - Seite 7

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Danfoss APP 11-13 Gebrauchsanweisung
Instruction
3.
When should the
pistons be replaced?
Changing pistons APP 11-13 and APP 16-22
This section provides guides on how to deter-
mine whether the pistons of APP 11-13 and 16-22
are worn and should be replaced.
Note: If the pistons break down, the pump will
suffer a disastrous breakdown.
1.
No wear or cavitation of the piston shoe.
New inspection is required within
4,000 hours.
3.
Cavitation of the piston shoes.
All pistons must be replaced within
the next 1,000 hours.
180R9227 / 521B1194 / DKCFN.PI.013.O1.02 / 03.2012
In case of doubt – the pistons must be replaced.
If any worn pistons are found, all pistons must be
replaced.
The pictures below are meant as guideline for
evaluating the wear of the sliding surface.
2.
Cavitation of the piston shoes.
New inspection is required within
2,000 hours.
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