Danfoss PAHT 256-308 Інструкція - Сторінка 17

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Instruction

When should the

pistons be replaced

Disassembling and assembling PAHT and PAHT G 256-308

This section provides guidance on, how to

determine whether the parts of the pump are

worn and should be replaced.

In case of doubt - the pistons must be replaced.

The pictures below are meant as a guideline for

evaluating the wear of the sliding surface.

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 in

4,000 hours.

3. Cavitation of the piston shoes.

All pistons must be replaced within the

next 1,000 hours.

180R9268 / 521B1236 / DKCFN.PI.011.B3.02 / 01.2015

2. Cavitation of the piston shoes.

New inspection is required in 2,000 hours.