Danfoss APP W HC Series, Operation Manual

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Instruction | Recommended service intervals for APP W HC 15 - 30 pumps
50 180R9410 | AQ282628894589en-000801 | IOM APP W HC 15-30 Pumps | 01.2022
Pos. Qty. Description Material Service interval
1 1 Housing, main bearing Duplex, PEEK No need for service
11, 125, 1 Mounting flange/
end flange
Wetted part: Duplex
Dry part: AISI 316L
No wear part
121 1 Port flange Duplex No wear part
31 1 Swash plate Super Duplex 32,000 hours
66 5/7/9 Piston Super Duplex and PEEK Recommended inspection
on a yearly basis and
evaluated acc . to app . 1
Replace after 24,000 hours
92 1 Valve plate Super Duplex 24,000 hours
91 1 Port plate Super Duplex, PEEK 24,000 hours
61 1 Cylinder barrel Super Duplex 32,000 hours
65 1 Retainer plate Super Duplex 32,000 hours
64 1 Retainer ball Super Duplex 32,000 hours
71 1 Retainer guide Super Duplex 32,000 hours
62 1/4 Spring Duplex 40,000 hours
63 1 Spring guide Duplex or PP 40,000 hours
142 1 Stop for shaft seal PP No wear part
124 1 Shaft seal Hastelloy and NBR 24,000 hours
125 1 Cover/flange for shaft seal Super Duplex No wear part
93 5/7/9 Back-up ring PTFE 24,000 hours
* O-ring (overall) NBR 24,000 hours
* Screw (overall) AISI 316 24,000 hours
* Pin (overall) AISI 316, Duplex or PEEK No wear part
152 1 Valve cone (flushing valve) Duplex or PEEK 48,000 hours
3 2 Bleeding screw Duplex No wear part
67 1 Key AISI 316 40,000 hours
1. General information This guideline provides information on the
recommended service intervals . The recommen-
dation is based upon good engineering practice
and on experience gained from operation even
under extreme conditions .
The recommendation is for guidance only .
2. Design/features Danfoss APP W HC pumps* are designed for long
operation and low maintenance and life cycle
costs .
Provided that the pump has been running
according to the Danfoss specifications, Danfoss
guarantees one year service-free operation,
however, max . 18 months from date of
production . After one year of operation it is
recommended to inspect the pump and replace
worn parts, if any .
If the Danfoss recommendations concerning
system-design (see our data sheet) are not
followed, the service life of the pumps might be
affected .
The recommended service intervals on the differ-
ent parts in the pumps appear from the table
below:
1 . General information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .50
2 . Design/features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .50
3 . Appendix 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .51
Table of Contents
* depends on pump size