Danfoss APP series User Manual page 50

Instruction
Recommended service
intervals for APP pumps
(180R9199)
Table of Contents
1. General information
2. Design/features
32
Recommended service intervals for APP pumps
1. General information
2. Design/features
3. Appendix 1
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.
Danfoss APP pumps are designed for long
operation and low maintenance and life cycle
costs.
Danfoss guarantees 8,000 hours service free
operation, however max. 18 months from date of
production. After 8,000 operation hours it is
recommended to inspect the pump and replace
worn parts, if any.
Nr. Qty. Description
1 1 Housing, main bearing
11, 125, 1 Mounting flange/
211* end flange
121, 181* 1 Port flange
31 1 Swash plate
66 5/7/9 Piston
92 1 Valve plated
91 1 Port plate
61 1 Cylinder barrel
65 1 Retaining plate
64 1 Retaining ball
71 1 Retaining guide
62 1/4 Spring
63 1 Spring guiede
142 1 Stop for shaft seal
124, 215* 1 Shaft seal
125 1 Cover/flange for
shaft seal
93 5/7/9 Back-up ring
* O-ring (overall)
* Screw (overall)
* Pin (overall)
152 1 Valve cone (flushing valve)
3, 129* 2 Bleeding screw
67 1 Parallel key
* depends on pump size
180R9265 / IOM APP 16-22 Appendices - v02 / 01.2013
The recommendation is for guidance only.
If the Danfoss recommendations concerning
system-design (see our data sheet) are not
followed, the service life of the APP pumps might
be affected.
The recommended service intervals on the
different parts in the APP pumps appear from the
table below:
Material Service interval
Duplex, PEEK No need for service
Wetted part: Duplex No wear part
Dry part: AISI 316L
Duplex No wear part
Super Duplex 40,000 hours
Super Duplex and PEEK Recommended inspection
on a yearly basis and
evaluated acc. to app. 1
Super Duplex 24,000 hours
Super Duplex, PEEK 24,000 hours
Super Duplex 40,000 hours
Super Duplex 24,000 hours
Super Duplex 40,000 hours
Super Duplex 40,000 hours
Duplex 40,000 hours
Duplex or PP 40,000 hours
PP No wear part
Hasteloy and NBR It is good practice to
change the seal after each
disassembly of the pump
Super Duplex No wear part
Teflon 24,000 hours
NBR 24,000 hours
AISI 316 No wear part
AISI 316, Duplex or PEEK No wear part
Duplex or PEEK 40,000 hours
Duplex No wear part
AISI 302 40,000 hours