52 | 180R9264 | AQ115586503043en-000903
© Danfoss | 2023.03
Operating guide
Installation, Operation and Maintenance APP 11-13
Pos.
Qty.
Description
Material
Service interval
APP 11-22/1200 rpm
Service interval
APP 11-22/1500 rpm
1
1
Housing, main bearing
Duplex, PEEK
No need for service
No need for service
11, 125,
211*
1
Mounting flange/
end flange
Wetted part: Duplex
Dry part: AISI 316L
No wear part
No wear part
121, 181*
1
Port flange
Duplex
No wear part
No wear part
31
1
Swash plate
Super Duplex
48,000 hours
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 hrs.
Recommended inspection on
a yearly basis and evaluated
acc. to app. 1
Replace after 16,000 hrs.
92
1
Valve plate
Super Duplex
32,000 hours
32,000 hours
91
1
Port plate
Super Duplex, PEEK
32,000 hours
32,000 hours
61
1
Cylinder barrel
Super Duplex
48,000 hours
32,000 hours
65
1
Retainer plate
Super Duplex
24,000 hours
24,000
hours
64
1
Retainer ball
Super Duplex
24000 hours
24,000 hours
71
1
Retainer guide
Super Duplex
24,000 hours
24,000 hours
62
1/4
Spring
Duplex
24000
hours
24,000 hours
63
1
Spring guide
Duplex or PP
24,000 hours
24,000 hours
142
1
Stop for shaft seal
PP
No wear part
No wear part
124, 215*
1
Shaft seal
Hastelloy and NBR
32,000 hours
32,000 hours
125
1
Cover/flange for shaft seal
Super Duplex
No wear part
No wear part
93
5/7/9
Back-up ring
PTFE
24,000 hours
24,000 hours
*
O-ring (overall)
NBR
24,000 hours
24,000 hours
*
Screw (overall)
AISI 316
24,000 hours
24,000 hours
*
Pin (overall)
AISI 316, Duplex or PEEK
No wear part
No wear part
152
1
Valve cone (flushing valve)
Duplex or PEEK
48,000
hours
48,000 hours
3, 129*
2
Bleeding screw
Duplex
No wear part
No wear part
67
1
Key
AISI 316
40,000 hours
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 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 APP pumps might
be affected.
The recommended service intervals on the
different parts in the APP pumps appear from the
table below:
1.
General information. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .52
2.
Design/features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .52
3.
Appendix 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .53
Table of Contents
* depends on pump size
Instruction