Danfoss APP 46 Installation, Operation And Maintenance Manual page 29

Operating guide
8. Temperature and
corrosion
9. Installation
© Danfoss | 2023.03
Installation, Operation and Maintenance APP 21-46 pumps
8.1 Temperature
Fluid temperature:
Min. +2°C to max. +50°C
(Min. +35.6°F to max. +122°F)
Ambient temperature:
Min. +2°C to max. +50°C
(Min. +35.6°F to max. +122°F)
80 º
C
70
60
50
316L
40
30
20
1000
100
160 1600
See example below on how to mount the pump
and connect it to an electric motor or combus-
tion engine (special coupling).
A: Pump
B: Bell housing
C: Flexible coupling
D: Motor shaft
E: Motor
A
C
In case of lower operating temperatures, please
contact Danfoss High Pressure Pumps.operation
stop in order to minimize the risk of crevice
corrosion.
The chart below illustrates the corrosive resist-
ance of di erent types of stainless steel related to
NaCl concentration and temperature.
The APP water pump is made of Duplex and
Super Duplex.
If the water pump is operated above the Duplex
line, always ush water pump with fresh water at
operation stop in order to minimize the risk of
crevice corrosion.
Duplex
Super Duplex
10 000
16000
If alternative mounting is required. please
contact your Danfoss sales representative for
further information.
Note: Do not add any axial or radial loads to the
pump shaft.
B
D E
NaCI vs. temperature
CI -
100 000
ppm
NaCI
160000
ppm
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