Danfoss APP 5.1 User Manual page 25

Data sheet
6. Inlet pressure
7. Temperature and
corrosion
8. Noise level
APP pumps - APP 5.1-10.2
Water supply to the APP pump is either made
from a tank placed above the pump or directly
from a feed pump. The pressure at the pump
inlet (I) must be in the range: 0.5 - 5 bar
(7.3 - 72.5 psi).
7.1 Operation
Fluid temperature:
+3° C to +50° C (+37.4° F to 122° F) - dependent
on the NaCl concentration
Ambient temperature:
+3° C to +50° C (+37.4° F to 122° F)
80 º
C
70
60
50
316L
40
30
20
1000
100
160 1600
7.2 Storage
Storage temperature:
-40° C to +70° C (+37.4° F to 122° F) – provided
that the APP pump is drained of fluid and
stored "plugged".
The chart indicates the noise level in dB(A)
measured at a distance of 1 m from the APP
pump in a reverberation room.
Type 60 bar (580 psi)
1500 rpm
APP 5.1 74
APP 6.5 74
APP 7.2 74
APP 8.2 74
APP 10.2
74
Generally, noise will be reduced if speed is
reduced and vice versa. Use flexible hoses in
order to minimize vibrations and noise.
Since the APP pump is typically mounted on a
bell housing or frame, the noise level can only be
determined for the complete unit (system).
521B0851 / DKCFN.PD.013.FB3.02 / 10.2012 180R9263 / IOM APP 5.1-10.2 Appendices - v02 / 01.2013
The chart below illustrates the corrosive
resistance of different types of stainless steel
related to NaCl concentration and temperature.
All critical parts of the APP pump are made of
SAF 2507. If the APP pump is operated at high
salinity, always flush the pump with fresh water
at operation stop in order to minimise the risk of
crevice corrosion.
Duplex
Super Duplex
10 000 100 000
16000 160000
Antefreeze protection is required at tempera-
tures below 2° C. Danfoss recommends using
Dowcal N from Dow Chemical Company or
Chillsafe mono propylene glycol from Arco
Chemical Company.
60 bar (580 psi)
1800 rpm
79
79
79
79
79
It is therefore very important that the APP pump
is mounted correctly on a frame with vibration
absorber to minimize vibrations and noise.
NaCI vs. temperature
CI -
ppm
NaCI
ppm
80 bar (2000 psi) 80 bar (2000 psi)
1500 rpm 1800 rpm
73 78
73 78
73 78
73 78
73 78
5 7