Danfoss APP 1.5 User Manual

9
180R9267 / IOM APP 1.5-3.5 Appendices - v04 / 11.2013
Data sheet APP pumps - APP 1.5-3.5
6
521B0850 / DKCFN.PD.013.FA6.02 / 09.2012
8. Noise level
7.2 Storage
Frost protection is required at temperatures
below 2°C. Danfoss recommends to use DOW-
FROST from DOW Chemical Company or Chilsafe
mono propylene glycol from Arco Chemical
Company.
The table indicates the approximate noise level
in dB(A) measured at a distance of 1 m from the
pump in a reverberation room.
Type 60 bar (870 psi) 1500 rpm 60 bar (870 psi) 3000 rpm
APP 1.5 75 76
APP 1.8 75 76
APP 2.2 75 76
APP 2.5 76 77
APP 3.0 72 77
APP 3.5 72 77
Generally, noise will be reduced if speed is
reduced and vice versa. Use exible hoses in
order to minimize vibrations and noise.
Since the pump is typically mounted on a bell
housing or frame, the noise level must be
determined for the complete unit (system).
It is therefore very important that the motor/
pump unit is mounted correctly on a frame with
antivibration isolation to minimize vibrations and
noise.
The noise level is inuenced by:
• The speed of the pump, high rpm create
more noise than low rpm
• Rigid mounting of the pump generates
more noise than exible mounting
• Pipe mounting direct to the pump
increases the noise level compared to a
exible hose
9. Filtration As water has very low viscosity, the APP pumps
have been designed with very narrow clearance
in order to control internal leakage rates and
improve component performance. Therefore it is
important that the inlet water is ltered properly
to minimize the wear of the pump.
The main lter must have a ltration eciency of
99.98% at 10 μm. We recommend to use precision
depth lter cartridges rated 10μm abs. ß10>5000
(equivalent to a ltration eciency of 99.98%).
Bag lters and string wound lter cartridges
typically have only 50% ltration eciency. This
means that for each 100,000 particles reaching
the lter, 50,000 particles pass through it
compared to only 20 particles in a lter with an
eciency of 99.98%.
For more information on the importance of
proper ltration, please consult our publication
“Filtration” (code number 521B1009), which also
will provide you with an explanation of ltration
denitions and a guidance on how to select the
right lter.
Storage temperature:
-40°C to +70°C (+40°F to 158°F) provided that
the pump is drained of uid and stored
”plugged”.
Data sheet APP pumps - APP 1.5-3.5
7
521B0850 / DKCFN.PD.013.FA6.02 / 09.2012
10. Dimensions 10.1 Pump
Description APP 1.5 - APP 3.5
A Port position mm 21.0
in 0.83
B Port position mm 21.0
in 0.83
C mm Ø 105
in 4.1
D mm 166
in 6.5
E Parallel key, DIN 6885 mm 5 × 5 × 20
in 0.20 × 0.20 × 0.78
F Bleeding M6, Hexagon AF = 5 mm
I Inlet connection BSP G¾”; 15 (0.59) deep
O Outlet connection BSP G¾”; 17 (0.67) deep
Pump mounting ange SAE A 2

Danfoss APP 1.5 Specifications

General

Brand	Danfoss
Model	APP 1.5
Category	Water Pump
Language	English