50 | 180R9346 | AQ240486503020en-001702 © Danfoss | 2023.03
Operation guide Installation, Operation and Maintenance APP 53-92 pumps
6. Adjust respectively, verify the measure-
ment, and secure both couplings with the
right torques on the locking screws (see
coupling operation & mounting instruction).
7. Mount the elastic gear ring and mount the
bell housing/pump on the motor. After
mounting it must be possible to move the
elastic gear ring 3-5 mm (0.12 - 0.2 inch)
axial “C”. The check can be done through
the inspection hole of bell housing. Secure
ange bolts with the right torque.
If alternative mounting is desired, please contact
Danfoss High Pressure Pumps.
Choose proper tolerances to ensure an easy
mounting of the elastic coupling without use of
tools.
Please take care to observe the recommended
length tolerances of the chosen coupling, as an
axial force on the pump will damage the pump.
C
75 Nm ± 5 Nm
1: Bolts 100 Nm ± 10
2: Nuts 100 Nm ± 10
3: Torque se table below
Thread
size
M5 M6 M8 M10
Torque
[Nm]
2 4.8 10 17
2
1
3
4.2 Connections
To prevent stray current corrosion we recom-
mend grounding of the pump and all other parts
in the system.
All parts in the system must be electrical
potential equalized to a single reference point
(grounding point).
It is recommended that the electrical resistance
in the grounding cable is equal to or below 0.25
Ohm towards the grounding point.
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