40
180R9270 / IOM APP S 674 - v01 / 03.2013
Instruction
APP S 674 pumps
4
180R9276 / 521B1245 / DKCFN.PI.013.Z1.02 / 03.2013
3.
Building up
the pump unit
3.1 Mounting
D
A: Flexible coupling
B: Bell housing
C: Motor shaft
D: Pump flange
1.
Mount the coupling on the pump shaft.
Ensure an air gap between coupling and
pump flange of min. 4 mm (0.16 in).
2.
Mount the bell housing on the pump. Secure
nuts with the right torque.
3.
Measure the longest distance “A” from top of
bell housing to the button of coupling claw.
4.
Mount the coupling on the motor shaft.
Ensure the coupling and motor flange are not
in contact with each other.
2.3 Protection of too high pressures
The pump should be protected against too high
pressure by using a safety valve or a pressure
relief valve.
The valve should be placed as close to the pump
as possible.
The opening characteristics of the valve must not
result in peak pressures higher than 80 bar
(1,160 psi).
The valve outlet must not be connected
directly to the pump suction line. It must be
connected directly to the drain.
PS