11.4 Installing the dosing valve in the correct position
Personnel:
n
Mechanic
n
Service personnel
n
Specialist
Protective equipment:
n
Chemical-resistant protective gloves
n
Protective eyewear
WARNING!
During installation it is essential to ensure that the valves are installed
according to the direction of flow!
The direction of flow is marked by an impressed arrow on the suction/
pressure valves.
NOTICE!
It is essential that the tightening torques given below are observed, firstly to
ensure the leak-tightness of the system and secondly to ensure the integrity
of the thread.
The tightening torques of the metering head screws are given on an
adhesive label that is af
fixed to the pump head.
Tightening torque of the suction/pressure valves:
Pump head size 5 l/h and 11 l/h 5 l/h and 11 l/h 5 l/h and 11 l/h
Tightening torque 2 ± 0.2 Nm 2,8 ± 0.2 Nm 4 ± 0.2 Nm
11.5 Changing the valve cartridges (V3 type)
NOTICE!
When changing ‘
V3 Valve cartridges’ make sure they are installed in the
correct position.
1 Lower valve cartridge V3
S Suction side -> suction valve
Servicing
162417102276 Rev. 5-02.2020
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