11.6 Replacement of diaphragm and pump head
Personnel:
n
Mechanic
n
Service personnel
n
Specialist
Protective equipment:
n
Chemical-resistant protective gloves
n
Protective eyewear
n
Safety shoes
CAUTION!
Diaphragm:
–
Before changing the diaphragm, it is essential to change the pump to
servicing mode.
Ä
Chapter 11.1 ‘Maintenance mode - Service position
of the pump - [Pump service]’ on page 157
– Only tighten
diaphragms by hand and do not use a tool!
The service life of the diaphragm depends on the following:
– back pressure
– operating temperature
– and metering medium
W
e recommend that you check the diaphragm more frequently in extreme
operating conditions and if metering abrasive substances.
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 metering head screws:
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 3,75 ± 0.25 Nm 6 ± 0.25 Nm 6 ± 0.25 Nm
Servicing
163 417102276 Rev. 5-02.2020
To Next Page
Loading...
Need help?
General
