Solenoid diaphragm pump
Series R/RS 204.1
Operating Instructions
40
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Subject to technical modifications!
TA 416
Rev.
11 en
04/2013
11.4 Changing working diaphragm
General
In order to ensure a correct function of the diaphragm pump
and to fulfil the required safety and protective provisions it is
absolutely necessary to check and replace the diaphragms at
regular intervals.
CAUTION !
For replacing the diaphragm, the system must be depres-
surised!
CAUTION !
Prior to replacing the diaphragm, empty the pump and, if
necessary, rinse it with appropriate fluid in order to avoid
contact with aggressive and/or toxic media!
Interrupt the power supply during the maintenance / re-
pair of the pump and secure against unintentional or un-
authorized starting.
Take appropriate protective measures: wear protective
clothing, breathing mask and safety goggles. Prepare a
container with appropriate fluid right beside the pump for
being able to remove splashes of the pumped medium.
Use an appropriate detergent to rinse the solenoid dia-
phragm pump until no residues of the pumped medium
remain in the pump body. Otherwise, pumped medium
may leak when disassembling the pump. Collect the
rinsed liquid in a safe way (avoid contact with it) and dis-
pose of it in an environmentally compatible way. This
measure is also necessary if the solenoid diaphragm
pump should be returned for repair.
Replacement of the working diaphragm:
Loosen suction and pressure lines of pump
Make a note of the current setting of the stroke length
Set stroke length to 0 %
Screw out fixing screws of pump body (take off with disks)
Remove pump body (with valves) to the front (see Fig.42)
Fixing screw
Disk
Pump body
Fig. 42 (Disassembly of pump body)
