ProMinent gamma G/4b Operating Instructions Manual page 81

Metering pump
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Version 2.0
Troubleshooting/Eliminating Errors
• Now pull the liquid end with the screws out of the diaphragm and
completely unscrew this from the drive axle.
• Remove the intermediate disk (20) from the enclosure (15).
20a
19
17c
• Screw on a new diaphragm (20a) to the stop of the drive axle (15a)
and check the threads are smooth.
• Unscrew the diaphragm again from the drive axle.
• Replace the intermediate disk onto the enclosure again.
• Insert the diaphragm into the intermediate disk and screw on 2
thread turns.
ATTENTION:
Turn the diaphragm in such a way that the 4 bores of the
diaphragm and intermediate disk match precisely!
The drain opening of the intermediate disk must point
downwards!
• Place the liquid end (suction connection must point downwards!)
with screws onto the diaphragm and intermediate disk so far that the
parts can still be turned (again leave approx. 5 mm distance
between the liquid end and the intermediate disk!).
• Now turn the parts clockwise so long until the diaphragm is sitting
tightly (the twist resistance of the recuperating spring can be felt).
ATTENTION:
Do not overturn the diaphragm, especially as regards types
1000 und 1601!
15
20
15a
G/4b-051-D
Page 79 of 88 pages

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