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Repairs
EX Version
P_HY_0015_SW
Fig. 21
50
11.
If the diaphragm rupture sensor does not operate clearly and reli‐
ably, then a new diaphragm rupture sensor must be used without
fail.
Check diaphragm rupture sensor
1.
When changing the diaphragm, unscrew the diaphragm rupture
1
sensor from the dosing head.
2.
Check that the monitor does not indicate a diaphragm rupture:
2
3.
Using a blunt insulating probe (Ø 2 ... 3 mm, no sharp edges), press
into the channel of the diaphragm rupture sensor.
3
3a
ð The monitor device must indicate a diaphragm rupture.
4.
Release the pin again.
4
ð The monitor device must no longer indicate a diaphragm rup‐
ture.
5
6
5.
Repeat the test several times.
6.
If everything is working correctly, screw the diaphragm rupture
sensor into the dosing head with a new seal (1).
7.
If not, go to the next section.
Replace separating diaphragm of the diaphragm rupture sensor
1.
Disconnect the diaphragm rupture sensor from the monitor device.
2.
When changing the diaphragm, unscrew the diaphragm rupture
sensor from the dosing head.
3.
Grasp the upper section (2) of the diaphragm rupture sensor.
Do not manipulate the lacquer-protected nut.
4.
Hold the body (5) in place with an open-ended spanner.
5.
Unscrew the top of the diaphragm rupture sensor.
6.
Clean the soiled parts.
7.
Lay the new separating diaphragm (3) with the light side (PTFE)
down into the upper section (2).
8.
Place the disc (4) in the upper section (2).
9.
Place the spring inside the body (5).
10.
Move the body (5) close to the upper section (2).
ð The spring (6) must sit correctly on the spring seat (3a).
11.
Screw the body (5) into the upper section and screw tighten.
12.
Connect the diaphragm rupture sensor back to the monitor device.
13.
Check the diaphragm rupture sensor as described in "Check dia‐
phragm rupture sensor".
14.
If the diaphragm rupture sensor does not operate clearly and reli‐
ably, then a new diaphragm rupture sensor must be used without
fail.
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