Checking the diaphragm rupture sensor
1.
When changing the diaphragm, unscrew the diaphragm rup‐
ture sensor from the dosing head.
2.
Check that the monitor does not indicate a diaphragm rup‐
ture:
3.
Using a blunt insulating probe (Ø 2 ... 3 mm, no sharp
edges), press into the channel of the diaphragm rupture
sensor.
ð
The monitor device should indicate a diaphragm rupture.
4.
Release the pin again.
ð
The monitor device should no longer indicate a dia‐
phragm rupture.
5.
Repeat the test several times.
6.
If everything is working correctly, screw the diaphragm rup‐
ture sensor into the dosing head with a new seal (1).
7.
If not, go to the next section.
Replace the separating diaphragm of the diaphragm rupture
sensor
1.
Disconnect the diaphragm rupture sensor from the monitor.
2.
When changing the diaphragm, unscrew the diaphragm rup‐
ture sensor from the dosing head.
3.
Grasp the top part (2) of the diaphragm rupture sensor.
Do not tamper with 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 any dirty parts.
7.
Lay the new separating diaphragm (3) with the light side
(PTFE) down into the top part (2).
8.
Place the disc (4) in the top part (2).
9.
Place the spring into the body (5).
10. Move the body (5) close to the top part (2).
ð
The spring (6) should sit correctly on the spring seat (3a).
11. Screw the body (5) into the top part and tighten.
12. Connect the diaphragm rupture sensor back to the monitor.
13. Check the diaphragm rupture sensor as described under
“Checking diaphragm rupture sensor".
14. If the diaphragm rupture sensor does not operate clearly and
reliably, then definitively use a new diaphragm rupture
sensor.
ATEX version
1
2
3
3a
4
5
6
P_HY_0015_SW
Fig. 21
Repairs
63
