Lutz Jesco C 2700-V, Operating Instructions Manual

Page: 26 / 40

Maintenance
Maintaining the vacuum part
26
Vacuum Regulator for Chlorine Gas C 2700-V
© Lutz-Jesco GmbH 2016
Operating Instructions
BA-21210-02-V05
10.5.3 Installing the vacuum part
Precondition for action:

The parts are completely dry following cleaning.

The parts are in good condition.

Wearing parts are available.
Perform the following working steps:
1. Rub a little silicone grease onto the edges of the diaphragm (
3.5
).
2. Put the diaphragm (
3.5
) with the curvature facing downward onto
the diaphragm disc (
3.7
) and then attach the clamping ring (
3.4
).
3. Firstly only put the screws (
3.3
) and some fitting grease loosely into
place.
4. Check that the diaphragm (
3.5
) is in the correct position by pulling
gently on it.
5. Tighten the screws (
3.3
) crosswise applying a torque of approx. 1
Nm.
6. Install the rubber tube piece (
3.6
) on the PVC tap on the membrane
disc (
3.7
). Do not use sharp tools for this.
7. Install the guide sleeve (
3.2
). Screw in the screws (
3.1
) using a
little fitting grease (tightening torque approx. 1 Nm).

Diaphragm disc installed.
8. Place the diaphragm disc (
3
) with the metal insert facing down-
wards in the lower housing (
2
) and ensure the diaphragm (
3.5
) fits
properly.
9. Attach the upper housing (
1
). Applying slight pressure turn the
housing parts against each other to ensure that the diaphragm (
3.5
)
is well seated.
10. Screw in the screws (
4
–
6
) with a little fitting grease. Tighten the
screws crosswise to a torque of approx. 2 Nm.
11. Screw in the screw connection (
8
) with the O-ring (
7
) by hand.
12. Fit the O-ring (
10
) to the output and tighten the union nut (
11
) by
hand.

Vacuum part installed.
10.5.4 Testing the vacuum part
Testing for leaks
Precondition for action:

The vacuum part is installed.

The inlet valve has been successfully tested, thoroughly dried and
installed on the vacuum regulator.

The injector is ready for operation.
Fig. 10-4: Test for leaks
Perform the following working steps:
1. Close the input of the vacuum regulator
2. Connect the injector to the output of the vacuum regulator.
3. Switch on the injector.
4. After approx. ½ minute attach a tube to the safety valve connection.
5. Immerse the open end in water.

The water must not rise in the tube.

Leak test concluded
Testing the functioning of the safety valve
Precondition for action:

The leak test is concluded.

Compressed air or nitrogen with a suitable pressure reducing valve
is available.
Fig. 10-5: Testing the safety valve
0 – 1 bar