Maintenance
Valve maintenance
28
© Lutz-Jesco GmbH 2017
BA-20710-02-V05
Chlorine control valve
C 7700
Operating instructions
Adjusting the zero point
Fig. 19: Zero point adjustment
5.
Move the electrical regulation valve to the closed position.
6.
Loosen the counternut on the upper guide bolt.
7.
Turn the adjusting spindle on the ball knob until the flow meter
indicates zero throughflow.
8.
Turn the ball knob ¼ rotation clockwise and then tighten the
counternut on the upper guide bolt.
9.
Repeat the zero point adjustment check at least once.
ü
Zero point adjusted.
13.4.5 Finishing maintenance
Perform the following working steps:
1.
Perform a leakage test (see section 11.1 „Vacuum system leak test“
on page 24).
2.
Make a note of the date and scope of the maintenance performed.
3.
Attach a sticker displaying the maintenance date to the device.
4.
Close the device.
5.
Restore all hydraulic connections.
6.
Touch up damaged paint.
7.
To restart the system, proceed in accordance with the instructions in
section 11 „Start-up“ on page 24.
ü
Maintenance completed.
