Commissioning
21
© Lutz-Jesco GmbH 2021
Subject to technical changes.
210527
BA-22404-02-V03
Chlorine changeover unit
C 7520
Operating instructions
PLEASE NOTE
Damage from ammonia solution
If the ammonia solution comes into contact with the plant, this leads to
corrosion on the equipment.
ð
Make sure that you do not spill any ammonia.
ð
Rinse away the ammonia solution with water and dry the system.
NH
3
Fig. 12: Leakage test with ammonia
7.
Open additional downstream valves in the pipe line in sections. In
each case, let a little chlorine gas into the system and close the
valves again. Then carry out the ammonia test at this pipe line sec-
tion and the associated fittings. Proceed in this manner until all pip-
ing and fittings have been tested for leaks.
8.
Repeat the test for the right-hand supply side.
ü
The leak test with chlorine gas has been carried out success-
fully.
Leaks found:
1.
Close the chlorine tank valve.
2.
Extract the chlorine from the piping system using the injector.
3.
Operate the chlorine gas system for approx. 5 minutes with nitrogen
or dry compressed air at approximately 5 bar to remove any residual
chlorine from the pipe lines.
4.
Switch off the injector at the booster pump.
5.
Repair the leak. Allow any adhesive surfaces to harden sufficiently
and repeat the leak test.
9.2 Turning on the device
Precondition for action:
ü
The device is fully assembled.
ü
The leakages tests was performed.
Perform the following working steps:
1.
Switch on the voltage supply.
2.
Ensure that the selection lever on the motor is set to AUTO.
4
The motor moves automatically to the operating position last set.
ü
Device switched on.
9.3 Adjusting the switching contact
The factory settings of the pressure gauge switching point have been set
to approx. 4 bar. It can be changed if required.
Fig. 13: Adjusting the switch point
Perform the following working steps:
1.
Remove the transparent lid (3) from the contact pressure gauge. To
do so, unscrew the outside ring (4) from the device. Observe the seal
(2)
2.
Move the red marking (1) on the desired switch point.
3.
Refit the transparent lid and tighten the ring nut by hand. Ensure the
correct position of the seal.
ü
Switching point of the contact pressure gauge adjusted.
1
2
4
3
