Maintenance
Valve maintenance
26
© Lutz-Jesco GmbH 2017
BA-20710-02-V05
Chlorine control valve
C 7700
Operating instructions
13 Maintenance
Products by Lutz-Jesco are manufactured to the highest quality
standards and have a long service life. However, some parts are subject
to operational wear. This means that regular visual inspections are
necessary to ensure a long operating life. Regular maintenance will
protect the device from operation interruptions.
DANGER
Mortal danger from electric shock!
Live parts can inflict fatal injuries.
ð
Before carrying out any maintenance work, always disconnect the
device from the power supply.
ð
Secure the power supply against accidental activation.
DANGER
Danger to life from chlorine poisoning!
Do not carry out maintenance or any other work on the chlorinator
until the system has been decommissioned and all of the chlorine gas
has been removed from the lines. The failure to follow this instruction
presents a significant risk of injury.
ð
Prior to any maintenance work, prepare the system in accordance
with section 13.3 „Preparing the system for maintenance“ on
page 26.
13.1 Maintenance intervals
Subject the chlorinator to regular maintenance, to prevent malfunctions.
Perform the maintenance in the following intervals:
Interval
Maintenance
Annually
n
Cleaning the device
n
Replace all seals
n
Functional control
n
Checking for leaks
Table 25: Maintenance intervals
i
In some cases, regional regulations may require shorter
maintenance intervals. Carry out maintenance before
recommissioning the system after a long period out of service.
Maintenance intervals not depend only on how frequently the
equipment is used. Chemical wear, for example of rubber
parts, begins with the initial medium contact and continues
irrespective of the usage.
13.2 Maintenance accessories
Description
Silicone grease, medium viscosity 35 g
for application to seals
Face spanner for screw cap
Plastic tools
for dismantling O-rings
Table 26: Maintenance accessories
i
The spare parts for maintenance are provided by
Lutz-Jesco GmbH as a maintenance set. See section 15.3
„Maintenance sets“ on page 32.
13.3 Preparing the system for maintenance
Perform the following working steps:
1.
Close the valves of the chlorine tank.
2.
Use the injector to suck off the remaining chlorine.
3.
Run the chlorinator for approximately five minutes with nitrogen or
dry compressed air.
4.
Close the service valve between the dosing device and the injector.
5.
Switch off the injector.
ü
The system is prepared for maintenance.
13.4 Valve maintenance
The seals of the electrical regulation valve must be replaced and the
device cleaned each time it receives maintenance.
i
Section 15 „Spare parts“ on page 30 gives you an overview
of all electrical regulation valve components.
Precondition for action:
ü
The system is prepared in accordance with section 13.3.
ü
The fitting maintenance set is available.
13.4.1 Dismantling the valve
Perform the following working steps:
1.
Unplug the hydraulic connections from the device and close the lines
to prevent the penetration of air humidity.
2.
Remove the large screw cap from the side of the eccentric chamber.
If necessary, use a face spanner.
3.
Remove the cap on the upper part of the valve.
4.
Lock the adjusting spindle on the manual operation position.
