Start-up
Checking the vacuum system
22
© Lutz-Jesco GmbH 2016
BA-20901-02-V01
Chlorinator C 2526
Operating instructions
9 Start-up
9.1 Checking the vacuum system
Note
Operating faults through leakages in the vacuum system
Small leaks in the vacuum system will not be recognised in normal
operation, since no chlorine escapes. Air will enter the system with
moisture. The moisture can combine with the chlorine to create
deposits and operating malfunctions.
With the injector switched off, there may be a slight chlorine smell.
ð
Check the vacuum system.
ð
Ensure that all action is taken only by personnel with sufficient and
corresponding qualifications.
The leak-tightness of the vacuum system is inspected together with the
vacuum regulator.
Precondition for action:
ü
The vacuum system is fully assembled.
ü
All the open connections of the vacuum system were closed.
ü
The injector is ready for operation.
Perform the following working steps:
1.
Interrupt the chlorine supply. To do so, either connect the tank valve
of a valve in the supply line to the vacuum regulator.
2.
Open the manual dosing valve on the dosing device.
3.
Lock the valve spindle of the electrical control valve in the open
position.
4.
Switch on the injector and wait until the vacuum pressure gauge
displays at least -0.5 bar.
5.
Switch off the injector.
4
The vacuum must stay unchanged for at least five minutes.
6.
If the vacuum collapses quickly, eliminate the leak and repeat the
check on the vacuum system.
ü
Vacuum system checked
Note
Damage of the gauge
The search for leaks in the vacuum system often uses compressed air
or nitrogen with a slight positive pressure as the leak point can then
be recognised using a soapy solution. This test damages the contact
gauge.
ð
Dismantle the contact gauge before checking the vacuum system
with positive pressure.
9.2 Turning on the device
Precondition for action:
ü
The device is fully assembled.
ü
The leak test was performed.
Perform the following working steps:
1.
Switch the electrical regulation valve to manual operation (see
section 8.2 on page 21)
2.
Switch the injector on.
3.
Open the chlorine supply.
4.
Set the dosing quantity on the manual dosing valve. Observe the
application process to prevent overdosing. Adapt the dosing quantity
is necessary.
è
With automatically controlled systems, now adjust the measurement
amplifier and controller. Then switch the electrical regulation valve to
automatic operation (see section 8.3 on page 21)
ü
Device switched on.
9.3 Adapting the power output
If the dosing capacity of the device is considerably higher than required,
the maximum dosing capacity can be reduced for automatic operation.
Depending on the optional fitting of the dosing device, this reduction can
be performed on the signal converter or the electrical regulation valve.
See the separate instructions for this device.
The maximum dosing capacity in manual operation is not altered by the
settings.
Note
Poor control from the PID controller
Many operating companies restrict the output of their automatic
dosing device on the manual dosing valve. This is easy, but interferes
with the functioning of the PID controller for the application process.
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Use the functions of the electrical valve or the signal converter to
adapt the power.
Summary of Contents for C 2526
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