A flow detector with minimum contact can be connected to an
input. The flow detector sends a signal to the control to switch off
the system when the flow of raw water becomes too low.
The system must also be locked by the water treatment system cir‐
culating pump via the pause input on the control (12).
The system starts up automatically with the pre-set "Ozone volume
control variable" if:
n
The pause signal is inactive. The contact at the pause input of
the system is closed,
n
There is no other fault.
4.3.2 Door safety switch
DANGER!
Potentially fatal high voltage
– If the door safety switch (13) is bypassed, parts
of the system can become live with potentially
fatal high voltage. Even if the door safety
switch is unlocked or the master switch (19) is
switched off, parts of the system's electrical
system can still carry mains voltage.
– Bypassing the door safety switch is prohibited.
– Disconnect the system from the mains/power
supply before accessing the system cabinet
and ensure that it cannot be reconnected, e.g.
by fitting a padlock to the master switch.
– Only open the system cabinet 5 minutes after
the system has been disconnected from the
mains/power supply.
The system is provided with a door safety switch (22) to ensure
that no live parts can be touched.
4.3.3 Emergency Stop switch in the plant room for the ozone generation system (acces‐
sory)
Install the Emergency Stop switch in an easily accessible, invulner‐
able position in the vicinity of the door of the plant room of the
ozone generation system. The Emergency Stop switch must
appropriately disconnect the electrical supply equipment connected
to the system from the mains/power supply.
4.3.4 Ozone gas detector (accessory)
INFORMATION! It is imperative that you read the operating
instructions for your gas detector.
Install the gas detector at positions where the highest concentra‐
tions of ozone are likely in the event of a fault/malfunction. With
positive pressure systems, install the gas detector in the vicinity of
the ozone generation system. The OZLa is a positive pressure
system.
The gas detector requires a potential-free alarm contact with the
OZLa. The alarm contact is appropriately connected to the input of
the control (12) as per the enclosed terminal wiring diagram
(Appendix).
Components of the system and their function
19
Summary of Contents for OZLa 06 O
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