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LRR 1-60 - Installation & Operating Manual -
819692-00
Bringing into service – start, operation and alarm
The MIN relay is configured for automatic intermittent blowdown on the URB 60.
Startup
During startup, all the relays of the LRR 1-60 3-point stepping conductivity controller are de-energised
and the LED lights up orange.
Normal operation
During normal operation, when the supply voltage is on and the measured conductivity is within the MIN
and MAX switchpoints, the MAX relay of the controller is energised. The MIN relay, which is configured
for automatic intermittent blowdown, is de-energised in the normal state and only energised during an
intermittent blowdown pulse. The LED lights up green.
Alarm
If the conductivity value is above the set MAX limit, the MAX relay of the controller is de-energised and
signals a MAX alarm. The LED lights up green.
Behaviour in the event of a malfunction
In the event of a malfunction, the LED lights up red and the MIN/MAX relays become de-energised. The
OPEN/CLOSED relays behave as described in the tables on page 27.
Faulty equipment jeopardises system safety.
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If the LRR 1-60 conductivity controller does not behave as described on this page, it may be
faulty.
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Perform failure analysis.
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Only replace faulty equipment with identical equipment from GESTRA AG.
