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In the case of simultaneous leakage alarm and level alarm, the red LED is
permanently illuminated and the audible alarm is activated. The number of
flash pulses of the yellow LED identifies the probe (1 to 6) which has trig-
gered the alarm. The flash pulses are repeated at intervals of approximately
three seconds.
Example:
•
Probe 2 triggers an alarm. The yellow LED flashes twice. After approxi-
mately three seconds, the yellow LED flashes twice again. This is
repeated until you have acknowledged the alarm.
7.2
Acknowledging an alarm (OM 5 and OM 5+1 only)
You can mute the audible alarm by pressing the "Acknowledge" key. Press
the key again to switch on the audible alarm again.
Power outage
No alarm is triggered in case of a power outage. When mains voltage is
restored, the product immediately resumes operation. If, during the power
outage, leakage has occurred or the minimum level or the maximum level
have been reached, the product triggers an alarm once power is available
again.
7.3
After an alarm condition
Verifying the photoelectric probe:
After a photoelectric probe has triggered an alarm, this probe must be
checked for pollution.
Verify that there are no remainders of the liquid or deposits between the
transmitter and the receiver of the light barrier.
1. Remove remainders of liquid between the transmitter and the receiver.
2. Carefully clean the probe with a dry, lint-free cloth (see "Maintenance").
3. Replace the probe if deposits or encrustation have formed between the
transmitter and the receiver of the light barrier.
4. Perform a function test.
Operation
OM 5 / OM 5+1 / OM 1
EN
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