Labkotec SET-2000 Oil/Sludge Installation And Operating Instructions Manual page 7

SET-2000 Oil / Sludge (110 VAC)
Installation and Operating Instructions
Fault alarm
Reset of an alarm
Normal situation
Sludge or Oil alarm on
Fault alarm on
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The operational delay of SET/S2 (30...40 sec) prevents false alarms from
occurring when garbage or other obstacles, which weaken the
measurement signal momentarily, pass across the sensors heads.
Note! When testing SET/S2 sensor operation in a separate vessel, the
water put into the vessel should stand for about 30 minutes before testing.
This prevents false alarms caused by the attachment of air bubbles on the
sensor heads.
After removal of Sludge alarm (the two heads of the sensor are in water),
the Alarm LED indicator will be off and relay 2 will be energized and
buzzer will be off after a delay of 30...40 sec.
A broken sensor, sensor cable break or short circuit, i.e. too low or too
high sensor signal current.
Mains LED indicator is on.
Sensor circuit Fault LED indicator is on after 5 sec delay.
The relay of the respective channel de-energizes after 5 sec delay.
Buzzer is on after 5 sec delay.
When pressing the Reset push button.
Buzzer will go off.
Relays will not change their status before the actual alarm or fault is off.
TEST FUNCTION
Test function provides an artificial alarm, which can be used to test the
function of the SET-2000 Oil/Sludge and the function of other equipment,
which is connected to SET-2000 via its relays.
Attention ! Before pressing Test button, make sure that the change of
relay status does not cause hazards elsewhere !
When pressing the Test push button:
Alarm and Fault LED indicators are immediately on.
Buzzer is immediately on.
Relays de-energize after 2 sec of continuous pressing.
When the Test push button is released:
LED indicators and buzzer go immediately off.
Relays energize immediately.
When pressing the Test push button:
Fault LED indicators are immediately on.
The Alarm LED indicator of the alarming channel remains on and the
respective relay remains de-energised.
Alarm LED indicator of the other channel is on and the relay de-
energizes.
Buzzer remains on. If it has been reset earlier, it will return to be on.
When the Test push button is released:
The device returns without delay to the preceding status.
When pressing Test push button:
The device does not react with regards to the faulty channel.
The device reacts as described above with regards to the functional
channel.
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D15645AE-2