OMS-1 Oil Separator Alarm Device
D15530_E-5
Installation and Operating Instructions
Copyright © 2019 Labkotec Oy
8/13
We reserve the right for changes without notice
4
TROUBLE-SHOOTING
Problem: MAINS LED indicator is off
Possible reason: D
evice doesn’t get supply voltage.
To do: 1. Check that power separation switch is not switched off.
2. Measure the voltage between poles N and L1. It should be 230 VAC ±
10 %.
Problem: No alarm when sensor in oil or air, or the alarm will not go off
Possible reason: Sensor is dirty.
To do: 1. Clean-up the sensor and check the operation again.
Problem: FAULT LED indicator is on
Possible reason: Resistance in sensor circuit too high (cable break or out of connector) or
too low (cable in short circuit). The sensor might also be broken.
To do: 1. Make sure, that the sensor cable has been connected correctly to the
OMS-1 control unit.
2.
Disconnect sensor’s [+] wire and measure resistance between [+] and
[-] wires. The measured resistance should be 45-51 k
Ω.
3. If it is possible measure
also resistance between [+] wire and sensor’s
upper electrode. The measured resistance should be 1,1
– 1,3 kΩ.
4. If the resistance values in items 2 and 3 are correct, then OMS-1
control unit is defective, otherwise problem is in cabling or in sensor.
If the problem can not be solved with the above instructions, please
contact Labkotec
Oy’s service.
Attention! If the sensor is located in an explosive atmosphere, the
multimeter must be Exi-approved!
