SET/DM3AL
D26052AE-2
Operation and Installation Manual
All rights reserved.
Copyright © 2019, Labkotec Oy
4(5)
5. OPERATION TEST
Always check the correct operation of the alarm
after the installation and after making the connec-
tions. You should also check the operation every
time the separator is emptied or at least once a
year.
Testing
the ope-
ration
1. Immerse the sensor entirely in
water. The device should be in
normal mode (see chapter 4).
2. Lift the sensor in the air or im-
merse it
in oil. The “Oil chamber
full” alarm should be issued (see
Chapter 4).
3. Put the sensor back into water.
The alarm should stop after a
while. Clean the sensor before
installing it into the separator.
If the sensor does not function as described, check
the device settings from the control unit manual or
contact the representative of the manufacturer
6. SERVICE AND REPAIR
The sensor must be cleaned and tested when
emptying the storage chamber and in connection
with the annual maintenance. A mild detergent
(e.g. washing-up liquid) and a scrubbing brush can
be used for cleaning the sensor, if necessary.
During maintenance procedures (such
as servicing the oil/fuel separator sys-
tems), the sensor should not be lifted out of
the separator tank or installed back until
there is water in the tank.
The instructions concerning the
inspection and maintenance of Ex
equipment contained in the standards IEC/EN
60079-17 and IEC/EN 60079-19 should be ob-
served when executing service, inspection, or
repair procedures
In fault situation check the cabling and connections
of possible short-circuits or interruptions, then, if
necessary, measure the sensor current and com-
pare it with current values below.
Attention! If the sensor is located in an explosive
atmosphere, the multimeter must be Exi-approved!
Sensor in the water:
3
– 4 mA
Sensor in the air:
9
– 11 mA
Sensor in the oil or grease:
9
– 11 mA
Also measure the output voltage of control unit. It
is typically between 10-
12 V with Labkotec Oy’s
SET-control units. See details from the manual of
the control unit.
In case of queries,
please contact Labkotec Oy’s
service.
7. SET/DM3AL
– and SET/DM3DL –SENSORS
SET/DM3AL
–sensor is designed to use with ana-
logical SET-control units, such as e.g. SET-1000,
OilSET-1000, SET-2000, SET-2000 Hi Level/Oil.
SET/DM3DL -sensor is primarily designed to use
with control units that communicate digitally, such
as e.g. LevelSET S.
Visually the difference of SET/DM3AL- and
SET/DM3DL
–sensors is that SET/DM3AL sensor
body is black and SET/DM3DL sensor body is
grey.
This operation and installation manual applies only
to SET/DM3AL-sensor.
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