Kobold DOG Series, Руководство по эксплуатации

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DOG
page 22 DOG K11/0422
13. Maintenance
13.1 Replacing the sensor
To replace the hot wire sensor, turn off the flow of medium and discharge the
pressure in the lines. For versions with ball
valves, it is sufficient to simply shut these.
Demounting (see diagram) is carried out in
the following order:
1) Open the connection box (4 x screws)
2) Unclamp the hot wire sensor from the strip
terminal (2 screws)
3) If necessary (due to lack of space or tight
cable arrangement), also unclamp from the
strip terminal, loosen the cable gland and pull
out the cable
4) Loosen the connection box from the plate
(2 x screws)
5)
Slowly release the hot wire sensor screws
and carefully pull out the hot wire sensor.
Take care that no hot wire sensor parts
remain in the device and also that no foreign
parts fall into the device (2 screws).
Reassembly is in the reverse order. Replac the O-rings with the new ones supplied
with the hot wire sensor. Uniformly tighten the screws crosswise.
13.2 Disassembly and cleaning the sensor
In the event that the internal section of
the oscillator is dirtied by the medium or
foreign particles fall into this during
replacement of the sensor, the device
must be demounted and cleaned (see
figure at left).
Before the device can be demounted, the
connection box and the hot wire sensor
must be unscrewed. For this, see point
13.1.
Then unscrew the screws in the upper
plate, separate the parts and clean the
flow channel of the oscillator on both
sides.
2)

Order of disassembly
2x

Number of screws
NM

Requires tightening torque
1) 4x – 1.2-1.5 Nm
2) 4x – 0.3 – 0.5 Nm
5) 4x – 1 – 1.2 Nm
4) 2x – 3 – 4 Nm
3) 1x – 4 – 5 Nm