Dräger Polytron 5200, Инструкция по эксплуатации

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Maintenance
Dräger Polytron 5200 / Dräger Polytron 53X0 21
4.2.1 Replacing the sensor
To replace the sensor:
1. Turn off power to the instrument or declassify the area ac-
cording to local procedures.
2. Loosen set-screw and unscrew lid from instrument.
3. Remove the bezel, by grasping the notches on either side
of the display with your fingers and pull it up.
4. Unplug the sensor cable.
5. Unscrew the sensor.
6. Insert the sensor wires through the threaded port in the
housing.
7. Screw the sensor into the port.
8. Plug the sensor wires into the socket as indicated.
9. Re-install sensor electronics by pushing the bezel back into
place.
10. Screw the lid back on, until it is seated, and tighten set-
screw.
11. Apply power to the instrument.
12. Calibrate instrument, see Section 4.1 on Page 19.
13. Always test a newly-installed sensor with target gas to
verify proper operation.
4.3 Replacing the main electronics
To replace the main electronics:
1. Turn off power to the instrument or declassify the area ac-
cording to local procedures.
2. Loosen set-screw and unscrew lid from instrument.
3. Remove the bezel, by grasping the notches on either side
of the display with your fingers and pull it up.
4. Unplug the sensor cable, power and relay wires (if applica-
ble).
5. Replace the main electronics.
6. Plug the sensor cable, power and relay wires (if applicable)
into the appropriate sockets.
7. Re-install sensor electronics by pushing the bezel back into
place.
8. Screw the lid back on, until it is seated, and tighten set-
screw.
9. Apply power to the instrument.
10. Review and modify the configuration if necessary.
11. Calibrate instrument, see Section 4.1 on Page 19.
12. Always test a newly-installed sensor with target gas to
verify proper operation.
CAUTION
Five threads must be engaged to ensure explosion-
proof status.
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