Dräger PEX 3000 Manual Del Usuario página 41

– Remove the old ex-sensor from the housing and replace with a new ex-
sensor. Shorten the sensor cables on the new sensor to 55 mm, strip
approx. 6 mm and apply the isolated ferrules provided (Zoller+Fröhlich,
type: V3AE0003 or equivalent). This ensures that the degree of protection
IP 30 is preserved if the housing is opened for maintenance purposes.
– Screw the new sensor into the hexagon nut (via the housing opening) and
fasten with thread-locking fluid (e.g. Loctite no. 221). To preserve the IP
degree of protection, ensure the flawless fit of the sensor sealing ring.
– Connect the ex-sensor's cables (brown, yellow, black) to the corresponding
br/br, ge/yw and sw/bk terminal. Use a screwdriver (width of 3 mm) or
special tool to open the spring terminals (see "Handling the spring terminal
clamps in the transmitter", page 36).
– Refit the upper part of the casing, ensuring that the atmosphere is free of
dust and fasten the cover screws.
– Turn the transmitter on again and/or re-insert the controller's channel card
into the rack.
– Observe the warm-up time of the new ex-sensor:
DrägerSensor PR M DQ, at least 30 minutes
DrägerSensor LC M, at least 120 minutes
After replacing the ex-sensor, the transmitter must be calibrated (see
"Calibrating the transmitter", page 37).
8 Disposal
This product must not be disposed of as household waste. This is indi-
cated by the adjacent symbol.
You can return this product to Dräger free of charge. For information
please contact the national marketing organizations or Dräger.
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Disposal
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