33
Installing accessories
Pump module
Intended use
Pump module – to order:
— For drawing measuring gas from a remote site into the Dräger Polytron 7000
transmitter.
Preparing the docking station
● Remove any existing approval label/explosion-protection label from the docking
station.
1 Release the measuring unit with an Allen key by turning the eccentric catches
counter-clockwise (
⇒ = approx. 180
o
).
2 Slide the measuring unit halfway upwards and then pull it forward out of the dock-
ing station.
3 Special gush holes are provided on the left and right-hand sides of the sensor re-
cess.
The glass tubes of the pump can be inserted in these holes.
Punch or drill the holes all the way through the docking station from inside. Each
hole should have a 6 mm channel.
Then deburr the holes from the outside.
4 Check, from the bottom side of the docking station, that the holes go all the way
through.
● Check that the docking station has no loose parts, and clean it if necessary.
3 Remove the O-rings from the glass tube and insert them into the grooves on the
bottom of the docking station.
Caution:
If a Polytron 7000 is subsequently equipped with the relay module and/or
the pump module, the complete unit loses its explosion-protection approval.
The user must ensure that no related approval markings are left on the Poly-
tron 7000. Remove or cut away any existing approval label.
The use of the Polytron 7000 with a pump module and/or relay module
installed is not permitted in explosion-hazard areas! Explosion hazard!
Suitable explosion protection measures such as flame traps are required
when drawing measuring gas from potentially explosive atmospheres!
Note:
For operation with the pump module the electrical connection must be done in
3-wire connection.
Caution:
The Polytron 7000 must be disconnected from the supply voltage before the
pump module is installed. Explosion hazard!
Caution! Use only a 5 mm Allen key without a ball head.
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