Relay Module - Dräger Polytron 7000 Instructions For Use Manual

Relay module

Intended use
Relay module – to order:
— For switching of actuators, alarm generators, etc. on the basis of the measured
gas concentration.
— The unit must be disconnected from the mains!
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. The explosion-protection markings has to be removed from the
transmitter.
The use of the Polytron 7000 with a pump module and/or relay module
installed is not permitted in explosion-hazard areas! Explosion hazard!
Note:
For operation with the relay module, the transmitter must have a 3-wire con-
nection to the control unit.
Preparing the docking station
Remove any existing explosion-protection label from the docking station.
1 Release the measuring unit with an Allen key by turning the eccentric catches
⇒
counter-clockwise (
Caution! Use only a 5 mm Allen key without a ball head.
2 Slide the measuring unit halfway upwards and then pull it forward out of the dock-
ing station.
Converting the measuring unit
3 Bend the snap-hooks on the cover of the measuring unit slightly outwards to re-
lease them.
Remove the cover.
4 Plug the connection cable into the male connector behind the display, ensuring
that the cable is not twisted.
Place the relay module on the measuring unit and snap it into position on both
sides.
In order to make this step easier, the relay cover may be removed.
5 Attention:
Take care that pressure is applied only to the sleeve of measuring unit.
Pressure on the inner structure can damage the unit.
o
= approx. 180 ).
Installing accessories
2
1
Polytron
3
OK
5
4
3
31