Shutting down/Restarting
GM32 · Technical information · 8011923 · V1.4 · © SICK AG 83
Subject to change without notice
6.2.2 Shutdown
Ensure measuring signals are no longer evaluated.
6.2.2.1 Removing from the sample gas duct
If fitted, remove the weatherproof cover from the SR-unit by unscrewing the two knurled
nuts on the top and lifting the cover from the SR-unit.
Switch the power supply to the SR-unit off. Leave the purge air supply, if present,
switched on for the time being.
Unscrew the locking bushings of the three plug-in connectors on the underside of the
SR-unit and remove the plug-in connectors.
Loosen the cable clamp for the earthing conductor and remove the cable.
If a GPP measuring probe is used, also remove as well the plug of the power supply
cable from the heating control of the measuring probe.
Under consideration of the safety information (
p. 82, §6.2), remove the SR-unit
together with the fitted measuring probe out of the sample gas duct.
To do this, loosen the four screw fastenings (
p. 83, Fig. 19) with two 24 mm wrenches
and pull the measuring probe with fitted SR-unit carefully out of the sample gas duct.
On no account open the quick-release fasteners on the side of the SR-unit housing
when the measuring probe with the SR-unit is still in the sample gas duct.
Fig. 19 Disconnecting the measuring probe with fitted SR-unit from the duct-side “flange with tube“
Lay the SR-unit with the fitted measuring probe on the floor and free from jolts.
Connections on GM32: See GM32 Operating Instructions
For GMP probe: Purge air fixture
For GPP probe: Flange attachment
Seal
“Flange with tube”
Screw
Washer
Spring washer
Nut
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