SICK GM32 Series, Operating Instructions Manual

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62 8012707/ZVF9/V2-1/2019-04 | SICK O P E R A T I N G I N S T R U C T I O N S | GM32
Subject to change without notice
8
SHUTDOWN
8 Shutdown
8.1 Shutdown
8.1.1 Shutdown
▸
Switch off the power supply of the connection unit.
The analyzer can remain on the gas duct as long as the purge air supply (for GMP probe) or
the heater (for GPP probe) is in operation.
8.1.2 Disassembly
1
Disconnect all connections between connection unit and SR-unit.
2
Remove the SR-unit, see “Swiveling out and removing the SR-unit”, page 49 .
3
Unscrew the purge air fixture or flange fixture ( see “GM32 Probe (version shown: GMP
measuring probe)”, page 13 ) from the flange, pull out the probe and lay it down
.
WARNING: Hazard resulting from gases in the gas duct
Hot and/or noxious gases can escape during work on the gas duct, depending on the
plant condition.
▸
Work on the gas duct may only be performed by skilled persons who, based on their
technical training and knowledge as well as knowledge of the relevant regulations,
can assess the tasks given and recognize the hazards involved.
NOTE: Do not switch the purge air off immediately
! ▸
Do not switch the purge air unit off as long as the SR-unit is still on the gas duct.
NOTE: With the GPP probe: Danger of condensation
! ▸
Do not switch off the heater of the GPP probe as long as the probe is in the gas duct.
WARNING: Hazard through overpressure in cavities!
With GPP probes, overpressure can arise in the reflector compartment or in the gas
lines, e.g., through deposits of penetrating liquid, when the probe comes into contact
with the hot sample gas. Open connections carefully, make visual and continuity
checks.
▸
Make regular visual and continuity checks of the cavities.
▸
At the same time, take all precautionary measures described in the Operating
Instructions when opening the connections.
NOTE: In case of a failure, no message by the analyzer
The analyzer no longer outputs a message when the purge air supply or the heater fails.
▸
Install suitable monitoring or remove the subassemblies.
Material required Part number Required for
Personal protective equipment --- Protection when working on the stack
Flange cover --- Covering the flange
Table 19: Material required for disassembly
WARNING: Hazards when removing the SR-unit
▸
Observe the information concerning removal of the SR-unit, see “Swiveling out
and removing the SR-unit”, page 49 .
WARNING: Measuring probe can be hot
When the temperatures in the gas duct are high, the removed measuring probe is
hot.
▸
Wear suitable heat-resistant gloves.
▸
Provide a heat-resistant support.