Repairing Inadequate Purge Air Supply; Malfunctions On The Connection Unit - SICK GM32 Ex Operating Instructions Manual

10.10

Repairing inadequate purge air supply

10.11

Malfunctions on the connection unit

8015558/1O6S/V1-9/2024-08 | SICK
Subject to change without notice
WARNING
Risk of explosion
Some of the work described in this Chapter assumes an Ex free zone.
Wait 20 minutes after switching off the main power supply before opening the
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enclosure.
NOTICE
A faulty purge air supply can damage the measuring system
The measuring system can no longer be protected from contaminated sample gas and
is damaged.
When the purge air supply appears faulty, immediately perform all actions descri‐
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bed in these Operating Instructions.
Indications of insufficient purge air supply
• On systems with pressure difference sensor: An appropriate error message occurs
• Rise in enclosure temperature
•
Unusually rapid contamination of the window of the measuring device
Information for fast correction of faults
• Purge air hose slipped off or broken?
Check purge air supply
Pull the purge air hose on the sender/receiver unit: A strong air flow must be
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noticeable.
Reinstall the purge air hose immediately.
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Measures for insufficient purge air supply
•
If the purge air supply is not immediately functional:
Remove SR-unit and measuring probe from the gas duct.
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• For a short malfunction:
Swiveling the SR-unit out is sufficient
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• Bring the purge air supply back to correct operation immediately.
• Replace provisionally with a different purge air supply with at least the same purge
air throughput.
A green LED lights on each of the power supply units in the connection unit. If no LED
lights:
Check the power supply of the connection unit.
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Contact SICK Customer Service when power supply present.
TROUBLESHOOTING
O P E R A T I N G I N S T R U C T I O N S | GM32 Ex
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