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8012707/ZVF9/V2-1/2019-04 | SICK OPERATING INSTRUCTIONS | GM32
Subject to change without notice
CLEARING MALFUNCTIONS 7
7.4 Inadequate purge air supply (for GMP probe)
Indications of inadequate purge air supply
● Unusual noise from the area of the purge air unit.
● On systems with pressure difference sensor: An appropriate error message occurs.
● Rise in enclosure temperature.
● Unusually rapid contamination of the GM32 window.
Check the purge air unit
▸ Remove the purge air hose on the SR-unit: A strong air flow must be noticeable.
▸ Reinstall the purge air hose immediately.
Measures if purge air supply is inadequate
▸ If the purge air unit is not immediately functional: Remove the SR-unit from the gas duct
(swiveling out is sufficient for short malfunctions).
▸ Immediately restore correct operation of the purge air unit or replace provisionally by a
different purge air supply with at least the same purge air throughput.
Information for fast correction of faults
● Air filter of purge air unit clogged?
● Purge air hose slipped off or broken?
● Power supply of purge air unit failed?
7.5 Malfunctions on the connection unit
A green LED lights on each power supply unit in the connection unit.
If no LED lights: Check the voltage supply of the connection unit.
Otherwise, please contact SICK Customer Service.
NOTE: Inadequate purge air supply can damage the gas analyzer.
▸ If there are signs of incorrect purge air supply, immediately perform the measures
listed below.
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