ABB ProKiln GAC400 Operating Instruction page 109

ProKiln GAC400 PROBE GAS SAMPLING SYSTEM | OI/GAC400-EN REV. A
Instructions: checking sample gas paths
The following procedure only works if your gas analyser system
is NOT equipped with an air-driven vacuum pump
(ejector/eductor).
How to check the sample gas paths in the probe:
1. Operation/Service Mode -50S15 switch must be in the
Service Mode
2. Switch system to manual mode on the HMI (if this has not
already been done).
Path: Home ► Manual
3. Retract gas sampling probe out of the kiln.
Path: Menu ► Probe Position ► GO S0
WARNING! The probe moves out of the kiln. Do not stand in
the area of travel of the probe or probe buggy until the probe
has reached its end position.
4. When working on the retractor and gas sampling probe,
additionally actuate the EMERGENCY-STOP -15S7 or -150S3
switch for reasons of safety and turn the Safety switch -
101S2 at the probe rear cabinet to OFF position, to prevent
any movement of the probe. This switch can also be secured
with a padlock. Additionally, secure that the flange shutter
remains closed.
5. Remove probe front nozzle at the end of the probe sample
end using the included tool . Follow instructions Probe:
Replacing the intake filter on page 115.
6. Clean the surfaces inside the probe sample inlet with a brush
and a cloth, making sure only minimum dust is left.
7. Insert included silicone plug tightly/firmly.
8. Open the heated sample shut-off valve V5.2 (if available) in
the HMI panel.
Path: Menu ► Probe Cleaning► V5.2 Open
Note: If no heated sample shut-off valve is included in the
probe sample gas system, skip this section.
9. Start the gas pump in the gas analysis system and aspirate
gas from the probe. Check manufacturer's manual for
instructions on how to operate the sample gas pump.
10. Connect a 2-3m plastic hose to the outlet of the gas analysis
system.
11. Fill a 0,5 – 1 litre glass/plastic transparent bottle with water
12. Stick the end of the 2-3m plastic hose down in the bottle to
see the escaping sample gas/air bubbles inside the bottle.
13. Wait 2-3 minutes and let the vacuum build up in the probe
and sample system. (Note: Vacuum should be approximately
-700 to -800mbar).
14. Check that there are only none or very few and occasional
small bubbles in the water bottle (1 bubble per 5 to 10
seconds or longer). Test can be assumed successful if such
condition is met. If test is not successful,
by checking all connections between sample gas pump and
probe.
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find the leakage