ABB ProKiln GAC400 Operating Instruction page 108

108 ProKiln GAC400 PROBE GAS SAMPLING SYSTEM | OI/GAC400-EN REV. A
... 11 Maintenance
... Maintenance work
Checking for leaks
Safety measures
WARNING
Dangers when performing maintenance work.
Always take the following safety measures when performing
this work:
• Wear a face mask against heat, heat-proof gloves, and
protective welder's clothing.
• Operation/Service Mode -50S15 switch must be in the
Service Mode (with a padlock).
• Additionally press the EMERGENCY STOP switch.
• Do not enter the danger area around the retractor until it
is at standstill and the warning lamps and buzzer are off
and the shutter is closed.
• Do not perform the work until the probe gas sampling
system has cooled down.
• Lock the shutter before starting the work, unlock the
shutter only after finishing the work.
• Always keep the floor around the probe gas sampling
system clean and dry.
Explanation of safety measures: Safety instructions for
maintenance work on page 98.
Introduction
Sample gas paths, the compressed-air system and cooling-water
circuit must be checked for leaks on a regular basis.
Maintenance interval
twice yearly
Or as required in the following cases:
• Sample gas paths: additionally, after opening sample gas
lines inside the connected analyser cabinet
• Cooling-water circuit: additionally, when level in the cooling-
water tank level drops frequently
• Compressed-air system: additionally, when pressure drops in
the compressed-air system without any cleaning process
taking place.
Required tools
The following tools are required:
For checking the compressed-air system and cooling-water
circuit for leaks:
• Soap or leak detection spray for compressed air system
For checking the sample path system
• Silicone plug (included)
• Tool to remove probe end nozzle (included)
• 2-3 m plastic hose with fittings
• Glass/plastic transparent bottle 0,5-1 litre filled with water
• Vacuum pump
1 Silicone plug 50 - 60 mm ø
2 Filter centre pipe removal tool
30 mm
Figure 53: Required tools
1 2
3 Filter and nozzle removal tool
42 mm
3