ABB ProKiln GAC400 Operating Instruction page 103

ProKiln GAC400 PROBE GAS SAMPLING SYSTEM | OI/GAC400-EN REV. A
Requirements
The following conditions must be met:
• The Service Mode switch is in the Service position, the gas
sampling probe is completely retracted from the kiln (see
Operating the service switch on page 100).
• The Service Mode switch is secured against unauthorized
actuation.
• The probe gas sampling system has cooled down.
• The EMERGENCY STOP switch is pressed.
• The Safety switch at the probe rear cabinet is in OFF
position.
• The Safety switch at the probe rear cabinet is secured
against unauthorized actuation.
Checking and cleaning the control cabinet:
Perform the following steps for the control cabinet:
1. Check general condition of control cabinet with regard to the
following:
• general damage
• missing or loose covers
• visible damage to connection cables any smell, mis-
colouring or unusual noises
2. Check control cabinet for dripping dust, water or other
liquids.
3. In the event of excessive soiling of the surface of the control
cabinet, clean with a soft brush or compressed-air.
4. Clean HMI, particularly edge areas, with compressed-air
and/or moist cloth.
Checking and cleaning the probe retractor
Perform the following steps for the probe retractor:
1. Check general condition of retractor with regard to the
following:
• general damage
• missing or loose covers
• visible damage to connection cables
• any smell, mis-colouring, or unusual noises
2. Check hoses and tubes for kinks, damages or leaks
3. In the event of excessive soiling of the surface of the
retractor, clean with a soft brush or compressed-air; treat
rollers and rails in the same way. Also, the energy chain
containing hoses must be cleaned with compressed-air.
4. Check condition of drive chain with regard to the following:
• chain tension
• chain link wear
• Correct Buggy position: any visible misalignment, strange
angles or bends, any screws or fixing points visibly
loosened.
5. Check air blaster tanks for visible damage or leakage
6. Check probe tube for signs of wear, e.g., polished metal
surfaces. This applies particularly after start-up, after
changing the alignment of the probe, modification of angles,
etc. The calciner outlet measuring point is particularly
affected. If you observe signs of wear, you must reposition
the gas sampling probe in the process gas flow; if you have
any questions regarding repositioning the probe, contact
ABB Service.
Checking the duct opening
Check the wall tube for clogging and deposits at regular
intervals and clean if necessary.
Note
Inserting the gas sampling probe when the wall tube is clogged
can lead to damage to the probe. The same applies to re-
inserting the gas sampling probe after prolonged standstill of
the probe gas sampling system.
Checking and cleaning the water system and cooling unit
Perform the following steps for the cooling module:
1. Check general condition of control cabinet with regard to the
following:
• general damage
• missing or loose covers
• visible damage to connection cables
• any smell, mis-colouring or unusual noises
2. Check hoses and tubes for kinks, damages, or leaks
3. In the event of excessive soiling of the surface of the cooling
module, or after one week at the latest, clean with a soft
brush or compressed-air.
4. Clean motor casing with compressed-air.
5. Clean cooling fins with dry compressed-air
6. Check cooling module environment for any materials that can
fly around easily.
103