ABB SCK - Page 165

OI/SCK
-EN Rev. E Operating instruction SCK Gas Sampling System 165
Perform the following steps for the probe retractor:
Step
Procedure
1
Check general condition of retractor with regard to the follow-
ing:
 general damage
 missing or loose covers

visible damage to electric cables
2
Check hoses and pipes for leaks
3
In the event of excessive soiling of the surface of the retractor,
clean with a soft brush or compressed-air; treat rollers in the
same way.
4
Check condition of drive chain with regard to the following:
 chain tension
 chain link wear
5
In pneumatic box: Check compressed-air oiler for the following:
 damage
 leaks
 oil level
6
Check compressed-air tank (if present) for visible damage.
7
Check probe pipe for signs of wear, e.g. polished metal surfac-
es. This applies particularly after start-up, after changing the
alignment of the probe, etc. The calcinator outlet measuring
point is particularly affected.
If you observe signs of wear, you must reposition the gas sam-
pling probe in the process gas flow; if you have any questions
regarding repositioning the probe, contact ABB Service.
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 gas sampling system.
Perform the following steps for the cooling module:
Step
Procedure
1
Check general condition of cooling module with regard to the
following:
 general damage
 missing or loose covers
 visible damage to connection cables
2
Check hoses and pipes for 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 (accessible at the
back of the heat exchanger).
6
Check cooling module environment for any materials that can
fly around easily.
Checking and
cleaning the probe
retractor
Checking the
duct opening
Checking and
cleaning the cooling
module