ABB SCK - Page 102

102 Operating instruction SCK Gas Sampling System OI/SCK-EN Rev. E
Connect the compressed-air tubes as follows:
Step Procedure
1
Cut the compressed-air tubes to length.
2
Lay and fasten compressed-air tubes along designated path.
3
Connect compressed-
air tubes to the module screw connectors
as per the pneumatic/hydraulic interface plan in the appendix.
Make sure that the compressed-air supply cannot ice up in ambient tempera-
tures below 0 °C, e.g. by installing auxiliary heating.
Observe the following rules:
 Pneumatic connections must be installed so as to rule out any damage
caused by working in the proximity of the sampling system. ABB recom-
mends installing tubes on trays or in tube conduits.
 Minimum bending radius of the compressed-air tube is 100 mm. If this is
not possible for technical reasons, ABB recommends installing suitable
pipe adapters.
You can run the tubes for the necessary pneumatic connections ("central
compressed-air supply", "compressed-air tank flow", "compressed-air tank
return") either via the central connection point of the probe retractor or di-
rectly to the screw connectors of the pneumatic box.
Run the tubes via the central connection area as follows:
Step Procedure
1
Remove cover panels at rear of probe retractor.
2
Insert tubes in the existing cable/tube trough and fasten with
cable ties.
3
Connect to the screw connectors.
4
Replace cover panels and screw in place.
Connecting the
compressed-air
tubes
Preventing icing
Installing tubes
Alternative mode of
installing tubes