ABB SCK, System Manual

Page: 27 / 244

42/23-81 EN Rev. 4 System Manual SCK Gas Sampling System 27
No. Component Function
10
Energy chain Guides pneumatic lines and elec-
trical cables and the heated sample
gas line and cooling water tubes.
11
Probe cleaning unit Controls cleaning functions on the
sample gas probe.
The probe is automatically retracted if the following malfunctions occur:
 Cooling water temperature too high
 Cooling water flow rate too low
 Cooling water pressure too low
 Circulation pump failure
 Power supply interrupted
 Compressed air failure
To protect the process against ambient air from being drawn in and to protect
operators, the duct opening is closed by a shutter when the probe is retracted. This
does not apply, however, to regular retraction/extension for cleaning the outside of
the probe.
The shutter is moved either automatically by a pneumatic drive or manually.
The pneumatic/electric supply is connected at a central transition point. All required
line connections are pre-installed in the probe retractor.
Retraction in the
event of malfunction
Shutter
Supply lines