ABB SCK - Page 73

OI/SCK
-EN Rev. E Operating instruction SCK Gas Sampling System 73
Danger Where / in what situa-
tion does the danger
arise?
Preventive action
Danger due to
current-carrying
parts
When working on elec-
tric components
 Only specialized electrical
personnel may work on
the electric system.
 Disconnect the gas sam-
pling system from the
power supply before
opening the connection
and terminal box.
 Observe national regula-
tions pertaining to elec-
trical equipment.
 The main terminals -X30,
-X40 and the input termi-
nals of the main switches
-Q30, -Q40 are live even
when the main switches
are off.
 All metallic parts in the
environment that can be
touched at the same time
as the machine must also
be grounded together.
 Check pre-protection
according to the docu-
mentation.
Risk of burning due
to hot surfaces
The following compo-
nents are very hot
during and after opera-
tion of the gas sam-
pling system:
 the cooling module
 the heated sample
gas lines
 the connection box
for the heated sam-
ple gas line on the
retractor
 the heated sam-
pling filter
 the entire gas sam-
pling probe
 the metal structure
of the retractor
 the shutter of the
duct opening
 Do not touch these com-
ponents during and after
operation.
 Do not touch these com-
ponents until they have
cooled down to less than
50 °C.
 If it is unavoidable to
touch hot components,
wear a face mask against
heat, heat-proof gloves
and protective welder's
clothing.