ABB SCC-F, Руководство оператора

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6 SCC-F Sample gas feed unit Operator’s manual 42/23-51 EN Rev. 3
Safety tips for handling electronic measurement devices
Protective lead
connection The protective lead should be attached to the protective lead connector before any
other connection is made.
Risks of loss of
protective lead
continuity The unit can be hazardous if the protective lead is interrupted inside or outside the
unit or if the protective lead is disconnected.
Proper operating
voltage The unit voltage must be set to match the line voltage before the power supply is
activated.
Risks involved in
opening the covers Current-bearing components can be exposed when the covers or parts are
removed, even if this can be done without tools. Current can be present at some
connection points.
Risks involved in work-
ing with an open unit The unit must be disconnected from all power sources before any maintenance
work is performed.
Charged capacitors The unit capacitors can retain their charge even when the unit is disconnected from
all power sources.
Use of proper fuses Only fuses of the specified type and rated current should be used as replacements.
Never use patched fuses. Do not short-circuit the fuse holder contacts.
When safe operation
can no longer be
assured If it is apparent that safe operation is no longer possible, the unit should be taken
out of operation and secured against unauthorized use.
The possibility of safe operation is excluded:

If the unit is visibly damaged

If the unit is no longer operational

After prolonged storage under adverse conditions

After severe transport stresses.
WARNING
EXPLOSION HAZARD Substitution of components may impair suitability for Class I, Division 2.
Do not disconnect equipment unless power has been switched off or the area is
known to be non-hazardous.
I/O connectors must only be connected to Class 2 circuits.