Control B 2-5
Electrical Safety During
Troubleshooting
Opening and Closing the
Electrical Enclosure
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Before
performing
troubleshooting
activities inside the unit's electrical
enclosure,
you
should exhaust all
methods of troubleshooting the
problem
with the electrical enclosure
closed or with the
power
off. The
troubleshooting tables and
procedures
in this section are organized using
this methodology. ln
general,
you
should
perform
troubleshooting
activities as follows:
Check the displays and lights for warnings,
faults, and other status
information.
Check
your
programmed
settings to make sure they haven't been
changed. Refer
to Records of
System Settingsinlhe
lnstallation
section.
Check
for continuity
and
grounding
between system components
(unit,
guns,
hoses, and
other equipment).
Make sure
your
branch circuit
disconnect switch is
properly
installed.
Make
sure
your power
supply
is supplying the
proper
voltage
Prioritize
troubleshooting
activities to limit exposure to live
power
Perform
troubleshooting activities
involving live
power
last.
Understand
your
system
electrically and mechanically
before opening
the electrical enclosure. Pay
special attention
to
system
power
distribution and to l/O interfaces
with other
equipment.
ldentify and eliminate
potential
electrical
shock hazards
in
the
environment
surrounding
your
unit.
To
troubleshoot control system
problems
or to make
any
repairs,
you
may
need
to access the electrical enclosure.
Use
these
procedures
as
directed to safely access
the electrical
enclosure.
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@
2000 Nordson Corporation
All rights reserued
41-3000v
lssued 5/00
82EN-04-[3V-X-4XXVI-5
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