Nordson 3100V Series Customer Product Manual page 254

Control
B
2-21
4.
Use an ohmmeter
to measure the resistance
of
the harnesses
connected to the following connectors on the 480 VAC distribution
board and take action as directed.
WARNING:
Risk
of equipment damage, personal injury or
death. This procedure
requires you to perform electrical
troubleshooting
with the power on.
Use extreme
caution and
refer
to
Electrical
Safeg During
Troubleshooting and Opening
and Closing the Electrical Enclosure
for instructions on safely
working inside the electrical enclosure.
5.
Restore power to the unit
at
the branch circuit disconnect switch and
turn
the unit
on.
6.
Use
a
voltmeter
to measure the voltage at pins
1,
2, and
3
of
the
harness connected to XI D
on the 480 VAC distribution board.
Voltage
does not measure 432-528 VAC:
make
sure the unit is
connected to
the input power supply and that 480 VAC is being
supplied.
Make sure
the electrical connections
at
TB1 on the 480
VAC distribution board are
correct.
Refer
to Connecting Electrical
Se rui
ce in lhe
I
nstal
I
afion section.
a
a Voltage measures 432-528 VAC: normal indication.
Go to
the
next step.
Harness Connector
Measure
resistance
across harness
pins...
Reading
Action
480 VAC distribution board to
transformer primary winding
x1D
1
and3
High ohms Replace the transformer
Low ohms Go to the next step.
480 VAC
distribution board to
transformer secondary
winding
X1D
6andB
High ohms Replace the
transformer
Low ohms Go to
the next step
480 VAC
distribution board to
TBlA
and
TBlB
X3D
2and4
High ohms Replace the harness
Low ohms
Go to
the next step
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2000 tlordson Corporation
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rights
reserved
41-3000y
lssued
5/0O
82EN-04-[3V-X-4XXVI-s