Nordson 3100V Series Customer Product Manual

B 2-22 Control
Checking the 480 Vac
Distri
bution Board
Harnesses
and
the Transformer
@ontd.)
Checking a Heater
or Heater
Circuit
7. Repeat
the voltage measurement
at
pins
6
and
B of the harness
connected
to X1D.
Voltage does not
measure 207-253 VAC:
defective harness or
transformer. Replace
the harness. lf replacing the harness
does
not solve
the
problem,
replace
the transformer.
Voltage measures
207-253 VAC: normal indication.
Go to the
next
step.
8. Measure the voltage
at
pins
2 and 4 of the harness
connected to X3D
on
the
480
VAC distribution
board and at TBI
positions
A
and
B
on
the
power
board.
Voltage
does not measure 230
VAC: defective harness
or
transformer. Replace
the
harness.
lf replacing the harness
does
not solve
the
problem,
replace
the
transformer.
Voltage
measures 230 VAC: normal indication.
Return to the
Unit
Not
Powering
On
troubleshooting
table.
Follow this
procedure
to check
a
heater
or
heater
circuit.
WARNING:
Risk
of equipment damage,
personal
injury, or
death. Disconnect
and lock out electrical
power
to the unit,
including inpuVoutput
(l/O)
lines.
1. Place
the unit's
POWER
switch in
the
off
position,
disconnect and
lock out electrical
power
to the unit at the branch
circuit disconnect
switch, and disconnect
and lock out electrical
power
supplied through
any
l/O
wiring.
2.
Open the electrical enclosure.
Refer to Opening
and Closing the
Electrical Enclosure.
3. Check the heater by measuring its resistance
at the heater connector
harness
pins.
Refer
to Table B 2-5 to determine which
board the
zone's
heater connectors
are
located
on. See Figure B 2-4 for
the
location
of the connectors on the boards. Remove
the harness from
the connector
and measure the resistance
across the harness
pins
identified in Table B 2-5.
Resistance reading of zero
(0):
heater short circuit.
Check
for
a
short
in the heater circuit and repair
the short.
lnfinite
resistance reading: open heater
circuit or heater. Go to
the next step.
a
a
a
a
a
a
82
EN-04-[3V-X-4XXyl-s
41-3000y
lssued 5/00
O
2000 Nordson Corporation
All rights reserved

Nordson 3100V Series Specifications

General

Brand	Nordson
Model	3100V Series
Category	Melting Machines
Language	English