Nordson 3100V Series Customer Product Manual

B 2-16 Control
Over-Temperature
(OT)
Fau lt
(contd.)
b. To
verify
that something
other than the control system is affecting
a heated zone,
turn on the
Display
Heater Proportioning feature
(Feature
No. 21)
for the affected zone. When the display blinks on
and off, it means the control system is
proportioning
heat controlto
the heater. During
proportioning,
the temperature displayed for
the zone
should stay fairly constant, within +/-1
"F.
lf the
temperature
continues to rise during
proportioning,
then something
other
than the control system is closing the triacs on the
power
board
and causing the heaters
to
heat. lf
electrical
noise from DC
drives is causing the
overheating
problem,
then
you
may
be
experiencing
problems
with other
equipment
in
your
facility.
Take
the following steps
to solve electrical noise
problems:
lnstallthe
proper
line reactor.
Consult
with
the
DC
drive
manufacturer for
the appropriate line reactor size.
Electrically
ground
the hot melt unit
to the
parent
machine
using as short
a
length
of twisted cable as
possible.
lf the triacs continue to close
after
the hot melt unit
is
grounded
to the
parent
machine, install a line filter on each
input
power
line to the hot melt
unit. Connect
the filter
line-to-line.
Refer to Partsfor the line filter
part
number. For
a
three-phase system, order three filters.
c.
lf
the faulted zone is a hose or
gun,
replace
the
hose or
gun
with
a
hose or
gun
that is known to be
good.
lf the fault disappears,
replace
the defective hose or
gun.
lf the fault remains, continue to
the next step.
3. lf the fault remains
after
you press
the CLEAR FAULTS
key
and after
you
have
taken the actions in step 2, check the heater or heater
circuit of the faulted zone. Refer
to Checking a
Heater or Heater
Circuit
in Troubleshooting
Procedures.
4. lf the fault remains
after
you
have
taken all the actions in this
procedure,
replace
the control assembly. Refer to Replacing the
Control
Assembly in Repair
Procedures.
a
a
a
82 EN-04-[3V-X-4XXVj-s
41-3000v
lssued
5/00
@
2000 Nordson Corporation
All rights reserved

Nordson 3100V Series Specifications

General

Brand	Nordson
Model	3100V Series
Category	Melting Machines
Language	English