Nordson 3100V Series Customer Product Manual page 242

Control
B 2-g
Problem Possible Cause Corrective Action
Displays do not illuminate
or
displays illuminate but unit
will not power on and no
faults
are displayed
No input
power
Defective POWER switch
lncorrect
voltage plug at X3 on power
board or
plug not connected
Blown
fuse or fuses
on
480 VAC
distribution board
Blown
fuse or fuses on power board
Defective harness
on
480 VAC
distribution board or defective
transformer
Contactor K1 on 480 VAC distribution
board
or power board not engaging
Power board not properly connected
to control board
Defective
power board or control
board
Make sure
the power
is
turned on at
your branch circuit disconnect switch
and
that your power supply
is
supplying
480 VAC to the
unit.
Make sure the
voltage measures 480 VAC
at
TB1
on
the 480 VAC distribution board. lf
necessary check your electrical
connections
at
TB1.
Refer
to
Connecting Electrical Seruice
in
the
lnstallation section.
Check
the
POWER
switch.
Refer
to
Checking the
POWER Switchin
Trou
b I
es
hooti
n
g
P
roced
u
re s.
Make sure the
voltage plug
at
X3
on
the
power board is part227 567 and that the
plug is securely connected. See Figure
B 2-14 for the location
of
the voltage
plug.
Use an ohmmeter to check
fuses
F1
through F4 on the 480 VAC distribution
board.
Replace blown
fuses.
Refer to
Replacing
a
Fusein Repair Procedures.
Use an ohmmeter to check
fuses
F9 and
F10 on
the power board. Replace blown
fuses.
Refer to Replacing
a
Fusein
Repair Procedures.
Check
the harnesses and transformer.
Refer
to
Checking the 480
VAC
Distribution Board Harnesses and the
Tran
sf
o
rm
e
r
in
Trou blesh ooti
ng
Procedures.
While pressing the unit's HEATERS key
on and off, listen for the K1 contactors to
engage.
You
can also open the unit and
visually examine the contactors to see if
they are engaging. See Figure
B
2-4tor
the location of K1 on each board. lf
K1
is not engaging, replace the 480 VAC
distribution board
or
the power board as
appropriate.
Refer
to
Replacing a
Unit-Specific Board or Replacing
a
Control
Assembly Board in Repair
Procedures.
Make sure
the power board is properly
connected to the control board at XP1.
The pins from the control board should
extend
through XP1
on
the power board.
Replace
the control assembly. Refer to
Replacing the Control Assembly
in
Repair Procedures.
q000
Nordson Corporation
All
rights
reseNed
41-3000v
lssued 5/00
82
EN-04-[3V-X-4XXVI-s