Replacing The Control Assembly; Controlassembly Removal - Nordson 3100V Series Customer Product Manual

Control
B 2-39
Replacing
the
Control
Assembly
Follow
this procedure to replace the control assembly. The control
assembly includes the following components:
.
power board
.
control board
.
display board
o
control-end
frame
o
operator panel
Control Assembly Removal
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.
Disconnect
the ground wire
4.
Taking
care not to cut any electrical wires, cut the cable ties that
secure the harnesses at the bottom
of
the control-end frame.
5.
Label or note all board connections for later reference.
NOTE:
See Figure B
2-14
for an exploded drawing
of
the control
assembly parts. The wiring diagram contained
inlhe
Wiring
Diagrams section
at
the end of this manual may also be helpful.
6.
Disconnect all harnesses, ribbon cables, and other connections from
the
control assembly boards.
NOTE:
lf
your unit has an optional l/O board, you must also
disconnect this board from the control board. Refer
to
Series
3000V
lnput/Output Boardinthe Options section for instructions on l/O board
removal.
@
2000
Nordson
Corporation
All
rights reserved
41-3000v
lssued 5/00
82
EN-04-[3V-X-4XXVI-5