Tweco A80-A120 CutMaster - Manual (Page 24)

CUTMASTER A80, A120
INSTALLATION Manual 0-5119
3-2
NOTE
The upper screws and lower screws are not the
same. Do not mix them. The upper screws are
for threading into the plastic of the front and rear
panels. DO NOT use the finer threaded lower
screws for this.
Art # A-08429
Lower
Screws
Lower
Screws
Slots
Upper
Screws
2. Carefully pull the Cover up and away from the
unit.
B. Cover Installation
1. Reverse previous procedures for cover instal-
lation.
NOTE
When installing the upper screws, attempt to
reuse the original threads. The easiest way to
do this is by turning the screw counter-clockwise
until you feel the threads line up, then begin to
turn the screw clockwise to tighten. Do not
over tighten.
C Primary Input Power Connections
CAUTION
Check your power source for correct voltage
before plugging in or connecting the unit. The
primary power source, fuse, and any extension
cords used must conform to local electrical code
and the recommended circuit protection and
wiring requirements as specified in Section 2.
The following illustration and directions are for wiring
three phase input power.
Art # A-08548
Input Power Cable Connections
Three-Phase (3ø)
GND
L1
L2
L3
L4
Three Phase Input Power Wiring
D. Connections to Three Phase Input Power
WARNING
Disconnect input power from the power supply
and input cable before attempting this procedure.
These instructions are for changing the input power
and or cable on the 208/230, 400, 460 VAC Power Sup-
ply to Three - Phase input power.
1. Remove the Power Supply cover per instruc-
tions found in this subsection A.
2. Disconnect the original input power cable
from the main input contactor and the chassis
ground connection.
3. Loosen the through - hole protector on the back
panel of the power supply. Pull the original
power cable out of the power supply.
4. Using a customer supplied four - conductor
input power cable for the voltage desired, strip
back the insulation on the individual wires.
5. Pass the cable being used through the access
opening in the back panel of the power supply.
Refer to Section 2 for power cable specifica-
tions.
CAUTION
The primary power source and power cable must
conform to local electrical code and the recom-
mended circuit protection and wiring require-
ments (refer to table in Section 2).
6. Connect the wires as follows.
• Wires to L1, L2 and L3 input. It does not
matter what order these wires are attached.
See previous illustration and on label in the
power supply.
• Green / Yellow wire to Ground.