Gas Connections; Connections To Three Phase Input Power; Connecting Gas Supply To Unit - ESAB A120 Operating Manual

1. Remove the Power Supply cover.
See "A. Cover Removal".
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. If the power cable being used is not the factory
- supplied cable, use a three - conductor input
power cable for the voltage desired and 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 specifications.
CAUTION
!
The primary power source and power
cable must conform to local electrical
code and the recommended circuit pro-
tection and wiring requirements (refer to
table in Section 2).
6. Connect the wires as follows.
• Connect Bus Bar Jumpers on the contactor
as shown in prior illustration and on label in
the power supply.
• Green / Yellow wire to Ground.
7. With a little slack in the wires, tighten the through
- hole protector to secure the power cable.
8. Reinstall the Power Supply cover.
See "B. Cover Installation".
9. Connect the opposite end of individual wires to
a customer supplied plug or main disconnect.
10. Connect the input power cable (or close the main
disconnect switch) to supply power.
F. Connections to Three Phase Input Power
WARNING
!
Disconnect input power from the power
supply and input cable before attempt-
ing this procedure.
These instructions are for changing the input power and
or cable on the 208/230, 400, 460 VAC Power Supply to
Three - Phase input power.
1. Remove the Power Supply cover.
See "A. Cover Removal".
2. Disconnect the original input power cable from
the main input contactor and the chassis ground
connection.
0-5430
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 specifications.
CAUTION
!
The primary power source and power
cable must conform to local electrical
code and the recommended circuit pro-
tection and wiring requirements (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.
7. With a little slack in the wires, tighten the through
- hole protector to secure the power cable.
8. Reinstall the Power Supply cover. See "B.
Cover Installation".
9. Connect the opposite end of individual wires to
a customer supplied plug or main disconnect.
10. Connect the input power cable (or close the main
disconnect switch) to supply power.
3.06

Gas Connections

Connecting Gas Supply to Unit

The connection is the same for compressed air or high
pressure cylinders. Refer to the following subsections
if an optional air line filter is to be installed.
1. Connect the air line to the inlet port. The illustra-
tion shows typical fittings as an example.
NOTE!
For a secure seal, apply thread seal-
ant to the fitting threads, according
to the manufacturer's instructions.
Do Not use Teflon tape as a thread
sealer, as small particles of the tape
may break off and block the small air
passages in the torch.
INSTALLATION
CUTMASTER A120
3-3