Tweco CutMaster 12mm-20mm-25mm - Manual (Page 24)

CUTMASTER 12mm, 20mm, 25mm
INSTALLATION 3-2 Manual 0-5117
A. 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 replacing a 380/400V
input power cable to the Power Supply for
Three - Phase input power.
1. Remove the Power Supply cover per
instructions found in section 5.
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 - con-
ductor 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 protection and wiring
requirements (refer to table in Section 2).
6. Connect the wires as follows.
• Set Jumper wires on the contactor. See
illustration.
• Green / Yellow wire to Ground.
• Remaining wires to L1, L2 and L3
input. It does not matter what order
these wires are attached. See the pre-
vious illustrations.
7. With a little slack in the wires, tighten
the through - hole protector to secure the
power cable.
8. Reinstall the Power Supply cover per
instructions found in section 5.
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.
3.04 Gas Connections
Connecting Gas Supply to Unit
The connection is the same for compressed air
or high pressure cylinders. Refer to the follow-
ing two subsections if an optional air line filter
is to be installed.
1. Connect the air line to the inlet port. The
illustration shows typical fittings as an
example.
NOTE
For a secure seal, apply thread sealant to the
fitting threads, according to 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.
Art # A-07943
Hose Clamp
Regulator/Filter
Assembly
Inlet Port
Gas Supply
Hose
1/4 NPT or ISO-R
to 1/4” (6mm) Fitting
Air Connection to Inlet Port