Tweco FP-82 - Manual (Page 18)

INSTALLATION 3-2 Manual 0-2870
3.05 Primary Input Power
Connections
Check your power source for correct voltage before con-
necting the unit. This power supply includes a factory-
installed input power cable and plug suitable for 208/
230V (± 10%) single-phase input power.
1. Check your power source for correct voltage before
plugging in the unit.
2. Connect the input power cable (or close the main dis-
connect switch) to supply power to the system.
CAUTION
The primary power source and power cable must
conform to local electrical code and the recom-
mended circuit protection and wiring requirements
(refer to table in Appendix 1).
3.06 Gas Connections
A. Gas Requirements
WARNING
This unit is not to be used with oxygen (O
2
).
Gases: Single Gas - Plasma/Secondary
Compressed Air Only
Pressure: 70 psi (4.8 bar)
CAUTION
Maximum pressure at inlet must not exceed 125
psi (8.6 bar)
Flow: Cutting - 400 scfh (190 lpm)
Gouging - 400 scfh (190 lpm)
scfh = standard cubic feet per hour.
B. Checking Air Quality
To test the quality of air, place the RUN/SET switch to SET
(down) position, place a welding filter lens in front of the torch
and turn on the gas. Any oil or moisture in the air will be visible
on the lens. Do not initiate an arc!
CAUTION
Air supply must be free of oil, moisture, and other
contaminants. Excessive oil and moisture may
cause double-arcing, rapid tip wear, or even com-
plete torch failure. Contaminants may cause poor
cutting performance and rapid electrode wear.
C. Connecting Gas Supply to Unit
The gas supply is connected to the Regulator/Filter As-
sembly located on the rear of the unit. The connection is
the same for compressed air or high pressure gas cylin-
ders. If an optional air line filter is to be installed, refer to
procedures in subsection 3.06-D.
Connect the gas supply as follows:
1. Use customer-supplied fittings to connect the gas line
to the Regulator/Filter. Typical fittings are shown as
an example. Install the fittings and tighten.
Art # A-02999
Hose Clamp
1/4 NPT to 1/4"
(6mm) Fitting
Regulator/Filter
Assembly
Inlet Port
Gas Supply
Hose
Bowl
Gas Connection to Regulator/Filter Assembly
NOTE
For a secure seal, apply thread sealant to the fit-
ting threads, according to manufacturer's instruc-
tions. Do Not use Teflon tape as a thread sealer as
small particles of the tape may break off and block
the small gas passages in the torch.