Tweco 100XL Plus PAK Master - Manuel (Page 23)

Manual 0-2811 3-5 INSTALLATION
B. Checking Air Quality
To test the quality of air, place the RUN/SET/LATCH
switch to SET 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. Gas Connections
The gas supply is connected to the Two Stage Air Line
Filter Assembly installed on the rear of the unit. The con-
nection is the same for compressed air or high pressure
gas cylinders.
Connect the gas supply as follows:
1. Connect the gas line to the Regulator / Filter As-
sembly inlet port as shown. The illustration shows
typical fittings as an example. Other fittings may
be used. Install the fittings and tighten.
NOTE
Supply hose must be at least #4 hose (1/4 in or 6
mm I.D.).
Two Stage Filter
Assembly
1/4 NPT to
#4 (6mm) Hose
Fitting
#4 (6mm) Gas
Supply Hose
Hose Clamp
A-02744
Figure 3-8 Gas Connection To Two Stage Filter
Assembly
D. Optional Air Line Filter Installation
Filtering is required when using air from a compressor to
ensure that moisture and debris from the supply hose do
not enter the torch. Although the unit is standard with
the Two Stage Air Filter there is an Optional Single-Stage
Filter Assembly that may be used. Install the Optional
Single-Stage Filter as follows:
1. Remove the air hose connected between the Two
Stage Air Filter OUT port and the Regulator/Fil-
ter Assembly.
2. Connect the gas line to the Regulator / Filter As-
sembly inlet port as shown. The illustration shows
typical fittings as an example. Other fittings may
be used. Install the fittings and tighten.
NOTE
Supply hose must be at least #4 hose (1/4 in or 6
mm I.D.).
A-02753
1/4 NPT to
#4 (6mm)
Hose Fitting
Dry Air Filter
Assembly
#4 (6mm)
Gas Supply
Hose
Hose Clamp
Figure 3-9 Gas Connection to Optional Single-Stage
Filter Assembly