Tweco 281 Thermal Arc Fabricator - Manual (Page 26)

FABRICATOR 281
3-4 April 10, 2006
3.06 Quick Setup
CAUTION
To obtain adequate air flow and cooling for
the Power Supply components, the four
wheels must be fitted. Alternatively, the Power
Supply may be raised 5.5” (140mm) from
the floor using supports that do not restrict
airflow.
NOTE
The steps in this subsection are intended for
individuals experienced in the set up of this
type welder. More detailed setup instructions
are in the 3.07 and following subsections.
1. Mount the A2281 wire feeder unit on top of the
Fabricator 281 power supply.
1. Connect the work lead to the negative (-) socket
(positive + for Self Shielded Flux Cored Wire)
2. Connect the GUN lead to the positive (+) socket
(negative - for Self Shielded Flux Cored Wire)
NOTE
See section 3.15 "Polarity Changeover" for
more detail and exceptions!
3. Position a gas cylinder on the rear tray and secure
to the Power Supply cylinder bracket with the
chain provided. If this arrangement is not used
then ensure that the gas cylinder is secured to a
building pillar, wall bracket or otherwise securely
fixed in an upright position.
!
WARNING
If the gas cylinder is not secured to the
cylinder tray, the power supply must be kept
from moving to avoid over-extending the gas
hose which can result in personal injury,
damage to the power supply, flowmeter and
gas cylinder.
4. Fix the cable stowage hook to the Power Supply
cylinder bracket with the bolts provided.
5. Fit the gas Regulator/Flowmeter to the gas
cylinder and connect the gas hose from the rear
of the Wirefeeder to the Flowmeter outlet.
6. The machine is fitted with a .035/.045” vee groove
feed roll suited for hard wire. Change this feed
roll if required to fit your chosen wire size.
7. Fit the electrode wire spool to the wire reel hub
located behind the electrode wire compartment
door.
8. Fit the TWECO Weldskill MIG gun and trigger wires
through/to the front of the unit.
9. Remove the contact tip from the gun.
10. With the gun lead reasonably straight, feed the
wire through the wire drive rolls and gun.
11. Fit the appropriate contact tip and replace insulator
and nozzle.