Tweco VAF4HD Transmig - Manual (Page 46)

TRANSMIG VAF4HD
INSTALLATION, OPERATION AND SETUP 3-28 Manual 0-5269
3.15 Installing Welding Wire Spool
!
WARNING
Fully tighten all fasteners.
There are 3 holes on the spool hub support. The top screw hole is for installing a coil of 400mm (30kg) diameter.
In this case a 30kg coil holder must be used. The 30kg coil holder is attached to the spool hub in the same way
as for a 300mm spool, then the coil is placed over the 30kg coil holder & locked in place. The middle hole is for
installing a spool of 300mm diameter (as shown in Figure 3-27). The bottom hole is for installing a spool of 200mm
diameter. As delivered from the factory, the unit has the spool hub fitted into the middle (300mm spool) position.
1. Remove the retaining clip from the spool hub.
2. Install the wire spool over the spool hub, locating the hole in the spool, with the alignment pin on the spoolhub.
3. Insert the retaining clip back into the spool hub.
NOTE
Install the welding wire spool so that the wire feeds from the bottom of the spool into the input wire guide.
Screw Hole for
400mm Spool
Screw Hole for
300mm Spool
Screw Hole for
200mm Spool
Retaining clip
position for
200mm spool
Spool Hub
Alignment Pin
3-lobe Screw
Wire Spool (300mm)
Retaining Clip
Art # A-11776
Figure 3-27 Installing Welding Wire Spool
3.16 Wire Reel Brake
The wire reel hub incorporates a 3-lobe screw which is adjusted during manufacture for optimum braking.
If it is considered necessary, adjustment can be made by turning the 3-lobe Screw inside the open end of the hub
clockwise to tighten the brake. Correct adjustment will result in the wire reel circumference continuing no further
than 10-20mm after release of the trigger. The electrode wire should be slack without becoming dislodged from
wire spool. Please refer to Figure 3-28.
3-lobe Screw
Retaining Clip
Wire Spool Hub
Alignment Pin
Art # A-11777
Figure 3-28 Spool Hub Assembly (with spool hub assembly installed)
CAUTION
Overtension of brake will cause rapid wear of mechanical WIREFEED parts, overheating of electrical
componentry and possibly an increased incidence of electrode wire Burnback into contact tip.