Tweco 181i Thermal Arc Fabricator - Manual (Page 46)

Fabricator 181i
INSTALLATION, OPERATION AND SETUP 3-16 Manual 0-5191
Art # A-10357
Friction Washer
4”（100mm）
Diameter spool
Nut with
Nylon Insert
Spring
Plastic Spacer
Brass Flat
Washer
Flat Washer
Figure 3-9: 4" (100mm)Diameter Spool Installation
3.14 Installing 8" (200mm) Diameter Spool
As delivered from the factory, the Power Source is set for a 8" (200mm) diameter spool.
In order to re-fit a 8" (200mm) spool assemble parts in the sequence shown below in Figure 3-10.
Adjustment of the nut with nylon insert will control the MIG Wire Spool Brake. Clockwise rotation of this nut with
nylon insert tightens the brake. The Brake is correctly adjusted when the spool stops within 3/8" (10mm) to 3/4"
(20mm) (measured at the outer edge of the spool) after MIG Gun trigger is released. Wire should be slack without
becoming dislodged from the spool.
CAUTION
Overtension of brake will cause rapid wear of mechanical WIREFEED parts, overheating of electrical
components and possibly an increased incidence of electrode wire Burnback into contact tip.
Ensure that the alignment pin on the wire spool hub aligns with the hole allocated in 8" (200mm)
diameter spool.
NOTE
This alignment pin can be removed by unscrewing in an counterclockwise direction and locating in the
appropriate position.