.
A complete Parts List is available at www.HobartWelders.com
OM-260273 Page 22
7-3. Overload Protection
802 441
1
Supplementary Protector CB1
CB1 protects unit from overload. If
CB1 opens, unit shuts down.
Reset supplementary protector.
1
7-4. Changing Drive Roll Or Wire Inlet Guide
1
Inlet Wire Guide Securing Screw
2
Inlet Wire Guide
Loosen thumbscrew. Slide tip as close to
drive rolls as possible without touching.
Tighten thumbscrew.
3
Two Or Three Groove Drive Roll
.
Unit comes with one drive roll. Drive roll
included will vary by manufacture date.
Two Groove drive rolls have two different
size grooves. When installed, the groove
size that can be read on the face of the drive
roll is the size of the groove that is lined up for
use.
Three Groove drive rolls have three different
size grooves. The text aligned with the drive
roll retaining pin indicates the selected
groove.
.
VK (Knurled) groove is used for flux
cored wire and V groove is used for solid
wire.
4
Retaining Pin
To secure drive roll, locate open slot and
push drive roll completely over retaining pin,
then rotate drive roll (1/4 turn) to closed slot.
5
Drive Roll Tension Knob
Using flux core wire with VK groove, tension
should be set between 1-1/2 to 2. Higher
setting may cause welding wire to deform
and not allow proper feeding.
Flux Core Wire
−
Recommended stickout is
1/2 in. (12.7 mm) from gun tip.
Solid Wire
−
Recommended stickout is 3/8 in.
(9.5 mm) from gun tip.
Actual drive roll may differ from that
shown. See Section 10 for additional
drive roll configurations.
.030/.035 VK Groove
is used for Flux Core
(Gasless) Wire
.030/.035 V Groove
is used for Solid Wire
Stamped
.030/.035
VK Grooved
Stamped .030/.035 V
2
Two Groove Drive Roll*
4
1
3
5
.
Be sure gun is fully inserted into drive
housing. Liner to drive roll distance
should be within 1/8 in. (3.2 mm). of
each other.
258 380-C
.024 V Groove
.030
−
.035 V Groove
.030-.035 VK Groove
Three Groove Drive Roll*
*Drive roll included will vary by manufacture date.
