Figure 6. Drive Roll Housing
5/16-inch hose that connects the Feecier to the water
ment of the bushing with the drive rolls may require
moving the end of the casing assembly horizontally
supply. The gas hose is a customer-furnished, 5/16-
inch hose that connects the Feeder to the gas supply.
toward or away from the drive rolls and/or shifting
the casing retainer housing. If any of these adjust-
b. If supply water pressure exceeds 75 psi, install
ments are necessary, proceed as follows:
a water pressure regulator at inlet end of water hose.
q. Back out the casing retainer screw sufficiently to
c. If continuous water cooling for severe service
allow the casing to slide forward or backward. Bring
conditions is required, refer to control manual for
the casing inlet bushing close to the drive rolls and
necessary re-connection of the control cable leads.
retighten the screw.
r. Loosen the casing retainer housing screws, if re-
For adequate cooling, water
quired, sufficiently to allow movement of the housing.
must flow at the rate of at least two
s. Observing the drive rolls from the side of the
pints per minute requiring a pres-
housing, the top of the casing inlet bushing should be
sure of about 30 psi. The gun will
evenly spaced between the upper and lower drive rolls.
not operate unless the water pres-
Retighten the screws.
sure switch (factory-set at 25 psi)
is closed. However, in unusual
2.7 CONNECTING FEEDER IN SYSTEM
cases, a clogged or pinched water
a. The Feeder is interconnected (Fig. 7) with a Con-
line might generate enough back
trol, welding power source, gun, and (if power source
pressure to close this switch even
with insufficient cooling water in the
does not contain a primary contactor) a secondary
system. For this reason keep end of
contactor. This requires two water hoses (water-
water drain hose visible at all times.
cooled guns only), a gas hose, a multi-conductor cable,
and a contactor- to-feeder cable (or power source to
feeder). One of the water hoses (water-out-to- relay)
2.8 CONNECTING GUN TO FEEDER
and the multi-conductor cable are supplied in a hose
a. Attach the gun casing as explained in paragraph
and cable kit available in three sizes as shown in Table
2.6 of the gun manual.
II. The other water hose is a customer-furnished,