Connect
Connect
Connect the
the
the Waterborne
Waterborne
Waterborne Fluid
Fluid
Fluid Hose
Hose
Hose
Always use a Graco waterborne fluid hose between
the voltage isolation system fluid outlet and the gun
fluid inlet. The waterborne fluid hose consists of
an inner PTFE tube (FT), a conductive layer (FC),
and an abrasion-resistant outer jacket (FJ). The
conductive layer is connected to ground at the gun
fitting bracket (104).
Before connecting the waterborne fluid hose to the
gun, blow it out with air and flush with water to
remove contaminants. Flush the gun before using it.
To reduce the risk of electric shock, install only
one continuous Graco waterborne hose between
the isolated fluid supply and the gun. Do not splice
hoses together.
1.
Remove the gun air inlet fitting (21) from the gun.
Note
This fitting uses a left-hand thread.
2.
Remove the o-ring (21a) and install the fitting in
the bracket. Reassemble the o-ring.
Figure 11 Connect the Fluid Hose
3.
A new Graco waterborne fluid hose comes
fully assembled and ready to install. For fluid
hose assembly and repair instructions, refer to
Fluid Hose Assembly and Repair, page 91
4.
Generously apply dielectric grease (44) to the
o-ring (107) and the threads of the barrel fitting
(106). Pull the fitting back 1-1/2 in. (38 mm) and
apply grease to the exposed PTFE hose to fill the
area between the hose and the fitting. Make sure
the barrel inlet is clean and dry, then screw the
fitting into the fluid inlet of the gun barrel (1).
5.
Loosen the strain relief nut (102) so the bracket
can move freely on the hose.
6.
Align the bracket (104) holes with the air inlet and
exhaust outlet. Secure with the air inlet fitting
(21). Tighten the strain relief nut (102) to secure
the hose.
7.
Check that the nut (105) is tightened securely to
the ferrule housing (103).
8.
Press the exhaust tube (36) onto the exhaust
valve barb (FC). Secure with the clamp (43).
9.
Connect the other end of the hose to the isolated
fluid supply as instructed in the isolation system
manual. The conductive hose layer must be
grounded at the isolation system.
Conductive hose layer (FC) must be grounded
through its connection to the isolation system’s
grounded enclosure (CA) or grounded
fence. To maintain grounding continuity, the
conductive hose layer (FC) must be engaged
in the ferrule when the strain relief nut is
tightened. Failure to properly install the hose in
the strain relief could result in an electric shock.
Figure 12 Shielded Fluid Hose Connection at
Non-Graco Isolation Enclosure
16
3A7504A
