User's Manual

Installation
12 309293L
1. Remove the gun air inlet fitting (35). See FIG. 3.
Fig. 3. Connect the Fluid Hose
NOTE: In a shielded hose system, if a hose failure
occurs where high voltage arcs through the inner tube,
voltage will be discharged to ground through the con-
ductive hose layer. When properly installed, the conduc-
tive hose layer is grounded through its connection to the
grounded enclosure.
Using unshielded fluid hoses minimizes the system
capacitance, resulting in faster response times and a
large reduction in the energy stored in the system, as
compared to shielded hoses. However, without the
ground shiled, a weak static charge can occasionally
build up on the outer surface of the hose. To minimize
any static charge felt on the hose surface, bundle the air
and fluid hose together, and wrap with a protective
cover, as shown in F
IG. 4.
Fig. 4. Bundling the Air and Fluid Hoses
2. For the fluid hose to fit properly, it must be stripped
and assembled to the dimensions in F
IG. 5. Push
the inner tube (T) into the fitting (F) until the tube
bottoms. A new Graco waterborne fluid hose comes
fully assembled to these dimensions.
Fig. 5. Waterborne Hose Dimensions (At Gun)
Fig. 6.
3. Generously apply dielectric grease (40) to the o-ring
(107) and the threads of the fitting (106). Pull the fit-
ting 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 (16). See F
IG. 3.
4. Loosen the strain relief nut (102) so the bracket can
move freely on the hose.
5. Align the bracket (104) holes with the air inlet and
exhaust outlet. Secure with the air inlet fitting (35).
Tighten the strain relief nut (102) to secure the hose.
35
38
39
101
102
103
104
105
107
106
108
16
A
TI2155b
TI21188a
CAUTION
Be careful not to cut into the inner tube (T) of the
hose when stripping the hose. Nicks or cuts in the
PTFE tube will cause premature hose failure.
F
T
A
B
A 7.40 in. (188 mm)
B 2.0 in. (50 mm)
C
J
Shielded Hose 245252
T
C
A 1.25 in (32 mm)
J
A
TI2742A
Unshielded
Hose 246431