Graco PRO AA4000, Инструкция по эксплуатации

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16 307-706
SERVICE
Gun Disassembly
WARNING
Installing and servicing this equipment requires
access to parts which may cause electrostatic
shock or other serious bodily injury if the work is not
performed properly. Do not install or service this
equipment unless you are trained and qualified.
Follow the Pressure Relief Procedure Warning,
page 11, before servicing the gun or any part of the
system. Disconnect the fluid hose from the gun.
NOTE: Check all possible remedies in the
Troubleshooting Charts before disassembling
the gun.
CAUTION
If the plastic parts of the gun must be held
securely, ALWAYS clamp them in padded vice
jaws to prevent damage to the parts.
ALWAYS lubricate o–rings and seals with petro-
leum jelly.
ALWAYS remove gun from worksite for service or
repair. Service or repair area must be clean.
Flush the gun as described under Flush the Spray Gun.
Follow the Pressure Relief Procedure Warning on
page 11. Disconnect the air and fluid line from the gun.
Fig 11
KEY
11 Retaining Nut
12 Air Cap
13 Spray Tip
GG Electrode Wire
GG
11
12
13
Electrode Wire Replacement
1. Unscrew the retaining nut (11). Remove the air
cap (12) and spray tip (13). See Fig 11.
2. Use a needle nose pliers to gently pull the elec-
trode wire (GG) out the back of the spray tip.
3. Install the long end of the new wire in the hole
closest to the tab of the tip. See Fig 11. Push the wire
in, aligning the short end of the wire with the other
hole in the tip. Pull on the front of the wire to seat it.
NOTE: A box of ten electrodes is included in the tool
kit (63).
Ball Seat Housing & Resistor Replacement
1. Unscrew the retaining nut (11) . Remove the air
cap (12) and spray tip (13). See Fig 11.
2. Insert the special wrench (63d) in the front of the
gun. While triggering the gun, unscrew the ball seat
housing (14) and remove it. See Fig 12.
3. If you are replacing the fluid needle assembly, do
not reassemble the gun.
If no further service is required, install the new hous-
ing in the reverse order of disassembly. Torque the
ball seat housing to 1.1 N
m (10 in-lb) (snug); DO
NOT OVER TIGHTEN.
CAUTION
DO NOT over tighten the ball seat housing (14).
Excess torque will damage the housing.
Fig 12
KEY
14 Ball Seat Housing
63d Wrench
63d
14
Torque to
1.1 N m
(10 in-lb)
63d
14