Graco D-55, Инструкция по эксплуатации

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Repair
18 311320K
7. Flush injection slots. With valving rod in open
position, flush each injection slot with gun cleaner.
Press flush can needle firmly into cleanout hole to
create seal. Continue until gun cleaner sprays out
chamber tip.
8. Inspect and clean check valves, Remove Fluid
Head Component , page 19.
9. Install tall hexhead check valve on Isocyanate side,
and short hexhead on Resin side.
10. Adjust valving rod adjustment screw one turn
clockwise.
Adjust Valving Rod
In closed position, valving rod should extend
approximately 1/32 in. (1 mm) beyond tip of mixing
chamber. If it does not, follow this procedure:
1. Perform Pressure Relief Procedure (page 13) and
Clean Spray Gun , page 16.
2. Disconnect air supply from gun.
3. Remove spring retainer case. Firmly grasp spring
retainer case, push in and rotate counterclockwise.
Pull spring out of air cylinder.
4. Loosen felt wiper retainer 2-3 turns (DO NOT
REMOVE THE FELT WIPER RETAINER).
5. Remove valving rod. Push back firmly on piston rod
until end of Stop Bar emerges from cylinder
.
6. Loosen stop bar from positioner. Turn positioner to
adjust length of valving rod as required. Retighten
stop bar against positioner.
7. Replace valving rod, spring, and spring retainer
case. Grasp firmly, push in, and turn clockwise to
lock in place.
8. Adjust felt wiper and soak with gun cleaner.
9. Connect air supply to gun.
10. Check action of valving rod. With manual valves
closed, press trigger several times and ensure
valving rod moves freely.
If you have encountered no problems, spray gun is
ready for test spray. Follow
Daily Start-Up procedure
(page 12) and Spray Pattern Adjustment procedure
(page 14).
NOTICE
To prevent damage to chamber, do not release trigger
while cleanout spade is in chamber slot.
F
IG
. 19 Valving Rod (Closed Position)
F
IG
. 20 Retainer Case Removal
1/32 in.
Spring Retainer Case
Spring
F
IG
. 21 Valving Rod Removal
Positioner
Stop Bar