Preventative Maintenance; Replacement Of Parts - DeVilbiss JGA Series Operation Manual

Overlap each stroke 50% as you coat
the area. Trigger just before the edge
of the surface to be sprayed. Move
the gun at a constant speed across
the surface and release the trigger.
Repeat the same method on the
1. Turn off air and relieve pressure in
the supply lines, or if using QD
system, disconnect from airline.
2. Release Cup and raise the tube out of
the material. Trigger the Gun and
allow material to drain back into the
cup.
3. Dispose of the surplus material and
clean the cup.
4. Remove air cap (1) and clean. If any
of the holes in the cap are blocked
Nozzle (2) and Needle (7) – Remove
parts in the following order: 10, 8, 7, 1
and 2. Replace any worn or damaged
parts and re-assemble in reverse order.
Recommended tightening torque for
nozzle (2) 17-20 Nm (150-180 lbf in)
Packing – Remove parts
Unscrew cartridge (4). Fit new cartridge
finger tight. Re-assemble parts 7, 8, and
10 and tighten cartridge (4) with spanner
sufficient to seal but to allow free
Spanner – order SPN-5
Cleaning Brush – order 4900-5-1-K3
Service Kit – order KK-4502 add nozzle size as required
(i.e. KK-4502-FF-H)
Seal Kit - order KK-4558. Contains 3a, 4, 18, 19, 21
Pressure gauge Attachment – order GA-515
Gun Mounted Regulator – order DVR-501
Lubricant - order GL-1-K10

Preventative Maintenance

Replacement of Parts

10, 8, 7.
Accessories
return stroke.
11. To prevent accidental discharge of
coating material when the gun is not
in use, always turn off and release air
and fluid pressure.
with coating material use a toothpick
to clean. Never use metal wire which
could damage the cap and produce
distorted spray patterns
5. Ensure the tip of the nozzle (2) is
clean and free from damage. Build up
of dried paint can distort the spray
pattern.
6. Lubrication – stud/screw (6), needle
(7) and air valve (11) should be oiled
each day.
movement of needle. Lubricate with gun
oil.
Air valve (11) – Remove Trigger, parts
6 and 12. Unscrew valve assembly. Re-
assemble, fitting spring to valve head
before fitting valve.
Spreader valve (5) – Caution: always
ensure that the valve is in the fully open
position by turning screw fully counter-
clockwise before fitting to body.
7
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