Anest Iwata WA-M220 Manuel D'instructions page 3

GB WA-M220, WA-M220L Automatic Spray Gun
HOW TO CHANGE UNIONS FOR CIRCULATION USAGE
Thread for
fitting gun Pattern adj. knob
Fluid adj. knob
IMPORTANT
1. Pull plug (3-2) out from gun body,
with attached screw (19) as standard
accessory.
2. Put O'ring (3-3) as standard accessory,
where plug (3-2) has been removed.
3. Connect fitting joint tightly to fluid outlet
of manifold (CIR).
4. Connect fluid hose to the joint.
4. HOW TO OPERATE
Suggested operating air pressure is 4 to 5 bar (57 to 71 PSI).
NOTE: Valve orifice inside three-way solenoid valve should be minimum 4mm
(0.157in) and also operating air hose length should be within 10m (32.8ft) with
the inner diameter more than 6mm (0.236in) to avoid delayed operation and
any kind of failure.
200 mm - 250 mm
5. MAINTENANCE & INSPECTION
CAUTION
Before carrying out maintenance and inspection ALWAYS
observe SAFETY WARNING indications.
- Never use spare parts that are not Anest Iwata originals.
- Never damage fluid nozzle tip, fluid needle or air cap holes.
- Never immerse the spray gun completely in liquids such as thinner.
- Never soak air cap in cleaning liquid for extended period even if clea-
ning.
HOW TO PROCEED
The fluid passages of the gun, must be cleaned thoroughly
after each use, especially after use with bi-component paints.
Incomplete cleaning can cause defective pattern shape.
1. Clean fluid passages and air cap set (1). Spray a small amount of cleaner
to clean fluid passages.
Incomplete cleaning can fail pattern shape and uniform particles.
Especially clean fully and promptly after use with two-component paint.
2. Clean each section with brush soaked with cleaner and wipe out with
waste cloth. Do not immerse the whole gun in the cleaner. If done, it can dam-
age parts. When cleaning, never scratch any holes of air cap set, fluid nozzle,
or fluid needle set.
3. Disassembling: Before disassembling, fully clean fluid passages.
During disassembly, do not damage seat sections.
4
A. Disassemble gun and manifold. Manifold can be kept on fixing stay.
Cause manifold is kept on fixing stay, when spray operation continues, just con-
nect gun to manifold without re-positioning. Hoses are kept on fixing manifold.
No need to disconnect and connect again, when maintenance is carried out.
1.Turn wing bolt (9) counterclockwise
2. Remove gun from manifold (12)
B. Disassemble fluid adjustment set (7), piston spring (6), fluid needle valve spring
(5) and fluid needle set (2-2). Pull fluid needle set (2-2) straight to protect
fluid needle packing set (3-4). Remove fluid adj. set (7), piston spring (6) and
fluid needle valve spring (5), then pull out fluid needle set (2-2) from gun body.
Pay attention so that fluid adj. set (7) does not suddenly fly out since it is strongly
pushed by fluid valve spring (5) and piston spring (6).
C. Disassemble air cap set (1) and fluid nozzle (2-1). Remove fluid nozzle (2-1)
after removing fluid needle set (2-2) or while keeping fluid needle (2-2) pulled,
in order to protect seat section.
Tools: Wrench (width 19 mm) - Fluid nozzle
D. Disassemble air piston set (4). Screw rear section of fluid needle set (2-2) into
piston (4) and pull out piston set (4).Be careful not to damage piston packing
(4-1) and o'rings when pulling out piston set (4).
E. Disassemble gun body and fluid needle packing set (3-4). Disassemble front
part and rear part of gun body removing 2 hex. socket head bolts (3-6) from
body. Then remove fluid needle packing set (3-4) from front part of gun and
remove filler block nut (8) from rear part of gun body.
Tools : Hex. Socket screw key (width 4mm) - Hex. socket head bolt
Wrench(width 10mm) - Fluid needle packing set.
C D
E
INSPECTION & REPLACEMENT STANDARD
WHERE TO INSPECT REPLACEMENT PART
a. Each hole passage of Replace if it is crushed or deformed.
air cap (1) and fluid nozzle (2-1).
b. Packing and O ring Replace if it is deformed or worn out.
c. Leakage from seat section Replace them if leakage does not stop
after fully cleaning fluid nozzle (2-1) and
between fluid nozzle (2-1)
fluid needle set (2-2).
and fluid needle set (2-2).
If you replace fluid nozzle (2-1) or
fluid needle set (2-2) only, fully match
them and confirm that there is no leak-
age.
WA-M220, WA-M220L Automatic Spray Gun
4. To adjust fluid needle packing set (3-4), first tighten it by hand while fluid nee-
dle set (2-2) is inserted. Then tighten it further about 1/6 turn (60-degree) by
wrench. When you remove needle packing set (3-4), do not leave plastic piece
of needle packing set (3-4) in the gun body.
IMPORTANT: If you tighten fluid needle packing set (3-4) too much, fluid needle
set (2-2) does not move smoothly, resulting in paint leakage from tip of fluid
nozzle (2-1). Try to adjust it carefully while pulling and pushing fluid needle
set (2-2) by hand checking its movement. If it is tightened too much, first fully
loosen it, then tighten it again carefully. After, assemble gun completely while
pulling piston (4) and checking movement of fluid needle set (2-2). If fluid needle
set (2-2) does not move smoothly, disassemble again and try to adjust it with
the same process.
5. Assemble gun body. Insert filler block nut to hole of rear part of gun body and
insert pin of the front part of gun body to the hole positioned on the front of
rear part of gun body as indicated. Connect front part with the rear part of gun
body, tightening 2 hex. socket head bolts (3-6) equally while fluid needle (2-2)
is inserted to get right centre position. While tightening the 2 hex. socket head
bolts (3-6) to accurately adhere the rear part of the gun to the front part, make
sure that the contact planes are at the same level.
IMPORTANT: Tighten 2 hex. socket head bolts (3-6) while fluid needle set
(2-2) is inserted to avoid that fluid needle set (2-2) will not move smoothly.
The rear part of gun body should be adhered to front part and the 2 contact
planes with manifold (12) should be at the same level, to avoid air and fluid
leakage. Tighten 2 hex. socket head bolts (3-6) equally.
Tool: Hex. Socket screw key (width 4mm) - Hex socket head bolt.
6. Assemble piston set (4). Screw rear section of fluid needle set (2-2) into piston
(4) and insert piston set (4) into the gun body. Apply grease to piston packing
(4-1) and O'rings. ∆ marks are indicated on bottom side of piston. When you
insert piston set (4) into the gun body, please make sure the position of ∆marks
are correct. ∆ marks must be positioned upper side and bottom side of gun
body.
IMPORTANT: Apply grease to piston packing (4-1) and O'rings to avoid that
piston set (4) does not move smoothly.
7. Assemble fluid nozzle (2-1) and air cap set (1).
Tighten fluid nozzle (2-1) and air cap set (1) to the gun body.
IMPORTANT: Fluid nozzle (2-1) should be tightened firmly in order to avoid fluid
leakage and fluttering.
Tools : Wrench (width 19mm) - Fluid nozzle
8. Position of the 2 horns of the air cap set (1), for easier assembly.
The body side has 1 pin to determine air cap position correctly (Vertical or
Horizontal). The air cap has 2 pins for the same function, so air cap can move
between the 2 pins 90°. If the air cap is installed correctly, according to air cap
marking, it will be possible to get the proper position.
IMPORTANT: Turn air cap (1) and when 2 pins hit, tighten air cap cover and fix
it. Horn position is horizontal or vertical.
9. Assemble fluid needle set (2-2), fluid needle valve spring (5), piston
spring (6) and fluid adj. set (7) to gun body. Apply Vaseline or oil to thread
section of fluid adj. set (7) and insert it into gun body while keeping it fully
opened.
IMPORTANT: If fluid adj. set (7) is not fully opened, tip seat section of it can
contact and damage fluid nozzle (2-1) and cause seizure thread.
Tool: Wrench (width 32mm) - Fluid adj. set
10. Turn pattern adj. set (11) counter-clockwise to fully open. And then tighten
pattern adj. guide into manifold (12).
IMPORTANT: If pattern adj. set (11) is not fully opened, tip of it can contact and
damage tip of manifold set (12) and cause seizure of thread.
Tool: Wrench (width 13mm) pattern adj. knob
11. Connect the gun to the manifold (12). Gun is adhered to manifold firmly.
Gun should be adhered to manifold (12) to avoid air and fluid leakage.
4
Plastic piece
White
5
Hallow Upper
Hole front
Pin
Adhered
6
Apply grease
Marks
O'rings
7 8
Pin
Pins
9 10
11
1. Put gun to manifold 2. Turn wing bolt set clockwise to fix.
GB
Hole
Piston
packings
5