SPRAY TECHNIQUE
The first requirement for a good resultant
finish is the proper handling of the gun.
The gun should be held perpendicular to
the surface being covered and moved
parallel with it. The stroke should be
started before the trigger is pulled and
the trigger should be released before the
stroke is ended. This gives accurate control
of the gun and fluid.
The distance between gun and surface
should be 15 to 20 cm depending on
fluid and atomizing pressure. The fluid
deposited should always be even and
wet. Lap each stroke over the preceding
stroke to obtain a uniform finish. Use
50% overlap.
GENERAL SPRAY
INSTRUCTIONS
Strain material thru 60 or 90 mesh screen.
To reduce overspray and obtain maximum
efficiency, always spray with the lowest
possible fluid/air pressure that produces
an acceptable spray pattern.
Excessive atomizing air pressures can
increase overspray, reduce transfer
efficiency, and with some materials,
result in poor finish quality from
dry spray.
Generally use 30 psi air at gun inlet.
Unusually heavy, difficult to
atomize fluids may require up to 40 psi air
at gun inlet.
CONTROLLING THE FAN SPRAY
The fan spray is controlled by means of the
spray pattern valve. Turning this control
clockwise until it is closed will give a round
spray; turning it counterclockwise will widen
the spray into a fan shape. The fan spray
can be turned anywhere through 360 ° by
positioning the air nozzle relative to the gun.
To accomplish this, loosen retaining ring,
position nozzle, then tighten retaining ring.
AIR NOZZLE, FLUID NOZZLE,
FLUID NEEDLE
1. All nozzles and needles are precision
made. They should be handled with
care.
2. Do not make any alterations in the gun.
To do so could cause finishing
difficulties.
3. To clean nozzles, soak them in solvent to
dissolve any dried material, then blow
them clean with air.
4. Do not probe any of the holes in the
nozzles with metal instruments. If probing
is necessary, use only a tool that is softer
than brass.
TROUBLESHOOTING
Faulty Spray
A faulty spray pattern is often caused by improper
cleaning resulting in dried materials around the
fluid nozzle tip or in the air nozzle. Soak these
parts in thinners to soften the dried material
and remove with a brush or cloth.
If either the air nozzle or fluid nozzle are
damaged, these parts must be replaced
before perfect spray can be obtained.
When replacing the fluid tip or fluid needle,
replace both at the same time. Using worn
parts can cause fluid leakage. Also, replace
the needle packing at this time. Lightly
lubricate the threads of the fluid tip before
reassembling.
Intermittent Spray
If the spray flutters, it is caused by one of the
following faults:
1. Insufficient fluids available. Check supply
and replenish if necessary.
2. Fluid tip not tightened sufficiently.
3. Packing loose or worn.
NOTE
To reduce overspray and obtain
maximum efficiency always spray
with the lowest possible atomizing
air pressure.
CAUTION
Never use metal instruments to
clean the air or fluid nozzles.
These parts are carefully
machined and any damage to
them will cause faulty spray.
!
OPERATING THE 905
SPRAY GUN
AIRPRO AM5008 GRAVITY FEED SPRAY GUN
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Содержание 5008
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