DeVilbiss SB-2-001-F Bedienungsanleitung PDF herunterladen

SERVICE BULLETIN

SB-2-246-G

IMPORTANT: Before using this equip-

ment, read all safety precautions and

instructions. Retain for future use.

DESCRIPTION

The JGHV-531 is a high production, high

volume, low pressure spray gun. It can be

used with a wide variety of finishing mate-

rials. All models are designed to provide

maximum transfer efficiency by limiting air

cap pressure to 10 psi (complies with rules

issued by SCAQMD and other air quality

authorities). The gun is intended for use

with pressure feed paint supply only.

Most finishing materials can be atomized

with the 33A air cap. The 33A air cap should

be used where possible as it consumes

less air volume (CFM) and has slightly

better transfer efficiency than the 46MP or

83MP air caps. However, more difficult to

atomize materials (i.e. low VOC's) or high

flow applications (over 12 ounces/minute),

are ideal for the 46MP (maximum performer)

air cap, fluid tip and baffle combination.

Also available is the 83MP (maximum per-

former) for even higher flows (17 oz./min.

and above), and viscosities. Refer to the air

cap chart for more information. Spray guns

with a 33A nozzle combination can be con-

verted to 46MP or 83MP if desired.

AIR CAPS - PATTERNS - APPLICATIONS

Air *Typical Pattern Size Typical

Cap # and Shape Application

33A 9" long, tapered ends, Most common

similar to #30 air cap.

finishing materials

up to 12 oz./min.

46MP 11" long, straight-sided Low VOC material

similar to #704 air cap 12 to 16 oz./min.

83MP 13" long, straight- Low VOC material

sided, similar to #765 17 oz./min &

air cap. above.

*Actual pattern length dependent upon fluid

tip ID, fluid flow rate, viscosity, air pressure,

and fan pressure.

JGHV-531 HIGH VOLUME LOW PRESSURE SPRAY GUN

Replaces SB-2-246-F

■ Repair Kit KK-4987-2

Standard Combinations Available:

Order No. Gun Inlet Pressure

JGHV-531-33FF, FX 50 PSI

▲ JGHV-531-46FF, FX 50 PSI

JGHV-531-83D, E 65 PSI

JGHV-531-3-46FF* 50 PSI

JGHV-531-3-46FX* 50 PSI

* Models include 300 S.S. fluid tip (U.H.M.W.

Poly. Seat) and Needle

▲ Government NSN No. 4940-01-315-8352

= JGHV-531-46FF

These gun models will produce approxi-

mately 10 psi cap pressure at the corre-

sponding gun inlet pressure, as measured at

the gun inlet. Air cap test kits (see Accesso-

ries) should be used to insure 10 psi air cap

pressure is not exceeded.

Note

This gun may be used with chlorinated

solvents; but, see page 2 for additional

warnings.

INSTALLATION

Do not use more pressure than is necessary

to atomize the material being applied. To

provide optimum performance and assure

compliance with all air quality regulations, an

air cap test gauge kit is available to deter-

mine actual air cap pressures being used.

See Accessories.

Connect the gun to a clean, moisture and oil

free air supply using a hose size of at least

5/16" I.D. Avoid use of quick detachable

connectors. Do not use 1/4" ID hose (25' x

1/4" hose at 18 CFM has a pressure loss

of 25 psi. A 25' x 5/16" hose at 18 CFM has

a pressure loss of 8.1 psi).

Note

Depending on hose length, larger hose

I.D. may be required. Install an HAV-

501 air gauge at the gun handle and

air cap test kit over tip. When gun is

triggered on, adjust regulated pres-

sure to desired setting to provide a

maximum of 10 psi at the air cap.

OPERATION

Adjust fluid pressure to deliver the desired

paint volume. Refer to the next paragraph

also on “Back Pressure”. Adjust air pres-

sure and flow to provide a uniform disper-

sion of atomized paint throughout the pat-

tern. Excessive flow rates will result in

heavy center spray patterns. Inadequate

flows may cause the pattern to split. See

Spray Gun Guide, SB-2-001 latest revision,

for details concerning set up of spray guns

or Troubleshooting section on Page 5.

Back Pressure - 46MP & 83MP “Maximum

Performer”

Due to the unique cone shape of the MP fluid

tips, a slight back pressure is created against

the fluid column. This will reduce the amount

of fluid output. To compensate, increase

the fluid regulator pressure slightly. With

10 PSI cap pressure, back pressures are

approximately 3.5 PSI with the 46MP and

2.0 PSI with the 83MP. This will not cause

more fluid usage.

HVLP requires gun distances of 6-8" be

used. Excess distance will produce inferior

results.

PREVENTIVE MAINTENANCE

Note

If the baffle (6) is removed for any

reason, replace the o-ring (5). To

prevent damage to the o-ring

during installation, apply SSL-10

gun lube to exterior of o-ring and

ID of baffle.

To clean air cap and fluid tip, brush exterior

with a stiff bristle brush. If necessary to

clean cap holes, use a broom straw or

toothpick. Never use a wire or hard instru-

ment. This may scratch or burr holes caus-

ing a distorted spray pattern.

To clean fluid passages, remove excess

material at source, then flush with a suitable

solvent using a device such as the

SolventSaver™ (see Accessories). Wipe gun

exterior with a solvent-dampened cloth.

Never completely immerse in solvent as

this is detrimental to lubricants and packings.

FLUID INLET GASKET (7) REPLACEMENT

INSTRUCTIONS

1. Remove fluid inlet adapter with

appropriate wrench.

2. Clean Loctite from gun body inlet

threads and seal area.

3. Place gasket (7) squarely onto fluid

inlet adapter and push down until flat

against the shoulder.

4. Place a couple of drops of thread seal-

ant (medium strength blue No. 242

Loctite or equal) on threads before in-

stalling fluid inlet adapter.

5. Torque fluid inlet adapter to 20-25 ft.

lbs. and tighten locknut.



Government NSN No. 4940-01-046-9919 = KK-4987-2.

1 2 3 4 5 6

Inhaltsverzeichnis

Seite 1 - SB-2-246-G

SERVICE BULLETINSB-2-246-GIMPORTANT: Before using this equip-ment, read all safety precautions andinstructions. Retain for future use.DESCRIPTIONThe

Seite 2 - Page 2 SB-2-246-G

HAZARD CAUSE SAFEGUARDSFireSolvent and coatings can be highly flammable or Adequate exhaust must be provided to keep air free of accumulationscombusti

Seite 3 - PARTS LIST

SPRAY GUN LUBRICATIONDaily, apply a drop of ✝SSL-10 gun lube attrigger bearing stud (21) and the stem ofthe air valve (14) where it enters the airvalv

Seite 4

Fluid Inlet3/8" NPS(M)Torque to 20-25 ft. lbs.18•19Torque to15 ft. lbs.1226272916303231333491610151413171211782865Torque tip to 20-25 ft. lbs.324

Seite 5

TROUBLESHOOTINGCONDITION CAUSE CORRECTIONHeavy top or bottomHorn holes plugged. Clean. Ream with non-metallic point.patternObstruction on top or botto

Seite 6 - ITW Industrial Finishing

TROUBLESHOOTING (Continued)CONDITION CAUSE CORRECTIONThick, dimpled finish (orangeGun too close to surface. Check distance. Normally 6-8".peel)