DeVilbiss JGA-510 User Manual

Page 1
SERVICE BULLETIN
SB-2-252-J
Replaces SB-2-252-I
Major Repair Kit KK-4987-2
Minor Repair Kit KK-5034
IMPORTANT: Before using this equip­ment, read all safety precautions and in­structions. Keep for future use.
DESCRIPTION
The JGA-510 can be utilized with the wide range of air caps and needles. It is a general purpose, heavy duty, high production spray gun suitable for use with most types of materials. The fluid tip and needle and internal fluid passages are stainless steel.
Conversion to HVLP - The JGA-510, plus JGA-503 models, can be converted to HVLP if desired. Contact DeVilbiss for in­formation.
Note
This gun includes 300 series stain­less steel fluid passages and 300/400 series tip and needle. Guns may be used with chlorinated solvent materials, but see page 2 for additional warnings.
Important: This gun may be used with most common coating and finishing ma­terials. It is designed for use with mildly corrosive and non-abrasive materials. If used with other high corrosive or abra­sive materials, it must be expected that frequent and thorough cleaning will be required and the necessity for replace­ment of parts will be increased.
OPERATION
Note
Protective coating and rust inhibitors have been used to keep the gun in good condition prior to shipment. Before using the gun, flush it with solvent so that these materials will be removed from fluid passages.
Page 6, if any problems occur.
PREVENTIVE MAINTENANCE
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 instrument. This may scratch or burr holes causing 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 the lubricants and packings.
Note
When replacing the fluid tip or fluid needle, replace both at the same time. Using worn parts can cause fluid leakage. Matched sets are avail­able for most pressure feed combi­nations. See Chart 3. Matched sets are particularly recommended with thinner, less viscous materials. Also, replace the needle packing at this time. Lightly lubricate the threads of the fluid tip before reassembling. Torque to 20-25 ft. lbs. Do not over­tighten the fluid tip.
To prevent damage to the fluid tip (4) or fluid needle (33), be sure to either 1) pull the trigger and hold while tightening or loosening the fluid tip or 2) remove fluid needle adjusting screw (28) to relieve spring pressure against needle collar.
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 the fluid inlet adapter and push it down until it is flat against the boss.
4. Place a couple of drops of medium strength blue No. 242 Loctite on threads before installing fluid inlet adapter.
5. Torque fluid inlet adapter to 20-25 ft. lbs., and tighten locknut.
SPRAY GUN LUBRICATION
Daily, apply a drop of SSL-10 spray gun lube at trigger bearing stud (21) and the stem of the air valve (13) where it enters the air valve assembly (17). The shank of the fluid needle (33) where it enters the packing nut (19) should also be oiled. The fluid needle packing (18) should be lubri­cated periodically. Make sure the baffle (6) and retaining ring (1 or 2 ) threads are clean and free of foreign matter. Before assembling retaining ring to baffle, clean the threads thoroughly, then add two drops of SSL-10 spray gun lube to threads. The fluid needle spring (30) and air valve spring (12) should be coated with a very light grease, making sure that any excess grease will not clog the air pas­sages. For best results, lubricate the points indicated, daily.
A. Trigger Points B. Packing C. Adjusting Valves D. Baffle Threads E. Air Valve Cartridge
A
Strain material thru 60 or 90 mesh screen. Adjust fluid pressure to deliver the desired paint volume. Adjust air pressure and flow to provide a uniform dispersion of atomized paint throughout the pattern. Keep air pressure as low as possible to minimize bounce - back and overspray. Excessive fluid flow will result in heavy center spray patterns. Inadequate flows may cause the pattern to split. See “Troubleshooting”,
C
D
Government NSN No. 4940-01-046-9919 = KK-4987-2.
B
E
Page 2
Page 2 SB-2-252-J
SAFETY PRECAUTIONS
This manual contains information that is improtant for you to know and understand. This information relates to USER SAFETY and PREVENTING EQUIPMENT PROBLEMS. To help you recognize this information, we use the following symbols. Please pay particular attention to these sections.
Note
Important information that tells how to Important safety information - A hazard that may cause serious injury or loss of life.
The following hazards may occur during the normal use of this equipment.
Please read the following chart before using this equipment.
HAZARD CAUSE SAFEGUARDS
Fire
Solvent Spray
Inhaling Toxic Substances
Explosion Hazard ­Incompatible Materials
General Safety
Cumulative Trauma Disorders (“CTD’s”)
CTD’s, or musculo- CTD's when using hand tools, tend to affect any such symptoms, see a physician immediately. Other early skeletal disorders, the upper extremities. Factors which may symptoms may include vague discomfort in the hand, loss of involve damage to increase the risk of developing a CTD include: manual dexterity, and nonspecific pain in the arm. Ignoring early the hands, wrist, symptoms and continued repetitive use of the arm, wrist and elbows, shoulders, 1. High frequency of the activity. hand can lead to serious disability. Risk is reduced by avoiding neck & back. Carpal 2. Excessive force, such as gripping, pinching, or lessening factors 1-7. tunnel syndrome & or pressing with the hands and fingers. tendinitis (such as 3. Extreme or awkward finger, wrist, or arm tennis elbow or positions. rotator cuff syndrome) are examples of CTD’s. 6.
Solvent and coatings can be highly flammable Adequate exhaust must be provided to keep air free of or combustible especially when sprayed. accumulations of flammable vapors.
Smoking must never be allowed in the spray area.
Fire extinguishing equipment must be present in the spray area.
During use and while cleaning and flushing, Wear eye protection. solvents can be forcefully expelled from fluid and air passages. Some solvents can cause eye injury.
Certain materials may be harmful if inhaled, Follow the requirements of the Material Safety Data Sheet or if there is contact with the skin. supplied by your coating material manufacturer.
Halogenated hydrocarbon solvents - for Guns with stainless steel internal passageways may be used example; methylene chloride and 1, 1, 1 - with these solvents. However, aluminum is widely used in other Trichloroethylene are not chemically com- spray application equipment - such as material pumps, patible with the aluminum that might be used regulators, valves and cups. Check all equipment items before in many system components. The chemical use and make sure they can also be used safely with these reaction caused by these solvents reacting with solvents. Read the label or data sheet for the material you intend aluminum can become violent and lead to to spray. If in doubt as to whether or not a coating or cleaning an equipment explosion. material is compatible, contact your material supplier.
Improper operation or maintenance of Operators should be given adequate training in the safe use & equipment. maintenance of the equipment (in accordance with the require
Use of hand tools may cause cumulative Pain, tingling, or numbness in the shoulder, forearm, wrist, trauma disorders (“CTD’s”). hands or fingers, especially during the night, may be early
4.
Excessive duration of the activity.
5.
Tool vibration. Repeated pressure on a body part.
7. Working in cold temperatures.
CTD’s can also be caused by such activities as sewing, golf, tennis bowling, to name a few.
prevent damage to equipment, or how
to avoid a situation that may cause
minor inury.
Adequate exhaust must be provided to keep the air free of accumulations of toxic materials.
Use a mask or respirator whenever there is a chance of inhaling sprayed materials. The mask must be compatible with the material being sprayed and its concentration. Equipment must be as prescribed by an industrial hygienist or safety expert, and be NIOSH approved.
ments of NFPA-33, Chapter 15). Users must comply with all local and national codes of practice and insurance company require ments governing ventilation, fire precautions, operation, maintenance and housekeeping. These are OSHA Sections
1910.94 and 1910.107 and NFPA-33.
symptoms of a CTD. Do not ignore them. Should you experience
Information that you should pay spe­cial attention to.
Page 3
CHART 1
NOZZLE COMBINATIONS
Air Cap
Sizes
Order
From
Chart 2
Orifice
mm
AC D E EE EX FF FX FW GX
Tip
in./ .110 .080 .070 .070 .070 .055 .042 .063 .034
2.8 2.2 1.8 1.8 1.8 1.4 1.1 1.6 .9
Fluid Tip and Needle Size
Order From Chart 3
24 P P P 30 P S S S S 58 S P P P 62HD P 64HD P 67HD P 69HD P 80 S S S S 704 P P P 765 P P P 777 P P 797 P P 9000 S S S S
P = Pressure Feed Combination S = Suction Feed Combinations
CHART 2
No. on Ref. No. (1) Ref. No. (3)
Cap Air Cap Air Cap Less Ring
Order With Ring
24 AV-40-24 30 MB-4039-30 58 AV-439-58 62HD MB-4039-62HD 64HD MB-4039-64HD 67HD MB-4039-67HD 69HD MB-4039-69HD 80 MB-4039-80 704 AV-1239-704 765 AV-1239-765 777 31767-777 797 AV-1239-797
CHART 3
FLUID TIPS AND NEEDLES
Tip Orifice If this is *Ref. No. 5 Ref. No. 33 **Ref. No. 36 Size No. on tip Fluid Tip & Fluid Needle Matched Tip & In. / (mm) order Gasket (No. on needle) Needle Set
.110 (2.8) AV-2115-AC AV-650-AC JGA-402-C JGA-4040-AC .086 (2.2) AV-2115-D AV-650-D JGA-402-DEX JGA-4040-D .070 (1.8) AV-2115-E AV-650-E JGA-402-E JGA-4040-E .070 (1.8) AV-2115-EX AV-650-EX JGA-402-DEX JGA-4040-EX .055 (1.4) AV-2115-FF AV-650-FF JGA-402-FF JGA-4040-FF .042 (1.1) AV-2115-FX AV-650-FX JGA-402-FX JGA-4040-FX .063 (1.6) AV-2115-FW AV-650-FW JGA-402-FF JGA-4040-FW .034 (.9) AV-2115-GX - - - - - - JGA-4040-GX
OPTIONAL 300 GR. S.S. W/ U.H.M.W. POLYETHYLENE NEEDLE SEAT
.086 (2.2) AV-4915-D - - - - - - JGA-4056-D .070 (1.8) AV-4915-E - - - - - - JGA-4056-E .055 (1.4) AV-4915-FF - - - - - - JGA-4056-FF .042 (1.1) AV-4915-FX - - - - - - JGA-4056-FX .028 (.8) AV-4915-G - - - - - - JGA-4056-G
.086 (2.2) AV-1415-D AV-617-D JGA-409-D - - ­.070 (1.8) AV-1415-EE AV-617-EE JGA-409-DEEE - - ­.055 (1.4) AV-1415-FF AV-617-FF JGA-409-FF - - -
400 GR. S.S. TIPS & 303 GR. S.S. NEEDLES
OPTIONAL CARBOLOY TIPS & NEEDLES
9000 AV-440-9000
SB-2-252-J Page 3
AIR CAPS
* AV-1 copper gasket included — DO NOT use with JGA-510 gun ** Matched tip & needle sets are recommended to assure leak-free operation
Page 4
Page 4 SB-2-252-J
PARTS LIST
Ref. Replacement Individual No. Part No. Description Parts Required
1 See Chart 2 Air Cap/Retaining Ring 1 2 MBC-368 Retaining Ring 1 3 See Chart 2 Air Cap Less Retaining Ring 1 4 See Chart 3 Fluid Tip 1
*5 GTI-33-K5 Seal Kit (Kit of 5) 1
6 GTI-425 Baffle Assembly 1 7 MSV-3-K10 Fluid Inlet Gasket (Kit of 10) Teflon (blue) 1 8 --- Lock Nut 1 9 --- Fluid Inlet Adapter 1
10 JGA-4044 Fluid Inlet and Nut Kit 1
*•11 JGS-72-K10 Gasket Kit (Kit of 10) (Teflon ) 2
*12 MBD-12-K25 Spring Kit (Kit of 25) 1 *13 JGS-431-K25 Air Valve Kit (Kit of 25) 1
*•14 JGS-26-K25 U Cup Seal Kit (Kit of 25) 1
*15 JGA-15-K25 Washer Kit (Kit of 25) 1 *16 JGA-14-K25 Snap Ring Kit (Kit of 25) 1
17 JGS-449-1 Air Valve Assembly 1
*•18 JGV-463-K3 Packing Kit (Kit of 3) 1
19 34411-122-K10 Packing Nut Kit (Kit of 10) 1
*20 --- Screw 1
21 JGS-478 Stud and Screw Kit (Kit includes 1
22 JGS-477-1 Trigger, Stud and Screw Kit 1
23 JGA-132 Plug 1 24 P-MB-51 Nipple 1 25 JGA-497-1 Fan Adjustment Assembly 1
*26 --- Retaining Ring 1
*•27 SSG-8069-K25 O-Ring (Viton) (Kit of 25) 1
28 JGS-16 Adjusting Screw 1
*29 --- Spring Pad (Included 1
*30 MBD-19-K10 Spring Kit (Kit of 10) 1
31 --- Bushing 1 32 JGA-4041 Bushing, Spring Pad and Knob Kit 1 33 See Chart 3 Fluid Needle 1 34 --- Gun Body 1
#35 See Chart 3 Fluid Tip and Needle Set 1
*A quantity of necessary parts is included in Major Repair Kit KK-4987-2 for complete
gun repair and should be kept on hand for service convenience.
•A quantity of necessary parts is included in Minor Repair Kit KK-5034 for gun repair. # Ref. No. 35 includes Ref. Nos. 4 and 33. AV-1 copper gasket also included but not
used with JGA-510 gun. Suffixes - K10 designates kits of multiple parts. (Example) JGS-72-K10 is a kit of 10 gaskets.
3 studs and 5 screws)
(Kit includes 1 each)
with # 30 and 32)
(Not shown)
Government NSN No. 4940-01-046-9919 = KK-4987-2.
GTI-33 Baffle Seal Replacement (5)
1. Remove fluid tip (4).
2. Remove baffle (6).
3. Remove seal (5) from baffle.
4. Assemble seal to baffle with angled
side up as shown at right.
NOTE
The seal should be a tight fit on the baffle. If it is a loose fit on the baffle, assure that it is assembled with the angled side up.
5. Install baffle on gun.
6. Install fluid tip (4) and tighten to 12-15 ft-lbs.
The seal is designed to be a tight fit on the baffle. The seal should be able to be removed using your fingers. If you are unable to re­move the seal using your fingers, insert a small screwdriver be­tween the outer lip and the back of the baffle and pry the seal off.
NOTE
Pry here if necessary
ANGLED SIDE
SEAL
THICK SIDE
BAFFLE
Page 5
SB-2-252-J Page 5
32
33
11
31
30
29
28
25
2
3
See GTI-33 Baffle Seal Replacement
6
Instructions on Page 4.
4
1
Torque to 12-15 ft. lbs.
10
7
8
9
26
5
*
Torque to 20-25 ft. lbs.
18
27
34
19
Fluid Inlet Nipple 3/8 NPS (M)
* 24
16
14
13
12
15
17
Detail Ref. No. 18 - Two piece packing covered by
U.S. Patent No. 5,209,501.
+ Tapered edge faces out towards packing nut.
+Inner Teflon Piece
Outer
U.H.M.W.
Poly. Piece
Fluid Packing
Fluid Needle
Nut
20
11
*23
21
22
*Apply QH-130 (Loctite #242 med. strength blue) sealing compound on threads.
Air Inlet Nipple 1/4 NPS (M)
Torque to 15 ft. lbs.
Page 6
Page 6 SB-2-252-J
TROUBLESHOOTING
CONDITION CAUSE CORRECTION
Heavy top or bottom pattern
Heavy right or left side pattern
Heavy center pattern
Split spray pattern
Jerky or fluttering spray
Horn holes plugged. Clean. Ream with non-metallic point. Obstruction on top or bottom of fluid tip. Clean. Cap and/or tip seat dirty. Clean.
Left or right side horn holes plugged. Clean. Ream with non-metallic point. Dirt on left or right side of fluid tip. Clean.
Remedies for the top-heavy, bottom-heavy, right-heavy and left-heavy patterns:
1) Determine if the obstruction is on the air cap or the fluid tip. Do this by making a test spray pattern. Then, rotate the cap one-half turn and spray another pattern. If the defect is inverted, obstruction is on the air cap. Clean the air cap as previously instructed.
2) If the defect is not inverted, it is on the fluid tip. Check for a fine burr on the edge of the fluid tip. Remove with #600 wet or dry sand paper.
3) Check for dried paint just inside the opening. Remove paint by washing with solvent.
Fluid pressure too high for atomization Balance air and fluid pressure. air (pressure feed). Increase spray pattern width with spreader
adjustment valve. Material flow exceeds air cap's capacity. Thin or lower fluid flow. Spreader adjustment valve set too low. Adjust. Atomizing pressure too low. Increase pressure. Material too thick. Thin to proper consistency.
Atomization air pressure too high. Reduce at transformer or gun. Fluid pressure too low (pressure feed only). Increase fluid pressure (increases gun handling
speed). Spreader adjusting valve set too high. Adjust.
*Loose or damaged fluid tip/seat. Tighten or replace. Material level too low. Refill. Container tipped too far. Hold more upright. Obstruction in fluid passage. Backflush with solvent. Loose or broken fluid tube or fluid inlet nipple. Tighten or replace. Dry or loose fluid needle packing nut. Lubricate or tighten.
Unable to get round spray
Will not spray
Starved spray pattern
Excessive overspray
Excessive fog
Dry Spray
Fluid leaking from packing nut
*Most common problem.
Spreader adjustment screw not seating properly. Clean or replace. Air cap retaining ring loose. Tighten.
No air pressure at gun. Check air supply and air lines. Internal mix or pressure feed air cap and tip Change to proper suction feed air cap and tip. used with suction feed. Fluid pressure too low with internal mix cap Increase fluid pressure at tank. and pressure tank. Fluid needle adjusting screw not open enough. Open fluid needle adjusting screw. Fluid too heavy for suction feed. Thin material or change to pressure feed.
Inadequate material flow. Back fluid adjusting screw out to first thread
or increase fluid pressure at tank. Low atomization air pressure (suction feed). Increase air pressure and rebalance gun.
Too much atomization air pressure Reduce pressure. Gun too far from work surface. Adjust to proper distance. Improper stroking (arcing, gun motion too fast). Move at moderate pace, parallel to work surface.
Too much, or too fast-drying thinner. Remix properly. Too much atomization air pressure. Reduce pressure.
Air pressure too high. Reduce air pressure. Gun tip too far from work surface. Adjust to proper distance. Gun motion too fast. Slow down. Gun out of adjustment. Adjust.
Packing nut loose. Tighten, do not bind needle. Packing worn or dry. Replace or lubricate.
Page 7
SB-2-252-J Page 7
TROUBLESHOOTING (continued)
CONDITION CAUSE CORRECTION
Fluid leaking or dripping Packing nut too tight. Adjust from front of pressure feed gun Dry packing. Lubricate.
Runs and sags Too much material flow. Adjust gun or reduce fluid pressure.
Thin, sandy coarse finish Gun too far from surface. Check distance. Normally approximately 8". drying before it flows out
Thick, dimpled finish Gun too close to surface. Check distance. Normally approximately 8". "orange peel". Too much material coarsely atomized. Increase air pressure or reduce fluid pressure.
Fluid tip or needle worn or damaged. Replace tip and needle with lapped sets. Foreign matter in tip. Clean. Fluid needle spring broken. Replace. Wrong size needle or tip. Replace.
Material too thin. Mix properly or apply light coats. Gun tilted on an angle, or gun motion Hold gun at right angle to work and adapt to too slow. proper gun technique.
Too much air pressure. Reduce air pressure and check spray pattern. Improper thinner being used. Follow paint manufacturer's mixing instructions.
Air pressure too low. Increase air pressure or reduce fluid pressure. Improper thinner being used. Follow paint manufacturer's mixing instructions. Material not properly mixed. Follow paint manufacturer's mixing instructions. Surface rough, oily, dirty. Properly clean and prepare surface.
Page 8
Page 8 SB-2-252-J
ACCESSORIES
P-H-5516 Air
Adjusting Valve
HAV-500 or
HAV-501
Adjusting Valve
(HAV-501 SHOWN)
HD-503
SolventSaver™
Hose/Gun Cleaner
HARG-510 Air
Regulator
JGA-4035-K5
Optional 3 Piece
Packings
JGA-52-K10
Leather Packings
Enables user to control and reduce air usage at the gun. Ideal for low pressure spraying.
42884-214-K5 3/8"
42884-215-K10 5/8"
HAV-500 does not have pressure gage. Use to control air usage at gun.
Cleaning Brushes
The VS-531 Low Pres-
sure Fluid Strainer pro­These brushes are help­ful in cleaning threads and recesses of gun body.
vides a final filter for
trapping foreign par-
ticles in the paint sup-
ply.
JGA-156-K10
Spring Clip
In-Line Air Filter
Joins any single piece DeVilbiss air cap MBC­368 or MSA-1 retaining ring. Helps prevent parts loss and provides easier assembly.
TGC-545 (Aluminum) TLC-555
(Teflon Lined)
TSC-595 S.S. 2 Qt. Drip-Free
Suction Cup
Cup has a unique, two position valve which permits selection of either a drip-free or conventional open vent mode.
Removes water, oil, and
debris from the air line.
VS-531 Low
Pressure Strainers
HAF-507
Whirlwind™
2 Qt Hose/Gun Cleaner used to clean the inside of hose, fluid passage­ways of gun & other paint equipment.
QMGZ
SolventSaver™
Use to maintain nearly constant outlet pressure despite changes in inlet pressure and down­stream flow.
Hose/Gun Cleaner
2 Gallon galvanized tank used to clean the inside of hose and material passages of the gun.
Quick Disconnect Approved for
HVLP Guns (Air)
High Flow Ball and Ring Type
HC-4419 1/4"
NPS(F)
HC-4700
1/4" NPT(F)
TLC-576 Aluminum Cup
(Teflon Lined) &
TSC-591Stainless Steel Cup
1 Qt. pressure feed cups. 3/8" NPS (F), cam lock lid. Requires KK-4980 air regulator kit.
Installs into gun to en­able user to control and reduce air usage at the gun. Replaces JGA-132 plug.
HC-4699
1/4" NPT(M)
HC-1166
1/4" NPT(M)
GTI-415 Air
Adjusting Valve
KB-545-SS (S/S) 2 qt. Pressure
Feed Cup With Regulator
Provides greater degree of control over cup fluid pressure.
This 3 piece packing can be used in place of Ref. (18) JGV-463, 2 piece packing.
Spray Gun Lube
SSL-10 (2 oz.
bottle)
Compatible with all paint materials: con­tains no silicone or pe­troleum distillates to contaminate paint. MSDS sheet available upon request.
KB-555 (Aluminum) &
29-3100 Scrubs
Hand Cleaner Towels
Scrubs® are a pre­moistened hand cleaner towel for painters. No water is needed.
Used when abrasive materials are sprayed (i.e. porcelain enamel). Use (2) JGA-52 packings in place of JGV-463 packing.
MSA-4-K10 Fluid
Needle Spring
(replaces MBD-19)
Provides reduced spring force (4 lbs. verses 6 lbs.) for easier trigger pull.
Millennium 3000
Twin Cartridge
Paint Spray Respirator
NIOSH-Certified, for respiratory protection in atmospheres not immediately dangerous to life.
®
WR-103 Wrench
Contains all necessary tip, hose and nut sizes used on or with gun.
JGA-444 Fluid Tube
This tube combines the fluid and air hoses at gun handle preventing drag­ging hoses over work, twist­ing line and improving overall gun handling.
WARRANTY
This product is covered by DeVilbiss' 1 Year Limited Warranty.
DeVilbiss Worldwide Sales and Service Listing: www.devilbiss.com
ITW Industrial Finishing
DeVilbiss has authorized distributors throughout the world. For technical assistance or the distributor nearest you, see listing below.
U.S./Canada Technical Service Office:
195 Internationale Blvd., Glendale Heights, IL 60139 Toll-Free Telephone: 1-888-992-4657 (U.S.A. and Canada only) Toll-Free Fax: 1-800-368-8401
6/04 ©Copyright 2004, ITW Printed in U.S.A.
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