PDF
EN
SB-E-2-810 ISS.04
AUTOMOTIVE REFINISHING
Technical Bulletin
GFG PRO – Gravity Spray Gun
Table of Contents
Topic
Page
EC Declaration of Conformity
3
Part Numbers
3
Operational Description
3
Kit contents
4
Construction Features
4
Materials of Construction
4
Specifications & Technical Data
4
Safety Precautions
5
Parts List
6
Exploded parts View
7
Installation, Operation, Preventive Maintenance & Cleaning
8
Parts Replacement/Maintenance
9
A. Servicing Air Valve
9
B. Replacing Air Valve
10
C. Needle Packing, Fluid Insert, Spreader Valve Assembly
11
D. Spray Head Seal
12
E. Chart 1 – Air Caps, Chart 2 – Fluid Nozzles &
Fluid Needles
13
Accessories
13
Troubleshooting Possible Problems in Operation
14
Warranty
15
2
© 2008 ITW Finishing Systems and Products
EC Declaration of Conformity
We, ITW Finishing UK, Ringwood Rd, Bournemouth, Dorset, BH11 9LH, UK, as the
manufacturer of the Spray gun model GFG-PRO, declare, under our sole responsibility, that the
equipment to which this document relates is in conformity with the following standards or other
normative documents:
BS EN 292-1 PARTS 1 & 2: 1991, BS EN 1953: 1999; and thereby conform to the
protection requirements of Council Directive 98/37/EEC relating to Machinery Safety Directive,
and;
EN 13463-1:2001, council Directive 94/9/EC relating to Equipment and Protective
Systems intended for use in Potentially Explosive Atmospheres protection level II 2 G X.
B. Holt, Vice President
31st March 2008
ITW Finishing Systems and Products reserve the right to modify equipment specification without prior notice.
Part Numbers
The GFG Pro Sprayguns are available with 2 alternative Aircaps and 3 Nozzles. C1 for base
and clearcoat application. C2 is used for higher viscocity materials. The ordering code for the
spray guns is;
Eg, GFGPRO-C1-14 where;
C1
14
=
=
C1 Aircap. Alternative is C2
14 Nozzle. Alternatives are 16, or 18
Operational Description
This GFG PRo Spray Gun is a professional quality gun designed with conventional high pressure
technology.
IMPORTANT: These Sprayguns are suitable for use with both waterbased and solvent based coating
materials. These guns are not designed for use with highly corrosive and/or abrasive materials and if
used with such materials it must be expected that the need for cleaning and/or replacement of parts
will be increased. If there is any doubt regarding the suitability of a specific material, contact your
DeVilbiss Distributor or DeVilbiss direct.
NOTE: This gun is not to be used with halogenated hydrocarbon solvents or cleaning agents such as
1,1,1,-Trichloroethane or methylene chloride. These solvents can react with the aluminium
components used in this gun and cup. The reaction can become violent and lead to an equipment
explosion.
© 2008 ITW Finishing Systems and Products
3
Kit contents
1
1
1
1
GFG PRO Gravity Feed Spraygun
GFC Gravity feed cup
Cup Filter
Set of 4 coloured identification rings
1
1
1
1
Spanner (10mm and 14mm A/F)
Torx/Flat blade screwdriver
Cleaning Brush
Service bulletin
Construction Features
1
2
3
4
5
6
7
8
9
Air Cap (nickel plated brass for long durability)
10
Air Cap Retaining Ring (allows easy rotation of air cap)
11
Fluid Nozzle (ideal for automotive topcoat systems)
12
Fluid Needle (grooved stem for easy removal)
13
Fluid Inlet (3/8 BSP thread – accepts DeVilbiss and
most other cup systems)
Air Inlet (universal thread, accepts G 1/4 & 1/4 NPS)
Self Adjusting Needle Packing (for trouble free
operation)
Fan Air Adjustment (stepless regulation for fan to
round spray)
Fluid Adjustment (stepless regulation of fluid
volume)
Removable Spray Head (for long gun service life)
15
Interchangeable Colour ID System (4 coloured
rings supplied)
Anodised, forged aluminium gun body
(ergonomic, good looking & durable, easy to
l
) Acetal Cup (easy clean, anti-static)
500cc
16
Cup Lid with Drip Free Vent (avoid drips)
14
Trigger (ergonomic for comfort)
17
Trigger Stud & Screw (easy replacement design)
18
Air Valve (design offers low pull force & low
pressure drop)
Gun acceptable for waterborne and solvent
borne applications
Materials of Construction
Gun Body
Air Cap,
Fluid Nozzle, Fluid Needle, Fluid Inlet, Trigger Stud
Spray Head
Springs, Clips, Screws
Seals, Gaskets
Trigger
Air Inlet, Body Bushing, Spreader Valve Body, Air Valve Nut, Air
Cap Retaining Ring, Knobs
Air Valve Assembly
Anodised aluminium
Nickel plated brass
Stainless steel
Anodized aluminium
Stainless steel
Solvent resistant
Chrome plated steel
Chrome plated brass
Stainless Steel, HPDE
Specifications & Technical Data
Air Supply Connection
Maximum Static Air Inlet Pressure
Gun Air Inlet Pressure all caps with gun triggered.
Fluid Supply Connection
Service Temperature
Gun Weight (gun only)
(with cup)
Universal 1/4" BSP and 1/4" NPS male
P1 = 12 bar (175 psi)
See chart 1, p12
3/8" BSP
0 to 40°C (32 to 104°F)
585g
768g
4
© 2008 ITW Finishing Systems and Products
SAFETY WARNINGS
Fire and explosion
Solvents and coating materials can be highly flammable or combustible when sprayed.
ALWAYS refer to the coating material supplier’s instructions and COSHH sheets before
using this equipment.
Users must comply with all local and national codes of practice and insurance company
requirements governing ventilation, fire precautions, operation and house-keeping of
working areas.
This equipment, as supplied, is NOT suitable for use with Halogenated Hydrocarbons.
Static electricity can be generated by fluid and/or air passing through hoses, by the
spraying process and by cleaning non-conductive parts with cloths. To prevent ignition
sources from static discharges, earth continuity must be maintained to the spray gun
and other metallic equipment used. It is essential to use conductive air and/or fluid
hoses.
Personal Protective Equipment
Toxic vapours – When sprayed, certain materials may be poisonous, create irritation or
be otherwise harmful to health. Always read all labels, safety data sheets and follow any
recommendations for the material before spraying. If in doubt, contact your material
supplier.
The use of respiratory protective equipment is recommended at all times. The type of
equipment must be compatible with the material being sprayed.
Always wear eye protection when spraying or cleaning the spray gun.
Gloves must be worn when spraying or cleaning the equipment.
Training – Personnel should be given adequate training in the safe use of spraying equipment.
Misuse
Never aim a spray gun at any part of the body.
Never exceed the maximum recommended safe working pressure for the equipment.
The fitting of non-recommended or non-original spares may create hazards.
Before cleaning or maintenance, all pressure must be isolated and relieved from the equipment.
The product should be cleaned using a gun-washing machine. However, this equipment should
not be left inside gun-washing machines for prolonged periods of time.
Noise Levels
The A-weighted sound level of spray guns may exceed 85 dB (A) depending on the setup being used. Details of actual noise levels are available on request. It is
recommended that ear protection is worn at all times when spraying.
Operating
Spray equipment using high pressures may be subject to recoil forces. Under certain
circumstances, such forces could result in repetitive strain injury to the operator.
© 2008 ITW Finishing Systems and Products
5
PARTS LIST
REF.
NO.
DESCRIPTION
PART NO.
QTY
REF.
NO.
DESCRIPTION
PART NO.
QTY
1
1
1
Air Cap Retaining Ring
-
1
31
Air Valve Cage
2
Slip Ring
-
1
32
Air Valve Poppet
-
Air Valve Spring
-
1
1
1
3
Air Cap
1
33
1
34
Air Valve Spring Pad
-
-
1
35
Air Valve Seal
-
C1 Aircap & Ring
PROC-120-C1-K
1
36
Air Valve Assembly
C2 Aircap & Ring
PROC-120-C2-K
1
*37
4
Air Cap Retaining Clip
5
Retaining Ring Seal
6
JGA-156-K5
38
Trigger Stud Screw
(T20 TORX)
Trigger
Trigger Stud
7
Air Cap Retaining Ring &
Seals
PRO-405-K
1
*39
8
Fluid Nozzle
See chart 2 p13
1
40
9
Spray Head
-
1
41
Trigger, Stud &
Screw Kit
Plug
SN-402-K
1
-
1
-
1
-
1
SN-21-K
1
-
1
SN-40-K
1
SN-26-K4
1
PRO-411-K
1
*10
Spray Head Seal (kit of 2)
SN-18-1-K2
1
42
11
Spray Head & Seal Kit
SN-17-1-K
1
43
*12
Body Bushing Seal
-
1
44
Air Inlet
Colour ID Ring Kit (4
Colours)
Airflow Valve
13
Body Bushing
-
1
45
Circlip
-
1
14
Body Bushing & Seal
SN-6-K
1
46
Valve Head
-
1
15
Fluid Needle
GFGPRO-320-K
1
47
Washer
-
1
*16
Needle Spring
-
1
48
Valve Body
-
1
*17
Needle Spring Pad
-
1
49
Valve Stem
-
1
18
Fluid Adjusting Knob
Fluid Adjusting Knob,
Spring & Pad Kit
-
1
50
Baffle plate
SN-41-K
1
PRO-3-K
1
51
Gravity Cup Kit
GFC-501
1
2
52
Drip Check Lid (kit of
5)
GFC-2-K5
1
1
53
Gravity Cup Lid
GFC-402
1
2
54
Gravity Cup
-
1
1
55
Filter
2
56
Air valve Service
Tool
1
57
Torx Key
SPN-8-K2
1
58
Stud and Screw kit
SN-405-K5
1
19
-
*20
Retaining Clip
21
Spreader Valve Body
*22
Spreader Valve Seal
23
Spreader Valve Adjusting
Knob
*24
Spreader Valve Pin
25
Spreader Valve Assembly
*26
Needle Packing
-
1
*27
Packing Spring
-
1
28
Packing Nut
-
1
29
Packing, Spring &
Packing Nut Kit
30
Air Valve Body
PRO-402-K
SN-404-K
1
-
KGP-5-K5
-
1
1
SERVICE PARTS
Spray Gun repair kit (includes
PRO-415-1
items marked *)
Seal and Pin Kit, kit of 5
GTI-428-K5
(items 20, 22 and 24)
For accessories, see page 13
6
© 2008 ITW Finishing Systems and Products
© 2008 ITW Finishing Systems and Products
7
INSTALLATION
broom straw or toothpick if possible. If a wire or hard
instrument is used, extreme care must be used to
prevent scratching or burring of the holes which will
cause a distorted spray pattern.
For maximum transfer efficiency, do not use more
pressure than is necessary to atomise the material
being applied.
1.
2.
Connect the gun to a clean, moisture and oil free
air supply using a conductive hose, of at least 8
mm I.D.
NOTE
Depending on hose length, larger I.D. hose may be
required. Install an air gauge at the gun handle.
When gun is triggered on, adjust regulated air
pressure to the required setting (see chart 1 p12).
Do not use more pressure than is necessary to
atomise the material being applied. Excess
pressure will create additional overspray and
reduce transfer efficiency.
NOTE
If an air adjusting valve is used at the gun inlet, use
DGI-501-bar Digital Gauge. Some competitive
adjusting valves have significant pressure drop that
can adversely affect spray performance. The DGI
Digital Gauge has minimal pressure drop.
Attach the gravity feed cup to the material inlet.
NOTE
Before using the gun, flush it with solvent to ensure
that the fluid passages are clean.
OPERATION
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
13.
14.
Mix coating material to manufacturer’s instructions
and strain material.
Fill the cup to no more than 20 mm from the top of
the cup. DO NOT OVERFILL.
Attach Cup Lid.
Turn fluid adjusting knob (18) clockwise to prevent
fluid needle movement.
Turn spreader valve adjusting knob (23) counter
clockwise to fully open.
Adjust inlet air pressure (see chart 1 p12).
Turn fluid adjusting knob counter clockwise until
first thread shows.
Test spray. If the finish is too dry, reduce airflow by
reducing air inlet pressure.
If finish is too wet, reduce fluid flow by turning fluid
adjusting knob (18) clockwise. If atomisation is too
coarse, increase inlet air pressure. If too fine,
reduce inlet pressure.
The pattern size can be reduced by turning
spreader valve knob (23) clockwise.
Hold gun perpendicular to surface being sprayed.
Arcing or tilting may result in uneven coating.
The recommended spray distance is 150-200 mm.
Spray edges first. Overlap each stroke a minimum
of 75%. Move gun at a constant speed.
Always turn off air supply and relieve pressure
when gun is not in use.
To clean fluid passages, remove excess material from
cup, then flush with gun wash solution. Wipe the gun
exterior with a dampened cloth. Never completely
immerse in any solvent as this is detrimental to the
lubricants and life of the spray gun.
NOTE
When replacing the fluid nozzle or fluid needle, replace
both at the same time. Using worn parts can cause fluid
leakage. See page 13, Chart 2. Also, replace the needle
packing at this time. Torque the fluid nozzle to 14–16
nm. Do not over tighten.
CAUTION
To prevent damage to fluid nozzle (8) or fluid needle
(15), be sure to either 1) pull the trigger and hold while
tightening or loosening the fluid nozzle, or 2) remove
fluid adjusting knob (18) to relieve spring pressure
against needle collar.
CAUTION
IMPORTANT– the Gravity cup is made from special antistatic materials, but it still important to avoid generating
static charges. The Cup must not be cleaned or rubbed
with a dry cloth or paper. It is possible to generate a
static charge by rubbing which, if discharged to an
earthed object could create an incendive spark and
cause solvent vapours to ignite. Only use a dampened
cloth or antistatic wipes if manual cleaning is required
within a hazardous area.
PREVENTIVE MAINTENANCE &
CLEANING
To clean air cap and fluid nozzle, brush exterior with a
stiff bristle brush. If necessary to clean cap holes, use a
8
© 2008 ITW Finishing Systems and Products
Parts Replacement/Maintenance
AIR VALVE INSTRUCTIONS
Servicing Air Valve
Reasons to service air valve:
A) Air valve not functioning correctly (may need
cleaning).
B) Routine maintenance.
C) Air leaks (advise replacement, see p10)
1. Remove trigger using the tool supplied (SPN-8) or
TORX T20 key. (See fig 1 & 2)
2. Unscrew air valve using SN-28 (14 mm) spanner.
(See fig 3)
3. Remove air valve by gripping stem. (See fig 4)
4. Remove spring with spring pad. (See fig 5)
5. DO NOT REMOVE REAR SEAL (35) FROM GUN
BODY. (See fig 6)
6. DO NOT REMOVE PLASTIC CAGE FROM AIR
VALVE BODY AS THIS MAY DAMAGE THE CAGE.
(See fig 7)
7. CLEAN
a. Remove all paint build up. (See fig 8)
b. The 4 poppet holes must be clear. (See fig 9)
c.
Stem must be free to float in poppet. (See fig 10)
d. Stem must slide through cage bore with slight
resistance (due to seal).
e. Rear seal must look clean and in position in the
bore. (See fig 6)
f.
If any of the above cannot be rectified, replace
the air valve (See Replacing Air Valve p10).
8. Replace spring ensuring the end with the plastic
bearing pad goes in first. (See fig 5)
9. Insert air valve assembly into gun and carefully feed
over the spring and through the rear seal. (See fig
11)
10. Tighten air valve assembly using fingers first, and
then tighten with SN-28 (14mm) Spanner. (See figs
12 & 3)
11. Replace trigger. (See figs 2 & 1)
12. If there is an air leak through the gun, the air valve
may need replacing (See Replacing Air Valve).
© 2008 ITW Finishing Systems and Products
9
Replacing Air Valve
Reasons to replace air valve:
A) Air leak through the gun.
B) Air valve not operating correctly.
1. Remove trigger using SPN-8 or TORX (T20) key
provided in the kit. (See figs 13 & 14)
2. Unscrew air valve using SN-28 (14 mm) Spanner. (See
fig 15)
3. Remove air valve by gripping the stem. (See fig 16)
4. Remove spring with spring pad. (See fig 17)
5. Hook out rear seal using Service Tool (56). (See figs
18 & 19)
6. Clean air valve bores in gun body with the brush
supplied in the kit.
7. Place new rear seal onto Service tool (56); grooves
must fit in service tool form. (See fig 20)
8. Push rear seal firmly into hole up to shoulder, using
Service tool. (See figs 21 & 22)
9. Insert new spring, ensuring the end with the plastic
bearing pad goes in first. (See fig 17)
10. Insert air valve assembly into gun and carefully feed
over the spring and through the rear seal. (See fig 23)
11. Tighten air valve assembly using fingers first, then
tighten with SN-28 (14 mm) Spanner. (See figs 24 &
15)
12. Replace trigger. (See figs 14 & 13)
10
© 2008 ITW Finishing Systems and Products
Parts Replacement/Maintenance
NEEDLE PACKING
REPLACEMENT INSTRUCTIONS
13. Remove trigger using SPN-8 or TORX (T20) driver. (See figs
25 & 26)
14. Remove fluid adjusting knob and needle spring with spring
pad from gun. (See figs 27 & 28)
15. Remove fluid needle from gun body. (See fig 29)
16. Loosen and remove packing nut using SPN-8 Key or a
straight blade screwdriver. (See figs 30 & 31)
17. Discard old packing and packing spring if replacing. Clean
packing if reusing. Also clean packing spring and nut. (See
fig 32).
18. Re-assemble the packing, (See fig 32). Assemble into
gunbody by hand (see fig 33) and then tighten. (See figs 30
and 31)
19. Insert fluid needle all the way into gun body seating in fluid
nozzle (See fig 34).
20. Insert needle spring, spring pad, and fluid adjusting knob.
(See figs 28 & 27). Reinstall trigger. (See figs 25 & 26).
21. Trigger gun fully and screw in fluid adjusting knob until it
stops. Back it off 1/2 turn and gun will have full needle
travel.
22. Trigger gun several times to verify correct operation.
FLUID SUPPLY INSERT
The fluid insert and seal are NOT replaceable.
Do not remove these parts.
No maintenance is required for these parts other than regular
cleaning.
SPREADER VALVE ASSEMBLY
REPLACEMENT/MAINTENANCE
The spreader valve assembly can be replaced if damaged.
Remove using SN-28 (14 mm) Spanner (See figs 35 & 36). The
internal seal can be replaced and is included in the PRO-415-1
Gun Rebuild Kit.
© 2008 ITW Finishing Systems and Products
11
Parts Replacement/
Maintenance
SPRAY HEAD SEAL
REPLACEMENT
1. Remove air cap and retaining ring. (See fig 37)
2. Remove fluid adjusting knob, spring, and spring pad. (See
figs 38 & 39)
3. Remove fluid needle from gun body. (See fig 40)
4. Remove fluid nozzle using SN-28 (10 mm) ring Spanner,
and the Front Plate. (See figs 41, 42 & 43)
5. Remove Spray Head. (See fig 44).
6. Clean Spray Head with a soft brush (See fig 45).
7. Remove Spray Head seal using a small screwdriver or
pick. (See fig 46)
8. Clean front of gun if required, using a soft brush, as well
as the Spray Head, fluid nozzle, air cap, and retaining ring.
(See fig 47)
9. Place a new Spray Head Seal onto the front of the gun,
making sure the flat on the seal is aligned with the flat in
the gun. (See fig 48).
10. Fit the Front Plate onto the Spray Head, fit Spray Head to
the Gunbody, ensuring the flat on the underside of the
Spray Head locates with the flat in the Gun Body. Fit Fluid
Nozzle, Air Cap, and Retaining Ring. Torque the Fluid
Nozzle to 14–16 nm. Don’t over torque the fluid nozzle.
(See figs 44, 43, 42, 41 and 37)
11. Insert Fluid Needle all the way into the Gun Body, seating
in the Fluid Nozzle. (See fig 40)
12. Reassemble Needle Spring, Spring Pad, and Fluid
adjusting Knob. (See figs 39 & 38)
13. Trigger gun fully and screw in Fluid Adjusting Knob until it
stops. Back it off 1/2 turn and gun will have full needle
travel.
14. Trigger gun several times to verify correct operation.
12
© 2008 ITW Finishing Systems and Products
Parts Replacement/Maintenance
Chart 1 – Air Caps
PART No. FOR AIR
CAP
TECHNOLOGY
MARKING ON AIR
CAP
PROC-120-C1-K
CONVENTIONAL
PROC-120-C2-K
CONVENTIONAL
AIR FLOW
(L/min)
C1
RECOMMENDED
INLET PRESSURE
(bar)
2.5 – 3.0
250 - 300
C2
2.5 - 4.0
255 - 400
NOTE: When removing air cap from retaining ring, don’t remove the Slip Ring (2) or Retaining Ring Seal (5) from the
Retaining Ring. Damage to the parts may occur. Slip ring and Retaining Ring seal are not available as replacements.
Simply wipe parts clean and reassemble with new or clean air cap.
Chart 2 – Fluid Nozzle Range & Fluid Needle
PART No. ON FLUID
NOZZLE
PART No. NEEDLE
PROC-220-14-K
GFGPRO-320-K
PROC-220-16-K
PROC-220-18-K
NOTE: When replacing the fluid nozzle or fluid needle, replace both at the same time. Torque to 18–20 nm (13–15 ftlbs). Don’t over tighten the fluid nozzle. Use SN-28 10mm Spanner supplied with the gun and check with a torque
wrench.
ACCESSORIES
DGi Digital
Pressure Gauge
DGI-501-BAR
Gun Stand
GFV-50-F
Spanner
SN-28-K
MC-1-K50
600 cc Mixing
Cups pack of 50
Torx driver
SPN-8-K2
10m x 8mm
bore rubber air
hose with ¼
fittings
H-6065-B (BSP)
H-6065-N (NPS)
MPV Swivel
MPV-60-K3
Pack of four
QD fittings
MPV-463
Cleaning Brush
4900-5-1-K3
© 2008 ITW Finishing Systems and Products
13
Troubleshooting Possible Problems in Operation
CONDITION
CAUSE
CORRECTION
Heavy top or
bottom
pattern
Horn holes plugged.
Clean. Ream with non-metallic point.
Obstruction on top or bottom of fluid
nozzle.
Cap and/or nozzle seat dirty.
Left or right side horn holes plugged.
Dirt on left or right side of fluid nozzle.
Clean.
Clean.
Clean. Ream with non-metallic point.
Clean.
Heavy right or
left side pattern
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 nozzle. 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. Also check for dried paint just inside the cap center hole opening; remove by washing
with solvent.
2. If the defect is not inverted, it is on the fluid nozzle. Clean nozzle. If problem persists, renew nozzle.
Heavy
centre
pattern
Split spray
pattern
Spreader adjustment valve set too
low.
Turn out counter clockwise to
achieve correct pattern.
Atomising pressure too low.
Increase pressure.
Material too thick.
Thin to correct consistency.
Air pressure too high.
Reduce at regulator or gun handle.
Fluid adjusting knob turned in too far.
Turn out counter clockwise to
achieve correct pattern.
Spreader adjusting valve set too high.
Jerky or fluttering spray
Paint bubbles in cup
Fluid leaking or dripping from cup lid
Turn in clockwise to achieve correct
pattern.
Loose or damaged fluid nozzle/seat
Tighten or replace
Loose or broken cup fluid nipple
Tighten or replace cup
Material level too low
Refill
Container tipped too far
Hold more upright
Obstruction in fluid passage
Back flush with solvent
Loose fluid needle packing nut
Tighten
Damaged fluid needle packing
Replace
Fluid nozzle not tight.
Cup lid loose.
Fluid nozzle not tight. Tighten to 14–
16 nm (10-12 ft-lbs).
Push in or replace.
Dirty cup or lid.
Clean.
Cracked cup or lid.
Replace cup and lid.
14
© 2008 ITW Finishing Systems and Products
Troubleshooting Possible Problems in Operation (cont)
Starved spray pattern
Excessive overspray
Dry spray
Fluid leaking from
packing nut
Fluid leaking or dripping
from front of gun
Fluid dripping or leaking
from bottom of cup
Runs and sags
© 2008 ITW Finishing Systems and Products
Inadequate material flow
Wind fluid adjusting knob out or
change to larger fluid nozzle size
Blocked vent in Cup lid
Clean lid and unblock vent
Low atomisation air pressure
Increase air pressure and rebalance
gun.
Air pressure to high.
Reduce air pressure.
Gun too far from work surface.
Adjust to correct distance.
Air pressure too high.
Reduce air pressure.
Gun too far from work surface.
Adjust to correct distance.
Gun motion too fast.
Slow down.
Fluid flow too low.
Wind out needle adjusting screw or
use larger nozzle size.
Packing worn.
Replace.
Fluid nozzle or fluid needle worn or
damaged.
Replace fluid nozzle and fluid needle.
Foreign matter in fluid nozzle.
Clean.
Fluid needle dirty or stuck in needle
packing
Clean
Wrong size fluid needle or fluid nozzle.
Replace fluid nozzle and fluid needle.
Cup loose on gun.
Tighten
Cup fluid inlet seat dirty.
Clean.
Too much material flow.
Turn fluid adjusting knob clockwise
or switch to smaller fluid nozzle and
fluid needle size.
Material too thin.
Mix correctly or apply light coats.
Gun tilted on an angle, or gun motion
too slow.
Hold gun at right angle to work and
adapt to correct gun technique.
15
WARRANTY
This product is covered by ITW Finishing Systems and Products Limited one year warranty.
ITW Finishing Systems and Products
Ringwood Road,
Bournemouth,
BH11 9LH, UK
Tel. No. (01202) 571111
Telefax No. (01202) 581940,
Website address http://www.devilbisseu.com
ITW Finishing Systems and Products is a Division of ITW Ltd. Reg. Office:
Admiral House,
St Leonard’s Road,
Windsor,
Berkshire,
SL4 3BL,
UK. Registered in England: No 559693 Vat No 619 5461 24
16
© 2008 ITW Finishing Systems and Products
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