Sealey HVLP-79 User manual

PARTS FOR:
HVLP SPRAY GUN
Model: HVLP-79
Thank you for purchasing a Sealey product. Manufactured to a high standard this product will, if used
according to these instructions and properly maintained, give you years of trouble free performance.
INSTRUCTIONS FOR:
HVLP SPRAY GUN
Model: HVLP-79
IMPORTANT:PLEASE READ THESE INSTRUCTIONS CAREFULLY. NOTE THE SAFE OPERATIONAL
REQUIREMENTS, WARNINGS AND CAUTIONS. USE THIS PRODUCT CORRECTLY AND WITH CARE FOR THE
PURPOSE FOR WHICH IT IS INTENDED. FAILURE TO DO SO MAY CAUSE DAMAGE AND/OR PERSONAL
INJURY AND WILL INVALIDATE THE WARRANTY. PLEASE KEEP INSTRUCTIONS SAFE FOR FUTURE USE.
1. SAFETY INSTRUCTIONS
3Familiarise yourself with the application, limitations and potential hazards peculiar to the spray gun.
pWARNING! Disconnect the spray gun from the air supply before changing accessories, servicing or
performing any maintenance.
3Maintain the spray gun in good condition (use an authorised service agent).
3Replace or repair damaged parts. Use recommended parts only. Unauthorised parts may be dangerous
and will invalidate the warranty.
3Keep the spray gun clean for best and safest performance.
3Ensure that the compressed air system can supply the spray gun air consumption (550l/min - 19.4cfm).
3Wear approved safety respiratory protection and safety eye goggles.
3If spraying isocyanate based finisher, wear approved respirator/clean air breathing apparatus and cover
exposed skin with latex gloves and an impervious hooded coverall.
3Remove ill fitting clothing. Remove ties, watches, rings and other loose jewellery and tie back long hair.
3Locate the spray gun in a suitable work area. Keep area clean and tidy and free from unrelated materials
and ensure that there is adequate ventilation and lighting.
3Keep children and unauthorised persons away from the work area.
3When not in use, ensure that the air supply is turned off.
3Avoid unintentional operation of spray gun.
7DO NOT point spray gun at yourself, other persons or animals.
7DO NOT direct air from the air hose at yourself, other persons or animals.
7DO NOT carry the spray gun by the hose, or yank the hose from the air supply.
7DO NOT exceed the maximum air pressure of 75psi.
7DO NOT use the spray gun for any purpose other than that for which it is designed.
7DO NOT allow untrained persons to operate the spray gun.
7DO NOT get the spray gun wet or use in damp or wet locations or in areas where there is condensation.
7DO NOT operate the spray gun if any parts are missing or damaged as this may cause failure and/or
personal injury.
2. DESCRIPTION & SPECIFICATIONS
HVLP-79 - 1 - 200802
01284 757500
E-mail: [e-mail]
Web: www.sealey.co.uk
01284 703534
Sole UK Distributor,
Sealey Group,
Bury St. Edmunds, Suffolk.
NOTE: It is our policy to continually improve products and as such we reserve the right to alter data, specifications and component parts without prior notice.
IMPORTANT: No responsibility is accepted for incorrect use of this product.
WARRANTY: Guarantee is 12 months from purchase date, proof of which will be required for any claim.
INFORMATION: For a copy of our latest catalogue and promotions call us on 01284 757525 and leave your name and address, including postcode.
Item Part No. Description
1HVLP79.01 Retaining ring - available only
in Set 08, 10 or 14
2HVLP79.02 Air cap - available only in Set
08, 10 or 14
3HVLP79.03 Fluid nozzle and gasket
(includes item 4) - available
only in Set 08, 10 or 14
4HVLP79.04 Gasket - available only in Set
08, 10 or 14
5HVLP79.05 Lock screw
6HVLP79.06 Dowel pin
7HVLP79.07 Baffle
8HVLP79.08 Lock nut
9HVLP79.09 Fluid connector
10 HVLP79.10 Screw
11 HVLP79.11 Trigger
12 HVLP79.12 Stud
13 HVLP79.13 Gasket
14 HVLP79.14 Bushing
15 HVLP79.15 Fluid Needle (available only in
Set 08, 10 or 14)
16 HVLP79.16 Spring
17 HVLP79.17 Adjusting screw
18 HVLP79.18 Side port control assembly -
contains items 19, 20, 21 & 22
19 HVLP79.19 Retaining ring
20 HVLP79.20 Bushing
21 HVLP79.21 O-Ring
22 HVLP79.22 Side port stem assembly
23 HVLP79.23 Air valve assembly - contains
items 24, 25, 26, 27, 28, 29 & 30
24 HVLP79.24 Snap ring
Item Part No. Description
25 HVLP79.25 Washer
26 HVLP79.26 "U" Cup seal
27 HVLP79.27 Air valve bushing
28 HVLP79.28 Air valve
29 HVLP79.29 Spring
30 HVLP79.30 Gasket
31 HVLP79.31 Air pressure elbow
32 HVLP79.32 Steel ball
33 HVLP79.33 Spring
34 HVLP79.34 O-Ring
35 HVLP79.35 Air pressure plug
36 HVLP79.36 Packing
37 HVLP79.37 Packing screw
38 HVLP79.38 Gun body
39 HVLP79.39 Nipple
40 HVLP79.40 Air supply tube (Available only with item 51)
41 HVLP79.41 Fluid tube (Available only with item 51)
42 HVLP79.42 Yoke (Available only with item 51)
43 HVLP79.43 Cam (Available only with item 51)
44 HVLP79.44 Lid (Available only with item 51)
45 HVLP79.45 No-drip elbow assembly (Available only with item 51)
46 HVLP79.46 No-drip tube
47 HVLP79.47 Gasket
48 HVLP79.48 Locking washer
49 HVLP79.49 Nut
50 HVLP79.50 Cup
51 HVLP79.51 Lid assembly, contains items 40, 41, 42, 43, 44, 45 &52
52 HVLP79.52 Adapter (Available only with item 51)
HVLP79.Set.08 Set up, 0.8mm, contains items 1, 2, 3 & 15
HVLP79.Set.10 Set up, 1.0mm, contains items 1, 2, 3 & 15
HVLP79.Set.14 Set up, 1.4mm, contains items 1, 2, 3 & 15
Issue No: 1
Date Issued: 200802
The HVLP spray gun has an anodised body which resists corrosion and has a low affinity for paint, making this
unit easy to clean. The gun also has adjustable paint and fan width controls. HVLP (High Volume, Low Pressure)
uses lower air pressure but at a far higher throughput. The result of this is that very much more of the paint stays
on the panel and less disappears into the atmosphere. Suitable for heavy commercial use and particularly suitable
for applying commercial vehicle primers. Well balanced gun with positive pressure suction pot for smooth material
flow. Supplied with 1.0mm set-up. 0.8 and 1.4 set-ups available separately.
SPECIFICATIONS
Standard set-up . . . . . . . . . . . . . . . . . . . . .1.0mm
Available set-ups . . . . . . . . . . . . . . . . .0.8, 1.4mm
Working pressure range .50 - 75psi (3.5 - 5.0 bar)
Max. safe pressure . . . . . . . . . . . . . .75psi (4 bar)
Air consumption . . . . . . . . . . . . . . . . . . . . .19cfm

3. AIR SUPPLY
Recommended supply system is shown below.
3.1. Ensure that the spray gun trigger is in the "off" position before connecting to the air supply.
3.2. You will require an air pressure between 50 and 75psi, and an air flow according to the specification.
pWARNING! Ensure that the air supply is clean and does not exceed 75psi while operating the spray gun.
Too high an air pressure and/or unclean air will shorten the product life, due to excessive wear, and
may cause damage and/or personal injury.
3.3. Drain the air tank daily. Water in the air line will damage the spray gun and invalidate your warranty.
3.4. Clean compressor air inlet filter weekly.
3.5. Line pressure should be increased to
compensate for unusually long air
hoses (over 8 metres).
The minimum hose diameter should be
1/4 I.D. and fittings must have the
same inside dimensions.
3.6. Keep hose away from heat, oil and
sharp edges. Check hoses for wear,
and make certain that all connections
are secure.
4. OPERATING INSTRUCTIONS
4.1. For best results, handle the gun correctly. It should
be held perpendicular to the surface being sprayed
and moved parallel to it. Start the stroke before
squeezing the trigger and release the trigger before
finishing the stroke. This will give more accurate
control of the gun and the material (see right).
4.2. Spray from a distance of 6 to 10 inches, depending
on the material and the atomizing pressure. The
material deposited should always be even and wet.
Each stroke must overlap the preceding stroke to
obtain a uniform finish. To reduce over-spray and
obtain maximum efficiency, spray with the lowest
possible atomizing air pressure.
4.3. Controlling the fluid and the fan spray:
a) As the width of the spray is altered so the fluid flow
must be adjusted to maintain the same coverage.
Use the fluid control screw (C in Section 6).
b) The direction of the fan spray, either horizontal
or vertical, is adjusted by turning the air cap to
the desired position and then tightening the
retaining ring.
Disconnect form the air supply before attempting any maintenance or cleaning. When reassembling after
maintenance, be sure to take care when screwing parts together. At first screw parts hand tight to avoid
cross-threading. If a part cannot easily be turned by hand, check that you have the correct part, or unscrew,
realign and try again. DO NOT use excessive force when reassembling.
5.1. Spray gun
5.1.1. Immerse the front end of the gun only in solvent until the solvent
just covers the fluid connection.
5.1.2. Use a bristle brush and solvent to wash off accumulated paint.
5. MAINTENANCE & CLEANING
5.1.3. Do not immerse the entire gun in solvent. This will cause lubricants to dissolve and packing to
dry out. Dirty solvent may also clog the narrow passages in the gun.
5.1.4. Wipe the outside of the gun with a dampened solvent rag.
5.1.5. Lubricate the gun daily with a light machine oil. Be sure to lubricate the fluid needle packing, air valve
packing, side port control packing and trigger pivot point. Do not use lubricants containing silicone.
5.1.6. When finished spraying, flush the gun through with clean thinners.
5.2. Air nozzle, fluid nozzle and needle assembly
5.2.1. To clean the nozzles, soak them in solvent to dissolve any dried material then blow them clean with
air. Handle all nozzles carefully and do not make any alterations in the gun.
5.2.2. If you need to probe the holes in the nozzles, be sure to use a tool that is softer than brass; do not
use metal instruments.
5.2.3. Adjust the fluid needle valve so that when the gun is triggered, air flow occurs before fluid flow.
THE PROBLEM THE CAUSE THE SOLUTION
Fluid flow is too high for
the air pressure and flow
Air pressure and flow too
high for fluid flow
Air entering the fluid supply
Horn hole (A) blocked. In
order to check, turn the air
cap 180O, if the faulty pattern
is now upside down the
hole must be cleaned.
Possible paint build-up
between fluid nozzle and
air cap (A).
1. Increase air pressure by adjusting
regulator (A) and increase flow
adjusting regulator (B).
2. Reduce paint flow with regulator (C).
3. Paint may be too thick. If so, dilute it.
1. Reduce air pressure by adjusting
regulator (A).
2. Reduce air flow by adjusting regulator
(B) and increase fluid flow with
regulator (C).
1. Tighten the connection between the
gun and the cup.
2. Tighten fluid nozzle with gun spanner.
3. Check if cup vent hole is blocked.
4. Check if cup is empty.
1. Place the air cap in solvent.
2. Clean hole with compressed air or
with a wooden toothpick.
DO NOT use a metal probe which
will damage the hole.
1. Clean the air cap and the fluid
nozzle, check that they match.
2. Check needle for damage.
6. TROUBLESHOOTING
Poor atomization/heavy centre pattern
Heavy atomization, poor centre pattern
Heavy right or left side pattern
Top heavy or bottom heavy pattern
Intermittent spray pattern
HVLP-79 - 1 - 200802