Sealey SA790 User manual

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.
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
pWARNING! Ensure Health & Safety, local authority, and general workshop practice regulations are adhered
to when using this equipment.
pWARNING! Disconnect from air supply before refilling, servicing or performing maintenance.
3Maintain the nail gun in good condition (use an authorised service agent).
3Replace or repair damaged parts. Use genuine parts only. Non-authorised parts may be dangerous and
will invalidate the warranty.
3Use in suitable clean and tidy work area, free from unrelated materials and ensure there is adequate lighting.
pWARNING! Always wear approved eye and/or face and hand protection when operating the nail gun.
3Remove ill fitting clothing. Remove ties, loose jewellery, and contain and/or tie back long hair.
3Wear appropriate protective clothing and keep hands and body clear of working parts.
3Maintain correct balance and footing. Ensure the floor is not slippery and wear non-slip shoes.
3Keep children and unauthorised persons away from the working area.
3Check moving parts alignment on a regular basis.
3Ensure workpiece is secure before operating the nail gun. Never hold a workpiece by hand.
3When the nail gun is put down during pauses in operation ensure that the trigger catch slide is not
depressed by the weight of the nail gun or by placing the nail gun in a restricted position that could put
pressure on the trigger catch slide.
3During extended breaks in operation disconnect the nail gun from the air supply.
pWARNING! Ensure correct air pressure is maintained and not exceeded. Recommended pressure 60-100psi.
3Keep air hose away from heat, oil and sharp edges. Check air hose for wear before each use and ensure
that all connections are secure.
3Prolonged exposure to vibration from this nail gun may pose a health risk. It is the owners responsibility to
correctly assess the potential hazard and issue guidelines for safe periods of use and offer suitable protective equipment.
7DO NOT point the nail discharge outlet at yourself or anyone else. Do not point at animals.
7DO NOT use any power source except an air compressor.
7DO NOT operate the nail gun near any flammable substance or on any container that once contained a
flammable substance.
7DO NOT use the nail gun for a task it is not designed to perform.
7DO NOT operate nail gun if any parts are damaged or missing as this may cause failure and/or personal injury.
7DO NOT carry the nail gun by the hose, or yank the hose from the air supply.
7DO NOT place the nail gun close to your face and do not point at other persons or animals.
7DO NOT operate nail gun when you are tired, under the influence of alcohol, drugs or intoxicating medication.
7DO NOT carry the nail gun with your finger on the trigger.
7DO NOT direct air from the air hose at yourself or others.
3When not in use, disconnect from air supply and store in a safe, dry, childproof location.
INSTRUCTION MANUAL FOR:
AIR OPERATED NAIL GUN
MODEL NO. SA790
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 liability is accepted for incorrect use of this equipment. WARRANTY: Guarantee is 12
months from purchase date, proof of which will be required for any claim. INFORMATION: Call us for a copy of our latest catalogue
and promotions on 01284 757525 and leave your full name and address including your postcode.
SA790 - 1 - 170603
ITEM PART NO. DESCRIPTION
1SA790.01 Bolt M5 x 20
2SA790.02 Spring washer
3 SA790.03 Cylinder cap
4SA790.04 Seal washer
5SA790.05 Compressed spring
6SA790.06 O-ring 24.8 x 3.5
7SA790.07 O-ring 31.2 x 2.5
8SA790.08 Head valve piston
9SA790.09 O-ring 13.7 x 2.4
10 SA790.10 Piston seal
11 SA790.11O-ring 4 x 1.8
12 SA790.12 Collar
13 SA790.13 O-ring 30 x 1.8
14 SA790.14 O-ring 42.6 x 2.35
15 SA790.15 Cylinder
16 SA790.16 O-ring 29.7 x 3.55
17 SA790.17 Piston unit
18 SA790.18 D-ring 21 x 3
19 SA790.19 Bumper
20 SA790.20 Gun body
ITEM PART NO. DESCRIPTION
41 SA790.41 Cover plate
42 SA790.42 Pin 1.5 x 10
43 SA790.43 Bolt M4 x 8
44 SA790.44 Driver guide
45 SA790.45 Slice
46 SA790.46 Fixed magazine
47 SA790.47 Movable magazine
48 SA790.48 Fixing screw
49 SA790.49 Support seat
50 SA790.50 Bolt M4 x 12
51 SA790.51 Stopper
52 SA790.52 Stopper pipe
53 SA790.53 Compress spring
54 SA790.54 Fixing bolt
55 SA790.55 Spring lever
(magazine catch)
56 SA790.56 Bolt M4 x 16
57 SA790.57 Stopper
58 SA790.58 Nut M4
59 SA790.59 Hand rubber grip
60 SA790.60 O-ring 36.5 x 3.55
61 SA790.61 End cap
62 SA790.62 Air inlet
ITEM PART NO. DESCRIPTION
21 SA790.21 Grommet
22 SA790.22 Valve sleeve
23 SA790.23 O-ring 11 x 1.2
24 SA790.24 Spring
25 SA790.25 Trigger valve stem
26 SA790.26 O-ring 8 x 1
27 SA790.27 O-ring
28 SA790.28 Valve seat
29 SA790.29 O-ring 11.2 x 1.85
30 SA790.30 Pin
31 SA790.31 Trigger
32 SA790.32 E-ring
33 SA790.33 Safety plate
34 SA790.34 Pin 2.5 x 16
35 SA790.35 Safety guide
36 SA790.36 Spring
37 SA790.37 Safety catch
38 SA790.38 Spacer
39 SA790.39 Release handle
40 SA790.40 Release button
Issue No: 1
Issue Date: 170603
SA790
01284 757500
01284 703534
E-mail: [e-mail]
Sole UK Distributor
Sealey Group,
Bury St. Edmunds, Suffolk.
Web address: www.sealey.co.uk

2. INTRODUCTION & SPECIFICATION
3.1. Air Supply
3.1.1. Before connecting to an air supply ensure that the trigger release slide is not depressed (see fig 1).
3.1.2. You will require an air pressure between 60-100psi.
3.1.3. pWARNING! Ensure the air supply is clean and does not exceed 100psi while operating the nail gun.
Too high an air pressure and unclean air will shorten the product life due to excessive wear and may be
dangerous, causing damage and/or personal injury.
3.1.4. Drain the air tank daily. Water in the air line will damage the nail gun and will invalidate your warranty.
3.1.5. Clean air inlet filter weekly. Recommended hook-up procedure is shown in fig 2.
3.1.6. 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 bore.
3.1.7. Keep hose away from heat, oil and sharp edges. Check hoses for wear, and make certain that all
connections are secure.
3.2. Couplings.
Vibration may cause failure if a quick change coupling is connected directly
to the air nail gun. To overcome this, connect a leader hose to the nail gun. A
quick change coupling may then be used to connect the leader hose to the
air line recoil hose. See fig 2 & 3.
3. PREPARING NAIL GUN FOR USE
4. OPERATING INSTRUCTIONS
5. MAINTENANCE
p p
WARNING! Ensure you read, understand and apply safety instructions before use.
4.1 Load the magazine before connecting the airline. To open the magazine, hold the nail gun vertically with
one hand, then with the thumb of your other hand, press the magazine catch upwards and slide the
magazine backwards and open with the forefinger of the same hand. Place a stick of nails into the open
magazine chamber ensuring that all nails have their points resting on the bottom of the chamber.
4.2 Slide the magazine cover shut until it clicks into place behind the catch.
4.3 Before connecting to an air supply, ensure that the trigger catch release slide is not depressed. Connect
the air line to the nail gun as described in Section 3.
4.4 The operating trigger is normally locked and cannot be used until the trigger release slide is
depressed. This happens automatically as you position the nail gun.
4.5 The trigger release slide can be seen protruding downwards just in front of the nail outlet. ( see fig 1 )
Place the tip of the slide onto the material to be nailed and press downwards to bring the nail outlet
into contact with the surface. As the slide retracts the trigger will become free.
4.6 Depress the trigger to fire one nail. To fire another nail, release the trigger, reposition the nail gun at
the next required nailing point and depress the trigger again. Repeat as necessary.
4.7 If you need to put the nail gun down during the course of working ensure that the trigger slide catch is not
depressed against any object.
4.8 When the work is complete or when you have paused for any length of time, disconnect the nail gun from
the air line.
p p
WARNING! Should a blockage occur, disconnect nail gun from the air supply immediately.
4.9 Open the magazine (as described above)
4.10 Access the blockage by unclipping the driver guide front-plate (see fig 1) using the release catch provided.
4.11Remove the nail and any foreign matter found within the driver guide.
4.12 Replace the driver guide front-plate and set the catch.
4.13 Ensure that all parts of the nail gun are secure and correctly positioned, then reconnect the air supply.
fig 2
Professional air nailers with lightweight aluminium bodies and rubber grip handles. Both models incorporate a
safety trigger device to prevent accidental firing of nails and a quick jam release mechanism in the head.
Supplied in blow mould case with oil and starter pack of nails.
We, the sole importer into the UK, declare that the product listed here is in conformity with the
following EEC standards and directives. The construction files for this product are held by the
Manufacturer and may be inspected, by a national authority, upon request to Jack Sealey Ltd.
For Jack Sealey Ltd. Sole importer into the UK
of Sealey Power Products.
Air Operated Nail Gun
Model: SA790
98/37/EC Machinery Directive
93/68/EEC Marking Directive
16TH JUNE 2003
Declaration of Conformity
Signed by Mark Sweetman
fig 3
fig 1
pWARNING! Disconnect nail gun from air supply before refilling with nails, servicing or performing
maintenance. Replace or repair damaged parts.
Use genuine parts only. Non-authorised parts may be dangerous and will invalidate the warranty.
5.1. Lubricate the air nail gun daily with a few drops of the air tool oil supplied, dripped into the air inlet before
use. ( To re-order air tool oil use Sealey part Nos. ATO500S or ATO1000S.)
5.2. Clean the nail gun after use.
5.3. Loss of power or erratic action may be due to the following:
a) Excessive drain on the air line. Moisture or restriction in the air pipe. Incorrect size or type of hose
connectors. To remedy check the air supply and follow instructions in chapter 3.
b) Grit or gum deposits in the nail gun may also reduce performance. Flush the nail gun out with gum
solvent oil or an equal mixture of SAE No 10 oil and kerosene. Allow to dry before use.
If you continue to experience problems, contact your local Sealey service agent.
5.4. For a full service contact your local Sealey service agent.
5.5. When not in use, disconnect from air supply, clean nail gun and store in a safe, dry, childproof location.
5.6 On a weekly basis check the security of the hex bolts holding the driver guide plate in place and tighten if
necessary (see fig 1).
TRIGGER
MAGAZINE
MAGAZINE
CATCH
NAIL OUTLET
TRIGGER
RELEASE
SLIDE
AIR INLET
DRIVER GUIDE
FRONT-PLATE
RELEASE CATCH
DRIVER GUIDE
PLATE HEX BOLTS
Model: SA790
Capacity: 10-32mm 18Ga
Operating pressure: 60-100psi
Air inlet: 1/4 BSP
Weight: 1.2kg
SA790 - 1 - 170603
SA790 - 1 - 170603
Specification:
(Model shown is SA790)