Makita AN922 User manual

Pneumatic Framing Nailer
540 mm x 376 mm x 108 mm
(21-114” x 14-3/4” x 4-1/4”)
446 mm x 376 mm x 108 mm
(17-112” x 14-3/4” x 4-114”)
64 - 74 pes'
- 84 pes'
AN922 4.5
- 8.5 kgflcm2G
(65
- 120 PSIG) 50
mm - 90 mm
(2” - 3-1/2”) 8.5
mm (5116”)
AN942
MODEL AN922
MODEL AN942
3.8 kg (8.4 Ibs)
INSTRUCTION MANUAL
4ml AN922
LJ AN942
SPECIFICATIONS
I Min. hose diameter I Net weight
Dimensions
I Nail length I Nail capacity I (L x H x W)
Model I Air pressure
* Manufacturer reserves the right to change specifications without notice.
* Note: Specifications may differ from country to country.
WARNING: For your personal safety, READ and UNDERSTAND before using.
CAW= TUECC I~ICTRIIrTinhic Erin EIITI IRE RCCCRCMPC

IMPORTANT
SAFETY INSTRUCTIONS
WARNING: WHEN USING THIS TOOL, BASIC SAFETY PRECAUTIONS
SHOULD ALWAYS BE FOLLOWED
TO REDUCE THE RISK OF PERSONAL
INJURY, INCLUDING THE FOLLOWING:
READ ALL INSTRUCTIONS.
.For personal safety and proper operation and
maintenance of the tool, read this instruction
manual carefully before using the tool.
Always wear safety glassesto protect your eyes
fromdust or nailinjury. Thesafetyglassesshould
conformwiththe requirementsof ANSI
287.1 -
1979.
WARN I N G :
It isan employer’s responsibility to enforce the
useof safetyeye protectionequipmentbythetool
operatorsandbyother persons
in the immediate
working area.
.Wear hearing protection to protect your ears
againstexhaust noiseandheadprotection. Also
wear
light butnotlooseclothing. Sleevesshould
be buttoned or rolled
up. No necktie should be
worn.
Rushingthejob or forcing thetool isdangerous.
Handle the tool carefully.
Do not operate when
underthe influenceof alcohol, drugsorthe like.
2

*General Tool Handling Guidelines:
1. Always assume that the tool contains fasteners.
2. Do notpoint the tool towardyourself or anyonewhether it containsfastenersor not.
3. Do not activate the tool unless the tool is placed firmly against the workpiece.
4. Respect the tool as a working implement.
5. No horseplay.
6. Do not hold or carry the tool with a finger on the trigger.
7. Do not loadthetoolwithfastenerswhenany one of the operatingcontrols isactivated.
8. Do not operate the tool with any power source other than that specified inthe tool
__
operating/safety instructions.
*Animproperlyfunctioningtoolmustnot beused.
.Sparks sometimesfly when the tool isused.
Do
notusethetool nearvolatile, flammable materials
such as gasoline, thinner, paint, gas, adhesives,
etc.; they willigniteandexplode, causingserious
injury.
I
M
*The area should be sufficiently illuminated to
assure safe operations.
The area should be clear and litter- free. Be
especially careful to maintain good footing and
balance.
I II

.Only those involved in the work should bein the
vicinity. Childrenespeciallymustbekeptaway at
all times.
.There may belocalregulationsconcerning noise
which must be complied with by keeping noise
levelswithin prescribed limits.
In certain cases,
shutters should be used to contain noise.
Do notplaywiththe contact element: it prevents
accidental discharge,
so it must be kept onand
not removed. Securing the trigger
in the ON po-
sition is also very dangerous. Never attempt to
fasten the trigger.
Do not operate a tool if any portion of the tool
operating controls is inoperable, disconnected,
altered, or not working properly.
.Operate thetoolwithinthespecifiedair pressure
of
4.5 - 8.5 kgf/cm'G (65 - 120 PSIG) for safety
and longer tool life.
Do not exceed the recom-
mended max. operating pressure of
8.5
kgf/cm'G (120 PSIG). The tool should not be
connectedtoasourcewhose pressurepotentially
exceeds
14.0 kgf/cm*G (200 PSIG).
Shutter
0.5 kgf/cm2 G 8.5 kgf/cm2G
I (120 PSIG) (120 PSIG)
4

*Never use the tool with other than compressed
air. If bottled gas (carbon dioxide, oxgen, nitro-
gen, hydrogen, air, etc.) or combustible gas
(hydrogen, propane, acetylene, etc.) is used as
apowersourcefor thistool, thetoolwillexplode
and cause serious injury.
*Always check the tool for its overall condition
and loose screws before operation. Tighten as
required.
Makesure all safetysystemsare in workingorder
before operation. The tool must not operate if
onlythetrigger ispulledor if onlythecontactarm
is pressed against the wood. It must work only
when both actions are performed. Test for pos-
siblefaulty operationwith nailsunloadedandthe
pusher in fully pulled position.
COMPRESSED
AIR
c

*Make sure that the trigger is locked when the
change lever is set to the LOCK position.
I
*Checkwalls, ceilings, floors, roofingandthe like
carefully to avoid possibleelectricalshock, gas
leakage, explosions, etc. caused by striking live
wires, conduits or gas pipes.
Live wire
I Gas
Use only nailsspecifiedinthis manual. The use
of any other nailsmay cause malfunctionof the
tool.
I
Do not permitthoseuninstructedtousethetool.
6

Makesure noone is nearbybeforenailing. Never
attempt to nailfrom boththe insideand outside
at the same time. Nails may
rip through and/or
fly
off, presenting a grave danger.
*Watch your footing and maintain your balance
with the tool. Make sure there is no one below
when working
in high locations, and secure the
air hose to prevent danger if there is sudden
jerking or catching.
On rooftopsandother high locations, nailasyou
moveforward.
It iseasy toloseyour footingifyou
nailwhileinchingbackward. When nailingagainst
perpendicular surface, nail from the top to the
bottom.You can performnailingoperationswith
less fatigue by doing
so.
*A nailwill bebentorthetoolcan becomejammed
if you mistakenly nail on top of another nail or
strikeaknot
in thewood. The nailmaybethrown
and
hit someone, orthetoolitself can react dan-
gerously. Place the nails with care.
7

Do notleavethe loadedtoolortheaircompressor
under pressurefor alongtime out
in thesun. Be
surethat dust, sand, chipsandforeignmatterwill
not enter the tool
in the place where you leave
it setting .
*Do not point the ejection port at anyone in the
vicinity. Keep hands and feet away from the
ejection port area.
I
..
Whenthe air hoseisconnected,do notcarry the
tool with your finger
on the trigger or hand it to
someone inthis condition. Accidentalfiring can
be extremely dangerous.
Handlethetoolcarefullyasthereishighpressure
inside the tool that can be dangerous if a crack
is caused by rough handling (dropping or strik-
ing).
Do not attempt to carve or engrave onthe
tool.
8

Stopnailingoperationsimmediately if you notice
somethingwrongorout of the ordinary with the
tool.
.Always disconnect the air hoseand removeallof
the nails:
1. When unattended.
2. Beforeperformingany maintenanceor repair.
3. Before cleaning a jam.
4. Before moving the tool to a new location.
Perform cleaning and maintenance right after
finishing the job. Keep the tool
in tip-top condi-
tion. Lubricate moving parts to prevent rusting
and minimize friction related wear. Wipe
off all
dust from the parts.
.When not operating the tool, always
lock the
trigger by turning the change lever to the LOCK
position.
Trigger
n

*Do not operate this tool if it does not contain a
legible WARNING LABEL.
*Do not modify tool without authorization from
Makita.
Ask Makita’s Factoryor Authorizedservicecenter
for periodical inspection of the tool.
To maintain product SAFETY and RELIABILITY,
maintenanceandrepairsshould beperformedby
Makita Authorized or Factory Service Centers,
always using Makita replacement parts.
SAVE THESE INSTRUCTIONS.
10

TOOL INSTALLATION INSTRUCTIONS AND USE
Selecting compressor
The air compressor must comply with the requirements of
Selecta compressorthat hasample pressureandair output
to assure cost-efficient operation. The graph shows the
relationbetweennailingfrequency, applicablepressureand
compressor air output. Thus, for example,
if nailing takes
place at a rate of approximately
40 times per minute at a
compression of
6 kgf/cm2G(85 PSIG), a compressor with
an air output over 3 ft3/minute is required. Pressure
regulators must be used to limit air pressure to the rated
pressureof the tool where air supply pressureexceedsthe
tool’s ratedpressure.Failureto do
so may result inserious
injury to tool operator or persons in the vicinity.
ANSI B19.3
- 1981.
Selecting air hose
Usean air hose as largeand as short as possibleto assure
continuous,efficient nailing operation.With an air pressure
of 5 kgf/cm2G(70 PSIG), an air hose with an internal
diameter of over
8.5 mm (5/16”) and a length of less than
20 m (6.6 ft.) is recommended when the interval between
each nailing is
0.5 seconds. Air supply hoses shall have a
minimum working pressure rating of 10.7 kgf/cm2G (150
PSIG) or
150 percent of the maximum pressure produced
in the system whichever is higher.
Nailing frequency (timedmin.)
CAUTION:
Lowair outputof thecompressor,or alongor smallerdiameterair hoseinrelationtothe nailingfrequency
may cause a decrease in the driving capability of the tool.
Lubrication
To insure maximum performance, install an air set (oiler,
regulator, air filter) as close as possible to the tool. Adjust
the oiler
so that one drop of oil will be provided for every
30 nails.
When n ir et is not used,
oil the tool with pneumatictool
oil by placing
2 (two) or 3 (three) drops into the air fitting.
This should be done beforeand after use. For proper lubri-
cation, the tool must be fired a couple of times after pneu-
matic tool oil is introduced.
Pneumatictooloil
11

Nose adapter
CAUTION:
Always lock the trigger and disconnect the hose before installing or removing the nose adapter.
When nailingworkpieces with easily-marredsurfaces, use
the nose adapter. It is stored in the holder on the reverse
side of the magazine.
Attach the noseadapterto the contact arm(see right).When
not in use, store the nose adapter in the holder on the
reverse side of the magazine to keep it from being lost.
Loading nailer
CAUTIO N :
Holder
Noseadapter
4
Contactarm
6'
Noseadapter
Always lock the trigger and disconnect the hose before loading the nailer.
Select nails suitable for your work.
Insert strip of nails into the magazine.
Pull the pusher lever to the rear to engage the pusher to
the last nail.
12

Unloading nailer
CAUTION :
Always disconnect the air hose before unloading the nailer.
Pull the pusher lever to the rear. Return the pusher lever
back while keeping the pusher depressed to disengage it
from the strip of nails.
I I
Depressthe nailstopperand removethe strip of nails from
the magazine.
Adjusting depth of nailing
CAUTION:
Pusher lever
Nail stopper
Always lock the trigger and disconnect the hose before adjusting the depth of nailing.
To adjust the depth of nailing, turn the adjuster so that the
arrow abovethe adjusterwill pointto the number indicated
on the adjuster. The depth of nailing is the deepest when
the arrow points to the number
1. It will become shallower
as the arrow points to higher number. The depth can be
changed in approx. 1.0 mm
(1132”) incrementsper gradua-
tion. If nailscannot be driven deep enough even when the
arrow points to the number
1, increasethe air pressure. If
nailsare driven too deepevenwhen the arrow pointsto the
number
9, decrease the air pressure. Generally speaking,
the tool service life will be longer when the tool is usedwith
lower air pressure and the adjuster set to a lower number.
Connecting air hose
Lock the trigger. Slip the air socket of the air hose onto the
air fitting onthe nailer. Besure that theair socket locksfirmly
into position when installed onto the air fitting. A hose
coupling must be installedon
or nearthetool insuch away
that the pressurereservoirwill discharge at the time the air
supply coupling is disconnected.
Air socket \

Operation
CAUTION:
Make sure all safety systems are in working order before operation.
1) To drive a nail, you may place the contact element against the workpiece and pull the trigger, or
2) Pull the trigger first and then place the contact element against the workpiece.
No.
1 method is for intermittent nailing, when you wish to drive a nail carefully and very accurately.
No.
2 method is for continuous nailing.
1
// // /
For No. 1 method, set the change lever to the
“Intermittent Nailing” position.
For No.
2 method, set the change lever to the
“Continuous Nailing” position. After using the
change lever to change the nailing method,
alwaysmakesurethat thechange lever is properly
set
to the position for the desired nailing method.
12 /
I-
Continuous &.& nailing
@!- Change lever
Trigger lock
Anti dry fire mechanism
This tool is equipped with an anti dry fire mechanism. When there are a few nails remaining in the
magazine, the contact arm will be locked in the undepressed position to prevent the tool from being
activated. Load more nails to resume operation.
Jammed nailer
CAUTION:
Always lock the trigger, disconnect the hoseand removethe nails from the magazine beforecleaning
a jam.
When the nailer becomes jammed, do as follows:
Insert a small rod or the like into the ejection port and tap it with a hammer to retract the driver. Use
pliers to bend the jammed nail
so that the nail head comes out of the slot in the driver guide. Then
remove the iammed nail.
Hammer
H
Small rod
Ejection port
Driver
14

Nails
Handle nail strips and their box carefully. If the nail strips
have been handled roughly, they may be out of shape or
their connector breaks, causing poor nail feed.
Avoid storing nails
in a very humid or hot place or place
exposed to direct sunlight.
1s

MAINTENANCE
CAUTION:
Always disconnect the hose before attempting
to perform inspection or maintenance.
Maintenance of nailer
Always check thetool for itsoverallcondition and
loose screws before operation. Tighten as re-
quired.
With tool disconnected, makedaily inspection to
assurefree movementof the contactelementand
trigger.
Do not use tool if the contact element or
trigger sticks or binds.
Make sure that the trigger is locked when the
change lever is set to the
LOCK position.
/--f
I
w
16

When the tool is not to be used for an extended period of time, lubricate the tool using pneumatic
tool oil and store the tool in a safe place. Avoid exposure
to direct sunlight and/or a humid or hot
environment.
I
M
Maintenance of compressor, air set and air hose
After operation, always drain the compressor tank and the air filter. If moisture is allowed to enter the
tool, it may result in poor performance and possible tool failure.
1 Drain cock
Check regularly to see if there is sufficient pneu-
maticoil inthe oiler of the air set. Failure
to main-
tain sufficient lubrication will cause O-rings
to
wear quickly.
,-Air filter
Oiler
Pneumaticoil
1
17

Keepthe air hose away from heat (over 60°C, over 14OoF),
away from chemicals (thinner,strong acidsor alkalis).Also,
route the hose away from obstacles which it may become
dangerously caught on during operation. Hoses must also
be directed away from sharp edges and areas which may
lead to damage or abrasion to the hose.
L
To maintainproductSAFETY and RELIABILITY, maintenanceand repairsshouldbe performedby Makita
Authorized or Factory Service Centers, always using Makita replacement parts.
18

(MEMO)
19

MAKmA LIMITED ONE YEAR WARRANTY
Warranty Policy
Every Makita tool is thoroughly inspected and tested before leaving the factory. It is warranted to
be free of defects from workmanship and materials for the period of ONE YEAR from the date of
original purchase. Should any trouble develop during this one-year period, return the COMPLETE
tool, freight prepaid, toone of Makita’s Factory or Authorized Service Centers. If inspection shows
the trouble is caused by defective workmanship or material, Makita
will repair (or at our option,
replace) without charge.
This Warranty does not apply where:
0 repairshave been made or attemptedby others:
0 repairs are required because of normal wear and tear:
0 The tool has been abused, misused or improperly maintained;
0 alterations have been made to the tool.
IN NO EVENT SHALL MAKITA BE LIABLE FOR ANY INDIRECT, INCIDENTAL OR CON-
SEQUENTIAL DAMAGES FROM THE SALE
OR USE OFTHE PRODUCT. THIS DISCLAIMER
APPLIES BOTH DURING AND AFTER THE TERM OFTHISWARRANTY.
MAKITA DISCLAIMS LIABILITY FOR ANY IMPLIED WARRANTIES. INCLUDING IMPLIED
....._._.. ~-.~- -~ ~_~_~~ ~
WARRANTIES OF “MERCHANTABILITY” AI6“FITNESS FOR A’ SPECIFIC PURPOSE,”
AFTER THEONE-YEAR TERM OFTHISWARRANTY.
This Warranty gives you specific legal rights, and you may also have other rights which vary from
state to state. Some states do not allow the exclusion or limitation of incidental or consequential
damages,
so the above limitation or exclusion may not apply to you. Some states do not allow
limitation onhow long an implied warranty lasts,
so the above limitation may not apply toyou.
Makita Corporation
3-11-8, Sumiyoshi-cho,
Anjo, Aichi 446-8502 Japan
884238A065
PRINTED IN JAPAN
1999 - 4 - N