Makita AN621 User manual

Construction Coil Nailer
0.44 - 0.83 MPa
I65 - 120 PSIG)
MODEL AN621
200, 250, 300 pcs.
45 mm, 50 mm, 57 mm, 65 mm
11-3/4", 2". 2-114". 2-112")
INSTRUCTION MANUAL
SPECIFICATIONS
Air pressure I Applicable length I Nail capacity
Min. hose diameter I Dimensions IL x W x H) I Net weight
6,5 mm 1114,,)
I
310 mm x 133 mm x 305 mm
(12.3/16" x 5.1/4" x 12") I kg 16'' Ibs)
* 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.
SAVE THESE INSTRUCTIONS FOR FUTURE REFERENCE.

IMPORTANT
SAFETY INSTRUCTIONS
WARNING: WHEN USINGTHIS TOOL, BASICSAFETY PRECAUTIONS
SHOULD ALWAYS BEFOLLOWED
TO REDUCETHE RISK OFPERSONAL
INJURY, INCLUDINGTHE 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 glassestoprotectyour
eyes from dust or nail injury. The safety
glasses shouldconform with the require-
mentsof ANSI 287.
1 - 1979.
WARNING:
n
It isan employer’s responsibilityto enforce
the useof safety eye protectionequipment
bythe tooloperators andby otherpersons
in the immediate working area.
Wear hearing protection to protect your
ing. Sleevesshouldbe buttonedor rolled
up. No necktie should be worn.
ears against exhaust noise and head pro-
~ protection
tection. Also wear lightbutnotloosecloth-
v-,, Hearing
protection
Rushing the job or forclngthe tool isdan-
gerous. Handle the tool carefully.
Do not
operatewhen under the influenceof alco-
hol, drugs or the like.
2

General Tool Handling Guidelines:
1. Always assume that the tool contains fasteners.
2. Do notpointthetooltowardyourself oranyonewhether itcontainsfastenersor not.
3. Do not actuate 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 load the tool with fasteners when any one of the operating controls is
8. Do not operate the tool with any power source other than that specified inthe
activated.
tool operatingkafety instructions.
An improperlyfunctioning toolmust notbe
used.
Sparks sometimes fly when the tool is
used. Do not use the tool near volatile,
flammablematerialssuchasgasoline,thin-
ner, paint, gas, adhesives, etc.; they will
igniteand explode, causing seriousinjury.
The area shouldbesufficiently illuminated
to assure safe operations.
The areashouldbeclearandlitter-free. Be
especially careful to maintaingoodfooting
and balance.
3

Only those involved inthe work should be
in thevicinity. Children especially mustbe
kept away at all times.
There may belocal regulations concerning
noise which must be complied with by
keeping noise levels within prescribed
limits.
In certaincases, shuttersshouldbe
used to contain noise.
*Do not play with the contact element: it
prevents accidental discharge, so it must
bekept on
and notremoved. Securing the
trigger inthe
ON positionisalsovery dan-
gerous. Neverattempt tofastenthetrigger.
Do not operate a tool if any portionof the
tool operatingcontrols isinoperable, dis-
connected, altered, or not working prop-
erly.
Operate the tool within the specified air
pressure of
0.44 - 0.83 MPa (65 - 120
PSIG)for safetyandlonger tool life. Do not
exceed the recommended max. operating
pressure of
0.83 MPa (120 PSIG). The tool
shouldnotbeconnectedtoasourcewhose
pressurepotentlallyexceeds
1.37 MPa (200
PSIG).
Shutter
I
-~
Contact element
0.83 MPa 0.83 MPa
(120 PSIG) (120 PSIG)
4

*Never use the tool with other than com-
pressedair. If bottledgas(carbondioxide,
oxgen, nitrogen, hydrogen,air, etc.) or com-
bustible gas (hydrogen, propane, acety-
lene, etc.)
is usedas apowersourcefor this
tool,thetoolwillexplodeandcauseserious
injury.
Alwayscheck the toolfor itsoverallcondi-
tion and loose screws before operation.
Tighten as required.
Makesureallsafety systemsare in working
order before operation. The tool must not
operateifonly the trigger
is pulledor if only
thecontactelement ispressedagainst the
wood.
It mustwork onlywhenbothactions
areperformed. Test for possiblefaulty oper-
ation with nails unloaded.
COMPRESSED
AIR
5

Make sure that the trigger islockedwhen
the change lever isset to the LOCK posi-
tion.
Change lever
Trigger lock
Check walls, ceilings, floors, roofing and
the likecarefullytoavoidpossibleelectrical
shock, gasleakage, explosions,etc. caused
bystrikinglivewires, conduitsorgaspipes.
Useonly nailsspecified in thismanual. The
useof any other nailsmaycause malfunc-
tion of the tool.
6

Makesure noone is nearby before nailing.
Neverattempt to nailfrom boththe inside
andoutside at the sametime. Nails may
rip
through andlor fly off, presenting a grave
danger.
*Watch your footing and maintain your
balancewiththetool. Makesurethere isno
onebelowwhenworking
in highlocations,
and secure the air hoseto prevent danger
if there issudden jerking or catching.
L
On rooftopsand other high locations, nail
asyou moveforward.
It iseasy to loseyour
footing ifyou nailwhile inching backward.
When nailing against perpendicular sur-
face, nail from the top
to the bottom. You
can perform nailing operations with less
fatigue by doing
so.
A nailwill be bent or the tool can become
jammed if you mistakenly nail on top of
another nail or strike a knot
in the wood.
The nail may be thrown and hit someone,
or the tool itself can react dangerously.
Place the nails with care.
7

Do not leavethe loadedtoolorthe air com-
pressor under pressurefor alongtimeout
inthe sun. Be sure that dust, sand, chips
andforeignmatterwill notenterthetool
in
the place where you leave It setting.
Do notpointthe ejection portat anyone in
the vicinity. Keephandsandfeetaway from
the ejection port area.
*When the air hose is connected, do not
carrythe toolwithyour fingeronthetrigger
or hand it to someone In this condition.
Accidental firing can be extremely dan-
gerous.
Handle the tool carefully as there is high
pressureinsidethetoolthat can
be danger-
ousif acrack Iscaused by roughhandling
(dropping or striking).
Do not attempt to
carve or engrave on the tool.
8

Stop nailingoperations immediately ifyou
noticesomething wrong or out of theordi-
nary with the tool.
Alwaysdisconnect the airhoseandremove
all of the nails:
1. When unattended.
2. Before performing any maintenance or
3. Before cleaning a jam.
4. Beforemovingthe tool toanew location.
repair.
Perform cleaning and maintenance right
after finishing the job. Keep the tool in
tip-top condition. Lubricatemovingpartsto
prevent rusting and minimize friction re-
latedwear. Wipe
off alldust from the parts.
When not operating the tool, always lock
the trigger by turning the change lever to
the LOCK position.
I I
*
9

Do notoperate this tool if it does not con-
tain a legible WARNING LABEL.
Do not modify tool without authorization
from Makita.
Ask Makita’sFactoryorAuthorized service
centerfor periodical inspectionof thetool.
To maintain product SAFETY and RELIA-
BILITY, maintenanceand repairsshould be
performedbyMakitaAuthorizedorFactory
Service Centers, always using Makita re-
placement parts.
SAVE THESE INSTRUCTIONS.
I
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10

TOOL INSTALLATION INSTRUCTIONSAND US€
Selecting compressor
The air compressor must comply with the require-
ments of ANSI 819.3 - 1981.
Select a compressorthat hasample pressureandair
output to assure cost-efficientoperation. The graph
shows the relationbetween nailingfrequency, applica-
ble pressure and compressor air output. Thus, for
example, if nailing takes place at a rate of approxi-
mately 40 times per minuteat a compressionof 0.49
MPa (70 PSIG). acompressor withanair output over
2 ft3/minuteis required. Pressure regulators must be
usedto limit air pressure tothe rated pressure of the
toolwhereair supply pressureexceedsthe tool’s rated
pressure. Failuretodo so may resultinseriousinjury
to tool operator or persons in the vicinity.
Selecting air hose
Usean air hose as largeand as short as possibleto
assurecontinuous,efficient nailingoperation. With an
air pressure of 0.49 MPa (70 PSIG), anair hosewith
an internaldiameter of over 6.5 mm (1/4”) anda length
of less than 20 m (6.6 ft.) isrecommendedwhen the
interval between each nailing is 0.5 seconds. Air
supply hosesshallhavea minimum workingpressure
rating of 1.06 MPa (150 PSIG) or 150 percent of the
maximum pressureproducedinthesystem whichever
is higher.
CAUTION:
24
c
.-
E
83
a
a2
b
ii
00
.-
a
-
-
m
tl
5
10 20 30 40 50 60
Nailingfrequency (timeshnin
I
Low air output of the compressor, or alongor smaller diameter air hoseinrelationtothenailingfrequency
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 possibleto the
tool. Adjust the oiler so that one drop of oil will be
provided for every 50 nails.
When an air set is not used, oil the tool with pneu-
matic tooloilbyplacing 2 (two) or 3 (three)dropsinto
the air fitting. This should be done before and after
use. For proper lubrication, the tool must be fired a
couple of timesafter pneumatic tooloil is introduced.
I Pneumatic I
11

Selecting wirelplastic collated coil
Accordingtothe typeof collatedcoil,set the change
lever. lever
Wire -
collated 111
Loading nailer
CAUTION:
*Always lock the trigger and disconnect the hose before loading the nailer.
Make sure that nails are collated firmly and are not bent.
Select nails suitable for your work. Pull the lever of
the magazine cap and open the magazine cap.
Liftandturnthecoilsupportplateto set it to the gradu-
ations of the magazine. If thetoolisoperatedwiththe
coilsupportplateset to thewrongstep, poor nailfeed
or malfunction of the tool may result.
Placethe nailcoilover the coilsupport plate. Uncoil
enough nails to reach the feed claw. Place the first
nailin the driver channeland the second nailinthe
feed claw. The nailheads must be in the slot in the
feeder body. Placeother uncoilednailson feeder body
andattachthem to the magnet.Besurethat nailsare
in the feeder claw and are not bent. Then close the
magazine cap.
I
. Plastic
collated
coil
L
Magazinecap Lever
coilsupport plate
Magnet -/ Feeder body
12

Adjusting depth of nailing
CAUTION:
Always lock the trigger and disconnect the hose before adjusting the depth of nailing.
To adjust thedepth of nailing, turntheadjuster so that
thearrow above the adjuster will point to the number
indicatedon the adjuster. The depth of nailing isthe
deepestwhen thearrow points to the number 1. It will
become shallower as the arrow points to higher
number. The depthcan bechangedinapprox. 1.0 mm
(1132”) incrementsper graduation.If nailscannot be
driven deep enough even when the arrow points to
the number 1, increasethe air pressure. If nails are
driven too deep even when the arrow points to the
number 8, decreasethe air pressure. Generallyspeak-
ing, the tool servicelife will be longer when the tool
is usedwith lower air pressure and the adjuster set
to a lower number.
Connecting air hose
Lock thetrigger. Sliptheair socketof the air hoseonto
the air fitting on the nailer.Besurethat the air socket
locks firmly into position when installedonto the air
fitting. A hosecoupling must be installedon or near
thetool insuchaway thatthe pressurereservoir will
dischargeat the time the air supply coupling is dis-
connected.
Operation
1) To drivea nail,you may placethe contact element
against the workpiece and pull the trigger, or
2) Pullthe trigger first andthen placethecontactele-
ment against the workpiece.
No. 1 methodisfor intermittentnailing, when you wish
to drive a nail carefully and very accurately.
No. 2 method is for continuous nailing.
Trigger
Contact
elernenl
13

Continuous nailing and trigger locking method
For continuous nailing, set the change lever to the
”Continuous Nailing” position. For locking the trig-
ger, set the change lever to the ”Lock” position.
Always make sure that the change lever is properly
set to the position.
CAUTION: I
Operating the tool without nails shortens the life of the tool and should be avoided.
Air exhaust
Air exhaust directioncan bechangedeasilyby rotat-
ingthe exhaust cover. Change it when necessary.
.. ..
.I
Jammed nailer
CAUTION:
Always lockthetrigger, disconnectthe hose and removethe nailsfrom the magazinebeforecleaning
a jam.
When the nailer becomes jammed, proceed as fol-
lows:
Openthedoor andmagazinecapandremovethenail
coil.Inserta smallrodorthelikeintotheejection port
and tap it with a hammer to drive out the nail jam-
mingthe ejectionport. Reset the nail coil and close
the magazinecap and door.
mr Small rod
Hook
The hook is convenient for hanging the tool tempo-
rarily. Thishookcan beinstalledoneither side of the
tool.
CAUTION:
=Always lock the trigger and disconnect the hose when hanging the tool using the hook.
=Alwaystighten the hook securing bolt firmly. Loose bolt may cause air leakage from the tool.
14

*Never hang the tool on a waist belt or the like.
Dangerous accidental firing may result.
Nails
Handlenailcoilsand their box carefully. If the nail coils
have beenhandledroughly,they may be out of shape
or their connector breaks, causing poor nail feed.
I
15

MAINTENANCE
CAUTION:
Always besurethat the triggerislockedand theair hoseisdisconnectedfrom thetool beforeattempting
to perform inspection or maintenance.
Maintenance of nailer
Alwavs checkthe tool for itsoverallconditionand
loess screws before operation. Tighten as re-
quired.
Make sure all safety systems are in working order beforeoperation. The tool must not operate if only
the trigger is pulledor if only the contactelement is pressedagainstthe wood. It must work only when
both actions are performed. Test for possible faulty operation with nails unloaded.
I II
I I1
Entering dirt or foreign matter into the tool may cause damage to the tool.
Make sure that the trigger is locked when the
change lever is set to the LOCK position.
16

When not in use, lock the trigger and disconnet
the hose. Then cap the air fitting with the cap.
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.
Irondustthat adhereto the magnet can be blown
off by using an air duster.
Maintenance of compressor, air set and air hose
After operation, alwaysdrain the compressor tank and the air filter. If moistureisallowed to enter the
tool. it mav result in Door Derformance and Dossible tool failure.
- Drain cock
1- Air litter
17

Check regularly to seeifthereissufficientpneumatic
oil inthe oiler of the air set. Failureto maintainsuffi-
cient lubrication will cause O-rings to wear quickly.
Keep the air hose away from heat (over 6OoC, over
14OOF), away from chemicals(thinner, strongacidsor
alkalis). Also, route the hose away from obstacles
which it may becomedangerouslycaught on during
operation. Hoses must also be directed away from
sharp edges and areaswhich may lead to damage
or abrasionto the hose.
To maintainproductSAFETY and RELIABILITY, maintenanceand repairsshould be performedby Makita
Authorized or Factory Service Centers, always using Makita replacement parts.
18

i
MAKITA LIMITED ONE YEAR WARRANTY
! Warranty Policy
Every Makita tool is thorou ly inspected and tested before leaving the factory. It is warranted to
be free of defects from worfkanship and materials for the period ofONE YEAR from the date of
original purchase. Should any trouble develop during this one-year period, return the COMPLETE
tool, freight prepaid, to one 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:
repairshave been made or attempted by others:
repairs are required because ofnormal wesr and tear:
The tool has been abused, misused or improperly maintained;
alterationshave been made to the tool.
IN NO EVENT SHALL MAKITA BE LIABLE FOR ANY INDIRECT INCIDENTAL OR CON-
I APPLIESBOTH DURING AND AFTER THE TERM OFTHISWARRANTY.
SEQUENTIAL
DAMAGES FROM THE SALE OR USE OF THE PROD^. THIS DISCLAIMER
MAKlTA DISCLAIMS LIABILITY FOR ANY IMPLIED WARRANTIES INCLUDING IMPLIED
WARRANTIES
OF “MERCHANTABILITY” AND “FITNESS FOR A’ SPECIFIC PURPOSE,”
AFTER THEONE-YEAR TERM
OF THISWARRANTY.
This Warranty
gives you specific 1
state to state. Some states do no
damages,
so the above limitation
limitation on how long an implied
Makita Corporation
3-11 -8, Sumiyoshi-cho,
Anjo, Aichi 446-8502
Japan
884369-8
PRINTED IN JAPAN
2000-1 1 N