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TOOL OPERATION

EYE PROTECTION which conforms to ANSI specifications and provides protection against
flying particles both from the FRONT and SIDE should ALWAYS be worn by the operator and
others in the work area when connecting to air supply, loading, operating or servicing this
tool. Eye protection is required to guard against flying fasteners and debris, which could
cause severe eye injury.

The employer and/or user must ensure that proper eye protection is worn. Eye protection
equipment must conform to the requirements of the American National Standards Institute,
ANSI Z87.1 and provide both frontal and side protection.

NOTE: Non-side shielded spectacles and face shields alone do not provide adequate
protection.

CAUTION: Additional Safety Protection will be required in some environments. For
example, the working area may include exposure to noise level which can lead to hearing
damage. The employer and user must ensure that any necessary hearing protection is
provided and used by the operator and others in the work area. Some environments will
require the use of head protection equipment. When required, the employer and user must
ensure that head protection conforming to ANSI Z89.1 is used.

BEFORE HANDLING OR OPERATING THIS TOOL:

I. READ AND UNDERSTAND THE WARNINGS CONTAINED IN THIS MANUAL.

II. REFER TO "TOOL SPECIFICATIONS" IN THIS MANUAL TO IDENTIFY THE 

OPERATING SYSTEM ON YOUR TOOL.

OPERATION

1.   CONTACT TRIP OPERATION:

The CONTACT TRIP is a contact trip that operates in conjunction with the trigger to drive a fastener. There
are two methods of operation to drive fasteners with a contact trip tool.
A. SINGLE FASTENER PLACEMENT: To operate the tool in this manner, first position the contact trip on

the work surface, WITHOUT PULLING THE TRIGGER. Depress the contact trip until the nose touches
the work surface and then pull the trigger to drive a fastener. Do not press the tool against the work 
with extra force. Instead, allow the tool to recoil off the work surface to avoid a second unwanted 
fastener. Remove your finger from the trigger after each operation.

B. RAPID FASTENER OPERATION: To operate the tool in this manner, hold the tool with the contact trip

pointing towards but not touching the work surface. Pull the trigger and then tap the contact trip against
the work surface using a bouncing motion. Each depression of the contact trip will cause a fastener to
be driven.

The operator must not hold the trigger pulled on contact trip tools except during fastening
operation, as serious injury could result if the trip accidentally contacted someone or
something, causing the tool to cycle.

Keep hands and body away from the discharge area of the tool. A contact trip tool may
bounce from the recoil of driving a fastener and an unwanted second fastener may be
driven, possibly causing injury.

2.   SEQUENTIAL TRIP OPERATION:

The SEQUENTIAL TRIP is a contact trip that operates in conjunction with the trigger to drive a fastener.
To operate a sequential trip tool, first position the contact trip on the work surface WITHOUT PULLING
THE TRIGGER. Depress the contact trip and then pull the trigger to drive a fastener. As long as the
contact trip is contacting the work and is held depressed, the tool will drive a fastener each time the trigger
is depressed. If the contact trip is allowed to leave the work surface, the sequence described above must
be repeated to drive another fastener.

Depress To 
Allow Selector 
To Rotate

Sequential Trip Operation

Contact Trip Operation

Summary of Contents for SN2890

Page 1: ...NUAL TO UNDERSTAND AND FOLLOW THE SAFETY WARNINGS AND INSTRUCTIONS KEEP THESE INSTRUCTIONS WITH THE TOOL FOR FUTURE REFERENCE IF YOU HAVE ANY QUESTIONS CONTACT YOUR REPRESENTATIVE OR DISTRIBUTOR SN2890 28º CLIP HEAD FRAMING NAILER OPERATION and MAINTENANCE MANUAL ...

Page 2: ...r s employees are not qualified to advise you on the use of these tools Oral representation will not be binding on the Seller The rights under this limited warranty are to the original purchaser and may not be transferred to the subsequent owner This limited warranty is in lieu of all warranties expressed or implied including warranties of merchantability and fitness for a particular purpose Selle...

Page 3: ...ed repair personnel Service or maintenance performed by unqualified personnel may result in a risk of injury When servicing a tool use only identical replacement parts Use of unauthorized parts may create a risk of injury Know your pneumatic tool Read operator s manual carefully Learn its applications and limitations as well as the specific potential hazards related to this tool Following this rul...

Page 4: ...istance from the tool while tool is in operation as accidental actuation may occur possibly causing injury The operator must not hold the trigger pulled on contact arm tools except during fastening operation as serious injury could result if the trip accidentally contacted someone or something causing the tool to cycle Keep hands and body away from the discharge area of the tool A contact arm tool...

Page 5: ...rect operating pressure for the tool FILTER Dirt and water in the air supply are major causes of wear in pneumatic tools A filter will help to get the best performance and minimum wear from the tool The filter must have adequate flow capacity for the specific installation The filter has to be kept clean to be effective in providing clean compressed air to the tool Consult the manufacturer s instru...

Page 6: ...gger lets the operator choose between from Contact Actuation and Single Sequential Actuation TOOL FREE DRIVE DEPTH ADJUST The tool free depth adjust lets the operator select precise driving depth of the fastener DRY FIRE LOCKOUT The drive fire lockout extends driver life and prevents missing nails REAR LOADING MAGAZINE The rear loading magazine offers quick reloading of fasteners PRODUCT SPECIFICA...

Page 7: ...control of the fastener drive depth from flush with the work surface to shallow or deep countersink First set the air pressure for consistent drive in the specific work Then use the depth adjustment to give the desired depth of drive TO ADJUST FASTENER CONTROL ADJUSTMENT 1 Disconnect the tool from the air supply 2 Turn the depth selector left or right to change the driving depth 3 Reconnect the to...

Page 8: ...ever point the tool at anyone else Never engage in horseplay Never pull the trigger unless nose is directed at the work Always handle the tool with care Do not pull the trigger or depress the trip mechanism while loading the tool 1 Insert nails into track of magazine 2 Pull pusher all the way back and then allow it to push nails forward to driving position ...

Page 9: ...T To operate the tool in this manner first position the contact trip on the work surface WITHOUT PULLING THE TRIGGER Depress the contact trip until the nose touches the work surface and then pull the trigger to drive a fastener Do not press the tool against the work with extra force Instead allow the tool to recoil off the work surface to avoid a second unwanted fastener Remove your finger from th...

Page 10: ...MUST NOT CYCLE Release the trigger The trigger must return to the trigger stop on the frame C Pull the trigger and press the contact trip against the work surface THE TOOL MUST NOT CYCLE D With finger off the trigger press the contact trip against the work surface Pull the trigger THE TOOL MUST CYCLE IN ADDITION TO THE OTHER WARNINGS CONTAINED IN THIS MANUAL OBSERVE THE FOLLOWING FOR SAFE OPERATIO...

Page 11: ...PROCEDURE FOR SEALS When repairing a tool make sure the internal parts are clean and lubricated Use a small amount of oil on all moving surfaces and pivots After reassembly add a few drops of oil through the air line fitting before testing AIR SUPPLY PRESSURE AND VOLUME Air volume is as important as air pressure The air volume supplied to the tool may be inadequate because of undersized fittings a...

Page 12: ...te Air pressure too low Check air supply equipment Skipping fasteners intermittent feed Worn bumper Replace bumper Tar dirt in driver channel Disassemble and clean nose and driver Air restriction inadequate air flow through quick disconnect socket and plug Replace quick disconnect fittings Worn piston O ring Replace O ring check driver Tool dry lacks lubrication Use Lubricant Low air pressure Chec...

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