1、March 26, 20031SUBJECT 7700-2-30OUTLINE OF INVESTIGATIONFORPORTABLE PNEUMATIC TOOLS; PART 2: PARTICULAR REQUIREMENTSFOR NAILERS, STAPLERS AND OTHER FASTENING TOOLSIssue Number: 2MARCH 26, 2003Summary of TopicsThe second issue of the Outline of Investigation for Portable PneumaticTools; Part 2: Parti
2、cular Requirements for Nailers, Staplers and OtherFastening Tools has been published to correct typographical errors in thefirst issue.COPYRIGHT 2001, 2003 UNDERWRITERS LABORATORIES INC.MARCH 26, 2003SUBJECT 7700-2-302No Text on This PageCONTENTSFOREWORD 41 Scope .52 Components 53 Undated References
3、 54 Units of Measurement .55 Glossary .56 General Requirements .67 General Notes on Tests .68 Marking 69 Instructions .710 Electrical Circuits 811 Rotating Output 812 Surface Temperatures 813 Accessibility of Moving Parts 814 Mechanical Strength .815 Construction .816 Noise Emission .1117 Resistance
4、 to Corrosion .1118 Accessories and Attachments 11MARCH 26, 2003 SUBJECT 7700-2-30 3FOREWORDA. This Outline of Investigation contains basic requirements for products covered by UnderwritersLaboratories Inc. (UL) under its Follow-Up Service for this category within the limitations given below andin t
5、he Scope section of this Outline of Investigation. They are subject to revision as further experience andinvestigation may show is necessary or desirable.B. The observance of these requirements by a manufacturer is one of the conditions of the continuedcoverage of the manufacturers product.C. A prod
6、uct which complies with the text of this Outline of Investigation will not necessarily be judged tocomply with the Outline of Investigation if, when examined and tested, it is found to have other featureswhich impair the level of safety contemplated by these requirements.D. A product that contains f
7、eatures, characteristics, components, materials, or systems new or differentfrom those covered by the requirements in this Outline of Investigation, and that involves a risk of fire orof electric shock or injury to persons shall be evaluated using appropriate additional component andend-product requ
8、irements to maintain the level of safety as originally anticipated by the intent of thisOutline of Investigation. A product whose features, characteristics, components, materials, or systemsconflict with specific requirements or provisions of this Outline of Investigation does not comply with thisOu
9、tline of Investigation. Revision of requirements shall be proposed and adopted in conformance with themethods employed for development, revision, and implementation of this Outline of Investigation.E. UL, in performing its functions in accordance with its objectives, does not assume or undertake tod
10、ischarge any responsibility of the manufacturer or any other party. The opinions and findings of ULrepresent its professional judgement given with due consideration to the necessary limitations of practicaloperation and state of the art at the time the Outline of Investigation is processed. UL shall
11、 not beresponsible to anyone for the use of or reliance upon this Outline of Investigation by anyone. UL shall notincur any obligation or liability for damages, including consequential damages, arising out of or inconnection with the use, interpretation of, or reliance upon this Outline of Investiga
12、tion.F. Many tests required by the Outline of Investigations of UL are inherently hazardous and adequatesafeguards for personnel and property shall be employed in conducting such tests.MARCH 26, 2003SUBJECT 7700-2-3041 ScopeThis Section of Part 1 is applicable except as follows:Modify 1.1 as follows
13、:The term tools is replaced with nailers, staplers and other fastener driving tools.2 ComponentsThis Section of Part 1 is applicable.3 Undated ReferencesThis Section of Part 1 is applicable.4 Units of MeasurementThis Section of Part 1 is applicable.5 GlossaryThis Section of Part 1 is applicable exce
14、pt as follows:Add definitions:5.101 ACTUATION SYSTEMS:a) SINGLE An actuation system in which the trigger has to be actuated for each drivingoperation.b) CONTINUOUS An actuation system in which the driving operations are carried out for aslong as the trigger remains actuated. No safety yoke is presen
15、t.c) CONTACT An actuation system in which both the trigger and the safety yoke have to beactuated for each driving operation, with the order of actuation not being specified. The drivingoperations occur if either the trigger remains activated and the safety yoke is activatedthereafter, or vice versa
16、.d) CONTACT, CONTINUOUS An actuation system in which both the trigger and the safetyyoke have to be actuated, with the order of actuation not being specified, and in which thedriving operations continue to take place for as long as the trigger and the safety yoke remainactuated.e) SEQUENTIAL, SINGLE
17、 An actuation system in which the trigger and the safety yoke haveto be actuated in such a way that one single driving operation is initiated by the trigger, onlyafter the safety yoke has been applied to the workpiece. Thereafter, any further drivingoperations are initiated only after the trigger ha
18、s been returned to the starting position.MARCH 26, 2003 SUBJECT 7700-2-30 5f) SEQUENTIAL, FULL An actuation system in which the trigger and the safety yoke areinterconnected in such a way that one single driving operation is initiated by the trigger, onlyafter the safety yoke has been applied to the
19、 workpiece. Thereafter, any further drivingoperations are initiated only after both the trigger and safety yoke have been returned to thestarting position.5.102 FASTENER A nail, staple, pin, brad, screw used as a nail, sleeve or other fastening devicethat is designed and manufactured for use in the
20、tools within the scope of this outline.5.103 LIGHT-DUTY TOOL A tool meeting all of the following:a) A tool not capable of driving fasteners sized No. 18 ASWG (0.0475 inch diameter) orgreater;b) A tool not capable of driving a fastener greater than 25.4 mm (1 in) long;c) A tool with a maximum rated a
21、ir pressure not exceeding 100 psi.5.104 SAFETY YOKE An operating control element or assembly on the tool, intended to be actuatedby contact with the material to be fastened.5.105 TRIGGER The control device of the tool used to supply energy to the driving mechanism.6 General RequirementsThis Section
22、of Part 1 is applicable.7 General Notes on TestsThis Section of Part 1 is applicable.8 MarkingThis Section of Part 1 is applicable except as follows:8.1 Items (e) and (j) are not applicable.Add paragraphs:8.101 The tool or magazine shall be marked to identify the size or designation of the fasteners
23、 acceptablefor use with the tool.8.102 A tool capable of contact actuation shall be marked with: WARNINGRisk of Injury to Persons.Do not make contact with safety tip when not driving fasteners.Exception: The term safety tip may be replaced by another term. The term shall be defined in theinstruction
24、 manual.MARCH 26, 2003SUBJECT 7700-2-3068.103 WARNINGRisk of Injury to Persons. Do not place finger on trigger when not driving fasteners.8.104 WARNINGRisk of Injury to Persons. Disconnect tool from air source before makingadjustments, loading or unloading, clearing jams or leaving work area.9 Instr
25、uctionsThis Section of Part 1 is applicable except as follows:9.2.3 Under Personal Safety, items (i), (j) and (k) are not applicable.Replace 9.2.3, Tool use and care, item (d), as follows:d) WARNING Disconnect the tool from the air source before making adjustments,doing tool maintenance, clearing ja
26、ms, touching the safety yoke, leaving work area,loading, or unloading the tool. Such precautionary measures reduce the risk of injury topersons.Note 1: The term safety yoke may be replaced with another term that has the same meaning.Note 2: The words touching the safety yoke are not applicable for a
27、 single actuation system.Add item to 9.2.3, under Tool use and care:g) Use only those fasteners listed in the Accessories section of this manual. Fastenersnot identified for use with this tool by the tool manufacturer are able to result in a risk of injuryto persons or tool damage when used in this
28、tool.Note: The word manufacturer may be replaced by the manufacturers name.Add items to 9.2.3, under Personal Safety:h) Do not attach the hose or tool to your body. Attach the hose to the structure to reducethe risk of loss of balance if the hose shifts.i) Always assume that the tool contains fasten
29、ers. Do not point the tool toward yourself oranyone whether it contains fasteners or not.j) WARNING Do not nail on top of another nail. This is able to cause the nail to bedeflected and hit someone, or cause the tool to react and result in a risk of injury to persons.k) WARNING Remove finger from th
30、e trigger when not driving fasteners. Never carry thetool with finger on trigger, the tool is able to fire a fastener.Note: The term fastener may be replaced with a specific fastening device name such as, nail, staple,ornail or staple as applicable.MARCH 26, 2003 SUBJECT 7700-2-30 710 Electrical Cir
31、cuitsThis Section of Part 1 is applicable.11 Rotating OutputThis Section of Part 1 is not applicable.12 Surface TemperaturesThis Section of Part 1 is applicable except as follows:Add paragraph:12.101 Normal load is the load placed on the tool while driving the maximum size fastener for 60operations
32、per min while connected to an air source equal to the maximum rated pressure.Reloading time shall not exceed 15 s.13 Accessibility of Moving PartsThis Section of Part 1 is applicable.14 Mechanical StrengthThis Section of Part 1 is applicable except as follows:Add an Exception to 14.1.1.1 as follows:
33、Exception: Roofing nailers and roofing staplers shall be subjected to three drops each for a total of ninedrops on a concrete surface from a height of 4 m (13.1 ft).15 ConstructionThis Section of Part 1 is applicable except as follows:Replace 15.5 and 15.6 as follows:15.5 A tool shall be equipped wi
34、th a trigger.15.6 The trigger shall:a) Be positive On-Off type,b) Return to the stop position when released,c) Be constructed and located to reduce the risk of unintentional operation, andCompliance is checked by inspection and by the following test:The tool is to be placed in any position anticipat
35、ed in normal use. The tool is to be positionedon a horizontal surface. Accessories shall be taken into account in determining compliance withthis requirement.MARCH 26, 2003SUBJECT 7700-2-308The edge is not taken into account as part of the horizontal surface.Unintentional operation of the trigger sh
36、all not occur.d) Be mechanically durable.Compliance is checked by inspection and by the following test:One trigger shall be subjected to 50,000 operations of opening and closing at a rate not lessthan 10 cycles per minute.Following the test the tool is to be operated at maximum rated air pressure. T
37、he trigger shalloperate normally.Add paragraph:15.6.1 The trigger shall be constructed such that the part of the trigger that has the greatest travel shallnot be less than 6.4 mm (0.25 in) before tool actuation can occur.Exception: This requirement does not apply to a tool equipped with a trigger sy
38、stem that automaticallylocks in the off position when the trigger is released so that two motions are required to actuate the trigger.Replace 15.7 with the following:15.7 Neither a trigger nor a safety yoke shall be capable of being locked in the on position.Compliance is checked by inspection and b
39、y manual test.15.10 Add the following sentence after the first sentence in the Compliance statement:A tool employing a safety yoke shall be tested with the safety yoke bypassed and again with the triggerbypassed.15.14 This paragraph of Part 1 is not applicable.Add paragraphs:15.101 A tool shall not
40、be provided with a belt suspension hanger.15.102 A tool other than a light-duty tool shall have a safety yoke in addition to a trigger.15.103 Other than specified in 15.102 and 15.104, a tool actuation system shall be single actuation,contact actuation, single sequential actuation, or full sequentia
41、l actuation. A tool shall not be capable ofcontinuous actuation or continuous contact actuation.Compliance is checked by inspection.MARCH 26, 2003 SUBJECT 7700-2-30 915.104 A tool capable of driving fasteners greater than 127 mm (5 in) long shall only be capable of fullsequential actuation and shall
42、 employ a safety yoke that reduces the risk of unintentional drivingoperations.Compliance is checked by applying 1.5 times the tool weight, but not less than 1.5 kg (3.3 lb). The safetyyoke shall not engage to initiate driving operations.15.105 A sharp edge or point of a fastener shall not protrude
43、and, as far as is compatible with the useand functioning of the tool, shall be arranged or enclosed to provide, in normal use, protection against arisk of injury to persons.Compliance is checked by inspection.15.106 With reference to 15.102, a tool having a safety yoke shall comply with 15.107 15.11
44、0.15.107 Upon removal of the tool from the workpiece, the safety yoke shall return to its starting position.Compliance is checked by inspection and a manual test.15.108 An air-operated safety yoke shall operate under abnormal conditions.Compliance is checked by connecting the tool to an air source s
45、et at 80 percent of the rated air pressureor at 80 percent of the minimum pressure of the rated air-pressure range. The safety yoke shall return toits starting position.15.109 A safety yoke shall be constructed to reduce the risk of unintentional actuation of the tool. A safetyyoke:a) Shall not exte
46、nd more than 18 mm (0.7 in) from the exit point of the fastener for contactactuation systems or for a tool capable of driving fasteners greater than 127 mm (5 in) long, orb) Shall not extend more than 30 mm (1.2 in) from the exit point of the fastener for all othertools.Compliance is checked by insp
47、ection.15.110 A safety yoke shall be mechanically durable.Compliance is checked by inspection and by the following test:One safety yoke shall be subjected to 50,000 operations of opening and closing at a rate not less than 10cycles per minute.Following the test, the tool is to be operated at maximum
48、 rated air pressure. The safety yoke shall operatenormally.MARCH 26, 2003SUBJECT 7700-2-301016 Noise EmissionThis Section of Part 1 is applicable.17 Resistance to CorrosionThis Section of Part 1 is applicable.18 Accessories and AttachmentsThis Section of Part 1 is applicable.MARCH 26, 2003 SUBJECT 7700-2-30 11MARCH 26, 2003SUBJECT 7700-2-3012No Text on This Page
