Powermatic COS18 User Manual

OWNER’S MANUAL

Model COS18 Cut-Off Saw

Left-Hand model shown,

with 8' and 4' optional r oller tables

WMH TOOL GROUP

Industrial Machinery Division 427 Sanford Road LaVergne, TN 37086

▪

Ph: 800-248-0144 E-mail : powerm atic@wmhtool gr oup. com M-0460277 10/03 Rev. B www.wmht oolgroup.com

Fax: 800-274-6840

This manual has been prepared for the owner and operators of a Powermatic Model COS18 Cut-Off Saw. Its purpose, aside from proper machine operation, is to promote safety through the use of accepted correct operating and maintenance procedures. Completely read the safety and maintenance instructions before operating or servicing the machine. To obtain maximum life and efficiency from your saw, and to aid in using the machine safely, read this manual thoroughly and follow all instructions carefully.

Warranty & Service

WM H Tool Group warrants every product it sells. I f one of our tools needs service or r epair, one of our Authorized Repai r Stations loc ated throughout the Uni ted States can give you quic k service.

In most cases, any one of these W M H Tool Group Repair Stations can author ize warranty repair, assist you in obtaining parts, or perform routine maintenanc e and major repair on your J E T, Performax, Powermatic or Wilton tools.

For the nam e of an Authorized Repair Station in y our ar ea, call 1-800-274- 6848.

More Information

WM H Tool Group is consistently adding new products to the line. For complete, up-to-date produc t infor mation, c hec k with your local WMH Tool Group distributor or visit wm htoolgroup.com.

Limited Warranty

WM H Tool Group (including JET, Per formax, Powermatic and Wilton brands) m akes every effort to assure that its products meet high quality and durability standards and warrants to the ori ginal retail consumer/purc haser of our products that each product be free from def ec ts in materials and workmanship as foll ows: 1 YEAR LIMITED WARRANT Y ON ALL PRODUCTS UNLESS SPECIFIED OTHERWISE. This warranty does not apply t o defects due directly or indirec tly to m isuse, abuse, negligence or acc idents, normal wear-and-tear, repair or alter ations outside our facilities, or to a lack of maintenance.

WMH TOOL GROUP LIMITS ALL IMPLIED WARRANTIES TO THE PERIOD SPECIFIED ABOVE, FROM THE DATE THE PRODUCT WAS PURCHASED AT RETAIL. EXCEPT AS STATED HEREI N, ANY IMPLIED WARRANTIES OR MERCHANTI B I LI TY AND FITNESS ARE EXCLUDED. SOME STATES DO NOT ALLOW LIMITATIONS ON HOW LONG THE IMPLIED WARRANTY LASTS, SO THE ABOVE LIMITATION MAY NOT APPLY TO YOU. WMH TOOL GROUP SHALL IN NO EVENT BE LIABLE FOR DEATH, INJURIES TO PERSONS OR PROPERTY, OR FOR INCIDENTAL, CONTINGENT, SPECIAL, OR CONSEQUENTIAL DAMAGES ARISING FROM THE USE OF O UR P RODUCTS. 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.

To take advantage of thi s warranty, the product or part must be returned for examination, postage prepaid, to an Authorized Repair Station designated by our office. Proof of purchase date and an expl anation of t he complaint must accompany the merchandise. If our inspection discl oses a def ec t, W M H Tool Group will either repair or r eplace the product, or r efund the purchase pric e if we cannot readily and quickly prov ide a repair or replacement, if you are willing to accept a refund. WMH Tool Group will return repaired product or replacement at our expense, but if i t is determined there is no def ec t, or that the defect result ed from causes not within the scope of our warranty, then the user must bear t he c ost of storing and ret ur ning the product. This warranty gi ves you specific legal r ights; you may also have other ri ghts, whic h vary from state to state.

WM H Tool Group sells through distributors only. WMH Tool Group reserves the right to effect at any tim e, without pri or notice, those alterations to parts, fittings, and accessory equipment which they may deem necessary for any reason whatsoever.

TABLE OF CONTENTS

Safety Rules...............................................................................................................................................4-5

Safety Decals ................................................................................................................................................ 6

Specifications................................................................................................................................................7

Features........................................................................................................................................................8

Receiving......................................................................................................................................................9

Installation & Assembly..................................................................................................................................9

Handwheel............................................................................................................................................. 9

Electrical Connections .........................................................................................................................10

Extension Cords.................................................................................................................................. 10

Dust Collection.................................................................................................................................... 11

Operating Controls...............................................................................................................................11

Installing/Changing Blade ....................................................................................................................11

Air Supply............................................................................................................................................12

Squaring the F ence..............................................................................................................................12

Installing Roller Tables (Optional)........................................................................................................12

8-Foot Table Guide ............................................................................................................ .................. 14

Leveling & Aligning Roller Tables........................................................................................................14

Adjustments................................................................................................................................................. 15

Blade Travel........................................................................................................................................15

Clamp Height Adjustment....................................................................................................................15

Belt Replacement................................................................................................................................16

Operation....................................................................................................................................................16

Maintenance................................................................................................................................................ 16

Optional Accessories...................................................................................................................................17

Parts Lists & Exploded Views:

Table & Motor Assembly................................................................................................................. 18-21

Stand Assembly..............................................................................................................................22-24

Air Control Assembly......................................................................................................................25-27

Safety Guard Assembly..................................................................................................................28-31

4' Roller Table Assembly................................................................................................................32-33

8' Roller Table Assembly................................................................................................................34-35

Pneumatic Diagram........................................................................................................................ 36-37

Electrical Schematic.................................................................................................................................... 38

Prev entiv e M aintenance Checklist...............................................................................................................39

SAFETY RULES

As with all m achines, there i s a certain amount of hazard inv olv ed with the use of thi s c ut-off saw. Use t he machine with the respect and caution demanded where safety precautions are concerned. When normal safety precautions are overlooked or ignored, personal injury to the operator can result.

Read, understand and follow the safety and oper ating instruct ions found in this manual. Know the limitati ons and hazar ds associated with this machine.

Electrical grounding. Make certain that the machine f r ame is elect r ically gr ounded and that a ground lead is included in the incom ing electrical service. In cases where a cord and plug are used, make certai n that the grounding plug connects to a suitable ground. Follow the grounding procedure indic ated in the Nati onal Electrical Code.

Eye safety. Wear an approved safety shield, goggles, or gl asses to protect eyes. (NOTE: Common eyeglasses are only impact-resistant, they are not safety glasses.)

Personal protection. Before operating the mac hine, remove tie, rings, watch and other jewelry and roll up sleeves above the elbows. Rem ove all loose outer clot hing and confi ne long hair. Protective type footwear should be used. Where the noise exceeds the level of exposure allowed in Secti on 1910.95 of the OS HA Regulations, use hearing protecti ve devices. Do not wear gloves.

Guards. Keep the machine guards in place for every operation for which t hey c an be used. If any guards are removed for maintenance, DO NOT OPERATE the machine until t he guar ds are reinstalled. The blade guard is air act uated; it i s al so a clamp for stoc k . Never shut off or disconnect air while oper ator or bystanders are near guard.

Work area. Keep the floor around the machine clean and free of scr ap material, saw dust, oil and other liqui ds t o minimize the danger of tripping or slipping. B e sure t he table is fr ee of all scrap, foreign material and tools befor e st ar ting to cut. M ak e c er tain the work area is well lighted and that a pr oper exhaust system is used to minimize dust. Powermatic r ec ommends the use of anti-skid floor strips on the floor area where the operator normally stands and that eac h machine’s work area be mark ed off. P r ovide adequat e work space around the machine.

Avoid accidental starting: Make certain motor switch is in off position before connecting power to the machine.

Operator position. Maintain a balanced stanc e and k eep y our body under c ontrol at all tim es. Housekeeping. Bef or e turning on machine, remove all extra equipment such as keys, wrenches, scrap, and

cleaning rags away from the machine. Careless acts. Give the work you are doing your undivided att ention. Looking around, carrying on a

conver sation, and “horseplay” ar e c ar eless acts that can result in serious injury. Disconnect all power so urces (both air and electric) before perf orming any service, maintenance,

adjustment s or when changi ng blades. When the air li ne is disconnected or turned off, the guard will immediately drop down to the table. Keep hands clear of guard at all times. A machine under repair should be RED TAGGE D to show it should not be used until the maintenance is complete.

Maintain cutting tools in top condition. Keep blades sharp and clean for safe and best performance. Dull tools incr ease noi se l evels and can cause ki c k bac ks and glazed surfaces. Check the condition and adjustment of the tool s before maki ng any cuts.

Hand safety. K eep hands outsi de the machine. Do not clear chips and sawdust with hands; use a brush.

Job completion. If the operat or leaves the machine area for any reason, the cut- off saw should be turned "off" and the blade should c ome to a complete stop before his departure. In addi tion, if the operati on is complete, he should clean the saw and the work area. NEVER clean the saw with power "on" and never use the hands to clear sawdust and debris; use a brush.

Replacement p art s. Use only Powermatic or fact or y authorized replac ement parts and accessories; otherwise the warranty and guarant ee is null and void.

Misuse. Do not use t his Powermatic cut-off saw for other than its intended use. If used for other purposes, Powermati c disclaim s any real or implied warranty and holds itself harmless for any injury or dam age whic h may result from that use.

If you are not t horoughly familiar with the operation of cut - off saws, obtain advice from your supervisor, instructor or other qualified person.

Drugs, alcohol, medication. Do not operate this machine while under the influence of drugs, al c ohol, or any medication.

Health hazards. Some dust created by power sanding, sawing, grindi ng, drilling and other construction activities contains chemicals known to cause cancer, bir th defects or other r epr oductive harm. Some examples of these chemicals are: * Lead from lead-based paint. * Crystalline silica from bricks and cement and ot her masonry products. * Arsenic and chromium from chemically-treated l umber. Your risk from these ex posures varies, depending on how often you do this type of work. To reduce your exposure to these chemicals, work i n a well-ventilated area, and work with approved safety equipment, such as those dust masks that are specifically designed to f ilter out microscopic par ticles.

Familiarize yourself with the following safety notices used in this manual:

CAUTION: (This means that if precaut ions are not heeded, it may result i n minor or moderate inj ur y

and/or possible machine damage)

WARNING: (Thi s means that if precautions are not heeded, it could result in serious injur y or

possibly even death).

SAFETY

Familiarize yourself with the location and content of these decals on your machine.

FIGURE 1

SPECIFICATIONS: COS18 Cut-Off Saw

Stock num ber (COS18L).....................................................................................................................1791294

Stock number (COS18R)....................................................................................................................1791289

Motor........................................................................................................................... .. 10HP, 3Ph, 230/460V

Blade size......................................................................................................................... 18" diameter / 120T

Arbor size.....................................................................................................................................................1"

Arbor speed.....................................................................................................................................3320 RP M

Cutting capac ity @ maximum height .......................................................................................4-3/8" x 10-1/2"

Cutting capac ity @ m aximum width ...............................................................................................1" x 13-3/8"

Table si ze....................................................................................................................................26-1/2" x 28"

Table hei ght................................................................................................................................................33"

Air supply r equired................................................................................................................. 15 CFM / 70 PSI

Cycles per minute (maximum)..................................................................................................................... 70

Dust port.......................................................................................................................................................4"

Minimum CFM........................................................................................................................................... 600

Gross weight........................................................................................................................................850 lbs.

Net weight ...........................................................................................................................................730 lbs.

NOTE: T he above specificati ons were current at the time this manual was published, but because of our policy of continuous improvement, Powermatic reserves the right to change specifications without not ice and without inc ur r ing obligations.

FEATURES: COS18 Cut-Off Saw

FIGURE 2

RECEIVING

Open shipping crate and check for shipping damage. Report any damage immediately to your distri butor and shipping agent . Before using the cut-off saw, read the instruction manual thoroughly for assembl y, mai ntenance and safety instructions.

Contents of crate:

1 Cut-off saw 1 Handwheel 1 Toolbox c ontaining: 1 hex wrench set 1 socket wrench 1 open-end wrench set 1 Manual 1 War ranty card

INSTALLATION & ASSEMBLY

1. Lift the m achi ne with a hoist or fork li ft , using a sling through the lifting eye on top the machine, shown in Figure 3. Mak e sur e the capacity of the lifting unit is sufficient to safely lift this size machine.

2. The cut-off saw (with any roller table extensions) should be l ocat ed i n an area that is well-lit, with enough room around it for loading and off-loading stock and general servi cing of the machine.

3. The saw cabinet should be bolt ed to the fl oor through the holes at the four corners, using high quali ty lag screws.

Unpainted surf aces, such as the table and f ence, have been given a protective coating at the factory. This should be removed with a soft rag moistened with a good commercial solvent. Do not use acetone, lac quer thinner, gasoli ne or any flammable sol vents. Do not use an abrasi ve pad.

HANDWHEEL

Install the handwheel onto the threaded rod as shown (Fig. 3).

ELECTRICAL CONNECTIONS

WARNING: Electrical connectio ns must

be made by a qualified electrician in compliance will all relevant cod es. The machine must be properly grounded to help prevent electrical shock and possible death.

A power plug is not provided with the COS18. You may either connect one, or "hard-wire" the machine di rectl y to your elect rical panel prov ided there is a disconnect near the machine. Consult electrical schematic on page 34 for further clarification of wiring setup.

This machine must be grounded. Grounding provi des a path of least resistance t o help divert current away from the operator in case of electrical malfunction.

Make sure the voltage of your power supply matches the specifications on the motor plate of the machine.

After wiring, disconnect machine from power source, open the blade access door, rem ove the internal clear panel, and remove the blade (see "Installing/Changing Blade"). Re-connect the power and turn on t he saw motor (see "Oper ating Controls"). Observe the rotation of the arbor – it should rotate count erclockwise on the LH model, clockwise on t he RH m odel . I f i t does not, tur n of f the machine, disconnect power, and switch any two of the thr ee electric al leads.

NOTE: A label is affixed to the internal clear panel to help identify proper rotation.

EXTENSION CORDS

If an ex tension cord is necessary, m ake sure the cord rati ng is suitabl e for the amper age listed on the machine's motor plate. An undersized cord will cause a drop in line voltage resulting in loss of power and overheating.

The chart i n Figure 4 shows the correct si ze cord to use based on cord lengt h and nameplate am p rating. If in doubt, use the next heavier gauge. The smaller the gauge number, the heavier the cord.

DUST COLLECTION

Powermatic recommends the use of a dust collection system with this cut-off saw. The collector should have sufficient capacity (600 CFM) for this size machine.

Mount the dust collector via a 4" hose to the outlet on t he blade access door.

OPERATING CONTROLS

Control buttons are in two locations on the saw, and are shown in Figure 5. A main start and stop button i s located at t he back of the tabl e top. An emergency stop but ton is also f ound on the front. The air -cont rol switch, i n both l oc ati ons, start s the flow of air to the cy linder.

INSTALLING / CHANGING BLADE

1. Disconnect machine from power source.

WARNING: Never attemp t t o open bl ade

access door until blade has come to a complete stop.

2. Open the saw blade access door by loosening the screws.

3. Remov e the clear panel guarding the blade (Fig. 6) by loosening the screws and lifting up on the panel.

4. Lock the arbor by pulling the lever ( Fig. 8).

4. Loosen hex screw (Fig. 7) on the arbor. (counterclockwise to loosen on the LH model; clockwise on RH model). Remove hex screw and outer flange from the arbor.

5. Mount the blade on the arbor as shown, making sure the teeth are pointed in the proper direction – the teeth at top of blade should point toward rear of machine.

6. Re-install outer flange and screw, and tighten securely.

7. Re-install clear panel and c lose blade access door, fasteni ng it securely. NO TE: A sensor switch on the door will automatically shut down the saw if the door i s opened whi le the blade is moving.

WARNING: Do not reconnect power, air

or electric, without internal clear panel in place and door securely fastened with screws.

AIR SUPPLY

The correc t ai r pr essure for t he COS18 saw is 70 PSI. At tach the hose from your air source to the machine' s air val ve as shown in Figure 9.

SQUARING THE FENCE

The best way to square the fence is to make sample c uts. Using a square, check the end of a board af ter it has been chopped. If the cut is not square, proceed as follows:

1. Loosen one of the bolts on the fence and

lightly tap the fence with a block or mallet .

2. Retighten the bolt, and make another cut.

Repeat as necessary until fence is square.

INSTALLING ROLLER TABLES

(OPTIONAL)

Four-f oot and 8-f oot roll er tables are av ail able as accessories to your cut- off saw. The roller tables can be used as infeed or outfeed tables and mounted to either side of the saw. The terms "Right Hand" and "Left Hand" Model are determined by the location of the blade in reference to the main table. (The cover of this manual shows a lef t-hand model. )

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