This Manual is Bookmarked Operating Instructions and Parts Manual 12” Jointer Model 1285 WMH TOOL GROUP 2420 Vantage Drive Elgin, Illinois 60123 Ph.: 800-274-6848 www.wmhtoolgroup.com Part No.
This manual has been prepared for the owner and operators of a Powermatic Model 1285 Jointer. Its purpose, aside from machine operation, is to promote safety using accepted operating and maintenance procedures. To obtain maximum life and efficiency from your jointer and to aid in using it safely, please read this manual thoroughly and follow the instructions carefully. Warranty and Service WMH Tool Group warrants every product it sells.
Table of Contents Warranty and Service ..............................................................................................................................2 Warning...................................................................................................................................................4 Introduction..............................................................................................................................................7 Specifications ..................
Warning 1. Read and understand the entire owners manual before attempting assembly or operation. 2. Read and understand the warnings posted on the machine and in this manual. Failure to comply with all of these warnings may cause serious injury. 3. Replace the warning labels if they become obscured or removed. 4. This jointer is designed and intended for use by properly trained and experienced personnel only.
blahblahblah 19. Keep visitors a safe distance from the work area. Keep children away. 20. Make your workshop child proof with padlocks, master switches or by removing starter keys. 21. Give your work undivided attention. Looking around, carrying on a conversation and “horse-play” are careless acts that can result in serious injury. 22. Maintain a balanced stance at all times so that you do not fall or lean against the knives or other moving parts.
36. Before attempting to joint or plane, each work piece must be carefully examined for stock condition and grain orientation. NOTE: At certain times it may be necessary to plane against the grain when working with a swirl grain wood or burls. With this type of work the operator must use a lesser depth of cut and a slow rate of feed.
Introduction This manual is provided by Powermatic covering the safe operation and maintenance procedures for a Model 1285 Jointer. This manual contains instructions on installation, safety precautions, general operating procedures, maintenance instructions and parts breakdown. This machine has been designed and constructed to provide years of trouble free operation if used in accordance with instructions set forth in this manual.
Contents of the Shipping Container Unpacking 1 1 1 1 1 1 2 1 1 Open shipping container and check for shipping damage. Report any damage immediately to your distributor and shipping agent. Compare the contents of your container with the following parts list to make sure all parts are intact. Missing parts, if any, should be reported to your distributor. Read the instruction manual thoroughly for assembly, maintenance and safety instructions.
Assembly Tools need for assembly: 10mm hex wrench (provided) 10-12mm combination wrench (provided) forklift or hoist with straps cross-point screwdriver 1. Remove top and sides of crate from around the machine. 2. Remove the dust hood and the fence assembly from the skid. Reach into the stand and remove the screws securing the stand to the skid. Figure 1 3. Raise the jointer off the skid with lifting straps.
Switch Arm The arm (Figure 3) on which the push button switch is located is shipped in the down position. The arm should be pivoted to upright position as shown. Tighten the two screws with a 10mm wrench. Figure 3 Dust Hood Before attaching the dust hood, make sure the hole in the dust chute is concealed by the dust chute cover, as shown in Figure 4. Mount the dust hood to the jointer stand using the seven 1/4 x 1/2 hex cap screws and seven 1/4 lock washers (Figure 5).
If the jointer is to be hard-wired, make sure the fuses have been removed or the breakers have been tripped in the circuit to which the saw will be connected. Place a warning placard on the fuse holder or circuit breaker to prevent it being turned on while the machine is being wired. Always follow proper Lock-Out/Tag-Out procedures when performing any wiring on this machine. Voltage Conversion The Model 1285 Jointer is wired for 1-phase, 230 volt only; or 3-phase, 230/460 volt.
Adjustments Disconnect jointer from power supply before making adjustments. Drive Belt Tension To check the tension of the drive belts: 1. Remove the three cap nuts and flat washers on the pulley cover with a 9/16 wrench, and remove the guard to expose the belts and pulleys. See Figure 9. Figure 9 NOTE: The hex nuts and flat washers on the threaded rods (A, Figure 9) should be left in place; they keep the pulley cover from bending as it is being tightened back into place with the cap nuts. 2.
2. Place a straight edge on the outfeed table and extending over the cutterhead, as shown in Figure 13. 3. Rock the cutterhead slightly so that a knife tip contacts the straight edge. If the knife tip just contacts the straight edge without moving the straight edge, then the outfeed table is at the proper height. If the knife tip pushes up the straight edge, the outfeed table is too low. If the knife tip does not contact the straight edge, the outfeed table is too high. 4.
Setting Infeed Table Height (Depth of Cut) 1. To set the cutting depth, loosen handwheel (A, Figure 17) by turning counterclockwise. 2. Move table adjustment arm (B, Figure 17) up or down to raise or lower infeed table. The pointer (C, Figure 17) shows the depth of cut on the adjoining scale. 3. Tighten handwheel securely (A, Figure 17).
5. It is recommended when replacing knives that you clean the knife slots in the cutterhead. Remove the gib along with the gib screws, and remove the two springs. Clean the cutterhead slot of any debris or dust that might prevent the knife from seating properly. Also clean the gib, gib screws, and springs. Closely inspect the gib screws – if the threads appear worn or stripped, or if the heads are becoming rounded, replace the screws. 6. Re-insert the springs and the gib. 7.
Replacing Knife Inserts (Helical Cutterhead) Jointer knife inserts are very sharp. Use care and proceed slowly when working with or around the cutterhead. The helical cutterhead is a solid steel design that holds 44 two-sided knife inserts, and two rabbet knife inserts on the outboard end of the cutterhead. Replacing knife inserts is a simple process, and they will seat themselves properly without having to be set with a knife gauge.
Fence Adjustments The fence (A, Figure 22) tilts backward and forward to 45 degrees. It has a 90-degree stop (B, Figure 22) and a 45-degree stop (C, Figure 22). To tilt fence forward: 1. Loosen the lock handle (D, Figure 22) and tilt the fence forward using the handle (E, Figure 22). NOTE: Lift up slightly on the fence while tilting it, to prevent scratching the table surface. 2. Retighten lock handle (D, Figure 22). Figure 22 To tilt fence backward: 1.
To check and adjust the 45-degree stop: 1. Loosen lock handle (D, Figure 22) and tilt fence until it contacts the 45-degree stop (C, Figure 22). 2. Place a machinist’s protractor or similar device set at 45 degrees on the table and against the fence. 3. If adjustment is necessary, loosen the hex nut on the stop screw (C, Figure 22) and turn the stop screw until the fence is flush with the protractor. 4. Retighten the hex nut.
Hand Placement At the start of the cut, the left hand holds the workpiece firmly against the infeed table and fence, while the right hand pushes the workpiece toward the knives. After the cut is under way, the jointed surface of the workpiece rests firmly on the outfeed table. The left hand should press down on this part, at the same time maintaining flat contact of the workpiece with the fence.
Use push blocks to rabbet cut whenever possible. The rabbeting capacity is 3/4”. 1. Disconnect machine from power source. 2. Set fence for desired width of rabbet. 3. Check width of the rabbet by measuring the distance from the end of a knife in the cutterhead to the fence. 4. Reconnect power. Lower the infeed table 1/32” at a time and make successive cuts until the desired depth of rabbet has been obtained. See Figure 28. NOTE: It is easier and safer to take a series of shallow cuts.
Maintenance Disconnect machine from power source before performing any maintenance. Failure to comply may cause serious injury. Check all screws and fasteners occasionally and keep them tightened securely. Inspect cords; a cord that is frayed or damaged in any way should be replaced immediately. The table and fence surfaces must be kept clean and free of rust for best results. Some users prefer a paste wax coating.
6. Slide the cutterhead out the rabbeting side. 7. Loosen hex cap screw (A, Figure 33) and remove pulley (B, Figure 33) and key (C, Figure 33). 8. Loosen screws (D, Figure 33) on both sides and remove bearing cap plates (E, Figure 33). NOTE: Figure 33 shows the pulley end of the cutterhead. The procedure is similar for breaking down the opposite end of the cutterhead - refer to assembly drawing on page 39 for the specific parts.
Whetting Knives (Straight Cutterhead) When knives become dull enough so that it is noticeable when cutting, they should be resharpened or replaced. A sharp knife will work easier and last longer. The penalty paid for a dull knife is less blade life and greater wear and tear on all parts of the machine. Figure 34 Jointer knives are very sharp. Use care and proceed slowly when working with or around the cutterhead. 1. Disconnect machine from power source. 2.
Troubleshooting – Operating Problems Trouble Probable Cause Remedy Finished stock is concave on back end. Knife is higher than outfeed table. Raise outfeed table until it aligns with tip of knife. (see page 13) Finished stock is concave on front end. Outfeed table is higher than knife. Lower outfeed table until it aligns with tip of knife. (see page 13) Finished stock is concave in the middle. Both tables have too much end fall.
Trouble Probable Cause Remedy Uneven knife marks on workpiece. Knives/inserts are knicked, or out of alignment. Replace knicked knives/inserts; align knives properly with knife-setting gauge (straight cutterhead only). Troubleshooting – Mechanical and Electrical Problems Trouble Machine will not start/restart or repeatedly trips circuit breaker or blows fuses. Probable Cause Remedy No incoming power. Verify unit is connected to power, and on-switch is pushed in completely.
Trouble Probable Cause Remedy Motor failure. If electric motor is suspect, you have two options: Have a qualified electrician test the motor for function or remove the motor and take it to a qualified electric motor repair shop and have it tested. Miswiring of the unit. Double check to confirm all electrical connections are correct and properly tight. The electrical connections other than the motor are pre-assembled and tested at the factory.
Optional Accessories 6292535 6400013 PJ1696-011 PJ1285-109 6285917 12” Jointer Knives (set of 3) Carbide Insert Knives for Helical Head (set of 10) Rabbet Inserts for Helical Head (set of 2) Contactor, 3Ph, 460V Push Block Replacement Parts Replacement parts are listed on the following pages. To order parts or reach our service department, call 1-800-274-6848 between 7:00 a.m. and 6:00 p.m. (CST), Monday through Friday.
Parts List: Stand Assembly Index No. Part No. Description Size Qty 1...............PJ1285-101............. Stand........................................................... ......................................... 1 2...............TS-0680041 ............ Flat Washer ................................................. 3/8” ................................... 4 3...............TS-0720091 ............ Lock Washer................................................ 3/8” ................................... 4 4...
Stand Assembly 29
Parts List: Table Assembly Index No. Part No. Description Size Qty 1...............6292525.................. Base ............................................................ ......................................... 1 2...............6292526.................. Bar, Table Raising Link................................ ......................................... 2 3...............6292527.................. Bracket ........................................................ ........................................
Table Assembly 31
Parts List: Motor Pulley Assembly Index No. Part No. Description Size Qty 1...............6292512.................. Motor........................................................... 3HP 3Ph ........................... 1 .................6292512-MF............ Motor Fan (not shown) ................................ ......................................... 1 .................6292512-MFC ......... Motor Fan Cover (not shown) ...................... ......................................... 1 ................
Motor Pulley Assembly 33
Parts List: Cutterhead Guard Assembly Index No. Part No. Description Size Qty 1...............6292581.................. Ledge, Rabbet ............................................. ......................................... 1 2...............6292582.................. Guard .......................................................... ......................................... 1 3...............6292583.................. Shaft............................................................ .........................
Cutterhead Guard Assembly 35
Parts List: Straight Cutterhead Assembly Index No. Part No. Description Size Qty .................6292550.................. Cutterhead Assembly (Items 1 thru 19)……….......................................... 1...............6292561.................. Cutterhead .................................................. ......................................... 1 2...............PJ1696-002............. Left Bearing Housing ................................... ......................................... 1 3...........
Straight Cutterhead Assembly 37
Parts List: Helical Cutterhead Assembly Index No. Part No. Description Size Qty .................PJ1285-600............. Cutterhead Assembly (Items 1 thru 22)……….......................................... 1...............PJ1285-601............. Cutterhead................................................... ......................................... 1 2...............PJ1696-002............. Left Bearing Housing ................................... ......................................... 1 3...............
Helical Cutterhead Assembly 39
Parts List: Fence Assembly Index No. Part No. Description Size Qty 1...............6292592.................. Support, Fence ............................................ ......................................... 1 2...............6292593.................. Bracket ........................................................ ......................................... 1 3...............6292594.................. Column, Gear .............................................. .........................................
Fence Assembly 41
Electrical Connections – 1 Phase 42
Electrical Connections – 3 Phase 43
WMH Tool Group 2420 Vantage Drive Elgin, Illinois 60123 Phone: 800-274-6848 www.wmhtoolgroup.
