background image

 

11

4.  When all holes have been bored, place the 

2x6’s on edge in the outer ledges of the Lathe. 

5.  Cut the dowel rods to length with a miter saw 

or hand saw, so that after insertion the rods 
will be flush with the back of the rear 2x6. 

6.  Insert the dowel rods through the holes in the 

rear 2x6, as shown in Figure 12. 

7.  A strip of wood can be screwed to the rear 2x6 

to cover the dowel holes and prevent the 
dowels from working out. 

 

Figure 12 

8.0

  Electrical connections 

 

Electrical connections must be 

made by a qualified electrician in compliance 
with all relevant codes. This machine must be 
properly grounded to help prevent electrical 
shock and possible fatal injury.

 

This machine must be grounded. In the event of a 
malfunction or breakdown, grounding provides a 
path of least resistance for electric current to 
reduce the risk of electric shock.  

Improper connection of the equipment-grounding 
conductor can result in a risk of electric shock. The 
conductor, with insulation having an outer surface 
that is green with or without yellow stripes, is the 
equipment-grounding conductor. If repair or 
replacement of the electric cord or plug is 
necessary, do not connect the equipment-
grounding conductor to a live terminal. 

Check with a qualified electrician or service 
personnel if the grounding instructions are not 
completely understood, or if in doubt as to whether 
the tool is properly grounded.  

Repair or replace a damaged or worn cord 
immediately. 

The Lathe will operate on single phase or three 
phase, 230 volt power supply. Make sure the 
characteristics of your power supply match the 
specifications on the motor plate of the Lathe. It is 
recommended that the lathe be connected to a 20 
Amp circuit with circuit breaker or time delay fuse. 

Local codes take precedence over recommend-
dations.

 

8.1

  Single Phase Operation 

A three wire pigtail for use on 230 volt single phase 
power is attached to the inverter and may be “hard-
wired” to the power source, or connected to a 
UL/CSA listed receptacle plug.  

Connect the 230 volt supply to the black and white 
leads and ground the green lead.  

If you are hard-wiring the Lathe to a panel, make 
sure a disconnect is available for the operator. 
During hard-wiring of the Lathe, make sure the 
fuses have been removed or the breakers have 
been tripped in the circuit to which the Lathe 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. 

8.2

  Three Phase Operation 

If three phase power is used, it will be necessary to 
replace the pigtail wire attached to the inverter with 
a 12/4 wire and connect the three hot leads to the 
inverter at R, S, T as shown in the wiring diagram 
in 

sect. 17.0

. Always connect the ground lead.  

8.3

  Extension cords 

The use of extension cords is discouraged. Try to 
position machines within reach of the power 
source. If an extension cord becomes necessary, 
make sure the cord rating is suitable for the 
amperage listed on the machine’s motor plate. An 
undersized cord will cause a drop in line voltage 
resulting in loss of power and overheating. 

Use the chart in Table 1 as a general guide in 
choosing the correct size cord. If in doubt, use the 
next heavier gauge. The smaller the gauge 
number, the heavier the cord. 

Recommended Gauges (AWG) of Extension Cords 

Amps 

Extension Cord Length * 

25 

feet 

50 

feet 

75 

feet 

100 
feet 

150 
feet 

200 
feet 

16 16 16 14 12 12 

to 

8  16 16 14 12 10 NR 

to 

12  14 14 12 10 NR NR 

12 

to 

15 12 12 10 10 NR NR 

15 

to 

20 10 10 10 NR NR NR 

21 

to 

30  10  NR NR NR NR NR 

*based on limiting the line voltage drop to 5V at 150% of the 
rated amperes. 

NR: Not Recommended.

 

Table 1 

Summary of Contents for PM2020

Page 1: ...ctions and Parts Manual Woodturning Lathe 20 x 20 Model PM2020 Powermatic 427 New Sanford Road LaVergne Tennessee 37086 Part No M 1792020 Ph 800 274 6848 Revision A1 11 2017 www powermatic com Copyright 2017 Powermatic ...

Page 2: ...f a product requires further inspection the Technical Service representative will explain and assist with any additional action needed Powermatic has Authorized Service Centers located throughout the United States For the name of an Authorized Service Center in your area call 1 800 274 6846 or use the Service Center Locator on the Powermatic website More Information Powermatic is constantly adding...

Page 3: ... 9 12 Sheave drive belt replacement 15 10 0 Operating controls 16 11 0 Operation 16 11 1 Inspection 16 11 2 Turning tools 16 11 3 Spindle turning 17 11 4 Face plate and bowl turning 20 12 0 Maintenance 22 13 0 Indexer positions 23 14 0 Troubleshooting the PM2020 Lathe 24 15 0 Recommended lathe speeds per diameter of workpiece 25 16 0 Replacement parts 25 16 1 1 PM2020 Headstock Assembly Exploded V...

Page 4: ...y 14 Make certain the machine is properly grounded 15 Make all machine adjustments or maintenance with the machine unplugged from the power source 16 Remove adjusting keys and wrenches Form a habit of checking to see that keys and adjusting wrenches are removed from the machine before turning it on 17 Keep the safety guard in place at all times when the machine is in use If removed for maintenance...

Page 5: ...ticular workpiece Familiarize yourself with the following safety notices used in this manual This means that if precautions are not heeded it may result in minor injury and or possible machine damage This means that if precautions are not heeded it may result in serious injury or possibly even death 4 0 Introduction This manual is provided by Powermatic covering the safe operation and maintenance ...

Page 6: ...spindle taper 2 Morse Hole through headstock spindle diameter 5 8 Outboard external threads 1 3 16 18 UNC Indexing positions 48 Tailstock Tailstock quill taper 2 Morse Hole through tailstock spindle diameter 3 8 Tailstock quill travel 4 1 2 114 mm Measurements Maximum overall length 62 1 4 1581 mm Overall height to top of headstock 49 1 2 1257 mm Distance from floor to centerline of spindle 44 111...

Page 7: ...d the instruction manual thoroughly for assembly maintenance and safety instructions 6 1 Contents of shipping container 1 Lathe Bed with Headstock Tailstock Tool Support Base A 2 Leg Assemblies B 1 Guard C 1 Tool Support 14 D 1 Face Plate 3 E 1 Live Center F 1 Spur Center 1 G 1 Index Pin H 1 Live Center Pin J 1 Knockout Rod K 1 Face Plate Wrench L 1 Tool Caddy M 4 Levelers N 10 Socket Hd Cap Screw...

Page 8: ...any time to ensure the Lathe is stable and level 6 Use an assistant to help stand the Lathe right side up on its legs 7 The Lathe should be located in a dry area on a sturdy floor and with sufficient lighting Leave plenty of space around the machine for operations and routine maintenance work 8 Exposed metal areas of the Lathe such as the bed and spindles have been factory coated with a protectant...

Page 9: ...mber 6294727B is available for the Lathe see your Powermatic dealer To mount the bed extension to the Lathe 1 Slide the tailstock away from the edge of the bed 2 Have an assistant hold the bed extension flush to the end of the Lathe bed and insert three 3 8 x 1 3 4 socket head cap screws three 3 8 lock washers and three 3 8 flat washers through the holes in the bed extension into the threaded hole...

Page 10: ...x4 s or 2x6 s on edge into the outer ledges Boards of 33 length are suitable 33 1 2 optimal Cut two pieces from a plywood board and screw them to the top edges of the 2x4 s One 33 plywood piece will not fit through the legs of the Lathe use at least two pieces Make the plywood pieces flush with the outside edge of the 2x4 s Figure 10 Figure 11 Shelf Style 3 Figure 12 This is a basket style shelf c...

Page 11: ...er or time delay fuse Local codes take precedence over recommend dations 8 1 Single Phase Operation A three wire pigtail for use on 230 volt single phase power is attached to the inverter and may be hard wired to the power source or connected to a UL CSA listed receptacle plug Connect the 230 volt supply to the black and white leads and ground the green lead If you are hard wiring the Lathe to a p...

Page 12: ... of the lathe bed B Figure 13 and slide the tailstock off the end of the bed 2 Turn the tailstock on its side and tighten the lock nut with a wrench See Figure 14 3 Mount tailstock on bed and insert the stop bolt at the end of the bed Figure 14 9 3 Tool support A 14 tool support is provided with your Lathe It is designed to allow adjustment for height position on the bed and angle to the work Loos...

Page 13: ...w and remove the index pin and look down the hole carefully counting the number of holes as you rotate the spindle using the handwheel Continue to rotate the spindle until you reach the hole needed for your second flute cutting then re insert the index pin 3 Refer to the more detailed instructions and chart in sect 13 0 to determine in which holes to place the index pin relative to the number of f...

Page 14: ...n the access door on the headstock 3 Loosen the pivot lock handle A Figure 22 and lift up the tension handle B Figure 22 to raise the motor Tighten the pivot lock handle A Figure 22 to hold the motor in the raised position 4 There should be sufficient slack in the belt to reposition it to the other steps on the sheaves The label on the access door shows the required belt position 5 Loosen the pivo...

Page 15: ...bs on the tabbed lock washer C Figure 23 9 12 Sheave drive belt replacement Replacing the spindle sheave can be a difficult procedure it is recommended that the headstock be taken to an authorized service center for this 1 Disconnect Lathe from power source 2 Loosen the pivot lock handle A Figure 22 and lift up the tension handle B Figure 22 to raise the motor 3 Tighten the pivot lock handle A Fig...

Page 16: ...nverter or the inverter settings contact Powermatic technical service at 1 800 274 6848 A lightning strike or power surge may cause the inverter to fail When lathe is not in use disconnect power plug or have a 3 or 4 pole disconnect installed on the power side 11 0 Operation The information which follows is general in nature and is not intended to be a complete course in wood turning Nothing can r...

Page 17: ... likely to overheat but can be damaged if allowed to get red hot High speed steel tools should not be quenched for cooling Honing with a diamond lap or slipstone will save trips to the grinder and keep the edge fresh 11 3 Spindle turning Spindle turning takes place between the centers of the lathe It requires a spur or drive center in the headstock and a live or dead center in the tailstock A cup ...

Page 18: ...ble of exerting excessive pressure against the workpiece and the headstock Apply only sufficient force with the tailstock to hold the workpiece securely in place Excessive pressure can overheat center bearings and damage both workpiece and Lathe 10 Move tool support into position It should be parallel to the workpiece just below the centerline and approximately 1 8 to 1 4 from the corners of the w...

Page 19: ...he tool at 90 degrees to the workpiece touch the point of the tool to the workpiece and roll in towards the bottom of the cove See Figure 31 Stop at the bottom attempting to go up the opposite side may cause the tool to catch 2 Move the tool over the desired width of the cove 3 With the flute facing the opposite direction repeat step 1 for other side of cove Stop at bottom of cut Figure 31 V Cuts ...

Page 20: ...the same diameter as the face plate Figure 33 Both waste block and workpiece should have flat surfaces for gluing 6 Glue the block to the workpiece Avoid using brown paper or newspaper between the waste block and workpiece It may work fine if you are using scrapers but a slight catch with a bowl gouge can separate the two NOTE When using a waste block be careful with the adhesive you select Dry wo...

Page 21: ...e or ball bearing center into position Lock the tailstock to the bed and advance the tailstock spindle in order to seat the cup center into the workpiece Tighten the ram locking handle 4 Turn workpiece by hand to ensure proper clearance 5 Start lathe at lowest speed and bring it up to the maximum safe speed for the size of work to be turned see sect 15 0 If the machine starts to vibrate lower the ...

Page 22: ...eliminate Use power sanding techniques to avoid concentric sanding marks around your finished piece Avoid rounding over the rim and foot with sandpaper try to keep details crisp Finish sanding with 220 grit 3 Remove sanding dust with tack rags or compressed air and with lathe turned off apply first coat of finish Let stand for several minutes wipe off excess Allow to dry before sanding again with ...

Page 23: ...serted into hole combination A 5 this will be followed by A 9 Succeeding flutes will be made with the index pin in the B position B 2 B 6 and so on Figure 36 No of Flutes 360 divided by Angle Letter Letter Letter Letter 1 360 00 A 1 2 180 00 A 1 7 3 120 00 A 1 5 9 4 90 00 A 1 4 7 10 5 72 00 6 60 00 A 1 3 5 7 9 11 8 45 00 A 1 4 7 10 D 2 5 8 11 9 40 00 A 1 5 9 B 2 6 10 C 4 8 12 10 36 00 12 30 00 A 1...

Page 24: ...22 Lathe on uneven surface Adjust levelers Lathe runs at one speed only Potentiometer faulty Replace potentiometer Electronic AC inverter is not programmed properly or is defective or there is loose wiring Contact Powermatic Technical Service to help identify problem 800 274 6846 Tools tend to grab or dig in Dull tools Keep tools sharp Tool support set too low Reposition tool support height Tool s...

Page 25: ...175 260 375 Table 4 16 0 Replacement parts Replacement parts are listed on the following pages To order parts or reach our service department call 1 800 274 6848 Monday through Friday 8 00 a m to 5 00 p m CST Having the Model Number and Serial Number of your machine available when you call will allow us to serve you quickly and accurately Non proprietary parts such as fasteners can be found at loc...

Page 26: ...26 16 1 1 PM2020 Headstock Assembly Exploded View ...

Page 27: ... 1 26 6430045 Knob 2 27 3268219 Handle Headstock 1 28 3719189 Motor Sheave 1 29 2595036 Motor Assembly Plate 1 30 TS 0720091 Lock Washer 3 8 3 31 TS 0209061 Socket Head Cap Screw 3 8 16x1 1 4 3 32 3520B 232 Motor 2HP 220V 60Hz 1 PM2000 MF Motor Fan 1 70 4101 2 Motor Fan Cover 1 33 JWL1642 166 Bracket 1 35 TS 0680042 Flat Washer 3 8 2 36 6350031 Motor Plate Locking Handle 1 37 JWL1642 130A Digital ...

Page 28: ...L1642 169 Braking Resistor 1 81 6430047 Knob 1 82 3520B 282 Bracket 1 83 6295838 Phillips Round Head Machine Screw M3x20 2 84 TS 1490021 Hex Cap Screw M8x16 1 85 TS 0267021 Socket Set Screw 1 4 20x1 4 2 6294754 Knockout Rod Assembly includes index 86 thru 92 1 86 TS 0270031 Socket Set Screw 5 16 18x3 8 1 87 3520B 287 Slide Hammer 1 88 3520B 288 Slide Handle 1 89 6295796 Nyloc Insert Socket Set Scr...

Page 29: ...29 16 2 1 PM2020 Stand and Bed Assembly Exploded View ...

Page 30: ...005 Quill Lock Sleeve 1 24 3520B 124 Tailstock 1 25 3520B 125 Tailstock Handwheel 1 26 3520B 126 Tailstock Handle 1 27 6430045 Knob 1 28 3268217 Handle 1 29 3092095 Clamp 1 30 6095038 Bushing 1 31 3708012 Tailstock Clamping Shaft 1 32 TS 0640091 Nylon Lock Hex Nut 3 8 16 1 33 TS 1490021 Hex Cap Screw M8x16 1 34 3520B 134 Cover Plate 1 35 6295717 Lock Knob 1 36 TS 081C022 Phillips Pan Head Machine ...

Page 31: ...8 Bed Extension 1 4 TS 0680042 Flat Washer 3 8 3 5 TS 0720091 Lock Washer 3 8 3 6 TS 0209081 Socket Head Cap Screw 3 8 16x1 3 4 3 6294726B 50 Bed Extension Assembly includes items 7 thru 15 7 3520B 101 50 Bed 1 8 3520B 102 Leg 1 9 TS 0570031 Hex Nut 3 8 16x1 2 10 6442000 Leveler 2 11 TS 0720091 Lock Washer 3 8 4 12 TS 0209061 Socket Head Cap Screw 3 8 x1 1 4 4 13 TS 0680042 Flat Washer 3 8 3 14 TS...

Page 32: ...ription Size Qty 6294732 Heavy Duty Outboard Turning Stand Assembly items 1 thru 7 1 3042503 Turning Stand Base 1 2 6295897 Offset Tool Support Pin 1 00 diameter 1 3 6295898 Offset Tool Support Casting 1 00 hole 1 4 2695026 Screw Lock Assembly 3 5 3423055 Turning Stand Leg 1 6 6861700 Lock Washer 5 8 2 7 6769002 Socket Head Cap Screw 5 8 18 x 2 2 ...

Page 33: ...o Part No Description Size Qty 1 6295902 Ball Bearing Tailstock Center not shown 2 6294736 3 Face Plate 1 1 4 8 3 6294733 Remote ON OFF Switch 4 6294740 Bowl Turning Tool Support R H 5 6294751 Bowl Turning Tool Support L H 6 6294739 6 Tool Support 7 6294742 14 Tool Support ...

Page 34: ...34 17 0 Electrical connections ...

Page 35: ...s 3 Run the remote switch s wiring harness through the opening in the back of the headstock and out through the front of the headstock 4 Connect the remote switch s wiring harness to the back of the Push Pull switch refer to the electrical schematic sect 17 0 5 Reinstall the control panel to the headstock From the back of the headstock lightly pull out any excess wire that may be inside the headst...

Page 36: ...36 427 New Sanford Road LaVergne Tennessee 37086 Phone 800 274 6848 www powermatic com ...

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