Powermatic PM2020 User Manual
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Operating Instructions 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 A 09/2014
www.powermati c.c om Copyright © 2014 Powerm atic
1.0 Warranty and Service
Powermatic warrants every product it sells against manufacturers’ defects. If one of our tools needs service or repair,
please contact Technical Service by calling 1-800-274-6846, 8AM to 5PM CST, Monday through Friday.
Warranty Period
The general warranty lasts for the time period specified in the literature included with your product or on the official
Powermatic branded website.
• Powermatic products carry a limited warranty which varies in duration based upon the product. (See chart
below)
• Accessories carry a limited warranty of one year from the date of receipt.
• Consumable items are defined as expendable parts or accessories expected to become inoperable within a
reasonable amount of use and are covered by a 90 day limited warranty against manufacturer’s defects.
Who is Covered
This warranty covers only the initial purchaser of the product from the date of delivery.
What is Co vered
This warranty covers any defects in workmanship or materials subject to the limitations stated below. This warranty
does not cover failures due directly or indirectly to misuse, abuse, negligence or accidents, normal wear-and-tear,
improper repair, alterations or lack of maintenance. Powermatic woodworking machinery is designed to be used with
Woo d. Us e of th ese ma chines in the pr oces sing o f metal, plast ics, or other materia ls may void the warranty. The
exceptions are acrylics and other natural items that are made specifically for wood turning.
Warranty Limitations
Woodworking products with a Five Year Warranty that are used for commercial or industrial purposes default to a
Two Year Warranty. Please contact Technical Service at 1-800-274-6846 for further clarification.
How to Get Technical Support
Please contact Technical Service by calling 1-800-274-6846. Please note that you will be asked to provide proof
of initia l p u rch a s e whe n calling. If 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 Informat io n
Powermatic is constantly adding new products. For complete, up-to-date product information, check with your local
distributor or visit the Powermatic website.
How S tat e Law A pplies
This warranty gives you specific legal rights, subject to applicable state law.
Limitations on This Warranty
POWERMATIC LIMITS ALL IMPLIED WARRANTIES TO THE PERIOD OF THE LIMITED WARRANTY FOR EACH
PRODUCT. EXCEPT AS STATED HEREIN, ANY IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
FOR A PARTICULAR PURPOSE ARE EXCLUDED. SOME STATES DO NOT ALLOW LIMITATIONS ON HOW
LONG AN IMPLIED WARRANTY LASTS, SO THE ABOVE LIMITATION MAY NOT APPLY TO YOU.
POWERMATIC 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
OUR PRODUCTS. SOME STATES DO NOT ALLOW THE EXCLUSION OR LIMITATION OF INCIDENTAL O R
CONSEQUENTIAL DAMAGES, SO THE ABOVE LIMITATION OR EXCLUSION MAY NOT APPLY TO YOU.
Powermatic sells through distributors only. The specifications listed in Powermatic printed materials and on the official
Powermatic website are given as general information and are not binding. Powermatic reserves the right to effect at
any time, without prior notice, those alterations to parts, fittings, and accessory equipment which they may deem
necessary for any reason whatsoever.
Product Listing with Warranty Period
90 Days – Parts; Consumable items
1 Year – Woodworking Machinery used for industrial or commercial purposes
5 Year – Woodworking Machinery
NOTE: Powermatic is a division of JPW Industries, Inc. References in this document to Powermatic also apply to
JPW Industries, Inc., or any of its successors in interest to the Powermatic brand.
2
2.0 Table of Contents
Section Page
1.0 Warranty and Service ..................................................................................................................................... 2
2.0 Table of Contents ........................................................................................................................................... 3
3.0 Safety warnings .............................................................................................................................................. 4
4.0 Introduction .................................................................................................................................................... 5
5.0 Specifications ................................................................................................................................................. 6
6.0 Unpacking ...................................................................................................................................................... 7
6.1 Contents of shipping container ................................................................................................................... 7
7.0 Assembly ........................................................................................................................................................ 8
7.1 Tool caddy .................................................................................................................................................. 8
7.2 Guard ......................................................................................................................................................... 8
7.3 Bed extension (optional accessory)
7.4 Shelf assemblies (optional) ...................................................................................................................... 10
8.0 Electrical connections .................................................................................................................................. 11
8.1 Single Phase Operation ........................................................................................................................... 11
8.2 Three Phase Operation ............................................................................................................................ 11
8.3 Extension cords ........................................................................................................................................ 11
9.0 Adjustments ................................................................................................................................................. 12
9.1 Headstock and tailstock movement .......................................................................................................... 12
9.2 Cam tightness ............................................................................................................ .............................. 12
9.3 Tool support ............................................................................................................................................. 12
9.4 Locking handles ....................................................................................................................................... 12
9.5 Live center and cone ................................................................................................................................ 13
9.6 Indexer ..................................................................................................................................................... 13
9.7 Centers: installing/removing ..................................................................................................................... 13
9.8 Face plate: installing/removing ................................................................................................................. 14
9.9 Speed change .......................................................................................................................................... 14
9.10 Sheave and belt alignment ..................................................................................................................... 14
9.11 Checking spindle play ............................................................................................................................ 15
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 View ................................................................................. 26
16.1.2 PM2020 Headstock Assembly – Parts List ......................................................................................... 27
16.2.1 PM2020 Stand and Bed Assembly – Exploded View .......................................................................... 29
16.2.2 PM2020 Stand and Bed Assembly – Parts List ................................................................................... 30
16.3.1 Bed Extensions – Exploded View (optional accessory) ...................................................................... 31
16.3.2 Bed Extensions – Parts List (optional accessory) ............................................................................... 31
16.4.1 Outboard Turning Stand – Exploded View (optional accessory) ......................................................... 32
16.4.2 Outboard Turning Stand – Parts List (optional accessory) .................................................................. 32
16.5 Optional Accessories: Face Plates, T o ol Supports and Misc. ................................................................ 33
17.0 Electrical connections ................................................................................................................................ 34
18.0 Electrical: Remote On/Off Switch ( optional accessory) .............................................................................. 35
............................................................................................................. 9
3
3.0 Safety warnings
1. Read and understand the entire owner’s
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 Lathe is designed and intended f or use by
properly trained and experienced personnel
only. If yo u ar e not f a miliar wit h the pr op er a nd
safe operation of a Lathe, do not use until
proper training and knowledge have been
obtained.
5. Do not use this Lathe for other than its
intended use. If used for other purposes,
Powermatic disclaims any real or implied
warranty and holds itself harmless from any
injury that may result from that use.
6. Always wear approved safety glasses/face
shields while using this machine. Everyday
eyeglasses only have impact resistant lenses;
they are not safety glasses.
7. Before operating this Lathe, remove tie, rings,
watches and other jewelry, and roll sleeves up
past the elbows. Remove all loose clothing
and confine long hair. Non-slip footwear or
anti-skid floor strips are recomm ended. Do not
wear gloves.
8. Wear ear protectors (plugs or muffs) during
extended periods of operation.
9. Some dust created by power sanding, sawing,
grinding, drilling and other construction
activities contain chemicals known to cause
cancer, birth defects or other reproductive
harm. Some examples of these chemicals are:
• Lead from lead based paint.
• Crystalline silica from bricks, cement and
other masonry products.
• Arsenic and chromium from chemically
treated lumber.
Your risk of exposure varies, depending on
how often you do this type of work. To reduce
your exposure to these chemicals, work in a
well-ventilated area and work with approved
safety equipment, such as face or dust masks
that are specifically designed to filter out
microscopic particles.
10. Do not operate this machine while tired or
under the influence of drugs, alcohol or any
medication.
11. Do not expose this machine to rain, or operate
machine in damp locations.
12. Make certain the switch is in the OFF position
before connecting the machine to the power
supply.
13. Make certain the machine is properly
grounded.
14. Make all machine adjustments or maintenance
with the machine unplugged from the power
source.
15. 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.
16. Keep the safety guard in place at all times
when the machine is in use. If removed for
maintenance purposes or for turning
procedures which do not permit its use,
exercise extreme caution and replace the
guard immediately after the operation is
complete.
17. Check damaged parts. Before further use of
the machine, a guard or other part that is
damaged should be carefully checked to
determine that it will operate properly and
perform its intended function. Check for
alignment of moving parts, binding of moving
parts, breakage of parts, mounting and any
other conditions that may affect its operation.
A guard or other part that is damaged should
be properly repaired or replaced.
18. Provide for adequate space surrounding work
area and non-glare, overhead lighting.
19. Keep the floor around the machine clean and
free of scrap material, oil and grease.
20. Keep visitors a safe distance from the work
area. Keep children away.
21. Make your workshop child proof w ith padlocks,
master switches or by removing starter keys.
22. Give your work undivided attention. Looking
around, carrying on a conversation and “horseplay” are careless acts that can result in
serious injury.
23. Maintain a balanced stance at all times so that
you do not fall or lean against the centers,
workpiece or other moving parts. Do not
overreach or use excessive force to perform
any machine operation.
24. Use the right tool at the correct speed and
feed rate. Do not force a tool or attachment to
do a job for which it was not designed. The
right tool will do the job better and sa fer.
25. Use recommended accessories; improper
accessories may be hazardous.
26. Keep turning tools sharp and clean for the best
and safest performance, and position the tools
properly in relation to the workpiece.
27. Turn off the machine before cleaning. Use a
brush or compressed air to remove chips or
debris — do not use your hands.
28. Do not stand on the machine. Serious injury
could occur if the machine tips over.
29. Never leave the Lathe running unattended.
Turn the power off and do not leave the
machine until it comes to a complete stop.
30. Remove loose items and unnecessary work
pieces from the area before starting the
machine.
Familiarize yourself with the following safety notices used in this manual:
31. Check the workpiece carefully for sp lits, knots
or other obstructions which may cause a
safety risk while turning.
32. Adjust the tool support to the proper height
and position for the work. Rotate the
workpiece by hand to check clearance with the
tool support.
33. Select the appropriate speed for the turning
job at hand. Start at low speed and allow the
Lathe to ramp up to operating speed.
34. Never stop a rotating workpiece with your
hand.
35. If gluing up a workpiece, always use a highquality glue of the type necessary for that
particular workpiece.
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 procedures for a Model
PM2020 Lathe. This manual contains instructions on installation, safety precautions, general operating
procedures, maintenance instructions and parts b reakdown. This m achine has been designed and constructed
to provide consistent, long-term operation if used in accordance with instructions set forth in this manual. If
there are any questions or comments, please contact either your local supplier or Powermatic. Powermatic can
also be re ached at our web site: www.powermatic.com.
5
5.0 Specifications
Model Number ............................................................................................................................................ PM2020
Stock Number ........................................................................................................................................... 1792020
Capacities:
Working distance between centers .................................................................................................................... 20”
Working distance between centers, 18” bed extension mounted ....................................................................... 38”
Maximum distance between spindle face and tails tock quill ........................................................................ 23-3/4”
Swing over bed .................................................................................................................................................. 20”
Swing over toolrest base .................................................................................................................................... 17”
Motor and Electricals:
Motor type ............................................................................................. totally enclosed fan cooled, induction
Horsepower ................................................................................................................................ 2HP (1.5 kW)
Voltage .................................................................................................................................................... 220 V
Cycle ........................................................................................................................................................ 60Hz
Motor FLA (full load amperage) ................................................................................................................... 6.2
Power requirements ............................................................................................................. 220V, 3Ph or 1Ph
Drive system ............................................................................................................. Poly V belt, inverter drive
VFD input amperage ................................................................................................ 15.7A (1PH), 8.4A (3PH)
VFD output to motor ....................................................................................................................... 7.5A (3PH)
Recommended circuit* .............................................................................................................................. 20 A
* subject to local and national electrical codes
Headstock and Spindle:
Spindle speeds (RPM) ........................................................................................ high 125-3200; low 50-1200
Spindle thread size ..................................................................................................................... 1-1/4” x 8 T PI
Spindle direction ...................................................................................................................... forward/reverse
Headstock spindl e 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 s pindle, 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” (1118 mm) adjustable
Footprint of stand ............................................................................................... 35”L x 24”W (890 x 610 mm)
Tool support post diameter ........................................................................................................... 1” (25.4mm)
Materials:
Headstock body .................................................................................................................................. cast iron
Tailstock body .................................................................................................................................... cast iron
Bed ..................................................................................................................................................... cast iron
Legs .................................................................................................................................................... cast iron
Tool support and base ........................................................................................................................ cast iron
Weights:
Net ........................................................................................................................................... 559 lb (254 kg)
Shipping ................................................................................................................................... 609 lb (277 kg)
The above specifications were current at the time this manual was published, but because of our policy of
continuous improvement, Powermatic reserves the right to c hange specificati ons at any time and without prior
notice, without incurring obligations.
6
6.0 Unpacking
Open shipping container and check for shipping
damage. Report any damage immediately to your
distributor and shipping agent. Do not discard any
shipping material until the Lathe is assembled a nd
running properly.
Compare the contents of your container with the
following parts list to make sure all parts are intact.
Some parts can be found in separate boxes
packed around the Lathe. Missing parts, if any,
should be reported to your distributor. Read 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 Screws, 3/8” x 1-1/4” – (O)
10 Lock Washers, 3/8” – (P)
8 Flat Washers, 3/8” – (R)
1 Owner's Manual (not shown)
1 Warranty Card (not shown)
Read and understand the e ntire contents of this m anual before attempti ng set-up or
operation! Failure to comply may cause serious injury.
7
7.0 Assembly
Tools required for assembly
14mm wrench
4mm and 8mm hex wrenches
The Lathe should be
disconnected from power during assembly.
1. Remove any screws or straps that hold the
Lathe parts to the pallet, and remove
protective wrapping. Set all the boxes
containing legs and accessories to the side.
2. Before assembling the legs, decrease the
weight on the Lathe bed: Remove the stop bolt
at each end of the bed, and slide off the
headstock, tailstock and tool support base
(Refer to sect. 9.1, Headstock and Tailstock
Movement, for any clarification on removing
these).
The headstock is heavy; use
caution when removing it from th e lathe bed .
3. Turn the lathe bed upside down on the
shipping pallet (make sure there is nothing
beneath that would scratch the bed ways).
4. Install the legs to the bed using eight socket
head cap screws with eight lock washers and
eight flat washers (Figure 1). Tighten the
screws firmly with an 8mm hex wrench.
8. Exposed metal areas of the Lathe, such as the
bed and spindles, have been factory coated
with a protectant. This should be removed with
a soft cloth and a cleaner-degreaser. Clean
the bed areas under the headstock, tailstock
and tool support base. Do not use an abrasive
pad, and do not allow solvents to contact
painted or plastic areas.
9. Re-install headstock, tool support base,
tailstock and stop bolts.
7.1 Tool caddy
The tool caddy, shown in Figure 3, can be mounted
to the left end or right end of the Lathe. The left
end, near the headstock area, is generally
preferred for convenience. Use two socket head
cap screws and two lock washers wi th an 8mm hex
wrench to secure the tool caddy to the threaded
holes in the Lathe.
Figure 3
Figure 1
5. Screw the levelers into the threaded holes of
the legs (Figure 1). Tighten the hex nuts
against the bottom of the legs with a 14mm
wrench. The levelers can be adjusted at 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.
The tool caddy has holes for placing the knockout
rod, spur center, live center, live center pin,
comparator centers, and faceplate wrench.
Acc essor ies c an a lso b e st ored in t he t ail stoc k, a s
shown in Figure 4.
Figure 4
7.2 Guard
The guard must always be
used in operations that will allow its use.
8
1. On the guard, loosen the set screw on the
outer collar (shown in Figure 5) with a 4mm
hex wrench. Slide the outer collar off the guard
support rod.
Figure 5
2. Insert the guard support rod i nto the mounting
bracket at the rear of the headstock, as shown
in Figure 5. You will have to lift up on the
spring pin, as shown, to slide the guard
support rod into the mounting bracket. Release
the spring pin and it will snap into position as
you slide the support rod farther in.
3. Install the outer collar and tighten the set
screw.
4. The guard can be pivoted to one of two
positions: Operating mode (shown on front
cover) or tilted back for stock loading (shown
in Figure 6).
5. Pull up on the spring pin, and begin tilting the
guard, then release the spring pin. When the
guard reaches either of the two positions, the
spring pin will engage.
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,
thro ug h t he ho le s i n t he be d e xt e ns io n i nto t he
threaded holes on the Lathe. See Figure 7.
Figure 7 (optional 18” bed extension shown)
1. Adj ust extension bed to lathe bed, aligning the
surface and the inside ways as closely as
possible.
IMPORTANT: Top surface of bed extension
must be flush with surface of lathe bed, and
inside ways must be aligned, to allow smooth
movement of tailstock across joint.
2. Slide tailstock over joint where beds meet, so
that clamping nut is centered over joint (Figure
8). Lock tailstock clamping handle; this will
align the beds.
Figure 6
7.3
Bed extension
An optional 18” bed extension assembly, stock
number 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.
(optional accessory)
Figure 8
3. Tighten screws in extension bed.
4. Unlock tailstock and slide it back and forth to
test smoothness of joint.
5. Unscrew the stop bolt from the Lathe bed
(Figure 7), and screw it into the hole at the end
of the bed extension.
9
For outboard turning, where the headstock is
moved to the opposite end of the Lathe to
accommodate large bowl blanks, you can (1)
mount the 18” bed extension to the three lower
holes on the Lathe frame, and (2) mount a vertical
extension post [included with the optional bed
extension] to the tool rest base. See Figure 9.
For large outboard work, an optional outboard
turning stand (# 6294732) is available – see sect.
16.4.1.
Figure 10
Figure 9
(shown with optional accessories)
7.4 Shelf assemblies (optional)
The double ledges on the inside of the Lathe legs
will provide support for a shelf (not provided),
which is convenient for storing larger items while
keeping them easily accessible.
Figures 10-11-12 illustrate three methods of
creating a shelf, using common lumber and basic
tools.
IMPO RT ANT T IP : It is unlikely that a full-size shelf
can be completely built and then inserted between
the Lathe legs. Therefore, construct the shelf in
pieces and insert screws only after the shelf has
been established beneath the Lathe.
Shelf Style 1 (Figure 10)
Lay two 2x6 boards flat upon the inner ledges.
Boards of 33” length are suitable, although 33-1/2”
is optimal.
Shelf Style 2 (Figure 11)
Lay two 2x4’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 11
Shelf Style 3: (Figure 12)
This is a basket-style shelf consisting of two 2x6’s
and dowel rods. The advantage of this design is
that most wood chips will fall through the shelf
instead of accumulating on it. The instructions
below are for building the shelf shown in Figure 12.
Materials used:
2 – 2x6’s (33” suitable, 33-1/2” optimal).
8 – wood dowels, 4’ length, 5/8” diameter.
1. Mark your ho le centers (2” centers) along the
length of a 2x6. Place the holes so that the
tops of the dowels will be even with the tops of
the ledges on the Lathe. Also, adj ust your hole
centers as necessary so that the first and last
dowel will begin at approximately the same
distance from the ledge at both ends of the
Lathe.
2. Use a 5/8” spade bit chucked in a drill press or
in a portable drill. Bore t he holes through one
2x6; this will be the rear piece.
3. On the other 2x6, do not bore t hrough b ut onl y
deep enough to securely hold the ends of the
dowel rods. This will be the front piece and will
provide a pleasing appearance at the front of
your Lathe.
10
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
Electr ical 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
cond uctor , wit h ins ulat ion ha ving a n oute r surf ace
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 equipmentgrounding 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 i s
recommended that the lathe be connected to a 20
Amp circuit with circuit breaker or time delay fuse.
Local codes take precede nce over r ecomm enddations.
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 “hardwired” 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 t he Lat he to a panel, m ake
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
Extension Cord Length *
25
50
75
100
150
200
Amps
< 5 16 16 16 14 12 12
5 to 8 16 16 14 12 10 NR
8 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 li miting th e lin e voltag e drop t o 5V at 150% of the
rated amp eres.
NR: Not Recommended.
feet
feet
Table 1
feet
feet
feet
feet
11
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