Powermatic SLR12 Service manual

Operating Instructions and Parts Manual
Straight Line Rip Saw
Model SLR12
Powermatic
427 New Sanford Road
LaVergne, TN 37086 Part No. M-0460276
Ph.: 800-274-6848 Revision G1 08/2019
www.powermatic.com Copyright © 2014 Powermatic
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IMPORTANT SAFETY INSTRUCTIONS
WARNING – To reduce risk of injury:
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 rip saw is designed and intended for use by properly trained and experienced personnel only. If
you are not familiar with the proper and safe operation of a rip saw, do not use until proper training
and knowledge have been obtained.
5. Do not use this rip saw 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. Your rip saw is provided with a 15HP main motor; do not equip your rip saw with a motor of
higher horsepower.
6. Always wear approved safety glasses/face shields while using this rip saw. Everyday eyeglasses only
have impact resistant lenses; they are not safety glasses.
7. Before operating the rip saw, 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 recommended. Do not wear gloves.
8. Keep hands outside the machine. Never reach under the guards to try to clear stock that stops
feeding.
9. Wear ear protectors (plugs or muffs) during extended periods of operation.
10. Do not operate this machine while tired or under the influence of drugs, alcohol or any medication.
11. Make certain the switch is in the OFF position before connecting the machine to the power supply.
12. Make certain the machine is properly grounded.
13. Make all machine adjustments or maintenance with the machine unplugged from the power source. A
machine under repair should be red tagged to show that it should not be used until maintenance is
complete.
14. 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.
15. Keep safety guards in place at all times when the machine is in use. If removed for maintenance
purposes, use extreme caution and replace the guards immediately.
16. 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.
17. Provide for adequate space surrounding work area and non-glare, overhead lighting.
18. Keep the floor around the machine clean and free of scrap material, oil and grease.
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 moving parts. Do not
overreach or use excessive force to perform any machine operation.
23. Be sure the blade rotates under power in a counterclockwise direction when viewed from the front of
rip saw (see page 6 for orientation of machine sides).

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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 safer.
25. Use recommended accessories; improper accessories may be hazardous.
26. Maintain tools with care. Keep blades sharp and clean for the best and safest performance. Follow
instructions for lubricating and changing accessories.
27. Turn off the machine and disconnect from power 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 machine 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:
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.
- - SAVE THESE INSTRUCTIONS - -
WARNING: Drilling, sawing, sanding or machining wood products generates wood dust and other
substances known to the State of California to cause cancer. Avoid inhaling dust generated from wood
products or use a dust mask or other safeguards for personal protection.
Wood products emit chemicals known to the State of California to cause birth defects or other
reproductive harm. For more information go to http://www.p65warnings.ca.gov/wood.
WARNING: This product can expose you to chemicals including lead and cadmium which are
known to the State of California to cause cancer, and phthalates which are known to the State of
California to cause birth defects or other reproductive harm. For more information go to
http://www.p65warnings. ca.gov.

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Table of Contents
IMPORTANT SAFETY INSTRUCTIONS ...................................................................................................... 2
Table of Contents .......................................................................................................................................... 4
Introduction ................................................................................................................................................... 5
Specifications ................................................................................................................................................ 5
Features ........................................................................................................................................................ 6
Receiving....................................................................................................................................................... 7
Installation ..................................................................................................................................................... 7
Control Box ................................................................................................................................................ 8
Grounding Instructions .............................................................................................................................. 8
Voltage conversion .................................................................................................................................... 8
Operating Controls .................................................................................................................................... 9
Installing/Changing Blade .......................................................................................................................... 9
Mounting the Fence ................................................................................................................................. 10
Adjustments ................................................................................................................................................ 10
Main Belt Tension .................................................................................................................................... 10
Gearbox Belt Tension .............................................................................................................................. 10
Feed Speed ............................................................................................................................................. 11
Fence Alignment ...................................................................................................................................... 11
Adjusting Blade and Roller Height ........................................................................................................... 11
Oiler Adjustment ...................................................................................................................................... 12
Operation..................................................................................................................................................... 12
Feeding Curved Wood ............................................................................................................................. 12
Maintenance ................................................................................................................................................ 13
Optional Accessory ..................................................................................................................................... 13
Troubleshooting (Electrical) ........................................................................................................................ 13
Troubleshooting (Mechanical) ..................................................................................................................... 14
Replacement Parts ...................................................................................................................................... 15
Infeed Body Assembly – Exploded View ................................................................................................. 16
Infeed Body Assembly – Parts List .......................................................................................................... 17
Arbor Spindle Assembly – Exploded View .............................................................................................. 18
Arbor Spindle Assembly – Parts List ....................................................................................................... 19
Motor and Drive Unit Assembly – Exploded View ................................................................................... 20
Motor and Drive Unit Assembly – Parts List ............................................................................................ 21
Laser Assembly (Optional Accessory) – Parts List & Exploded View ..................................................... 22
Roller and Frame Assembly – Exploded View ........................................................................................ 23
Roller and Frame Assembly – Parts List ................................................................................................. 24
Table and Stand Assembly – Exploded View ......................................................................................... 26
Parts List: Table and Stand Assembly .................................................................................................... 27
Electrical Control Panel (SLR12-443) – Parts List & Diagram ................................................................ 29
Electrical Connections – 3 Phase, 230V, 60Hz .......................................................................................... 30
Electrical Connections – 3 Phase, 460V, 60Hz .......................................................................................... 31
Preventive Maintenance .............................................................................................................................. 3 2 
Warranty and Service .................................................................................................................................. 33

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Introduction
This manual is provided by Powermatic covering the safe operation and maintenance procedures for a
Powermatic Model SLR12 Rip Saw. 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 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 reached at our web site: www.powermatic.com.
Specifications
Stock number .................................................................................................................................... 1791285
Main motor ...................................................................................... 15HP, 3Ph, 230/460V* (pre-wired 230V)
Feed motor ........................................................................................ 2HP, 3Ph, 230/460V* (pre-wired 230V)
Controls ................................................................................................................................... 220V Magnetic
Blade speed ................................................................................................................................... 4500 RPM
Feed speeds .................................................................................................................. 30-120 FPM variable
Arbor size ................................................................................................................................... 1" (25.4 mm)
Provided Blade size .................................................................................. Dia. 12" (305 mm) x 4.0mm x 48T
Cutting depth ........................................................................................................................... 3-7/8" (98 mm)
Maximum ripping width ............................................................................................................. 18" (460 mm)
Minimum thickness ..................................................................................................................... 3/8” (10 mm)
Pressure rollers ............................................................................................................................................. 5
Anti-kickback devices .................................................................................................................................... 2
V-belts ........................................................................................................................................................... 4
Table size ...................................................................................................... 35" x 55" (890 mm x 1397 mm)
Table height .............................................................................................................................. 32" (813 mm)
Dust Collection Port .................................................................................................................... 4" (102 mm)
Minimum CFM required ............................................................................................................................. 600
Shipping weight ................................................................................................................................ 2530 lbs.
Net weight ........................................................................................................................................ 2090 lbs.
Overall dimensions (LxWxH) ......................................................... 62" x 56" x 41" (1575 x 1422 x 1041 mm)
Shipping dimensions (LxWxH) ................................................. 62 x 45-1/2 x 66” (1575 x 1156x 1676.4 mm)
*Conversion to 460V power requires additional purchase and installation of 460V overload relays.
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 change specifications at any time and without
prior notice, without incurring obligations.

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Features
Figure 1

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Receiving
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 Rip Saw
is installed and running properly.
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.
Contents of crate:
1 Rip saw body
1 Rip fence
1 Blade
1 Toolbox containing (shown in Figure 2):
A – 1 grease gun
B – 1 set open-end wrenches
C – 1 set hex wrenches
D – 4 cast iron foot pads
E – 4 M16x80 leveling screws
E – 4 M16 hex nuts
F – 1 arbor wrench
G – 1 T-wrench
1 Instruction manual
1 Warranty card
Installation
Tools required for assembly:
forklift or hoist, with slings
open-end wrenches (provided)
hex wrenches (provided)
arbor wrench (provided)
T-wrench (provided)
NOTE: The terms “front”, “back”, “infeed side”
and “outfeed side” are explained on page 7.
1. Lift the machine with a hoist or forklift, using
slings through the lifting eyes on the
machine. Make sure the capacity of the
lifting unit is sufficient to lift this size
machine.
2. The rip saw should be located in an area
that is well-lit, with a sturdy, level floor and
enough space for loading and off-loading
stock and general servicing of the machine.
3. The rip saw can be bolted to the floor
through the holes at the four corners. If it will
not be bolted to the floor, the four cast iron
foot pads should be placed beneath the
corners, with the four M16 x 80 leveling
screws and four M16 nuts. See Figure 3.
Figure 2
Figure 3

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4. Place a level upon the machine table, and
adjust the screws over the foot pads as
necessary. When the machine is level,
tighten all four hex nuts against the
machine’s base.
Unpainted surfaces, such as the work table and
fence, 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, lacquer thinner, gasoline or
any flammable solvents. Do not use an abrasive
pad.
Control Box
Swing out the control box (Figure 4). Use the set
screws to control the tightness of the mounting
arm.
Grounding Instructions
Electrical connections must
be made by a qualified electrician in
compliance with state and local codes. The
machine must be properly grounded to help
prevent electrical shock and possible death.
A power plug is not provided with the SLR12.
You may either connect one, or "hard-wire" the
saw directly to your electrical panel provided
there is a disconnect near the machine for the
operator. Consult electrical schematic on pages
30 and 31 for further clarification of wiring setup.
This machine must be grounded. Grounding
provides a path of least resistance to 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.
Voltage conversion
The Rip Saw is prewired 230V, but may be
converted to 460V as follows. Connection
diagrams are located inside the motor junction
boxes. Similar diagrams can be found at the
back of this manual. Note: In case of
discrepancies, diagram on machine takes
precedence.
1. Arbor motor: Open junction box and
reconnect wires according to diagram.
2. Conveyor motor: Open junction box and
reconnect wires according to diagram.
3. Reconnect wire to transformer from 230V to
460V terminal.
Figure 4
Figure 5
Figure 6

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4. Replace 230V overload relay for main motor
with 460V overload relay (separate
purchase, p/n SLR12-611A). Set relay to
9A.
5. Replace 230V overload relay for conveyor
motor with 460V overload relay (separate
purchase SLR12-609AA). Set relay to 3A.
6. If using plug, replace with proper 460V plug.
Operating Controls
The buttons on the control panel are explained
in Figure 5. After making electrical connections,
the machine should be turned on to verify the
direction of rotation. The blade arbor should
rotate counterclockwise when viewed from front
of machine (Figure 6). If rotation is wrong, turn
off the machine, disconnect power and switch
any two of the three electrical leads.
IMPORTANT: The emergency stop button
(Figure 5) shuts down all operations on the
machine simultaneously. To release the
emergency stop button, twist it clockwise.
Installing/Changing Blade
1. Disconnect machine from power source.
2. Unscrew knurled knob on blade guard and
swing guard away, as shown in Figure 8.
3. Loosen the arbor lock lever (A, Figure 7)
and raise the arbor with the handwheel (B,
Figure 7) until the blade can slip on to the
arbor without interference from the
caterpillar.
4. Place the arbor wrench on the flat of the
arbor shaft. Place the T-wrench on the
screw head as shown (Figure 8). Hold the
shaft stationary with the arbor wrench while
loosening the screw.
5. Remove screw and flange and install new
blade, making sure to orient it properly - the
teeth at bottom of blade should face toward
infeed side of machine (as shown in Figure
6).
6. Replace flange and screw, and tighten
screw with the T-wrench while holding the
arbor wrench stationary.
7. Lower the blade down into the inserts on the
caterpillar track (blade teeth should be
0.5mm to 1.5mm lower than caterpillar
surface).
The blade teeth should not
contact the bottom of the inserts.
Figure 7
Figure 8
Figure 9

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8. Close blade guard and tighten knurled knob.
Mounting the Fence
1. Slide the fence casting onto the end of the
guide bar while pulling back the main lock
handle (Figure 9).
2. The fence is moved along the guide bar by
rotating the handwheel. Use the main lock
handle to secure the fence casting in place.
3. Loosen the other lock handle and slide the
aluminum fence onto the casting. Tighten
the handle.
Adjustments
Main Belt Tension
1. Disconnect machine from power source.
2. Open back panels to expose the motor,
pulleys and belts, as shown in Figure 10.
Loosen hex nut (Fig. 11) and turn the
adjustment screw as needed to adjust the
tension. Proper tension is achieved when
there is a small amount of deflection by
using moderate finger pressure on the belt
midway between the pulleys.
3. Tighten hex nut (Fig. 11) and replace
panels.
Gearbox Belt Tension
1. Disconnect machine from power source.
2. Open lower back panel and loosen nuts on
the motor base (Fig. 12). Adjust motor base
up or down as needed, then tighten nuts.
Proper tension is achieved when there is a
small amount of deflection by using finger
pressure on the belt midway between the
pulleys.
3. Replace panels.
Figure 10
Figure 11
Figure 12