woodmizer MKIII User manual

Debarker Option
Safety, Installation, Operation,
Maintenance & Parts Manual
MKIII for LT60/70 DC rev. A.00 - A.04
(Except LT70 Super Sawmills*)
*See Operator’s and Parts Manuals for Debarker Information
Safety is our #1 concern! Read and understand
all safety information and instructions before oper-
ating, setting up or maintaining this machine.
January 2016
Form #2088

©2019
Printed in the United States of America, all rights reserved. No part of this man-
ual may be reproduced in any form by any photographic, electronic, mechanical
or other means or used in any information storage and retrieval system without
written permission from
Wood-Mizer
8180 West 10th Street
Indianapolis, Indiana 46214
California
Proposition 65 Warning
WARNING: Breathing gas/diesel engine exhaust exposes you to chemicals known to
the State of California to cause cancer and birth defects or other reproductive harm.
xAlways start and operate the engine in a well-ventilated area.
xIf in an enclosed area, vent the exhaust to the outside.
xDo not modify or tamper with the exhaust system.
xDo not idle the engine except as necessary.
For more information go to www.P65warnings.ca.gov.
WARNING: Drilling, sawing, sanding or machining wood products can expose you to
wood dust, a substance known to the State of California to cause cancer. Avoid inhaling
wood dust or use a dust mask or other safeguards for personal protection.
For more information go to www.P65Warnings.ca.gov/wood.

Table of Contents Section-Page
Table of Contents WMdoc032619 iii
TOC
SECTION 1 SAFETY 1-1
1.1 Installation and Maintenance..................................................................1-1
1.2 Operation and Towing............................................................................1-2
SECTION 2 DEBARKER INSTALLATION 2-1
2.1 Debarker Installation ..............................................................................2-1
2.2 Harness Installation ................................................................................2-4
2.3 Control Component Installation (Non-Remote Mills) ...........................2-7
2.4 Control Component Installation (Remote Mills)..................................2-14
SECTION 3 ALIGNMENT 3-1
SECTION 4 OPERATION AND MAINTENANCE 4-1
4.1 Travel Lock Pin (Rev. A.04+)................................................................4-1
4.2 Travel Lock Pin Operation (Prior to Rev. A.04)....................................4-1
4.3 Control Overview ...................................................................................4-3
4.4 Operation ................................................................................................4-5
4.5 Maintenance ...........................................................................................4-7
4.6 Troubleshooting......................................................................................4-9
SECTION 5 ELECTRICAL INFORMATION 5-1
5.1 Electrical Symbol Diagram (Non-Remote) ............................................5-1
5.2 Electrical Symbol Diagram (Remote) ....................................................5-2
5.3 Electrical Component List......................................................................5-3
5.4 Electrical Wiring Diagram (non-Remote Sawmills) ..............................5-4
LT70HD Rev. B6.07+.....................................................5-4
5.5 Electrical Wiring Diagram (Remote Sawmills) .....................................5-5
LT70HD RemoteRev. B6.07+ ...............................................5-5
5.6 Electrical Wiring Diagram (DC Wireless Sawmills) .............................5-7
LT70HD DC WirelessRev. B6.07+.......................................5-7
SECTION 6 DEBARKER PARTS 6-1
6.1 Mechanical Assembly (DC) ...................................................................6-1
6.2 Frame Assembly (DC)............................................................................6-2
6.3 In/Out Motor Drive Assembly................................................................6-4
6.4 Blade Motor Assembly (DC)..................................................................6-6
6.5 Blade Housing Assembly .......................................................................6-7
6.6 Debarker Control Assembly ...................................................................6-8
INDEX I

Safety
Installation and Maintenance
1
1-1 MK60DB01doc032619 Safety
SECTION 1 SAFETY
This symbol calls your attention to instructions concerning your personal safety. Be sure
to observe and follow these instructions. This symbol accompanies a signal word. The
word DANGER indicates an imminently hazardous situation which, if not avoided, will
result in death or serious injury. WARNING suggests a potentially hazardous situation
which, if not avoided, could result in death or serious injury. CAUTION refers to potentially
hazardous situations which, if not avoided, may result in minor or moderate injury to per-
sons or equipment. Read all safety instructions before operating this equipment and
observe all safety warnings!
1.1 Installation and Maintenance
DANGER! On electric mills, hazardous voltage inside the
disconnect box, starter box, and at the electric motor can
cause shock, burns, or death. Disconnect and lock out
power supply before performing debarker installation! Fol-
low all applicable electrical codes.
DANGER! Make sure all electrical installation, service
and/or maintenance work is performed by a qualified elec-
trician and is in accordance with applicable electrical codes.
Failure to do so will result in serious injury or death.
DANGER! Before performing any service to this equip-
ment, turn the key to the OFF position, remove the key, and
disconnect the sawmill battery ground terminal. Failure to
do so will result in serious injury or death.
WARNING! Before replacing the debarker blade, move the
sawmill blade guide arm in front of the sawmill blade to
cover the blade teeth. Failure to do so may result in serious
injury or death.

Safety
Operation and Towing
Safety MK60DB01doc032619 1-2
1
1.2 Operation and Towing
DANGER! Make sure all guards and covers are in place
and secured before operating the debarker option. Failure
to do so may result in serious injury.
DANGER! Keep all persons out of the path of moving
equipment when operating the debarker. Failure to do so
will result in serious injury.
DANGER! Always remove the key from the control panel
before preparing the debarker for towing. Failure to do so
may result in serious injury.
WARNING! Debarker is ON when warning light is on. DO
NOT disconnect the warning light. Doing so may result in
serious injury.
WARNING! If the debarker continues to run with the key
switch in the OFF position, remove the negative battery ter-
minal from the battery post.
DO NOT continue to operate the mill if the main key switch
does not control debarker operation. Doing so could result
in serious injury. Call Wood-Mizer customer service for
more information.

Debarker Installation
Debarker Installation
2
2-1 MK60DB01doc032619 Debarker Installation
SECTION 2 DEBARKER INSTALLATION
DANGER! On electric mills, hazardous voltage inside the
disconnect box, starter box, and at the electric motor can
cause shock, burns, or death. Disconnect and lock out
power supply before performing debarker installation! Fol-
low all applicable electrical codes.
DANGER! Before performing any service to this equip-
ment, turn the key to the OFF (0) position, remove the key,
and disconnect the sawmill battery ground terminal. Failure
to do so will result in serious injury or death.
CAUTION! Due to various design changes and past retro-
fits and options, you should very carefully look your mill
over to determine Debarker compatibility before beginning
Debarker installation.
2.1 Debarker Installation
DANGER! Always disengage the blade and shut off the
sawmill engine before installing the debarker. Failure to do
so will result in serious injury.
IMPORTANT! Sawmills are equipped with pre-drilled
Debarker mounting holes. Verify hole locations before
beginning Debarker installation. Proper hole location is
imperative for safe and effective Debarker operation.

Debarker Installation
Debarker Installation
Debarker Installation MK60DB01doc032619 2-2
2
See Figure 2-1. The debarker wiring is pre-routed and secured at the debarker mounting
location with a guard. Remove the guard and route the wiring through the grommet in the
saw head. Note the location of the two debarker mounting holes.
1. Assemble the debarker to the sawmill saw head. Align the mounting block holes and the
two debarker mounting holes in the saw head. Use the provided 1/2-13 x 4" hex head
bolts and 1/2" split lock washers to secure in place. Make sure the debarker is square to
the saw head before tightening.
2. Assemble the debarker cutting head to the mount plate on the frame.
Use the four provided 5/16-18 x 3/4" bolts and 5/16” split lock washers to mount the cut-
ting head to the debarker frame. Use the lower set of four holes in the head mounting
plate. The upper set of holes are provided in the event the cutting head needs to be
adjusted further down than the slotted motor mount holes will allow.
See Figure 2-2.
FIG. 2-1
Remove Debarker
Wiring Storage Box
From Saw Head
Route Debarker
Wiring Through
Grommet
Debarker
Mounting
Holes
600152-1

Debarker Installation
Debarker Installation
2
2-3 MK60DB01doc032619 Debarker Installation
3. Install the blade guard bracket and flexible debris guard to the debarker head with two
1/4" flat washers, lock washers, and 1/4-20 x 1" hex head bolts. Be sure the bottom of the
debris guard is even with the bottom of the debarker blade.
See Figure 2-3.
FIG. 2-2 DC DEBARKER
FIG. 2-3 DC DEBARKER
600478-6
5/16-18 x 3/4"
Hex head bolts (4)
5/16" Lock washers (4)
Cutting head
600478-7
Debris
Guard
Guard
Bracket
1/4-20 x 1" Hex
head bolt (2)
1/4" Lock
washer (2)
1/4" Flat
washer (2)
Adjust bottom of debris guard
even with bottom of debarker blade

Debarker Installation
Harness Installation
Debarker Installation MK60DB01doc032619 2-4
2
2.2 Harness Installation
DANGER! Before performing any service to this equip-
ment, turn the key to the OFF (0) position, remove the key,
and disconnect the sawmill battery ground terminal. Failure
to do so will result in serious injury or death.
IMPORTANT! Avoid pinch and pivot points, unnecessary
wire bending and open spaces where the wire could get
caught by a log, etc. If you have any questions, call
Wood-Mizer customer service.
1. Route the harnesses through the saw head frame hole as shown. Continue routing the
long blade motor wire harness (large wires/ring terminals) inside the debarker frame
through the three holes with grommets.
See Figure 2-4.
FIG. 2-4
Secure In/Out Motor
Wires with Wire Ties
Blade Motor
Wires
Warning Light
Wires
Connect In/Out Motor Cable
To Debarker Harness
Install Boots Over
Light And Motor Wires.
Connect To Debarker
Blade Motor ,
as shown
regardless of + - label.
600480-4D
Install Ring Terminals
to Warning Light Wires.

Debarker Installation
Harness Installation
2
2-5 MK60DB01doc032619 Debarker Installation
2. Cut the conduit of the in/out motor wire harness to expose the quick connect terminals.
Remove the rubber cap from the in/out motor and install the removed conduit around the
in/out motor wires. Route the wires down the side of the in/out motor to the quick con-
nects. Be sure to leave slack in the harness to avoid kinking and bending as the debarker
moves in and out. Replace the motor cap and secure the harness to the in/out motor by
connecting two wire ties together and wrapping around the motor.
3. Connect the in/out motor wire harness to the in/out motor saw head harness. Secure the
harness to the blade motor frame with wire ties.
4. Route the warning light harness on top of the blade motor pivot arm to the debarker blade
motor. Secure the warning light wires to the pivot arm with wire ties as shown above.
See Figure 2-5.
5. Remove the top nuts from each of the motor terminals.
6. Route the black wires from both the motor and warning light harnesses through one of the
rubber boots and the red motor and light wires through the other rubber boot.
FIG. 2-5 MKIII ONLY
Wire tie
Install rubber
boots and ring
terminals
600478-8
Connect the red and black
wires in this orientation,
regardless of a positive
or negative label
Red wires
Black wires
MKIII
ONLY

Debarker Installation
Harness Installation
Debarker Installation MK60DB01doc032619 2-6
2
7. Connect the red motor and light wires to the left motor terminal and replace the terminal
nut to secure the wires. Reference figure 2-5.
IMPORTANT! Make sure that the ring terminals do not
touch the motor body.
8. Connect both black wires to the right motor terminal and replace the terminal nut to
secure the wires. Reference figure 2-5.
IMPORTANT! Make sure that the ring terminals do not
touch the motor body.
9. Slide the rubber boots over the motor terminal posts to protect the connections.

Debarker Installation
Control Component Installation (Non-Remote Mills)
2
2-7 MK60DB01doc032619 Debarker Installation
2.3 Control Component Installation (Non-Remote Mills)
DANGER! On electric mills, hazardous voltage inside the
disconnect box, starter box, and at the electric motor can
cause shock, burns, or death. Disconnect and lock out
power! Follow all applicable electrical codes.
DANGER! Before performing any service to this equip-
ment, turn the key to the OFF (0) position, remove the key,
and disconnect the sawmill battery ground terminal. Failure
to do so will result in serious injury or death.
See Section 2.4 if assembling the Debarker option to a sawmill equipped with the remote
operation option. See SECTION 4 for the appropriate wiring diagram to aid in installation.
1. Remove the side, front and rear panels (leave wire connections) from the control box.
2. Locate the solenoid mounting studs in the control box. Place the solenoid on the mount-
ing studs and place the diode assembly ring terminal over one of the studs. Use the two
1/4-20 self-locking nuts provided to secure in place.
See Figure 2-6.
FIG. 2-6
Mounting Studs
3H0377B
Self-Locking Nuts
Debarker Solenoid

Debarker Installation
Control Component Installation (Non-Remote Mills)
Debarker Installation MK60DB01doc032619 2-8
2
3. Remove the two small bolts and nuts and the one large bolt and nut from the back of the
control box.
4. Locate the bundle of wires on the floor of the sawmill control box. Make sure the large
black #24 wire is connected to the rear ground stud. Connect the large red #23 wire to the
empty terminal on the provided 70 amp breaker. Do not overtighten this connection.
Overtightening could cause component breakage.
5. Install the 70 amp breaker and rubber boot to the large hole on the back of the control
box. Be sure the breaker terminals do not touch any other components or wires inside the
control box.
6. Install the provided 15 amp breaker to the two small holes in the back of the control box
(position the breaker so the reset tab is near the rear opening of the control box). Use the
existing screws and nuts (removed earlier) to secure in place.
See Figure 2-7.
FIG. 2-7 LT60HD/70HD (BEFORE 9/04)
70 Amp Breaker
Rubber Boot
15 Amp Breaker
Mounting Screws
Mounting Nuts
Rear Ground Stud
3H0587
23
24

Debarker Installation
Control Component Installation (Non-Remote Mills)
2
2-9 MK60DB01doc032619 Debarker Installation
FIG. 2-7 LT60HD/70HD(AFTER 9/04)
Mounting
Screws
15 Amp Breaker
70 Amp Breaker
Mounting Nuts
Rubber
Boot
Rear Ground Stud
24
23
600171-4B

Debarker Installation
Control Component Installation (Non-Remote Mills)
Debarker Installation MK60DB01doc032619 2-10
2
7. Using the back side of the front panel for a guideline, cut out holes in the front panel lexan
decal for the debarker switches. Install the provided toggle switches, 1/16" nylon wash-
ers, and rubber boots in place as shown.
See Figure 2-8.
FIG. 2-8
3H0380B
On/Off Switch
In/Out Switch
Rubber Boots
Nylon Washers

Debarker Installation
Control Component Installation (Non-Remote Mills)
2
2-11 MK60DB01doc032619 Debarker Installation
8. Connect the red #205 wire from the 15 amp breaker to the ACC post on the key switch.
9. Make sure the red #206 wire from the 15 amp breaker to the debarker in/out switch is
connected.
10. Connect the red #202 wire from the debarker solenoid to the DBKR terminal on the LED
board. NOTE: If the control box is not equipped with the LED board, remove the red #202
wire from the debarker solenoid.
11. Make sure the red #201 wire from the small terminal on the debarker solenoid to the
debarker on/off switch is connected.
12. Connect the red #203 wire from debarker solenoid to the BAT post of the key switch.
13. Make sure the red #204 wire from the bottom debarker solenoid terminal to the 70 Amp
breaker is connected.
See Figure 2-9. Box housing removed for clarity. Only wires referred to above are shown.
FIG. 2-9
3H0605-2
Debarker
In/Out Switch
Debarker
On/Off
Switch
LED
Circuit Board
Key Switch
15 Amp
Circuit Breaker
70 Amp
Circuit Breaker
Debarker
Solenoid
206
204
203
201
202
205
Diode
Assembly

Debarker Installation
Control Component Installation (Non-Remote Mills)
Debarker Installation MK60DB01doc032619 2-12
2
14. Connect the red #200 wire from the debarker on/off switch to the sawmill control:
LT60HD/70HD Wireless Models: Connect red wire #200 to the existing short red wire
connected to terminal #T13 of the wireless interface control board. Use the provided #10
screw, washer and lock nut to connect the wires. Wrap the connection with the provided
piece of rubber tubing and secure with a tie wrap.
LT60HD/70HD Models between 9/04 and 12/08: Connect red wire #200 to the existing
short red wire connected to terminal #3 of the power feed drum switch. Use the provided
#10 screw, washer and lock nut to connect the wires. Wrap the connection with the pro-
vided piece of rubber tubing and secure with a tie wrap.
All LT60HD/70HD Models before 9/04 and after 1/09: Connect red wire #200 to termi-
nal #2 of the power feed drum switch. NOTE: Some sawmills are equipped with a short
red wire connected to terminal #2 of the power feed drum switch. If so, connect debarker
wire #200 to the end of the short wire with the provided #10 screw, washer and lock nut.
Wrap the connection with the provided piece of rubber tubing and secure with a tie wrap.
If no short wire exists, connect debarker wire #200 directly to power feed drum switch ter-
minal #2.
See Figure 2-10.
FIG. 2-10
Rubber
Tubing
Screw
3H0344-2
Lock Nut
Flat Washer
Debarker wire #200
6” Wire from
Power Feed Drum
Switch Terminal

Debarker Installation
Control Component Installation (Non-Remote Mills)
2
2-13 MK60DB01doc032619 Debarker Installation
15. Connect the black #207 wire from the debarker in/out switch to the rear ground stud.
16. Locate the bundle of wires on the floor of the sawmill control box. Make sure the debarker
in/out switch is oriented horizontally as shown.
17. Connect the small red #21 wire to the debarker in/out switch bottom left terminal.
18. Connect the small black #22 wire to the debarker in/out switch top left terminal.
See Figure 2-11. Box housing removed for clarity. Only wires referred to above are
shown.
19. Reinstall the front and rear panels, side panel, and control box top cover to the control
box.
FIG. 2-11
3H0605-3C
Debarker
In/Out Switch
Debarker
On/Off
Switch
Rear
Ground Stud
(Location
varies by model)
21
22
207

Debarker Installation
Control Component Installation (Remote Mills)
Debarker Installation MK60DB01doc032619 2-14
2
2.4 Control Component Installation (Remote Mills)
DANGER! On electric mills, hazardous voltage inside the
disconnect box, starter box, and at the electric motor can
cause shock, burns, or death. Disconnect and lock out
power! Follow all applicable electrical codes.
DANGER! Before performing any service to this equip-
ment, turn the key to the OFF (0) position, remove the key,
and disconnect the sawmill battery ground terminal. Failure
to do so will result in serious injury or death.
See Section 2.3 if assembling the Debarker option to a sawmill not equipped with the
remote operation option. See SECTION 4 for a complete wiring diagram to aid in installa-
tion.
Remote Power Box Component Installation
See Figure 2-12.
1. Open the remote power junction box door.
2. Install the debarker solenoid next to the existing solenoid with the two bolts and nuts pro-
vided in the bottom of the box. Place the diode ring terminal over one of the solenoid
mounting bolts before securing with the nuts.
3. Locate the large red #23 wire in the remote power box and connect it to the empty termi-
nal on the provided 70 Amp breaker. Do not overtighten this connection. Overtightening
could cause component breakage.
4. Remove the bolt and nut from the hole in the side of the remote power box and install the
70 Amp breaker and rubber boot to the hole. Be sure the breaker terminals do not touch
any other components or wires inside the control box.
5. Make sure the large black #24 wire is connected to the side ground stud.
6. Locate the small red #33 wire from connector J1 terminal #16. Connect it to the small, top
terminal on the debarker solenoid.
7. Connect large red #203 wire from the large bottom terminal of the debarker solenoid to
the accessory solenoid:
100A Solenoid before 5/03: Connect red wire #203 to the large bottom terminal.

Debarker Installation
Control Component Installation (Remote Mills)
2
2-15 MK60DB01doc032619 Debarker Installation
200A Solenoid after 5/03: Connect red wire #203 to the large terminal closest to the
debarker solenoid.
Only wires referred to above are shown.
8. Close the remote power box door. Engage the door latch and tighten with a hex key to
properly seal the box.
FIG. 2-12
23
24
204
203
SeeDetail
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
J1
J2
3H0606-1
203
33
100A
Accessory
Solenoid
Debarker
Solenoid
70 Amp
Circuit
Breaker
Diode
Assembly
Rubber
Boot
Left Ground
Stud
200A Accessory Solenoid
Connector
Detail