woodmizer LT70AC Manual instruction

Wood-Mizer® Sawmill
Safety, Setup, Operation
& Maintenance Manual
LT70AC Remote rev. A2.02
Safety is our #1 concern! Read and understand all
safety information and instructions before operating,
setting up or maintaining this machine.
October 2004
Form #996
!

Table of Contents Section-Page
2 25doc042607 Table of Contents
SECTION 1 SAFETY 1-II
1.2 Safety Instructions ....................................................................................................1-iii
SECTION 2 SERVICING THE SAWMILL 2-1
2.1 If You Need To Order Parts ...................................................................................... 2-1
2.2 Customer and Sawmill Identification........................................................................ 2-2
2.3 If You Need Service .................................................................................................. 2-4
SECTION 3 SETUP 3-1
3.1 Site Preparation ......................................................................................................... 3-1
3.3 Replacing The Blade ................................................................................................. 3-4
3.4 Tensioning The Blade................................................................................................ 3-5
3.5 Tracking The Blade ................................................................................................... 3-6
3.6 Starting The Motor .................................................................................................... 3-9
3.7 Initial Control Programming ................................................................................... 3-10
SECTION 4 OPERATION 4-1
4.1 Control Overview ...................................................................................................... 4-1
4.2 Controlling The Sawmill ........................................................................................... 4-4
SECTION 5 MAINTENANCE 5-1
5.1 Wear Life................................................................................................................... 5-1
5.2 Blade Guides ............................................................................................................. 5-2
5.3 Sawdust Removal ...................................................................................................... 5-4
5.4 Carriage Track, Wiper & Scrapers ............................................................................ 5-5
5.5 Vertical Mast Rails .................................................................................................... 5-6
5.6 Miscellaneous ............................................................................................................ 5-7
5.7 Drive Belt Adjustment............................................................................................... 5-7
5.8 Hydraulic System ...................................................................................................... 5-9
5.9 Up/Down System..................................................................................................... 5-10
5.10 Power Feed System ................................................................................................. 5-12
SECTION 6 TROUBLESHOOTING GUIDE 6-1
6.1 Sawing Problems ....................................................................................................... 6-1
6.2 Power Feed Problems ................................................................................................ 6-4
6.3 Hydraulic Problems ................................................................................................... 6-6
6.4 Motor And Drive Pulleys Alignment (AC Sawmills Only) .................................... 6-10
6.5 Power Feed Mechanical Test................................................................................... 6-11
6.6 Hydraulic Pressure Test........................................................................................... 6-12

Table of Contents Section-Page
Table of Contents 25doc042607 3
SECTION 7 SAWMILL ALIGNMENT 7-1
7.1 Routine Alignment Procedure ................................................................................... 7-1
7.2 Align Side Supports................................................................................................. 7-14
7.3 Complete Alignment Procedure .............................................................................. 7-15
SECTION 8 SPECIFICATIONS 8-1
8.1 Log Capacity ............................................................................................................. 8-1
8.2 Overall Dimensions ................................................................................................... 8-1
8.3 Motor Specifications ................................................................................................. 8-2
8.4 Chains ........................................................................................................................ 8-3
8.5 Hydraulic System ...................................................................................................... 8-3
8.6 Belt Sizes ...................................................................................................................8-3
8.7 Blade Sizes ................................................................................................................ 8-4
SECTION 9 HYDRAULIC SYSTEM 9-1
9.1 Hydraulic Hoses, LT70 Remote ................................................................................ 9-1
SECTION 10 ELECTRICAL INFORMATION 10-1
10.1 Electrical Component List....................................................................................... 10-1

i 60HDdoc100206 About This Manual
ABOUT THIS MANUAL
This manual is to replace or to be used with all previous information received on the
Wood-Mizer®* sawmill. All future mailings will be an addition to or a revision of individual
sections of this manual as we obtain new information.
The information and instructions given in this manual do not amend or extend the limited
warranties for the equipment given at the time of purchase.
For general information regarding Wood-Mizer and our “Forest to Final Form” products,
please refer to the All Products Catalog in your support package.
*Wood-Mizer®is a registered trademark of Wood-Mizer Products, Inc.
Sawmill U.S. Patent Nos.: 4,559,858, 4,878,411 & 4,930,386
Brevet au Canada Nos.: 1,200,180 & 1,211,684
MILL COMPONENTS

Safety Symbols
300doc100206 1-ii
1
SECTION 1 SAFETY
1.1 Safety Symbols
The following symbols and signal words call your attention to instructions concerning your
personal safety. Be sure to observe and follow these instructions.
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 or
damage to equipment.
IMPORTANT! indicates vital information.
NOTE: gives helpful information.
Warning stripes are placed on areas where a single decal
would be insufficient. To avoid serious injury, keep out of
the path of any equipment marked with warning stripes.
!

Safety
Safety Instructions
1
1-iii 300doc100206 Safety
1.2 Safety Instructions
NOTE: ONLY safety instructions regarding personal injury are listed in this section.
Caution statements regarding only equipment damage appear where applicable
throughout the manual.
OBSERVE SAFETY INSTRUCTIONS
IMPORTANT! Read the entire Operator's Manual before operating
the sawmill. Take notice of all safety warnings throughout this
manual and those posted on the machine. Keep this manual with
this machine at all times, regardless of ownership.
Also read any additional manufacturer’s manuals and observe any
applicable safety instructions including dangers, warnings, and
cautions.
Only persons who have read and understood the entire operator's
manual should operate the sawmill. The sawmill is not intended for
use by or around children.
IMPORTANT! It is always the owner's responsibility to comply with
all applicable federal, state and local laws, rules and regulations
regarding the ownership and operation of your Wood-Mizer
sawmill. All Wood-Mizer mill owners are encouraged to become
thoroughly familiar with these applicable laws and comply with
them fully while using the mill.
!

Safety
Safety Instructions
Safety 300doc100206 1-iv
1
WEAR SAFETY CLOTHING
WARNING! Secure all loose clothing and jewelry before operating
the sawmill. Failure to do so may result in serious injury or death.
WARNING! Always wear gloves and eye protection when handling
bandsaw blades. Changing blades is safest when done by one
person! Keep all other persons away from area when coiling,
carrying or changing a blade. Failure to do so may result in serious
injury.
WARNING! Always wear eye, ear, respiration and foot protection
as well as safety clothing when operating or servicing the sawmill.
KEEP SAWMILL AND AREA AROUND SAWMILL CLEAN
DANGER! Maintain a clean and clear path for all necessary
movement around the mill and lumber stacking areas. Failure to do
so will result in serious injury.

Safety
Safety Instructions
1
1-v 300doc100206 Safety
HANDLE FUEL/LUBRICANTS SAFELY
WARNING! Use ONLY water or approved additives with the lube
system. Never use flammable fuels or liquids. If these types of
liquids are necessary to clean the blade, remove it and clean with
a rag. Failure to do so may result in serious injury or death.
DISPOSE OF SAWING BY-PRODUCTS PROPERLY
IMPORTANT! Always properly dispose of all sawing by-products,
including sawdust and other debris.
CAUTIONS FOR SAWMILL SETUP
WARNING! Securely fasten the feet of the sawmill to the floor
before operating the sawmill. Failure to do so may result in serious
injury or death.
!

Safety
Safety Instructions
Safety 300doc100206 1-vi
1
CHECK SAWMILL/BLADES BEFORE OPERATION
DANGER! Make sure all guards and covers are in place and
secured before operating the sawmill. Failure to do so may result in
serious injury.
WARNING! Blade guide alignment is essential for optimal cutting
performance, blade life and safety. Failure to check and maintain
proper blade guide alignment will result in stress cracks forming in
the blade. These cracks will lead to premature blade breakage.
If the blade breaks during operation and the blade has multiple
stress cracks, the blade could shatter into several pieces and
escape from the protective guards of the sawmill. Small blade
pieces projected into the area around the sawmill creates a safety
hazard for the operator and any bystanders surrounding the mill.
WARNING! DO NOT use blades with stress cracks. Blades with
stress cracks can shatter causing bodily injury and/or machine
damage.
KEEP PERSONS AWAY
DANGER! Keep all persons out of the path of moving equipment
and logs when operating sawmill or loading and turning logs.
Failure to do so will result in serious injury.
DANGER! Always be sure all persons are out of the path of the
blade before starting the motor. Stop the motor immediately when
any person is nearby the sawmill. Failure to do so will result in
serious injury.
DANGER! To make access to the sawmill difficult for bystanders,
mount a fence around the machine. The fence should be 1.8 m
high and should be mounted at least 1.4 m away from the sawmill.

Safety
Safety Instructions
1
1-vii 300doc100206 Safety
KEEP HANDS AWAY
DANGER! Always shut off the sawmill and wait until the blade
wheels have come to a complete stop before changing the blade.
Failure to do so will result in serious injury.
DANGER! Always keep hands away from moving bandsaw blade.
Failure to do so will result in serious injury.
DANGER! Always be aware of and take proper protective
measures against rotating shafts, pulleys, fans, etc. Always stay
a safe distance from rotating members and make sure that loose
clothing or long hair does not engage rotating members resulting in
possible injury.
WARNING! Always stop the blades when the sawmill is not cutting.
Failure to do so may result in serious injury.
WARNING! Do not for any reason adjust the drive belts with the
motor running. Doing so may result in serious injury.
WARNING! Always keep clear of exiting sawdust. Keep hands,
feet and any other objects away from the sawdust chute when
operating sawmill. Failure to do so may result in serious injury.

Safety
Safety Instructions
Safety 300doc100206 1-viii
1
USE PROPER PROCEDURE WHEN CONDUCTING ELECTRICAL SAFETY CHECKS
AND MAINTENANCE
DANGER! Make sure all electrical installation, service and/or
maintenance work is performed by a qualified electrician and is in
accordance with applicable electrical codes.
DANGER! Hazardous voltage inside the electric sawmill
disconnect box, starter box, and at the motor can cause shock,
burns, or death. Disconnect and lock out power supply before
servicing! Keep all electrical component covers closed and
securely fastened during mill operation.
WARNING! Consider all electrical circuits energized and
dangerous.
WARNING! Never assume or take the word of another person that
the power is off; check it out and lock it out.
WARNING! Do not wear rings, watches, or other jewelry while
working around an open electrical circuit.
WARNING! Before performing service near moving parts such as
blades, pulleys, motors, belts and chains, first turn the key switch
to the OFF (#0) position and remove the key. If the key is turned on
and moving parts activated, serious injury may result.
WARNING! Remove the blade before performing any service to
the motor or sawmill. Failure to do so may result in serious injury.

Safety
Safety Instructions
1
1-ix 300doc100206 Safety
KEEP SAFETY LABELS IN GOOD CONDITION
IMPORTANT! Always be sure that all safety decals are clean and
readable. Replace all damaged safety decals to prevent personal
injury or damage to the equipment. Contact your local distributor,
or call your Customer Service Representative to order more
decals.
IMPORTANT! If replacing a component which has a safety decal
affixed to it, make sure the new component also has the safety
decal affixed.
USE CAUTION WHEN WORKING WITH HEAVY LOGS
WARNING! Always make sure log is clamped securely before
sawing. Failure to do so may result in serious injury or death.
AUTOMATIC BOARD RETURN SAFETY
DANGER! Keep all persons out of the path of returning boards.
Failure to do so will result in serious injury.
POWER FEED AND UP/DOWN SYSTEM SAFETY
DANGER! If leaving the blade engaged for maximum production
rates, make sure the off-bearer stays out of the path of the blade.
Failure to do so will result in serious injury or death.
CAUTION! Be sure the transducer sensor is adjusted properly
before raising or lowering the saw head against the upper or lower
travel limits. Failure to do so may result in damage to the machine.
!
!

Servicing The Sawmill
If You Need To Order Parts
Servicing The Sawmill 60HDdoc100206 2-1
2
SECTION 2 SERVICING THE SAWMILL
Wood-Mizer is committed to providing you with the latest technology, best quality and
strongest customer service available on the market today. We continually evaluate our
customers’ needs to ensure we’re meeting current wood-processing demands. Your com-
ments and suggestions are welcome.
2.1 If You Need To Order Parts
From Europe call our European Headquarters and Manufacturing Facility in Kolo, Poland
at [phone] or [phone]. From the continental U.S., call our toll-free Parts
hotline at 1-800-448-7881. Please have the vehicle identification number and your cus-
tomer number ready when you call. Wood-Mizer will accept these methods of payment:
Visa, Mastercard, or Discover
COD
Prepayment
Net 15 (with approved credit)
Be aware that shipping and handling charges may apply. Handling charges are based on
size and quantity of order. In most cases, items will ship on the day they are ordered.
Second Day and Next Day shipping are available at additional cost.

Servicing The Sawmill
Customer and Sawmill Identification
2
2-2 60HDdoc100206 Servicing The Sawmill
2.2 Customer and Sawmill Identification
Each Wood-Mizer sawmill has a model number and a 17-digit Vehicle Identification Num-
ber (VIN). In addition, when you pick up your mill, you will receive a customer number.
These three numbers will help expedite our service to you. Please locate them now and
write them below so you have quick, easy access to them. See the following figures for
model number and V.I.N. descriptions and locations.
(To be filled in by purchaser)
Mill Model ___________________
Mill VIN ___________________
Customer No. ___________________
See below for a description of the V.I.N.
LT70 E25
Basic Sawmill I.D. Engine/Motor
Configuration
MODEL NUMBER DESCRIPTION
Company Identification Number
456=Wood-Mizer Indiana
Weight Class; A=Under 3,000 lbs B=3,001-4,000 lbs
C=4,001-5000 lbs
Product No.: 1=LT15, 2=LT20, 4=LT40 Series,
7=LT70 Series
Length of the Trailer;
20=20 Ft., 24=24’, 35=35’
Number of axles on the trailer
Check Digit
Add all the numbers and divide by 11
Year of Manufacture;
Y=2001, Z=2002, A=2003, B=2004, C=2005, D=2006
State of Manufacture
N=Indiana, P=Poland
Month of Manufacture
A=January, B=February, C=March, etc...
Revision Level
Sequence Number
Ranging from 000-999
End of 17-Digit VIN
Revision Level (Repeated)
Two-Digit Minor Revision Level
456 A 7 24 1 X S N A F9 017 F9 .01
V.I.N. DESCRIPTION.

Servicing The Sawmill
Customer and Sawmill Identification
Servicing The Sawmill 60HDdoc100206 2-3
2
The model number and V.I.N. can be found in the following locations.
MODEL NUMBER AND V.I.N. LOCATIONS
1
2

Servicing The Sawmill
If You Need Service
2
2-4 60HDdoc100206 Servicing The Sawmill
2.3 If You Need Service
From Europe call our European Headquarters and Manufacturing Facility in Kolo, Poland
at [phone] or [phone]. From the continental U.S., call us toll-free at
1-800-525-8100. Ask to speak with a Customer Service Representative. Please have
your vehicle identification number and your customer number ready when you call. The
Service Representative can help you with questions about alignment of your mill, blade
sharpening, or cutting a particular species of wood. He also can schedule you for a ser-
vice call.
Office Hours: All times are Eastern Standard Time. Please remember that Indiana does
not go on Daylight Savings Time in the summer.
IMPORTANT! Read the entire Operator's Manual before
operating the sawmill. Take notice of all safety warnings
throughout this manual and those posted on the machine.
Keep this manual with this machine at all times, regardless
of ownership.
Country Monday - Friday Saturday Sunday
U.S., Indiana 8 a.m. to 5 p.m. 8 a.m. to 4 p.m. Closed
Poland 8 a.m. to 4:30 p.m. 8 a.m. to 1 p.m. Closed

SETUP
Site Preparation
SETUP doc100206 3-1
3
SECTION 3 SETUP
3.1 Site Preparation
IMPORTANT! This information is provided so that you may
have your site prepared for installation of your electric
sawmill. In order to properly install your sawmill, you need
to:
1. Prepare a firm, level area where the sawmill can be anchored. There should be
enough room around the sawmill for operators, sawdust removal, log loading and board
removal. A cement pad with 1/2” diameter anchor bolts is recommended. The cement pad
should be rated to support 6350 lbs./sq.ft. at each sawmill foot position.
The design of your site layout should be determined at the time of purchase.
The sawmill is designed for indoor operation and should be fully protected from outdoor
elements.
2. Have a qualified electrician install the power supply before receipt of your sawmill.
The power supply should be installed as close to the machine as possible and must meet
the enclosed specifications concerning wire size, fused disconnect, and voltage.
The electrical installation must also meet local codes.
See Table 3-1. Power Supply Specifications for LT70 Remote Sawmills
3. Have a qualified electrician present when the sawmill is to be installed. All relevant
motor specifications and wiring information is provided. When scheduling an electrician
for the day of installation, please confirm that they have enough of the proper size cable
(wiring), as shown above. Many electricians may not stock this cable, which could
seriously delay installation and training.
3-Phase
Volts
Fuse
Disconnect
Time
Delay
Fuse
Suggested Wire
Size
400 VAC 100 Amps 63 Amps 10 mm2
up to 15 m long
TABLE 3-1
!

SETUP
Site Preparation
3
3-2 doc100206 SETUP
See Table 3-2. This table lists the 25 horsepower motor specifications for your
reference.
25 HP Electric Motor Specifications
Horsepower 25 (18.5kW)
RPM 2930
Volts 400
Amps 33.8
Ambient temperature -15° to +40°
C
Insulation Class F
PH 3
Protection Degree IP55
Duty Continuous
TABLE 3-2

SETUP
Sawmill Installation
SETUP doc100206 3-3
3
3.2 Sawmill Installation
Position the sawmill approximately 10 inches (250 mm) from the operator station.
The operator station may be moved in the horizontal direction slightly to obtain the
desired view of the sawmill.
After the sawmill is positioned, make sure the horizontal locking bolt and top adjustment
nut on each leg is loose. Anchor the sawmill to the floor with 1/2” anchor bolts and nuts.
At some foot locations, you may not be able to drill all four anchor bolt holes. Use at least
two holes at each foot location.
Remove the saw head rest assembly located under the outer side of the saw head and
the saw head rest block located under the inner side of the saw head.
See Figure 3-1.
FIG. 3-1
Leave top adjustment
nut loose
Anchor bolt holes (use
at least two per foot)
FOOT DETAIL

SETUP
Replacing The Blade
3
3-4 doc100206 SETUP
3.3 Replacing The Blade
DANGER! Always shut off the sawmill motor before
changing the blade. Failure to do so will result in serious
injury.
WARNING! Always wear gloves and eye protection when
handling bandsaw blades. Changing blades is safest when
done by one person! Keep all other persons away from
area when coiling, carrying or changing a blade. Failure to
do so may result in serious injury.
Adjust the blade guide arm all the way open.
Open the two blade housing covers that cover the blade wheels. Turn the blade tension
handle to release the blade tension until the wheel is pulled in and the blade is lying loose
in the blade housing. Lift the blade out of the blade housing.
When installing a blade, make sure the teeth are pointing the correct direction. The teeth
should be pointing toward the vertical mast of the mill when you are looking at the blade
below the blade wheels. Install the blade so it is lying around the wheels.
CAUTION! Be careful when placing the blade between the
blade guide inserts. If the blade hits one of the inserts hard
enough, it could damage the insert.
Position 1 1/4" wide blades on the wheels so the gullet is 1/8” (3.0 mm) out from the front
edge of the wheel. Position 1 1/2" wide blades on the wheels so the gullet is 3/16”
(4.5 mm) out from the edge of the wheel.
Close the blade housing covers.
Next, turn the tension handle until the blade is tensioned correctly.