Oliver 4910 User manual

4910 12” Ripsaw
Owner’s Manual
(shown with optional laser)
Oliver Machinery M-4925 10/2003
Seattle, WA Copyright 2003
[e-mail] www.olivermachinery.net

Warranty
Thank you for your purchase of a genuine Oliver woodworking machine. Oliver Machinery has made
every attempt to provide a machine that is safe and durable.
All Oliver products are guaranteed, to the ORIGINAL RETAIL CUSTOMER, to be free from defects for
TWO YEARS FROM THE DATE OF PURCHASE. Oliver Machinery will repair or replace, at its option,
any component that fails under normal use. Please note that the customer is responsible for returning the
failed component to Oliver Machinery prepaid for inspection.
This warranty does not cover damages caused by misuse, accident, unauthorized repair, alteration or
improper maintenance.
Warning
Read this manual thoroughly before operating the machine. Oliver Machinery disclaims any liability for
machines that have been altered or abused. Oliver Machinery 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.
For More Information
Oliver Machinery is always adding new Industrial Woodworking products to the line. For complete, up-to-
date product information, check with your local Oliver Machinery distributor, or visit
www.olivermachinery.net
2

WARNING
Read this manual completely and observe all warning labels on the machine. Oliver Machinery has made
every attempt to provide a safe, reliable, easy-to-use piece of machinery. Safety, however, is ultimately
the responsibility of the individual machine operator. As with any piece of machinery, the operator must
exercise caution, patience, and common sense to safely run the machine. Before operating this product,
become familiar with the safety rules in the following sections.
• Always keep guards in place and in proper operating condition.
• Never reach around or under the saw blade.
1. If you are not properly trained in the use of a ripsaw do not use until the proper training has been
obtained.
2. Read, understand and follow the safety instructions found in this manual. Know the limitations and
hazards associated with this machine.
3. Electrical grounding: Make certain that the machine frame is electrically grounded and that a
ground lead is included in the incoming electrical service. In cases where a cord and plug are used,
make certain that the grounding plug connects to a suitable ground. Follow the grounding procedure
indicated in the National Electrical Code.
4. Eye safety: Wear an approved safety shield, goggles, or glasses to protect eyes. Common
eyeglasses are only impact-resistant, they are not safety glasses.
5. Personal protection: Before operating the machine, remove tie, rings, watch and other jewelry and
roll up sleeves above the elbows. Remove all loose outer clothing and confine long hair. Protective
type footwear should be used. Where the noise exceeds the level of exposure allowed in Section
1910.95 of the OSHA Regulations, use hearing protective devices. Do not wear gloves.
6. Guards: Keep the machine guards in place for every operation for which they can be used. If any
guards are removed for maintenance, DO NOT OPERATE the machine until the guards are
reinstalled.
7. Work area: Keep the floor around the machine clean and free of scrap material, saw dust, oil and
other liquids to minimize the danger of tripping or slipping. Be sure the table is free of all scrap,
foreign material and tools before starting to use the machine. Make certain the work area is well
lighted and that a proper exhaust system is used to minimize dust. Use anti-skid floor strips on the
floor area where the operator normally stands and mark off machine work area. Provide adequate
work space around the machine.
8. Material condition: Do not attempt to saw boards with loose knots or with nails or other foreign
material. Do not attempt to saw twisted, warped, bowed stock.
9. Operator position: Maintain a balanced stance and keep your body under control at all times.
Although the machine is equipped with antikickback fingers, the operator should be aware of the
possibility of material kick-back and position himself accordingly.
10. Before starting: Before turning on machine, remove all extra equipment such as keys, wrenches,
scraps, and cleaning rags away from the machine and off the table.
11. Careless acts: Give the work you are doing your undivided attention. Looking around, carrying on a
conversation, and “horseplay” are careless acts that can result in serious injury.
3

12. Disconnect all power sources: Before performing any service, maintenance, adjustments or when
changing blades. A machine under repair should be RED TAGGED to show it should not be used
until the maintenance is complete.
13. Job completion: If the operator leaves the machine area for any reason, the ripsaw should be
turned "off" and the blade should come to a complete stop before departure.
14. Replacement parts: Use only genuine Oliver Machinery factory authorized replacement parts and
accessories; otherwise the warranty and guarantee is null and void.
15. Misuse: Do not use this Oliver ripsaw for other than its intended use. If used for other purposes,
Oliver disclaims any real or implied warranty and holds itself harmless for any injury or damage which
may result from that use.
16. Drugs, alcohol and medication: Do not operate this machine while under the influence of drugs,
alcohol, or any medication.
17. This machine is designed for cutting wood products only. Do not use to cut any kind of metal or
substance other then wood.
18. Never start the saw while a workpiece is in contact with the blade.
19. Adjust the carriage/pressure roller height for each workpiece. Lock the carriage in place before
making cuts.
20. Raise or lower the blade only when the machine has been turned “off” and the blade has come to a
complete stop.
21. Damaged Saw Blade: Never use a damaged saw blade or one that has been dropped. Check the
saw blade for cracks or missing teeth. Do not use a cracked or dull blade or one with missing teeth.
Make sure the blade is securely locked on the arbor.
22. Make sure the blade is running in the proper direction. Refer to the arrow on the blade. The teeth
should be pointing up when viewing from the front of the saw.
23. Health hazards: Some dust created by power sanding, sawing, grinding, drilling and other
construction activities contains 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 and cement and other masonry products.
• Arsenic and chromium from chemically-treated lumber.
Your risk from these exposures 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 those dust masks that are specifically designed to filter out microscopic particles.
Familiarize yourself with the following safety notices used in this manual:
CAUTION: (This means that if precautions are not heeded, it may result in minor or moderate injury
and/or possible machine damage)
WARNING: (This means that if precautions are not heeded, it could result in serious injury or possibly
even death).
4

Table of Contents Page Number
Warranty........................................................................................................................................................ 2
Warnings ....................................................................................................................................................3-4
Table of Contents.......................................................................................................................................... 5
Specifications ................................................................................................................................................ 5
Contents of the Shipping Containers ............................................................................................................ 6
Uncrating the Machine .................................................................................................................................. 6
Machine Preparation and Setup ................................................................................................................... 6
Dust Collection .............................................................................................................................................. 7
Electrical Connections................................................................................................................................... 7
Fence............................................................................................................................................................ 8
Assembly....................................................................................................................................................... 8
Adjustment of Fence to Blade....................................................................................................................... 8
Adjustment of Rail to blade ........................................................................................................................... 8
Saw Blade .................................................................................................................................................... 9
Choosing the Correct Saw Blade .................................................................................................................. 9
Replacing the Blade ...................................................................................................................................... 9
Setting the Saw Blade Height ..................................................................................................................... 10
Pressure Roller/Carriage.......................................................................................................................... 10
With Respect to Work Piece ....................................................................................................................... 10
Height Adjustment....................................................................................................................................... 10
Chain Oiler ................................................................................................................................................. 11
Adjusting the Interval/Duration.................................................................................................................... 11
Recommended Oil ...................................................................................................................................... 11
Operation ................................................................................................................................................... 12
Proper position of operator.......................................................................................................................... 12
Pre-start....................................................................................................................................................... 12
Start............................................................................................................................................................. 12
Feed Rate.................................................................................................................................................... 13
Maintenance .............................................................................................................................................. 13
Lubrication................................................................................................................................................... 13
Other ........................................................................................................................................................... 13
Troubleshooting .......................................................................................................................................... 14
Specifications
Model No................................................................................................................................................. 4910
Stock No........................................................................................................................................... 4910.001
Arbor Diameter (in.)....................................................................................................................................... 1
Blade Diameter (in.) .................................................................................................................................... 12
Blade Speed (RPM) ............................................................................................................................... 4,500
Feed Speed 3 Speed: .............................................................................................................. 45,60,70 FPM
Cutting Depth (in.) ...................................................................................................................................3-3/8
Maximum Ripping Width (in.)................................................................................................................. 13.75
Minimum Board Length (in.)........................................................................................................................ 14
Pressure Rollers............................................................................................................................................ 6
Anti-Kickback Device(s) ................................................................................................................................ 3
Table Size (W x L/in.).......................................................................................................................... 30 x 50
Table Height (in.)......................................................................................................................................... 30
Dust Collection Port (in.) ............................................................................................................................... 4
Feed Motor..................................................................................................................... 1HP, 3Ph, 220/440V
Controls..................................................................................................................................... 24V Magnetic
Motor ........................................................................................................................... 7.5HP, 3Ph, 220/440V
Shipping Dimension (L x W x H/in.) ............................................................................................ 45 x 59 x 58
Gross Weight (lbs.) ................................................................................................................................. 2310
CFM............................................................................................................ 400CFM at 4500FPM air velocity
5

Oliver 4925 – 12” Ripsaw
Contents:
1. 12” Ripsaw
2. Key for electrical box
3. Fence
4. Rail
5. Instruction manual
6. Sawblade (installed)
7. Toolbox with the following
-arbor shaft wrench
-sawblade bolt wrench
-fence handwheel
-oil bottle
-allen key set
-10/12mm wrench Shown with Optional Laser and Bracket
-17/19mm wrench
-phillips screwdriver
-extra rubber chain inserts
-grease gun
Tool Box Contents
-levelling bolts
8. Laser and bracket (optional)
Uncrating the Machine
Uncrate the machine and inspect the unit for
signs of shipping damage. If damage is found,
contact your dealer immediately. Unbolt the
machine from the pallet Retain all packaging
materials in case it becomes necessary to ship
the machine to another site.
Machine Preparation and Setup
! WARNING
The equipment used to lift this machine
must have a rated capacity at, or above the
weight of the ripsaw. Failure to comply
may cause serious injury!
The ripsaw must be positioned on a smooth,
level surface. The area must be well lit and
have plenty of room to maneuver with large
pieces of wood.
Level the saw front to back and side to side
using a level placed on the table. Use shims
under the corners, if necessary, but make sure
the saw is stable before being placed into
service.
Clean all rust protected surfaces with a
commercial solvent. Do not use acetone,
gasoline, lacquer thinner or any type of
flammable solvent, or a cleaner that may
damage paint. Cover cleaned surfaces with
WD-40 or a 20W machine oil.
6

Dust Collection
The 4” dust collection port (A, Figure 4) is
located on top of the pressure roll carriage.
Typically flex hose is used to run from this
point to a central trunk line.
Figure 4
Do not operate the machine without dust
collection.
Electrical Connections
! WARNING
Electrical connection and wiring must be
performed by a certified electrician. The
machine must be properly grounded.
Failure to comply may cause serious
injury!
This ripsaw is 3-Phase, 220V/440V pre-wired
220V. If you need to switch from 220V to
440V have a certified electrician make the
changes. Oliver Machinery recommends
using a dedicated circuit.
Figure 5a
Make sure the voltage of your power supply
matches the specifications on the motor plate
of the machine.
, WARNING!
Prior to rotation check, raise the carriage
to ensure the 2nd row of kickback fingers
do not get caught in conveyor.
With 3-Phase power verify the blade is turning
in the proper direction. If rotation is incorrect,
swap two of the phases to reverse.
Note: If running from a phase converter
ensure the ‘high leg’ of the converter does not
feed the control circuit of the rip saw.
! WARNING
The 110 volt receptacle located on the
outside of the electrical box is for the laser
only. Failure to comply will result in
machine failure.
The main power connections are to be wired
to point A in the man control box as shown in
diagrams 5a and 5b.
Figure 5b
7

Fence
Figure 1
Assembly and Installation of the Fence
1. Remove the fence and fence hand wheel
from the shipping pallet.
2. Unbolt the fence rail from the rip saw. The
fence rail is secured on either side with a
hex bolt.
3. Thoroughly clean fence and rail including
the inner race of the fence bracket to
ensure smooth operation.
4. Slide the fence onto the fence rail. Make
sure that the pinion gear rotates freely on
the rack.
5. Install the hand wheel onto the pinion gear
shaft. Secure the hand wheel to the shaft
with the set screw.
Figure 2
6. Attach the complete assembly using the
two hex bolts. Do not tighten at this time.
Adjustment of Fence to Blade
1. Lay a good known straight edge (B, Figure
1) on the table along the inside edge of
the caterpillar chain (A, Figure 1).
2. Loosen the 4 allen bolts (C, Figure 1) inset
in the top of the fence casting.
3. Slide the fence toward the straight edge
and tighten the allen bolts once the fence
is in alignment with the straight edge.
Adjustment of Rail to Blade
1. The “zero mark” on the tape should align
with the right side blade kerf.
Figure 3
2. From the factory the blade was run into
the rubber inserts of the caterpillar chain.
From this the blade kerf impression can be
seen in the rubber insert (A, Figure 2). IF
there is no blade impression go to ‘Setting
the Saw Blade Height on page 16.
3. Slide the fence to the “zero mark” (A,
Figure 3) and lock into place using the
fence lock handle.
4. Now slide the rail left or right until the left
face of the fence is directly over the right
side blade kerf impression on the rubber
insert (B, Figure 2).
5. Tighten the rail bolts.
8

Saw Blade
! WARNING
Disconnect power to the machine before
performing any maintenance.
Figure 6
Choosing the Correct Saw Blade
Choose the correct saw blade according to the
species of wood as well as it’s dimension.
Note: Always use a sharp saw blade. A
sharp blade not only gives a better cut it
lessens load on the saw arbor thereby
prolonging bearing life. As well, a dull
blade heightens the possibility of material
kick back and poses a danger to the
operator.
Replacing the Saw Blade
1. To remove the saw blade first loosen the
arbor lock handle (B, Figure 6) and the
carriage lock handle (A, Figure 6).
Note; Make sure the carriage lock handle
is not pushed down and into the carriage
support casting or it will break when the
carriage is lowered.
Figure 7
2. Turn the carriage height hand wheel (C,
Figure 6) to lower the pressure wheels to
a distance of approximately ¼” above the
conveyor chain.
3. Turn the saw blade height hand wheel (D,
Figure 6) to raise the saw blade to a
distance of approximately ¼” above the
conveyor chain. This will prevent the
possibility of damage to the blade when
removing it.
4. Use the supplied arbor wrench (A, Figure
7) and arbor bolt wrench (B, Figure 7) to
loosen the arbor bolt. Use a block of
wood (C, Figure 7) to support the arbor
wrench for better stability. Remove the
bolt and damper.
Note: The arbor bolt is standard right hand
thread rotation.
5. Remove saw blade.
6. Before installing the new saw blade
thoroughly clean the arbor bolt, damper,
and arbor flange. Make sure saw blade is
completely flush with arbor flange before
installing damper and bolt. Failure to do
so may result in a warped blade which can
cause excessive vibration and premature
bearing failure.
7. Install the blade making sure to secure the
arbor bolt.
9

Setting the Saw blade Height
Figure 8
1. For proper operation the height of the saw
blade must be below the conveyor chain
but no more than 1/16” (Figure 8). This
will in effect allow the blade to cut into the
rubber chain insert. This is normal.
Adjust the arbor height hand wheel (D,
Figure 6) accordingly.
2. Once the saw blade height is set lock into
place with the arbor height locking handle
(B, Figure 6).
3. Now return the carriage to it’s correct
height using the carriage height
handwheel (C, Figure 6) and lock into
place with the carriage lock handle (A,
Figure 6).
Figure 9
Pressure Roller/Carriage
With Respect to the Work Piece
! WARNING
Incorrect height setting of pressure rollers
can cause material kick back and injury to
operator.
Figure 9 shows the relation of the pressure
roller height to the work piece. The pressure
roller height should be 1/16” to 3/16” below the
height of the material. The lower the rollers
the more pressure is exerted on the material.
Typically when running thick heavy material
more pressure is required. Inadequate
pressure can cause poor feeding and
subsequently a poor cut. Inadequate pressure
can also heighten the probability of material
kick back and serious injury to the operator.
Figure 10
Height Adjustment
The scale in Figure 10 represents the height of
the pressure rolls to the conveyor chain.
Therefore if you are running 1” thick material
use the scale to set the pressure rolls to
approximately 15/16” or to a thickness as
described in the above paragraph.
10

Chain Oiler
Figure 11
The Oliver Model 4910 rip Saw is equipped
with an automatic conveyor chain oiler. The
correct operation and maintenance of this oiler
is critical to the machine operation.
Inadequate lubrication will result in worn chain
guides, blocks, and pins. A worn conveyor will
not give a straight cut.
! WARNING
Inspect chain lubricator reservoir (Figure
11) daily for adequate oil level. Failure to
do so may result in machine failure.
The oiler has been factory preset to deliver a
6CC burst of oil every 5 minutes. However
your shop may require a different setting. The
correct setting is proportional to the feed rate.
Too much lubrication however will attract
excessive dust, so there is a happy medium to
find.
Adjusting the Duration
1. Turn on the rip saw making sure that both
the feed chain and blade are running.
See the ‘Pre-Start’ section on page 20
prior to turning on the machine.
2. Although the interval is set at 5 minutes
and cannot be changed, the duration of
the oil burst can be adjusted according to
the feed speed.
3. To change the burst time unscrew the
plastic cap (A, Figure 12), loosen the set
screw (B, Figure 12) then turn the thumb
screw (C, Figure 12) until the desired
volume of oil is attained. The post in is
marked from 3-6CC’s Figure 12
Note: When the oil level gets too low in
the reservoir the alarm light will glow on
the oiler control panel and the saw control
panel
Recommended Oil (Mobil Vactra #2 can be
purchased through Grainger Supply)
ISO Spec. cst@40 Mobil Esso Shell
VG-68 68 Vactra #2 Febis K68 Tonna T68
11

Operation
Proper Position of Operator
! WARNING
Never stand directly in line with the saw
blade when feeding material. Failure to do
so may bring injury to the operator.
Although the machine is equipped with two
rows of anti-kickback fingers this does not
eliminate the danger of material kickback. For
this reason it is very important for the operator
to be aware of the position of the saw blade
and never stand directly in line with it while
feeding. For safety the operator must stand
off to the side. See figure 13. Line ‘A’
represents the line of the saw blade.
Pre-Start
1. Check for proper oil level in lubricator
reservoir. Figure 13
2. Remove any article from the machine
table and ensure the blade is free and
clear.
3. Position the carriage height according to
the material to be run through and lock
into place.
4. Position the fence accordingly and lock
into place.
5. Turn dust collection on.
Start
1. The emergency stop button (A, Figure 14)
should be in the ‘out’ position. To check
this, give it a half turn to the right.
2. The power indicator light (B, Figure 14)
should be illuminated.
3. Push the saw blade on button (E, Figure
14).
4. Push the conveyor start button (D, Figure
14).
Note: The conveyor will not start until the
saw blade is running first. This is a safety
feature to prevent feeding material into a
blade that is not spinning thus damaging
the machine.
Figure 14
5. Begin feeding stock
6. Be aware of warped or cupped material
and feed into the machine accordingly.
Cups and concave surfaces should be
facing down.
12

Feed Rate
The feed rate is determined by the thickness
of material being run as well as the species.
Also consideration as to the moisture content
should be taken. Heavy green lumber should
be run slower than dry lumber.
1. To change feed speed, open access door
at rear of machine. Loosen lock nut on
draw rod (Fig 15) that tensions the belt.
2. Loosen lock bolt on pivot rod.
3. Move the belt on the upper step pulley first
to the desired position then move the belt
on the lower step pulley to the
corresponding position. Figure 15
4. Tighten the draw rod nut to give proper
tension on the V-belt and then tighten the
lock nut.
Maintenance
Lubrication
See Figures 16 and 17 for the various
lubrication points on the machine. Points are
as follows:
1. Grease nipples of spindle bearings.
Grease every 250 hours of with a #2
bearing grease such as Mobillux 2.
2. Oil cup of carriage height shaft. Fill
monthly with #68 lube oil such as Vectra
2. Figure 16
3. Oil Lubricator of conveyor chain. See
page 11 of chain lubrication section.
4. Flanged bearing of conveyor chain
wheel. Once every two weeks, grease
with #2 bearing grease such as Mobillux 2.
5. Gear reducer of conveyor chain. After
300 hours drain the gearbox and refill with
SAE 90# gear oil. Thereafter the oil
should be changed every 2500 hours. Fill
to view window.
6. Elevation screw of spindle height
adjustment. Once a month brush on
general purpose grease directly on the
screw shaft.
Other
The machine should be blown clear of
dust and debris after each shift and the V-
belt tension of the main spindle should be
checked monthly.
Figure 17
13

Troubleshooting
Description of Symptoms Possible Cause Corrective Action
Machine will not start
1. Fuse blown or circuit breaker
tripped
2. Cord Damaged
3. Faulty switch
4. Not connected to power
source
5. No power to machine
6. Emergency stop button
pressed
1. Replace fuse or reset circuit
breaker
2. Have cord replaced
3. Replace switch
4. Check connection
5. Check voltage
6. Rotate emergency stop button
clockwise until it pops out
Blade does not come up to speed
1. Cable too light or too long
2. Low current
3. Motor not wired for correct
voltage
1. Replace with adequate size
cable
2. Contact local electric
company
3. Refer to motor nameplate for
correct voltage
Saw makes unsatisfactory cuts
1. Dull blade
2. Blade mounted backwards
3. Gum or pitch on blade
4. Incorrect blade for cut
1. Sharpen or replace blade
2. Turn blade around
3. Remove blade and clean
4. Change blade to correct type
Material binds blade when ripping
1. Fence not aligned with blade
2. Warped wood
3. Excessive feed rate
1. Check and adjust fence
2. Select another piece of wood
3. Reduce feed rate.
Saw vibrates excessively
1. Machine not level.
2. Damaged saw blade
3. Bad V-belts
4. Bent pulley
5. Improper motor mounting
6. Loose hardware
1. Reposition on flat, level
surface
2. Replace saw blade
3. Replace V-belts
4. Replace pulley
5. Check and adjust motor
6. Tighten hardware
Material kicked back from blade
1. Fence out of alignment.
2. Dull blade
3. Carriage height set
incorrectly.
4. Anti-kick back paws dull
1. Align fence to chain.
2. Replace blade
3. Set carriage height and lock.
4. Replace or sharpen anti-kick
back paws
Adjustments do not move freely. Sawdust and debris in
mechanisms Clean and regrease
Cut not straight Damaged to chain or way due
to insufficient lubrication Replace chain or way.
Conveyor will not start Saw blade not running Turn on saw blade
14