National Flooring Equipment 5700-aus User manual

Read Manual Before Operating Machine
ALL DAY BATTERY RIDE-ON SCRAPER
INSTRUCTION MANUAL
Rev B
401810

Table of Contents
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Table of Contents .......................................................................................................................................................3-4
Features and Specifications......................................................................................................................................... 5
Safety...........................................................................................................................................................................6-8
General Rules For Safe Operation.....................................................................................................................6-7
Characteristics of a Defensive Operator................................................................................................................ 7
Hydraulic Safety Tips............................................................................................................................................. 7
Silica Dust Warning................................................................................................................................................ 8
Battery/Charger Information....................................................................................................................................9-12
Charger Instructions .............................................................................................................................................. 9
Machine Charging................................................................................................................................................ 10
Built In LVI............................................................................................................................................................ 10
Commonly Asked Questions.................................................................................................................................11
Battery Troubleshooting....................................................................................................................................... 12
Machine Operation.................................................................................................................................................13-21
Loading/Unloading............................................................................................................................................... 13
Center of Gravity.................................................................................................................................................. 14
Job Site Movement.............................................................................................................................................. 14
Operating Controls..........................................................................................................................................15-16
Operational Tips................................................................................................................................................... 16
Dialing In the Machine......................................................................................................................................... 17
Applications Set-Up........................................................................................................................................19-20
Ditching................................................................................................................................................................ 21
Blades......................................................................................................................................................................22-25
Cutting Heads...................................................................................................................................................... 22
Types of Blades..............................................................................................................................................22-24
Blade Sharpening................................................................................................................................................ 25
Machine Maintenance ............................................................................................................................................26-29
Manual Slide Plate Removal................................................................................................................................26
Raising or Lowering Manual Slide Plate.............................................................................................................. 26
Dual Slide Plate Removal.................................................................................................................................... 26
Checking Oil Level............................................................................................................................................... 27
Oil Change Out.................................................................................................................................................... 27
Hose Change Out................................................................................................................................................ 27
Wheel Motor Change Out.................................................................................................................................... 27
Foot Peg Removal............................................................................................................................................... 27
Pump Change Out............................................................................................................................................... 28
Valve Change Out................................................................................................................................................ 28
Motor Change Out............................................................................................................................................... 28
Hydraulic Cylinder Change Out........................................................................................................................... 28
Rear Wheel Changing ......................................................................................................................................... 28
Seat Replacement............................................................................................................................................... 29
Troubleshooting Guide............................................................................................................................................... 30
Parts List and Diagrams ........................................................................................................................................31-47
Complete Parts List ........................................................................................................................................31-32
External Parts...................................................................................................................................................... 33
Cylinder Assembly............................................................................................................................................... 34
Slide Plate Assembly........................................................................................................................................... 34
Caster Wheel Assembly....................................................................................................................................... 35
Rear Wheel Assembly ......................................................................................................................................... 35
Electrical Box Assembly....................................................................................................................................... 36
Battery ................................................................................................................................................................. 36
Back up Beeper Assembly................................................................................................................................... 37
Handle Switch...................................................................................................................................................... 37
Instruction Tube................................................................................................................................................... 37
Foot Peg Assembly.............................................................................................................................................. 37
Spool and Hose Parts.......................................................................................................................................... 38
Filter and Tank Parts............................................................................................................................................ 38
Hydraulic Flow Diagram....................................................................................................................................... 39
Motor.................................................................................................................................................................... 40

Table of Contents
Fax: [phone] [email protected]4
Gear Pump Assembly.......................................................................................................................................... 40
Labels.................................................................................................................................................................. 41
Weights & Wrench............................................................................................................................................... 42
Battery Wiring...................................................................................................................................................... 43
Seat Wiring.......................................................................................................................................................... 44
Machine Wiring.................................................................................................................................................... 45
Accessories ....................................................................................................................................................46-47
Material Safety Data Sheet (MSDS) Information..................................................................................................48-55
Guarantee..................................................................................................................................................................... 57

Features and Specifications
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FEATURES
Product Specifications
Width Length Height Empty Weight Fully Weighted Removable Weight
62.2 cm
(24.5”)
137.1 cm
(54”)
120.6 cm
(47.5”)
916.7 kg
(2021 lb)
996 kg
(2196 lb)
79.4 kg
(175 lb)
Run Time HP Speed Sound Level HandleAcceleration HandleAcceleration
8-12 hours 4 up to 120 ft./min. 94-97 dB(A) Left .216 m/s sq. Right .306 m/s sq.
Kill Switch - Insures the machine will not function without someone in
the operator seat.
18” Wheels - Work on all types of application and debris build-up.
They also work well for slippery/slimy residue (i.e. double stick).
On Board Battery Charger - Powered by 230 volts, it charges the 12
AGM batteries overnight.
Adjustable Slide Plate -Affords maximum versatility in blade set-
tings.
Fork Lift Cups - Make it easier to load and unload on jobsites.
Control Levers - Forward, reverse, turn and brake with easy to move
levers.
DC Motor Pump Compartment - Easy access for maintaining the
machine.
Adjustable Foot Rests - For operator comfort.
Cutting Head Cylinder Lift - Change the angle of the cutting head
with the control handle next to the operator seat.
Debris Deflector - Redirects debris away from the operator.
Removable Swivel Cutting Head - Assures continuous blade contact
with the floor.
Kill Switch within the seat
18” Wheels
On Board Battery Charger
Adjustable Slide Plate
Fork Lift Cups
Control Levers
DC Motor Pump
Compartment
Adjustable Foot Rests
Cutting Head Cylinder Lift
Debris Deflector
Removable Swivel
Cutting Head

GENERAL RULES FOR SAFE OPERATION
READAND SAVE ALLINSTRUCTIONS FOR FUTURE USE. Before use, ensure operators reads and understand this manual. Read and
understand labeling on machine and components. All operators must view the instruction video. Extra copies of the manual and video are avail-
able by contacting National Flooring Equipment.
1. KNOW YOUR EQUIPMENT: Read this manual carefully to learn equipment applications and limitations, potential hazards associated with
this type of equipment. Keep this manual with the equipment it is associated with.
2. DISARM MACHINE: Remove cutting head or drop cutting head to the floor when machine is not in use.
3. DO NOT “SIDE HILL” MACHINE.
4. DISCONNECT CHARGER: Disconnect machine from charger before operating machine.
5. AVOID DANGEROUS ENVIRONMENTS: Do not use in rain, damp or wet locations, or in the presence of explosive atmospheres (gas-
eous fumes, dust or flammable materials). Remove materials or debris that may be ignited by sparks.
6. KEEP WORK AREACLEAN AND WELL LIT: Cluttered, dark work areas invite accidents.
7. DRESSPROPERLY:Do not wear loose clothing. These may be caught in moving parts. When working wear gloves and insulated non-skid
footwear. Keep hands and gloves away from moving parts.
8. USE SAFETY EQUIPMENT: Proper eye protection should be worn at all times. Wear hearing protection during extended use and a dust
mask for dusty operations. Hard hats, face shields, safety shoes, etc. should be worn when specified or necessary.
9. KEEP BYSTANDERS AWAY: Children and other bystanders should be kept at a safe distance from the work area to avoid distracting the
operator and contacting the equipment or extension cord. Operator should be aware of the proximity of bystanders. This machine is not
intended for use by persons (including children) with reduced physical, sensory or mental capabilities or lack of experience and knowledge.
10. PROTECT OTHERS IN THE WORKAREA: Provide barriers or shields as needed to protect others from debris.
11. USE PROPER ACCESSORIES: Using accessories that are not recommended may be hazardous. Be sure accessories are properly
installed and maintained. Do not delete a guard or other safety device when installing an accessory or attachment.
12. CHECK FOR DAMAGED PARTS: Inspect guards and other parts before use. Check for misalignment, binding of moving parts, improper
mounting, broken parts and other conditions that may affect operation. If abnormal noise or vibration occurs, turn off immediately and have
the problem corrected before further use. Do not use damaged equipment. Tag damaged equipment “DO NOT USE” until repaired. Miss-
ing or damaged parts should be properly repaired or replaced immediately. For all repairs, use only identical National replacement parts.
13. REMOVEALLADJUSTINGKEYSANDWRENCHES: Make a habit of checking that the adjusting keys, wrenches, etc. are removed from
the tool before turning it on.
14. GUARD AGAINST ELECTRIC SHOCK: Prevent body contact with grounded objects such as pipes, radiators, ranges and any other
related surfaces. When making cuts, always check the work area for hidden wires or pipes. Hold your equipment by insulated nonmetal
grasping surfaces. Use a Ground Fault Circuit Interrupter (GFCI) to reduce shock hazards.
15. AVOID ACCIDENTAL STARTING: Be sure equipment is turned off before plugging in. Do not use equipment if the power switch does not
turn the equipment on and off.
16. DO NOT FORCE EQUIPMENT: Equipment will perform best at the rate for which it was designed. Excessive force only causes operator
fatigue, increased wear and reduced control.
17. KEEP HANDS AWAY FROM ALL CUTTING EDGES AND MOVING PARTS.
18. WEAR gloves when changing accessories.
19. DO NOT ABUSE CORD: Never unplug by pulling the cord from the outlet. Pull plug rather than cord to reduce the risk of damage. Keep
the cord away from heat, oil, sharp objects, cutting edges and moving parts.
20. DO NOT OVERREACH. MAINTAIN CONTROL: Keep proper footing and balance at all times. Maintain a firm grip.
21. STAY ALERT: Watch what you are doing and use common sense. Do not use when you are tired, distracted or under the influence of
drugs, alcohol or any medication causing decreased control.
22. CHARGING MACHINE: On/Off switch must be in off position before connecting to power source.
23. UNPLUG EQUIPMENT: When not in use and before changing accessories or performing recommended maintenance, unplug machine.
24. MAINTAIN EQUIPMENTCAREFULLY:Keep handles dry, clean and free from oil and grease. Keep cutting edges sharp and clean. Follow
instructions for lubricating and changing accessories. Inspect equipment cords and extension cords for damage. Replace damaged parts.
Use only identical National replacement parts.
Safety
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Safety
Fax: [phone] [email protected]7Fax: [phone] [email protected]7
25. STORE IDLE EQUIPMENT: When not in use, store in a dry, secured place. Keep away from children.
26. MAINTAIN LABELS AND NAMEPLATES: These carry important information. If unreadable or missing, contact National for a replace-
ment.
27. MACHINE IS HEAVY, DO NOT DROP. Ensure proper lifting procedures are followed when transporting.
28. DO NOT USE ON STEPS.
29. DO NOTALLOW the cutting heads to come into contact with the supply cord.
30. BATTERIES: Periodically inspect batteries, charger and all plug connections. Only the manufacturer or an authorized servicing agent
should replace the batteries. Do not open or tamper with batteries. Doing so voids all warranties and could cause injury due to electrical
shock.
31. REGULARLY EXAMINE the supply cord for damage, such as cracking or aging. If damaged, replace the cord before further use. Only
replace the supply cord with the type specified in this manual.
CHARACTERISTICS OFADEFENSIVE OPERATOR
A Good Operator is a “Defensive” Operator!
QUALITIES INCLUDE:
Education:Acquires knowledge of the machine, jobsite condition and the surrounding environment.
Alert: Stays alert at all times and never lets guard down.
Skills: Only performs duties they are qualified to do. Continually tries to improve.
Judgment: Use sound judgement and does not take careless chances.
Common Sense: Applies knowledge in practical situations.
Recognizes the Hazards: Maintains alertness and anticipates danger.
Understands the Defense: Knows that safety isn’t an accident. A person must choose to follow a forward-thinking mind set.
Acts Correctly: Does not give in to peer pressure. Performs correctly when supervised or not.
HYDRAULIC SAFETY TIPS
MAINTAINING ASAFE WORK ENVIRONMENT
Establishing a safe work environment around your hydraulic equipment is paramount to safe and effective machine operation. The easiest and
most effective way to avoid problems is to make sure coworkers understand equipment, know how to operate safely and recognize the danger
represented if handled carelessly. A few things to be aware of:
1. Pressure: Hydraulic fluid under pressure is dangerous and can cause serious injury.
2. Flammability: When ignited, some hydraulic fluids can explode and/or cause fires.
3. Mechanical:Hydraulic fluid creates movement, which causes parts of your equipment to move or rotate. Always be aware of what you are
doing.
4. Moisture: Use caution when operating in wet or high moisture conditions. Make sure all electrical fittings, switches, cords plus stain reliefs
are in good condition. Always unplug when not in use and when doing any service work.
5. Electrical:Faulty wiring can also be an electrical hazard. A regular preventive maintenance program should always include a wiring check.
Unplug batteries and/or charger before servicing.
6. Temperature: Because this machine operates at a relatively low pressure, overheating is not common. If surface of tank becomes too hot
to touch by hand (above 55°C, 130º F), shut off machine and allow to cool off.
PRESSURE
Our system runs at or below 3,000 psi. Never look for a leak when unit is under pressure. Using your hand could cause serious injury. A few
common ways to encounter hydraulic fluid under pressure include:
Fax: [phone] [email protected]7
WARNING: NEVER USE YOUR HANDS TO CHECK FOR LEAKS OVER HOSE OR HYDRAULIC CONNECTIONS. USE A PIECE OF CARD-
BOARD TO LOCATE PRESSURIZED LEAK, FOR LOW PRESSURE LEAKS (DRIPS), USE A RAG TO CLEAN THE AREA AND DETERMINE
WHERE THE LEAK ORIGINATES.

Safety
1. Pinhole: Fluid under pressure can cause serious injury. It can be almost invisible escaping from a pinhole and it can pierce the skin into
the body. Do not touch a pressurized hydraulic hose assembly with any part of your body. If fluid punctures the skin, even if no pain is felt,
a serious emergency exists. Obtain medical assistance immediately. Failure to do so can result in loss of the injured part or death.
2. Leak: Keep fittings and hoses tight. Only check and service when not under pressure. Leaking hydraulic fluid is not only unsightly, it’s
hazardous. In addition to making workplace floors slippery and dangerous, leaks also contaminate the environment. Before cleaning an oil
spill, always check EPA, state and local regulations.
3. Burst: Whether due to improper selection or damage, a ruptured hose can cause injury. If it bursts, a worker can be burned, cut, injected
or may slip and fall.
4. Coupling Blow-off: If the assembly is not properly made or installed, the coupling could come off and hit or spray a worker, possibly
resulting in serious injury. Never operate machine without guards.
FLAMMABILITY
With the exception of those comprised primarily of water, all hydraulic fluid is flammable when exposed to the proper conditions (including many
“fire-resistant” hydraulic fluids).
Leaking pressurized hydraulic fluids may develop a mist or fine spray that can flash or explode upon contact with a cause of ignition. These
explosions can be very severe and could result in serious injury or death.
Precautions should be taken to eliminate all ignition sources from making contact with escaping fluids, sprays or mists resulting from hydraulic
failures. Sources of ignition could be electrical discharges (sparks), open flames, extremely high temperatures, sparks caused by metal-to-metal
contact, etc.
HYDRAULIC FLUID
Only use Texaco Rando 46 Hydraulic Oil or Compatible Fluid like IS032. Non-compatible fluids could cause damage to unit or serious injury.
SAFETYSWITCH
The 5700-AUS All Day Battery Powered Ride-On has been equipped with a safety switch under the seat, which requires the operator to be
seated before the 5700-AUS can be operated. Do not attempt the start-up procedure with out being seated on the machine.
BATTERY
• Contact with electrolytic acid can cause skin irritation and damage clothing. Wear a protective apron, gloves and goggles when working
with batteries. Have plenty of fresh water and soap nearby in case battery acid contacts your skin, clothing, or eyes.
• Remove personal metal items such as bracelets, rings, necklaces, and watches when working with batteries. A battery can produce a short
circuit current sufficient enough to weld metal objects, causing severe burns.
• Never smoke or allow a spark or flame in the vicinity of the batteries. Caution must be taken to reduce the risk of dropping metal tools onto
the battery. A spark or short circuit may result in an explosion.
FIRSTAID
Immediately flush eyes with cold, fresh water for a minimum of 10 minutes if electrolytic acid comes in contact with eyes. Seek professional
medical attention.
VENTILATION
Blocking louvers or air flow perforations of convection or fan cooled battery chargers and/or machine will result in damage to the unit. When
installing the unit leave space for air to flow freely through the intake and discharge louvers and/or perforations.
Fax: [phone] [email protected]8
WARNING: SILICA DUST WARNING SCRAPING/GRINDING/CUTTING/DRILLING OF MASONRY, CONCRETE, METAL AND OTHER
MATERIALS CAN GENERATE DUST, MISTS AND FUMES CONTAINING CHEMICALS KNOWN TO CAUSE SERIOUS FATAL INJURY OR ILL-
NESS, SUCH AS RESPIRATORY DISEASE, CANCER, BIRTH DEFECTS OR OTHER REPRODUCTIVE HARM. IF YOU ARE FAMILIAR WITH
THE RISKS ASSOCIATED WITH THE PARTICULAR MATERIAL BEING CUT, REVIEW THE MATERIAL SAFETY DATA SHEET
AND/OR CONSULT YOU EMPLOYER, THE MATERIAL MANUFACTURER/SUPPLIER, GOVERNMENTAL AGENCIES SUCH
AS OSHA AND NIOSH AND OTHER AUTHORITIES ON HAZARDOUS MATERIALS. CALIFORNIA AND SOME OTHER AU-
THORITIES, FOR INSTANCE, HAVE PUBLISHED LISTS OF SUBSTANCES KNOWN TO CAUSE CANCER, REPRODUCTIVE
TOXICITY, OR OTHER HARMFUL EFFECTS. CONTROL DUST, MIST AND FUMES AT THE SOURCE WHERE POSSIBLE. IN
THIS REGARD USE GOOD WORK PRACTICES AND FOLLOW THE RECOMMENDATIONS OF THE MANUFACTURER/SUP-
PLIER, OSHA/NIOSH, AND OCCUPATIONAL AND TRADE ASSOCIATIONS. WHEN THE HAZARDS FROM INHALATION OF
DUST, MISTS AND FUMES CANNOT BE ELIMINATED, THE OPERATOR AND ANY BYSTANDERS SHOULD ALWAYS WEAR
A RESPIRATOR APPROVED BY OSHA/MSHA FOR THE MATERIAL BEING CUT.

Battery/Charger Information
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CHARGER INSTRUCTIONS
Check that the temporary label on top of the charger marked with the profile setting
matches your battery type.
These chargers work very simply. Once connected and plugged into AC power, the LED
will flash red for a few seconds, then turn steady red. When the cycle is 80% complete it
will turn yellow, and finally green when cycle is complete.
If the profile is set to maintain the battery(s), the LED will flicker green. If the profile is set
to shut off, the cycle will end with a steady green. The LED may also flicker when it is at
the high limit of the charge cycle.
Look to the trouble shooting section for any deviations from this.
Before making AC connections, refer to the requirements on the charger ID label.
To reduce the risk of fire, use this charger only on branch circuits that are protected by a
circuit breaker or fuse, and that are adequate to carry the power drawn by the charger.
This battery charger must be grounded to reduce the risk of electric shock. 230/240 volt
chargers are equipped with a grounding type plug..
If an extension cord must be used, make sure it is in good condition. Use a three conduc-
tor cord no smaller than the size being used on the charger, and keep it as short as
possible. The use of an improper extension cord could result in a risk of a fire or electric
shock. Locate all cords so that they will not be stepped on, tripped over, or otherwise
subjected to damage or stress.
Do not use charger if it shows signs of physical stress, or if DC output leads or connector
feel hot when used.
Do not disconnect the DC output clamps, or connector from the batteries when the char-
ger is on. The resulting arcing could cause the batteries to explode.
Failure to unplug AC power before moving or driving equipment will result in damage to
cords, plugs and receptacles.
Do not over discharge batteries. Excessive discharge can cause polarity reversal of indi-
vidual cells resulting in complete battery failure. Re-charge batteries as soon as possible
after a deep discharge, but not if they are warm, allow a cooling down period.
Caution: The charger is not water proof they are water resistant. They cannot withstand
immersion, continuous exposure (such as pressure washers or hoses) or heavy rain.
Machine contains a drive lockout option which will disable the drive mechanism of the
equipment while the charger is plugged in. This will prevent damage to the AC cord or
receptale.
WARNING: DISCONNECT FROM POWER SOURCE BEFORE OPERATING.
FAILURE TO DO SO COULD CAUSE DAMAGE TO MACHINE OR BODILY INJURY.
FIG. A
WARNING: ELECTRICAL SHOCK HAZARD. ONLY USE NATIONAL’S AP-
PROVED CHARGING SYSTEM.

Battery/Charger Information
MACHINE CHARGING
Machine has an on board charger (Figure B).
1. To eliminate accidental machine start-up while charging depress E-Stop Button
(Figure C) before connecting to power source.
2. Connect to power source using a 3 meter (10 foot) extension cord. NOTE: Not us-
ing the proper gauge & length extension cord could cause improper charging and/
or charger damage.
Note:A steady green light indicates the machine is charging in standard charge cycle.
Green light will blink when charging is complete and in maintenance mode.
3. Complete charging sequence.
4. Disconnect cord from the power source. Make sure the cord/plug is completely
secured to the machine. Cord can fall under machine which causing damage to
cord and/or plug.
5. Release E-Stop.
BUILT IN LOW VOLTAGE INTERRUPT
One of the most common causes of premature battery failure is over discharging.
Low Voltage Interrupter and alarm continuously monitors for low voltage and alarms
when voltage falls.
At 42V the alarm will sound, this is the point where the operator should stop and immedi-
ately move to an outlet and recharge the batteries. Further lowering of voltage will cause
the alarm to speed up, decreasing the load or stopping will cause voltage to recover and
slow the alarm.
At 38.4V the machine will auto-disconnect and turn off, let machine sit until batteries
recover enough to drive to nearest outlet.
Warning: When alarm sounds immediately move machine to outlet for charging.
Fax: [phone] [email protected]10
WARNING: ALWAYS FIND A SAFE PLACE FOR RECHARGING POWER PACKS
WITH GOOD VENTILATION AWAY FROM SPARKS OR FLAME SOURCES AND
AWAY FROM BYSTANDERS. ROPE OFF IF NECESSARY.
FIG. B
FIG. C

Battery/Charger Information
COMMONLYASKED QUESTIONS
1. Question: When the charging battery has not been fully discharged will it take a memory set?
Answer: No, the design of these batteries allow charging at any stage of discharge without memory problems.
2. Question: Do I lose a complete cycle when I charge batteries that are only partially discharged?
Answer: No when 70% or higher useable charge is left. If below 70%, cycle will be used.
3. Question: Does the battery slow down as it discharges?
Answer: No, this design will give full power to 90% of the battery cycle. There will be an audible alarm alerting the operator to plug the
scraper’s charger into a suitable power source before a slowdown occurs.
4. Question: Can the battery spill?
Answer: No, unlike other batteries there is no liquid to spill out which allows for high shock load applications.
5. Question: Will batteries go dead during storage?
Answer: No, the battery design will hold up to 90% of its’ charge up to 2 years without being used or charged.
6. Question: Does severe cold effect the batteries?
Answer: If fully charged, no. If allowed to warm up (room temperature) battery will perform better. If battery is under 75% charge, severe
cold will destroy the battery.
7. Question: Do I have to let batteries cool down after charge?
Answer: No, but if you do, you will get more life out of the battery.
8. Question: Can the battery overheat and discharge gases?
Answer:Yes, if improper charger is used or the battery heats to over 50°C (125° F), gases off the vents inside of the batteries is possible.
Caution must always be taken when charging batteries. Charge in a good ventilated area, away from sparks and open flame and away
from bystanders.
9. Question: Can I leave the charger on too long?
Answer: No, the charging system is designed to read batteries state of charge constantly if left on for long periods of time (over the week-
end) it will not hurt batteries or cause over charging problem.
10. Question: Can I leave the charger running while I am running the machine?
Answer: No, the charger must be unplugged from power supply before using.
Fax: [phone] [email protected]11

Battery/Charger Information
Problem Cause Solution
When plugged into AC power LED flashes
red/green.
Connected reverse to battery, or not con-
nected to battery.
Correct polarity, or connect to battery.
Break in DC cord, or connector. Have a qualified person make repair.
Battery too dead to charge. Replace.
When plugged into AC power LED does not
come on.
No AC power. Check circuit.
Check extension cord for breaks or damage.
When I put a volt meter across the output of
charger there is no power coming out when I
plug it in.
Charger must be connected to a battery to
turn on.
Connect charger to battery.
Batteries don’t receive a full charge. Charger is too small for the battery. Check that charger’s output is about 10% of
the amp hour rating of the battery.
Charge profile is not set correctly. Recheck the dip switch setting. If in doubt,
contact National.
Cycle needs more time. Use only a 3 m (7’) properly gauged exten-
sion cord when charging.
Battery is defective. Replace.
When switched on, LED flashes red/yellow. Charger and battery voltage mismatch. Connect charger to a battery(s) with the
same voltage rating.
When powered up LED is solid red with a
yellow flash.
Battery is very low, and charger is in a slow
charge phase until the voltage rises to a safe
level before full turn on.
Leave connected, it may take hours, but if
the voltage rises even a little bit, it should
recover and turn the charger full on. (Do not
allow your batteries to deep discharge, it is
the number one cause of premature battery
failure.)
Charger blows it’s fuse, or branch circuit fuse/
circuit breaker as soon as it’s switched on.
Charger is shorted. Contact National or an authorized distrubu-
tor’s service facility.
Charger blows the branch circuit fuse/circuit
breaker a short while after being switched on.
Branch circuit is too small. Relocate charger to a branch circuit with a
heavier rating, or remove other loads on the
circuit.
After a full charge, the batteries die quickly. Batteries are sulfated. Sometimes batteries can be recovered.
Leave charger on for some hours, if voltage
falls and current begins to rise, it is a good
sign they can recover under normal charging.
All other issues. Please call National or an authorized distribu-
tor’s service facility.
www.nationalequipment.com Phone: [phone]

Machine Operation
FIG. D
LOADING/UNLOADING
SAFETYPRECAUTIONS
• Always remove blade and cutting head when machine is being moved or trans-
ported.
• Cutting head and slide plate can be removed to make the machine more compact.
• NEVER leave machine unattended on an incline.
• Removing added weights help to make the machine easier and safer to move in
and out of a vehicle.
DOCK HEIGHTS
It is best to load or unload the machine from a level/equal dock height (a van from a van
dock height, a truck/semi from a regular dock height).
POWER-GATE
A power-gate can be used when the dock height is not available. Make sure gate is prop-
erly rated for 1365 kg (3000 lb). Make certain the machine is secure so it does not roll off
the power-gate. To better secure machine, raise machine onto the lowered cutting head,
raising machine off the caster. Tie machine down, chock wheels.
RAMPS
To be safe, the ramp needs to be long to accommodate the machine being loaded/
unloaded. Only use a ramp designed and rated for 1365 kg (3000 lb) or more. Remove
added weight. Do not have at a steep incline. The use of a power winch or hand come-
a-long is much safer. For a van, the ramp should be 4 to 6 meters (12 to 16’) in length
depending on the depth of the incline. For truck height taller than a van, longer ramps will
be needed. See OSHA guidelines. It is not recommended to drive the machine, connect-
ed with power, on a ramp. Make sure ramp is secure and has good contact before using.
Failure to do so could cause ramp to fall away from the vehicle.
FORKLIFT CUPS
There are two forklift cups mounted under the front of the machine (Figure F). Slide fork
lift forks through forklift cups. Slide forks all the way back to touch the rear tire (Figure G).
Before lifting machine, secure machine to fork lift with heavy 1365 kg (3000 lb) or heavier
straps or chain. Tilt forks back to lift machine (Figure H).
WINCHES
Winches should be used for safety when loading or unloading with ramps. 1365 kg (3000
lb) winch minimum.
FIG. E
FIG. F
FIG. G
Fax: [phone] [email protected]13
FIG. H
WARNING: MACHINE HAS A SWIVEL FRONT CASTER. NEVER SIDE HILL
(FIGURE A). THE MACHINE ON A INCLINE WITHOUT POWER, THE FRONT
CASTER WILL CAUSE MACHINE TO SWING TO THE LOWEST POINT. IF IT IS
NECESSARY TO RUN MACHINE ON AN INCLINE, RUN MACHINE ON CUTTING
HEAD. PLACE AT LEAST A 8’’ CUTTING HEAD IN MACHINE. TO KEEP FROM
DAMAGING FLOOR, CLAMP A PIECE OF CARPET INTO CUTTING HEAD TO
SLIDE ON THE FLOOR. THIS WILL GIVE POSITIVE CONTACT WITH THE
FLOOR WHEN POWER IS DISENGAGED FROM THE WHEELS.
CAUTION: MACHINE IS BACK HEAVY. DO NOT RUN ON STEEP INCLINE THIS
COULD CAUSE MACHINE TO TIP OVER! (FIGURE E)
Fork Lift Cup
CAUTION: DO NOT SIDE HILL
Caution: Machine is back heavy. Do not run on steep incline.
This could cause machine to tip over.

Machine Operation
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TRANSPORTING
Secure machine with ratchet straps when transporting the machine. Chock wheels
to keep machine from rolling, hydraulic levers should not be locked in the forward or
backward position. Hydraulic levers should be straight up in the “neutral” position. This
helps to lock drive wheels. Lift machine off swivel caster by lowering cutting head for
better stabilization. Proper securing straps need to be rated at least twice the weight of
the machine.
WHEELCHOCKS
Wheel chocks will help to secure the machine but DO NOT use wheel chocks alone to
secure the machine.
PALLETIZING
Only use a solid platform pallet. If a solid platform pallet is not available, place a piece of
¾” plywood on top of a pallet. Using a forklift with the forks inserted in the forklift cups,
place machine on pallet. Use properly rated ratchet straps to secure machine to pallet.
CENTER OF GRAVITY
Be aware of your surroundings and machines operating angles. When changing from a
low slide plate to a high slide plate setting or a low cutting head angle to a high cutting
head angle, the operating “attitude” of the machine changes. When a floor surface is not
level (ramps, inclines, large amounts of debris which would lift the drive wheel of the ma-
chine, etc.), the center of gravity changes. Too much of an angle could make the machine
unsafe (a cause for tip-over). Do Not run the machine in unsafe environments.
JOB SITE MOVEMENT
TAPING WHEELS
Taping the wheels with a wide like masking tape helps to prevent damage and dirt to
floors during move-in and move-out.
FRONT WHEELASSEMBLY (FIGURE L)
To use the Front Wheel Assembly raise slide plate so the bottom of the slide plate is
higher or even with the bottom of the guide channels, 6” to 8” is ideal. Raise cylinder,
insert Front Wheel Assembly into cutting head. Secure with securing pin. Caster wheel
should swivel freely and the Front Wheel plate should be parallel with the floor.
TO MOVE MACHINE WITHOUT POWER (PUSHING MACHINE)
Forward: To move the machine forward, levers need to be pushed forward. To lock
levers in place, connect a bungee-strap from each lever (pushing levers forward), pulling
straps down to and connecting to the front plate (Figure M). Never leave machine unat-
tended with strap holding levers open.
Backward: To move machine backward, levers need to be pulled backwards. To lock
levers in place, connect a bungee-strap from each lever (pushing levers backward), Pull-
ing straps to the back of the machine and connecting behind the seat or the rear of the
machine (Figure N). Never leave machine unattended with strap holding levers open.
FIG. I
FIG. J
FIG. K
FIG. L
FIG. M
CAUTION:ALWAYS REMOVE STRAPS BEFORE STARTING MOTOR. FAILURE
TO DO SO WILL MAKE MACHINE MOVE AND MAY CAUSE DAMAGE AND/OR
BODILY INJURY.
FIG. N
Pinch Point
Plate
Caster

Machine Operation
FIG. O
OPERATING CONTROLS
POWER ON SWITCH (FIGURE O)
Never use the power ON switch as a method for speed control. Speed control is
achieved by the hydraulic valve only. Using the on/off switch repeatedly will cause exces-
sive wear, causing premature replacement of electrical components. An Emergency Stop
Switch (E-Stop) is located by right hand (Figure P). To start machine, twist the E-Stop
until it pops up. There is a seat safety switch. The operator must be properly seated for
machine to operate. Push the ON button to start machine.
MACHINE START-UP PROCEDURE
Verify 70 amp circuit breaker is in “On” position (Figure Q).
Verify 48-volt blue plugs are firmly connected (Figure R).
Operator should be properly positioned on seat.
Twist E-Stop (Figure P) to “up” position.
Push green “ON” button.
Maneuver machine with hydraulic levers (see instruction below).
HYDRAULIC LEVERS (FIGURE S)
The hydraulic levers steer the machine. For smooth even movement, always move levers
slowly. Fast movement of control levers will result in jerky, uneven movement.
Both levers forward  move the machine forward.
Both levers backward  move the machine backward.
The left lever forward and the right lever backward  turn the machine quickly
to the right.
The left lever backward and the right lever forward   turn the machine quickly
to the left.
Only using the left or right lever forward  , turns the machine slowly to the right or left.
Only using the left or right lever backwards , turns the machine slowly to the left or
right.
Correcting direction while moving forward is accomplished by slightly reducing pressure
on one lever or the other while moving.
The center position on levers causes wheels to lock-up.
Always chock wheels and tie down machine when transporting.
Control levers are low in vibration.
EMERGENCY STOP SWITCH (FIGURE P)
The emergency stop switch is designed to kill the power to the system.
SEAT SWITCH
The seat has a safety switch. Operator must be properly positioned for machine to run.
TO STORE MACHINE (FIGURE R)
When the machine is in storage, remove the blue plug and turn circuit breaker to off. This
will help to keep someone from operating the machine when it shouldn’t be.
FIG. P
FIG. Q
FIG. R
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FIG. S
On
Emergency Stop Switch
Circuit
Breaker
48 Volt
Blue Plugs
Hydraulic
Levers

Machine Operation
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CYLINDER LIFT (FIGURE T)
The cylinder lift lever raises and lowers the cylinder and cutting head. After setting slide
plate to proper height, use the cylinder lift lever to set blade to proper cutting angle. Pull
back on the cylinder lift lever to raise the cutting head. Push the cylinder lift lever for-
ward
 to lower the cutting head. Continuing to push the cylinder lift lever forward and
it will adjust the angle of the cutting head. This will also jack up the front of the machine
(Figure U). This will need to be done when doing maintenance on the machine (ie: wheel
changing, front caster maintenance etc). When doing machine maintenance, besides
raising the cutting head angle, place blocks under the machine (Figure V). Never use the
cutting head only.
OPERATIONAL TIPS
CASTER
Keep clean and free of debris, make sure it can move freely. Clean as needed. Inspect
before each use. Grease once a month.
Moving a “weighted” machine only on the front caster and not on the cutting head or the
Front Wheel Assembly can seem to make the machine turn sluggish. It might turn hard to
the right or the left. This is normal.
FOOT PEG
Keep feet resting and secured on foot pegs when operating machine. Foot pegs are
adjustable. Make sure securing nut is securely tightened
SEAT
Always be properly seated before operating machine. Machine will not run if the operator
is not properly seated
DISARM MACHINE
Remove blade or drop cutting head to the floor when machine is not in use.
LEAKAGE
Keep fittings and hoses tight. If a leak is noticeable, retighten fitting. If leakage persists,
remove the connection and inspect.
ANGLE OF THE HEAD IS SET STEEP
When raising the front of the machine to a steep angle, the bottom of the slide plate
should be raised so it is higher or even with the bottom of the guide channels, 15 to 18
cm (6” to 7”) off the floor. This will allow for a steep blade angle without tipping the ma-
chine too far back and is usually used for re-scraping. The most common mode for take
up has the slide plate approximately 2.5 cm (1”) from the floor.
FIG. T
FIG. U
FIG. V
WARNING: DO NOT ALTER A SWITCH OR LEVER. DO NOT DEFEAT A
SAFETY DEVICE.
WARNING: DISARM MACHINE BY REMOVING THE CUTTING HEAD OR
DROPPING THE CUTTING HEAD TO THE FLOOR WHEN THE MACHINE IS NOT
IN USE.

Machine Operation
FIG. W
DIALING IN THE MACHINE
Dialing in the machine is matching the correct cutting head, blade size, blade angle and
blade width to the machine to make the material removal as easy as possible. For every
material being removed, there is an optimum blade width, thickness, sharpness, angle
and bevel (bevel up or bevel down).
ADJUSTING THE DUAL LIFT SLIDE PLATEAND CUTTING HEAD
• For safety prior to adjusting the dual lift hydraulic slide plate make sure the channel
guide is free of any debris and the machine is safely positioned on a flat surface.
• Be properly seated in the operator’s seat.
• Twist the Red Emergency Stop switch located on the right side of the operator, the
spring-loaded switch will pop up when twisted.
• Push the Green ‘ON’ button to start the machine.
• Adjacent to the left hand steering lever is a straight and narrow handle rod, this
handle rod raises and lowers the front cylinder and is referred to as the ‘cutting
head lever’. To set the height of the hydraulic slide plate start by first adjusting the
angle or pitch of the cutting head holder.
• Pull back on the cutting head lever and raise the cutting head holder to an angle
higher than the bottom of the slide plate.
• Using the lever adjacent to the right hand steering lever raises and lowers the
hydraulic slide plate and is referred to as the ‘slide plate lever’. To lower the slide
plate the operator must push forward on the slide plate lever. Reversely, to raise
the slide plate the operator must pull back on the slide plate lever.
While the hydraulic slide plate can be adjusted to multiple positions there are two basic
slide plate settings.
• Low Setting: the hydraulic slide plate is positioned 2.5 cm (1”) off the floor. This
setting is most commonly used during initial scraping or removal applications; such
as carpet, VCT, ceramic tile and wood flooring. (Note: The “low” setting on older
model hydraulic slide plates may stop the plate within one to two inches of the
floors surface.)
• High Setting: the hydraulic slide plate is positioned 15 cm (6”) off the floor or in
most cases flush with the bottom of the slide plate channel guide. This setting is
most often used for re-scraping glues, mastics, thin sets and soft coating.
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Machine Operation
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SHEAR POINT
The shear point is the point where material to be removed will cut cleanly from the floor. If
the blade is too wide, too dull, or too steep, the shear point is lost.
WEIGHT VS. SHARPNESS
The most common way to compensate for a dull blade is to add more weight and raise
the blade angle (see high setting). Weight allows dull blades to be used to a point.
Weight also causes blades to dull and break easier. Blades of any thickness tend to
catch cracks and expansion joints and will bend or break the blade if set at a high angle.
For best results, run a small ditching blade at a low angle to identify as many cracks and
joints as possible. If blades are breaking, you are misunderstanding the conditions.
CUTTING HEADANGLE
Set the cutting head angle to where the material comes up the easiest. Start with a lower
angle setting and raise slightly as the blade wears to maximize the shear point.
STEEP CUTTING HEADANGLE
A steep angle is only used for re-scraping. The slide plate has to be raised so the bottom
of the slide plate is higher or even with the bottom of the guide channels (Figure X). Rais-
ing the slide plate to an angle too steep when operating will cause the machine to jump
and buck. It does not give the operator a clear vision of the cutting head and it raises
the machine to operate at a unsafe operating height (Figure Y). Failure to raise the slide
plate could cause machine damage and/or bodily injury.
SWIVELHEAD
The swivel head keeps the blade in contact with the floor even when the floor is uneven.
When using a flat blade, turning the head over 180° allows another sharp edge on the
blade without having to replace the blade.
CUTTING HEAD INSERTION
With machine off, insert desired cutting head into cutting head holder. Secure with cutting
head clip.
SAVING TIME WITH EXTRA CUTTING HEADS
Having additional cutting heads will save time on the job. Insert blades into the extra
cutting heads before starting a job. When the blade is dull, instead of taking the time to
replace it or sharpen it on the job, remove the cutting head and replace it with another.
In some isntances a different type or size of blade is needed. Installing the other size or
type of blade in a seperate cutting head limits operation down time.
FIG. X
FIG. Y
Slide Plate is not raised

Machine Operation
FIG. AA
SHANK BLADE INSERTION
Shank blades (Figure AA) do not require a cutting head. Insert desired shank blade into
cutting head holder. Secure with cutting head clip.
BLADE INSERTION OR BLADE CHANGING (FIGURE BB)
Using a 3/4’’ socket wrench, loosen bolts on cutting head. Quantity of bolts will very
depending upon cutting head size. Insert blade into the cutting head to back of notch
(Figure CC). Tighten firmly. Note: A cordless 3/8’’ drive impact wrench will speed up this
process, especially out on the job.
BLADE SETTING
• Proper blade size and placement, depending on material and sub-floor type, af-
fects performance.
• For better results during difficult removal applications use a smaller blade.
• Start with a narrow blade, then increase blade size to optimize cutting pass. Nar-
rower blades work easier than wider blades and usually clean the floor better.
Wider is not always better or faster.
• Normally bevel on blade is up for concrete (Figure CC). Bevel down for wood (Fig-
ure DD) and shoe blades (Figure EE) for soft sub-floors.
• KEEP BLADES SHARP.
• Dull blades greatly affect the performance of the machine and reduce cutting ability,
resharpen or replace as needed.
• After you have removed a portion of material, clear the work area of debris. This
will give the machine maximum performance and help to keep the work area safe.
• Always wear gloves when handling blades.
• Everyone in work area should wear eye protection.
SELF-SCORING BLADES
Instead of pre-scoring a job, for soft goods (carpet, vinyl, linoleum, membrane) the self-
scoring blades automatically do the scoring.
APPLICATION SET-UP
CERAMIC SET-UP (FIGURE FF)
The slide plate should be adjusted to a low setting 2.5 cm (1”) off the floor. Use a Shank
Blade or a Shank Blade with a carbide tip.
FIG. BB
FIG. CC
FIG. DD
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FIG. EE
Blade Securing Bolt Cutting Head
Blade Notch
WARNING: ALWAYS WEAR GLOVES WHEN HANDLING BLADES.
CAUTION: BLADES ARE SHARP; USE EXTREME CAUTION WHEN HANDLING.
CAUTION: NEVER CHANGE CUTTING HEAD OR SERVICE BLADES WHILE
MACHINE IS RUNNING.
WARNING: DISARM MACHINE WHEN IT IS NOT IN USE. REMOVE THE
CUTTING HEAD OR DROP CUTTING HEAD TO THE FLOOR. FAILURE TO DO SO
COULD CAUSE BODILY INJURY.

Machine Operation
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WOOD SET-UP (FIGURE DD)
The slide plate should be adjusted to a low setting 2.5 cm (1”) off the floor. Use Shank
Blades, Shank Blades with carbide tips or a 15 to 18 cm (6”or 8”) Cutting Head with Shoe
Blades, Bent Shoe Blades or Heavy Duty Blades. Note: Run machine 45° to the grain of
the wood.
SECONDARY BACKING CARPET SET-UP
The slide plate should be adjusted to a low setting 2.5 cm (1”) off the floor. Use a Cutting
head from 25 to 68 cm (10” to 27”) with Heavy Duty Blades or a Cutting Head from 25 to
35 cm (10” to 14”) with a Self-Scoring Blade.
FOAM BACK CARPET SET-UP
The slide plate should be adjusted to a low setting (1”) one inch off the floor. Use Cutting
Heads from 25 to 35 cm (10” to 14”) with Self-Scoring Blades. If it is not stuck tight, use a
Cutting Head from 35 to 68 cm (14” to 27”) with a Standard Blade.
DOUBLE STICK CARPET SET-UP
The slide plate should be adjusted to a low setting 2.5 cm (1”) one inch off the floor. It is
best to test to see which is the easiest way to remove double stick. Start with a Cutting
Head from 25 to 35 cm (10” to 14”) with Self-Scoring Blades (Figure HH). If self-scoring
blades do not work, score thru the carpet (Figure II) the width of the blade (Standard
Blade) and scrape up. In some cases, carpet might pull off the pad and then scrape up
the pad separately. Usually leaving carpet connected to the pad works the best. Sharp
blades are necessary for proper operation.
Note: When removing carpet from over VCT Tile and the tile needs to be saved, run the
machine at a 45° angle over the tile. This should help to save the tile.
VCT TILE SET-UP
The slide plate should be adjusted to a low setting 2.5 cm (1”) off the floor. If goods come
up easily, change to a larger Cutting Head. If goods come up harder, use a Cutting Head
from 15 to 20 cm (6” to 8”) with a Premium High Tempered Blade (.062) to match cutting
head size. Sometimes a .094 blade may work better. If goods remove easily, a Tile Box
#7074 can be used. A tile box also works for wind rowing, assists for a fast clean-up and
collection of tile debris for quick removal.
RUBBER TILE SET-UP
The slide plate should be adjusted to a low setting (1”) one inch off the floor. Use a Cut-
ting Head from 15 to 35 cm (6” to 14”) with self-scoring blades or use ditching method
with a flat blade.
RE-SCRAPING SET-UP
Slide plate should be set high, 15 to 20 cm (6’’ to 8’’) off the floor. Use a Cutting Head
from 20 to 68 cm (8” to 27”) with Scraper Blades to match cutting head size. A 15”
scrapper blade would use a 35 cm (14”) Cutting Head. Razor Blades are faster but a
Cutting Head from 20 to 35 cm (8” to 14”) can be used with a Standard Blade. Flip head
regularly.
THIN COATING SET-UP
Slide plate could be set high, 15 to 20 cm (6’’ to 8’’) or low 2.5 cm (1”) off the floor. Test
to see which works best. Use a Cutting Head from 20 to 68 cm (8” to 27”) with Razor
Blades to match cutting head size.
WORKING OVER CONCRETE
Blade should be bevel up when working over concrete. Pretty much anything over con-
crete works. Try different set-ups to see which works best. If goods come up difficult, the
slide plate should be at a low setting, 2.5 cm (1”) off the floor. Use a smaller size blade. If
goods come up easily, a wider blade can be used.
FIG. FF
FIG. GG
FIG. HH
FIG. II
Slide Plate 1” Off Floor
Slide Plate 1” Off Floor
Slide Plate 1” Off Floor