Blastrac BMS-270LPII User manual

Model
BMS – 270LPII

Operating Instructions
Model
BMS – 270LPII

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Revised 5/20/2003 12:33 PM
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Table of Contents BMS-270LPII
Technical Data ...........................................................................................................3
1.1 Rating ..........................................................................................................4
1.2 Unit Specification.........................................................................................4
1.3 Operative Range and Correct Usage...........................................................5
1.4 Machine Code..............................................................................................5
Safety Precautions.....................................................................................................6
2.1 Organizational Precautions..........................................................................7
2.2 Safety Precautions/Operation......................................................................9
2.3 Safety Precautions/Maintenance ...............................................................10
2.4 Precautions................................................................................................11
2.5 Maintenance Mode ....................................................................................12
2.6 Caution Points............................................................................................13
General ....................................................................................................................15
3.1 Introduction................................................................................................16
3.2 Operating Instructions................................................................................16
3.3 Maintenance ..............................................................................................17
3.4 Delivery (Components) ..............................................................................17
3.5 Description.................................................................................................18
3.6 Operating Controls.....................................................................................19
3.7 Tools..........................................................................................................21
3.7.1 Blade Holder ...................................................................................21
Transport..................................................................................................................22
4.1 General Information...................................................................................23
4.2 Conditions for Initial Set-up........................................................................23
4.3 Initial Set-Up ..............................................................................................23
4.4 Equipment Specifications...........................................................................23
Initial Operation........................................................................................................24
5.1 Preparations Before Initial Operation.........................................................25
5.2 Initial Operation..........................................................................................25
Operation .................................................................................................................27
6.1 Start-up Procedure.....................................................................................28
6.2 Shutting Down............................................................................................29
6.3 Operational and Maintenance Procedures.................................................30
6.4 Start-up After Maintenance or Repair ........................................................30
6.5 Procedures Before and After Long Storage Time......................................30
Maintenance.............................................................................................................31
7.1 Instructions.................................................................................................32
7.2 Maintenance and Inspection List................................................................33
7.3 Repairs.......................................................................................................34
7.4 The Scraper...............................................................................................35
7.4.1 Changing the Scraper Blade and Adjusting the Clamp ...................35
7.4.2 Tool List for Scraper Blade Removal...............................................35

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7.5 Changing the Hydraulic Oil Filters..............................................................36
7.5.1 Changing the Return Line Oil Filter Element............................................36
7.5.2 Changing In-tank Suction Strainer and Suction Filters....................37
7.6 Lubricant Storage.......................................................................................38
Electrical Systems....................................................................................................39
Troubleshooting........................................................................................................40
9.1 Scraper Troubleshooting........................................................................41
Hydraulic System .....................................................................................................45
10.1 General System Description...................................................................46
10.2 Hydrostatic Pump ...............................................................................47
10.3 Auxiliary Pump .......................................................................................48
10.4 Wheel Drive Motors................................................................................48
10.5 Control Valve Assembly .........................................................................49
10.6 P.O. Check Valve...................................................................................50
10.7 Oil Cooler ...............................................................................................50
10.8 Return Filter............................................................................................51
10.9 Suction Strainer......................................................................................51
10.10 Suction Filters.....................................................................................52
10.11 Hydraulic Oil .......................................................................................53
10.12 Needle Valve, Bi-Directional Metering ........................................................54
Reference Prints ......................................................................................................55

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Operating Instructions BMS-270LPII
Technical Data
Section 1
1.1 Rating
1.2 Unit Specification
1.3 Operative Range and Correct Usage
1.4 Machine Type Code

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Operating Instructions BMS-270LPII
Technical Data
1.1 Rating
Unit/Designation: Blastrac®Multiscraper
Machine Type: BMS-270LPII
Manufacturer: Blastrac®
13201 North Santa Fe
Oklahoma City, OK 73114
1.2 Unit Specification
Unit Specifications:
Multiscraper
Length 79.50 inches
Width 30.50 inches
Height 65 inches
Weight 2,590 pounds
Wheelbase 44.19”

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Operating Instructions BMS-270LPII
Technical Data
1.3 Operative Range and Correct Usage
The BMS-270LPII is designed to remove VAT, VCT, ceramic tile, hardwood floors,
mastic and cementitious materials from horizontal surfaces. Using the multiscraper for
purposes other than its intended use may result in equipment damage, property damage,
and injury or death to the operator and surrounding personnel. The manufacturer will not
be liable for damages, injury or death resulting from improper usage of the multiscraper
by the multiscraper owner or renter.
1.4 Machine Code
BMS – 270LPII
B -- lastrac 270 Width of Blade (27.0 inches)
M -- ulti LP Liquid Propane
S -- craper II Second Generation

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Operating Instructions BMS-270LPII
Safety Precautions
Section 2
2.1 Organizational Precautions
2.2 Safety Precautions/Operation
2.3 Safety Precautions/Maintenance
2.4 Precautions
2.5 Maintenance Mode
2.6 Caution Points

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Operating Instructions BMS-270LPII
Safety Precautions
2.1 Organizational Precautions
The Operating Instructions should be kept in close proximity to the multiscraper. These
instructions should be kept in a clean, dry area to use as a quick reference at all times. In
addition to the Operating Instructions, general and legal information regarding accident
prevention and environmental protection should be kept in the same location. This
information should refer to regulations that pertain to the handling of dangerous materials
or the need to wear protective clothing.
The personnel operating or maintaining the multiscraper must read and understand the
Operating Instructions for the BMS-270LPII and additional components such as the
Kohler engine that are included in this manual before operation or maintenance of this
equipment.
Machine operators should be checked on a regular basis to confirm they are following
safe work practices as described in this manual.
Personnel operating the BMS-270LPII should not wear long, loose hair or clothing, or
jewelry of any kind, including rings that can be caught in moving parts. Operating the
BMS-270LPII with disregard for common safety practices may result in serious injury or
death to the operator and surrounding personnel.
All warnings and safety instructions must be kept in good readable condition.
See reference print 700-0119 for safety decal location.
If the BMS-270LPII exhibits any unusual performance from its normal operation that
may relate to its safety features, the multiscraper must be stopped immediately. Do not
operate the multiscraper without all safety devices operating correctly and all safety
decals visible and legible.
Any modifications or changes to the multiscraper without prior written approval from the
manufacturer could result in serious injury or death and may void the warranty. These
changes apply to the structure and/or the adjustment of devices that may compromise the
safety characteristics of the multiscraper. EXAMPLE: Welding should not be performed
on any supporting elements, near or on fuel tanks, or on the hydraulic oil tank.

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Operating Instructions BMS-270LPII
Safety Precautions
2.1 Organizational Precautions Cont’d
Spare parts must comply with the technical specifications laid out by the original
manufacturer. Only original spare parts are recommended.
Periodic checks or inspections outlined in this instruction manual must be performed
within the prescribed time limits.
Maintenance personnel should have the proper tools available to perform their assigned
tasks.
Operating and maintenance personnel must verify availability of appropriate fire
protection equipment, be properly trained in the use of the equipment and know how to
contact the Fire Department or Emergency Medical Service if needed.

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Operating Instructions BMS-270LPII
Safety Precautions
2.2 Safety Precautions/Operation
Normal Operation:
Avoid any mode of operation that may be unsafe!
Take precautions to ensure that the multiscraper is in good working order and that it is
only operated under safe conditions.
The multiscraper should be inspected for damage and defects at least once during every
working shift. Starting and stopping procedures must be followed in accordance with the
Operating Instructions. Before starting the multiscraper, be sure that no person is likely
to be endangered by the multiscraper movement.
DANGER: Engine exhaust gases contain poisonous carbon monoxide. Carbon
monoxide is an odorless and colorless and can cause injury or death if inhaled. Do
not use equipment indoors without adequate ventilation. Refer to OSHA guidelines
and regulations concerning maximum levels of exposure to carbon monoxide gases
and other hazards associated with using internal combustion engines.
The multiscraper has been equipped with a safety switch under the seat, which requires
the operator to be seated before the multiscraper can be operated. Do not attempt the
start-up procedure without being seated on the machine.
WARNING: Bypassing this or any other safety devices could result in damage to the
multiscraper and injury or death to the operator and surrounding personnel.

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Operating Instructions BMS-270LPII
Safety Precautions
2.3 Safety Precautions/Maintenance
Adjustments, maintenance and inspection instructions given in the manual must be
followed at the suggested intervals as well as recommendations for the replacement of
parts or assemblies. These activities must be carried out by qualified personnel.
Before carrying out any activities that could affect multiscraper operation, changes in
production, the tooling or the adjustment of the multiscraper or any related safety device,
follow the recommendations given in this instruction manual. When the multiscraper has
been put in a Maintenance Mode as outlined in Section 2.5 in order to perform
maintenance or repair work, precautions must be taken to ensure that it cannot be turned
on inadvertently.
Before carrying out maintenance or repair work, let the engine and the exhaust system
cool down; remove all traces oil, combustible fuel or cleaning fluids from the scraper, its
connections and fittings, in particular. Do not use any aggressive cleaning products. Be
sure that all cleaning rags are fiber free. Retighten all loose fittings found during
maintenance and repair work!
If it is necessary to dismantle safety devices during retooling, maintenance or repair
work, be sure that they are reinstalled properly and working before starting the
multiscraper.
Dispose of oils, liquids and used parts in accordance with local environmental
regulations.

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Operating Instructions BMS-270LPII
Safety Precautions
2.4 Precautions
Gases, Dust, Steam, Smoke
Do not weld, flame cut or perform grinding work on the multiscraper without written
authorization from the manufacturer. The danger of fire or explosion exists when work
of this nature is done. Begin maintenance work only when the multiscraper is put into its
Maintenance Mode as outlined in Section 2.5.
Before welding, cutting or grinding on the multiscraper, remove all dust and combustible
materials from the area and provide adequate ventilation to reduce the risk of fire or
explosion.
When working in a confined space, adhere to the appropriate safety regulations.
Place fire extinguishers and fire blankets within easy reach of potential fire hazards.
DANGER: Engine exhaust gases contain poisonous carbon monoxide. Carbon
monoxide is an odorless and colorless and can cause injury or death if inhaled. Do
not use equipment indoors without adequate ventilation. Refer to OSHA guidelines
and regulations concerning maximum levels of exposure to carbon monoxide gases
and other hazards associated with using internal combustion engines.

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Operating Instructions BMS-270LPII
Safety Precautions
2.5 Maintenance Mode
Definition:
State or condition of the multiscraper that minimizes the danger of mechanical, electrical,
pneumatic or hydraulic hazards.
Putting the multiscraper into the maintenance mode:
Move the multiscraper to level ground.
Turn off the ignition switch and remove the key.
Set the parking brake and make sure the multiscraper cannot move.
Wait until all drives have stopped completely.
Depress E-Stop button.
Close propane tank valve.
Remove key from ignition switch.
Let the engine, exhaust system and hydraulic components cool down.
Warning: Engine, exhaust system and hydraulic component temperatures could
be in excess of 200 °F causing severe burns if touched.

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Operating Instructions BMS-270LPII
Safety Precautions
2.6 Caution Points
Every multiscraper that is not used in accordance with the safety recommendations
can present a danger to its operator or maintenance staff. The owner of the scraper
is responsible for ensuring that all safety precautions are followed during operation
and maintenance of the multiscraper, and that the necessary protective devices are
used.
Below is a listing of points and areas, which demand due caution. This listing is not
intended to be an all-inclusive listing of potential caution points. Operators and
maintenance personnel should use caution working on, in, or around the multiscraper at
all times.
4
5
2
1
3
6
7
7
7
7
1. Hydraulic Hoses
2. Flammable Fuel
3. Wheel Motion
4. Tool Movement
5. Tool
6. Hot Engine, Exhaust System, and Hydraulic Components
7. Pinch Points

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Operating Instructions BMS-270LPII
Safety Precautions
2.6 Caution Points Cont’d
Only use tools that are in good operating condition. Damaged tools should be replaced.
Be certain all personnel that work with the multiscraper have the proper clothing and
accessories. These include gloves, safety glasses with side shields, safety shoes and other
required protective devices.
Be sure that the multiscraper operators and maintenance personnel are familiar with the
following:
Lubrication, cleaning and repair work can only be done when the multiscraper
is put in a Maintenance Mode as outlined in Section 2.5.
Do not remove protective covers, panels, or guards or open doors while any
mechanical parts are moving.
Once maintenance is finished e sure to replace all doors, panels and safety
devices. Be sure all safety devices are functioning.
Do not touch any moving parts or stand in their path.
Before starting the multiscraper, be certain that all personnel are clear of any
caution points and the operator is seated.

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Operating Instructions BMS-270LPII
General
Section 3
3.1 Introduction
3.2 Operating Instructions
3.3 Maintenance
3.4 Scope of Delivery
3.5 Description
3.6 Operating Elements
3.7 The Tools

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Operating Instructions BMS-270LPII
General
3.1 Introduction
Blastrac®wants to thank you for your decision to purchase the BMS-270LPII for your
horizontal floor surface preparation needs.
The BMS-270LPII is designed to remove VAT, VCT, ceramic tile, wood flooring,
carpeting and cementitious material from a variety of horizontal surfaces.
3.2 Operating Instructions
This manual has been written to support the operating and maintenance personnel. A
good understanding of this manual will result in optimum equipment performance and
proper maintenance techniques.
It is very important that all personnel operating and maintaining the BMS-270LPII
read and understand this manual completely before operation or maintenance
begins.
The BMS-270LPII has been manufactured for use in the U.S. In cases where personnel
have an insufficient knowledge of the English language, proper training must be obtained
before using the multiscraper.
Blastrac®offers a training course in order to make the operating and maintenance staff
familiar with all aspects of the multiscraper.
The initial start-up should be carefully monitored. The operator must know the starting
sequence of the individual systems and components and fully understand their functions.

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Operating Instructions BMS-270LPII
General
3.3 Maintenance
Regular maintenance for the BMS-270LPII is extremely important to minimize safety
risks and maximize reliable operation.
Blastrac®recommends using only original equipment repair parts that are outlined in this
manual. Multiscraper owners should maintain a sufficient inventory of high wear parts to
help minimize down time.
3.4 Delivery (Components)
System delivery includes:
Multiscraper
Tool holding fixture with four fastening bolts
Tool as per order (Tile Buster Blade, Straight Blade, Carpet Blade, etc.)

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Operating Instructions BMS-270LPII
General
3.5 Description
8
9
14
7
2
4
1
356
10
11
12 13
1. Ignition Switch 8. Blade Holder
2. Drive Wheels 9. Lights
3. Parking Brake Handle 10. Lift/Lower Blade Control
4. Engine 11. Tachometer/Hour Meter
5. “E” Stop Button 12. Engine Throttle
6. Motion Control Joystick 13. Light Switch
7. Lift Cylinders 14. Propane Tank (LPG
Type)
The Multiscraper (BMS-270LPII) is designed for horizontal floor preparation. Paint,
sealing material, and even thick coatings are removed by means of a tempered steel
scraper blade. Two independent drive wheels give the multiscraper a high degree of
maneuverability. All elements of the multiscraper are hydraulically driven.