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Braun Corporation BF3255Y-12V, Operator, Installation, Service Manual

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Braun Corporation BF3255Y-12V Operator, Installation, Service Manual Download Page 36

Page 34

Pump, Bidirectional

Displacement

69 BAR

1000 PSI

.033

.020

Pump Motor,

Bidirectional

Flow Control

Valve

Fixed Orifice

3 Way 2 Position

Shuttle Valve

M

M

Description

Symbol

Reservoir,

Vented

Relief Valve

Check Valve

Hydraulic Port

Filter Screen

86 BAR

1250 PSI

Cylinder, Double 

Acting

HYDRAULICS

  Hydraulic Schematic 

- 

BF3255Y

Summary of Contents for BF3255Y-12V

Page 1: ...ailure to do so may result in serious bodily injury and or property damage Braun RA300 Transit Ramp Model BF3255Y 12V Commercial Braun RA300 Transit Ramp Model BF3255Y 12V Providing Access to the Worl...

Page 2: ...l includes operating instructions installation instructions servicing instructions and instructions for troubleshooting if needed Braun ramps are built for dependability and will provide years of serv...

Page 3: ...Ramp Operation Safety Precautions 13 14 Installation Instructions Installation Requirements 14 Chassis Requirements 14 Door Opening 15 Obstructions 15 Installation Illustrations 15 17 Electrical Conne...

Page 4: ...terminology Details regarding lift model variations terminology direction and compo nents are provided on pages 4 and 5 As viewed from outside the vehicle LEFT RIGHT OUT IN Ramp Terminology Illustrat...

Page 5: ...Terminology Illustration Cylinder As viewed from outside the vehicle OUT IN RIGHT LEFT Pan Weldment Relays Counter Cable Tension Gas Spring Pump Ramp Drive Arm Cam Microswitch Assembly Cylinder Cable...

Page 6: ...draulic cylinder No sensitive electronic controls or sensors are required for opera tion All RA300 ramp models feature gravity down drift during the deploy cycle When deploying the ramp the motor stop...

Page 7: ...driven three stage drive arm assembly deploys and stows the ramp assembly Ramp Actions and Functions Deploy Deploy is the action of the ramp assembly extending and unfolding to ground level when the D...

Page 8: ...nd bystanders clear of area in which the ramp operates Load and unload clear of vehicular traf c Open ramp door s fully and secure before operating ramp Do not overload or abuse The rated capacity is...

Page 9: ...chair wheels pull wheelie when on the ramp The wheelchair must be positioned in the center of the ramp when loading and unloading Keep ramp owner s manual in ramp mounted vehicle at all times Maintena...

Page 10: ...nformation is included It is the responsibil ity of the attendant to properly open and close the ramp access door s to activate interlock s to properly activate the ramp power functions as well as ass...

Page 11: ...part of your transit agency s daily service program Simple inspections can detect potential operational problems Operation Procedure Review Transit agency supervisors should train and educate all driv...

Page 12: ...atus that does not t on the ramp Do not exceed the 660 pound 300 kilograms load capacity of the ramp Passengers should enter and exit one at a time The attendant should not board the ramp with the pas...

Page 13: ...r and exit the vehicle on the ramp in the safest manner ADA requirements state that transit drivers at tendants must assist with attaching and removing wheelchair and occupant restraint belts Ramp pas...

Page 14: ...fect on the center of gravity The wheelchair passenger s center of gravity and their ability to maintain stability and balance must be kept in mind by the wheelchair passenger and the attendant The ai...

Page 15: ...Symbols SAFETY FIRST Know That C CAUTION This symbol indicates important information regarding how to avoid a hazardous situation that could result in minor person al injury or property damage A suppl...

Page 16: ...and D The recom mended height of the support tube is 13 3 4 above ground level Kneeling Vehicles This dimension measured with sus pension lowered ADA Installations with the support tube positioned hi...

Page 17: ...d to t around the ramp pan horizontal border lip There must be a minimum 1 8 clearance between the deployed ramp assembly and the vehicle oor or any obstruction on the oor such as a rubber sill or thr...

Page 18: ...Floor Pocket Clear Opening Dimensions As viewed from outside the vehicle Left Right Out In Chassis Chassis CL C L MINIMUM DOOR OPENING WIDTH 34 Figure F Vehicle chassis oor pocket con guration must b...

Page 19: ...oyed ramp assembly and the vehicle oor or any obstruction on the oor such as a rubber sill or threshold Chassis Chassis Figure H As viewed from outside the vehicle Left Right Out In Stowed RA300 Ramp...

Page 20: ...IN signal must be terminated in the supplied Deutsch connector The ramp installer provides an appropriate control switch for the end user A momentary contact ramp control switch center off will typica...

Page 21: ...IGNAL TO DEPLOY RAMP MOMENTARY SWITCH D A G E F C B H TO USER DEPLOY 14 GA TO USER STOW 14 GA VEHICLE GROUND 12 GA POWER SOURCE 12 GA D C B A RECOMMENDED WIRE GAUGE COLOR WIRING PROVIDED BY INSTALLER...

Page 22: ...lent Penetrating Oil Aerosol Can Stainless Stick Door Ease 1 68 oz Style tube Stick tube Inboard Ramp Hinge LO Outboard Ramp Hinge concealed LO Gear and Gear Rack internal DE Note See the Maintenance...

Page 23: ...formed as speci ed by an authorized service technician Failure to do so may result in serious bodily injury and or property damage WARNING cedures and will vary according to ramp use and conditions Tr...

Page 24: ...rm slots for excessive wear or damage Clean ramp and ramp mounting area ensure no debris in area to obstruct stowing stacking Cycle ramp and observe drift speed during deploy and stow functions Inspec...

Page 25: ...r hoses ttings seals etc for leaks if uid level is low Inspect vehicle to ramp wiring harness Mounting Decals and Antiskid Use Braun 32840 QT Exxon Univis HVI 26 hydraulic uid do not mix with Dextron...

Page 26: ...nd the current to the Deploy Relay is interrupted thus stopping the current to the pump motor The platform then drifts downward to ground level during which at some position the Drift Out microswitch...

Page 27: ...rther before pump shuts off Drift Out Microswitch Cam 2 Turn Cam 2 clockwise to start Drift Out function sooner shut pump off Turn Cam 2 counter clockwise to start Drift Out function later allow ramp...

Page 28: ...valve is preset at 1000 psi The Stow pressure relief valve is preset at 1250 psi Do not tamper with this adjustment unless absolutely necessary will not stow or deploy ramp and then only after contac...

Page 29: ...OUT Cam Adjustment Procedures Drift OUT Speed Cam 1 Drift out cam controls the speed that the ramp moves when the ramp is almost fully deployed and the motor shuts off 1 Loosen the set screw in the dr...

Page 30: ...e Check for loose terminals or broken wire Correct or replace Disconnect harness from ramp Using volt meter test probe 8 pin Deutsch male plug terminals as follows Pin A 12 24 V Pin B Ground Pin C V w...

Page 31: ...hysical obstruction 20 lb or more on ramp 2 32 Mechanical binding 2 33 Deploy pressure relief valve setting too low 2 34 Low hydraulic uid supply Note Fluid should be changed if there is visible conta...

Page 32: ...contamination or other wise damaged 4 51 See 2 40 4 61 See 2 40 and 2 50 4 71 See 2 35 2 36 and 2 62 Adjust or replace See Microswitches in Systems Descriptions for details Connect repair or replace A...

Page 33: ...Page 31 BLANK for LAYOUT...

Page 34: ...A300 TRANSIT RAMP ASSEMBLY POWER CONNECTIONS CONTROL SIGNALS PROVIDED BY INSTALLER SYMBOL KEY DRIFT OUT MICROSWITCH DEPLOY RELAY COUNTER 14 GA BL BK 12 GA 12 GA 12 GA RECOMMENDED WIRE GUAGE GROUND 12...

Page 35: ...SOURCE 12 GA TO DEPLOY INDICATOR 14 GA TO STOW INDICATOR 14 GA PLUG NOT USED PLUG NOT USED 4 3 2 1 COLOR LOC COUNTER WIRE CODE COUNTER 87 87a 30 85 86 COM N O N C COLOR PIN MICROSWITCH CONN N C N O CO...

Page 36: ...0 Pump Motor Bidirectional Flow Control Valve Fixed Orifice 3 Way 2 Position Shuttle Valve M M Description Symbol Reservoir Vented Relief Valve Check Valve Hydraulic Port Filter Screen 86 BAR 1250 PSI...

Page 37: ...006 5 2 Hose Assembly 10 1 8 Dia SW SW 16004A 010 6 3 Hose Assembly 12 1 8 Dia SW SW 16004A 012 7 2 Hose Assembly 28 1 8 Dia SW SW 16004A 028 8 9 Elbow 45 7 16 20 7 16 20 SAE Male O Ring 24505 9 2 Tee...

Page 38: ...__V Hydraulic RA300 33364 42 3 Bolt 3 8 16 x 1 2 316SS Hex BF00249 43 1 Plate Tapped 4 40 Microswitch 24998 44 85 Screw 10 32 x 3 8 FL HD HX SKT Auto Black 24537 45 3 Microswitch Sealed 30205 46 1 Sp...

Page 39: ...6 18 6 14 56 57 67 61 76 61 61 61 14 15 50 15 11 74 74 4 24 44 44 24 24 5 6 17 7 6 7 10 16 60 61 69 67 73 64 61 72 65 66 66 62 66 69 67 71 61 8 8 9 41 44 75 42 19 20 21 22 22 23 24 24 61 61 24 24 24...

Page 40: ...ed View Deployed View Power Unit Hydraulic Pump Module Voltage 12 VDC Current 30 Amps Max Inputs Required 12 Volt Supply Ground Ramp Out Signal Ramp In Signal Interlock Signal Notes Mounting holes bra...

Page 41: ...ormal speed Is the lift power source adequate Do the drive arms clear the ramp and housing Is ramp operation quiet no rattles abnormal sounds etc Are the ramp posted decals worn missing or illegible I...

Page 42: ...Over 300 Braun Dealers Worldwide Providing Access to the World Providing Access to the World International Corporate Hdqrs P O Box 310 Winamac IN 46996 USA 1 800 THE LIFT 574 946 6153 FAX 574 946 4670...

Page 43: ...ed Braun dealer completes the warranty work The warranty registration card accompanying this ramp is to be completed and returned to The Braun Corporation within 20 days of purchase If Braun receives...

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