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Braun NL Series
Braun NL Series
ual
Man
Service Manual for:
Millennium
Public Use Wheelchair Lifts
Series A5
A5
DOT — Public Use Lift
DOT — Public Use Lift
“DOT — Public Use Lift” verifies that this platform lift meets the
“public use lift” requirements of FMVSS No. 403. This lift may be
installed on all vehicles appropriate for the size and weight of the
lift, but must be installed on buses, school buses, and multi-
purpose passenger vehicles other than motor homes with a gross
vehi
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Congratulations We at The Braun Corporation wish to express our fullest appreciation on your new purchase. With you in mind, our skilled craftsmen have designed and assembled the finest lift available. This manual provides service-related material. Refer to the FMVSS No. 403 Quick Reference Installation Sheet for installation instructions, operating instructions and maintenance procedures. ™ Braun Millennium Series lifts are built for dependability and will provide years of pleasure and
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Contents Troubleshooting and Maintenance Lift Terminology ............................................................ 2 Switch and Sensor Locations ..................................... 3 Certification Checklist Diagnostic Procedures ......... 4 Platform Fold Pressure Adjustment ............................ 5 Outer Barrier Fold Pressure Adjustment .................... 5 Platform Angle Adjustment ...................................... 6-7 Platform Stop Blocks ............................
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Lift Terminology Hand-Held Pendant ™ Lift-Tite Latches (2) Towers (2) Control Top Parallel Arms (2) Visual Threshold Warning Main Cylinders (2) Audible Unfold Assist Compression Springs (2) Threshold Warning Adjustable Quiet-Ride Stow Blocks (2) (not visible) Platform Lights Opposite Pump Side Vertical Arm Vertical Arm Covers (4) Threshold Handrails (2) Warning Plate Pump Module (Rear) Base Plate Inner Roll Stop Bottom Parallel Arm (2) Saddle (2) Upper Fold Arm (2) Lower Fold Arm (2)
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Switch and Sensor Locations Threshold Strip Switch 31221A (Qty. 2) Pressure Switch *IB Occupancy 31199 Microswitch Assy. 32642A *Bridging Microswitch 31010FA *Stow Microswitch 23184 (Qty. 2) *Rotary Position Sensor 31094A Outer Barrier Latched Magnet Inboard Right 31664 Outer Barrier Latched Left Outboard Magnetic Sensor 32645NA60 Outer Barrier Raised Magnet Outer Barrier Raised 31664 Magnetic Sensor 32645NA60 *Note: Mirror image for right (front) pump lifts. Page 3 ® 32819 DOWN
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Certification Checklist Diagnostic Procedures The following operations and conditions must be functionally verified in order for the lift to be FMVSS 403/404 compliant. If an operation does not function as described or a condition is not met, follow the refer- enced procedures to correct the problem or contact a Braun Corporation Product Support representative at ® 1-800-THE LIFT . • Vehicle movement is prevented unless lift door is closed, ensuring the lift is stowed. 1. Verify lift stowed
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Platform Fold Pressure Adjustment 1. Position the platform at the floor level loading position. 2. Loosen the hex nut on the adjustment screw (do not remove hex nut). 3. Turn the adjustment screw counter clockwise until the platform does not fold when the Fold button is pressed. 4. Turn the adjustment screw clockwise in 1/4 turn Platform Fold increments and press the Fold button until the Adjustment Allen Screw platform folds completely (Note: Return the platform to floor level po
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Platform Angle Adjustment Adjusting the platform angle based on the Millennium “NL” Series relationship of the platform at ground level directly affects the angle of the platform Figure C when positioned at floor level. Unfold the lift and visually examine the angle of the platform when positioned at Angle A floor level. Lower the platform fully and equals Angle B. note the angle of the platform when it reaches ground level also. The outboard end of the platform (toe) must contact
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Platform Angle Adjustment Adjustment Allen screws are To raise the outboard end Note: Both adjustment screws provided on each side of the lift of platform - turn adjustment must be adjusted equally. platform for adjusting the platform screw clockwise. ® angle. Adjust platform angle as Apply Loctite to adjustment specified on previous page. To lower the outboard end screws following adjustment. of platform - turn adjustment screw counterclockwise. Platform Angle Adjustment Screw Allen
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Platform Floor Level Adjustment Before setting floor level position: tion if unable to stop platform E when powering lift. • Adjust platform angle as detailed on page 6. 2. Turn Lift Power switch Off. • Ensure both stop blocks are 3. Press Floor Position Set but- making full contact with verti- ton (located between pump cal arms (details on page 7). housing and lift tower). 4. While pressing the Floor Po- Floor Level Adjustment: sition Set button, turn the Lift Power switch On. 1. Positi
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Bridging Microswitch Adjustment Adjustment Screw Bridging Microswitch Bridging Microswitch: G H The bridging microswitch is located at the bottom of the right (front) vertical arm. See Photos A and B. An adjust- ment screw is built into the platform stop block. The bridging microswitch will be deactivated if the outboard end of the platform contacts the unloading surface before the inboard end while the DOWN switch is pressed. The deactivated bridging mi- croswitch interrupts po
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LCD Lift Codes To better understand the Braun LCD Trouble shooting display you must first understand the numbers that appear on the screen. There are Flashing Codes, Solid Error Codes, and Solid Normal Operational Codes. Flashing Codes #65-89: About 10 seconds after an operation has stopped there are a set of scrolling flashing numbers that indicate whenever a particular sensor or switch has been activated. These numbers will start at number 65 and scroll up to number 89, then start the seque
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LCD Lift Codes Listed below are codes that the lift controller outputs during lift operation. The codes will be displayed on an LCD screen located on the lift control board inside the pump module. See the Manual Operating Instructions in the operator's manual for pump cover removal instructions. Non-Flashing Numbers 01 – Platform stowed 57 – Outer barrier is not up and latched and 02 – Platform unfolding ground detect switch did not deactivate (Century 03 – Platform unfolding paused a
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Maintenance and Lubrication Lubrication Diagram ™ Lift-Tite Latches (Tower Pivot Points - 2) LO ™ Lift-Tite Latch Dampening Spring (2 springs - 4 Points) Parallel Arm LO Pivot Pin Bearings (16) Hydraulic Cylinder LO Pivot Bushings (8) LO Saddle Bearing DE Parallel Arm Pivot Pin Bearings (16) LO Handrail Pivot Pin Bearings (4) LO Inner Roll Stop Lever Bearings (2) Saddle Bearing and Slots (2) Buttons (2) LO DE Inner Roll Stop Upper Fold Arm Pivot Bearings (2) Cam Followers (4) LO LO
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Maintenance and Lubrication Schedule Proper maintenance is necessary to ensure safe, following the scheduled troublefree operation. Inspecting the lift for any wear, “4500 Cycles” mainte- WARNING nance. These intervals damage or other abnormal conditions should be a part of all transit agencies’s daily service program. Simple are a general guideline Maintenance and inspections can detect potential problems. for scheduling mainte- lubrication procedures nance procedures and must be per
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Maintenance and Lubrication Schedule Inspect lift for wear, damage or any abnormal Correct as needed. condition 750 Cycles Correct as needed. Inspect lift for rattles Perform all procedures listed in previous section also Upper/lower fold arms (2) Apply grease (synthetic) to contact areas between upper/lower fold arms. See Lubrication Diagram Platform pivot pin bearings (4) Apply Light Oil - See Lubrication Diagram Lower fold arm bearings (8) Apply Light Oil - See Lubrication Diagram Inne
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Maintenance and Lubrication Schedule Inspect lower fold arm pins (2), axles (2) and Replace damaged parts and resecure as needed. bearings (8) for wear or damage and positive Apply Light Oil. securement Remove pump module cover and inspect: Resecure, replace or correct as needed. 1500 • Hydraulic hoses, fittings and connections for wear Cycles or leaks • Harness cables, wires, terminals and connections for securement or damage • Control board, circuit breaker, power switch and lights
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NOTES This page intentionally left blank. Page 16
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Lift Electrical Schematic LIFT BK(24 GA COPPER) SWITCH BOX BK/WH(24 GA SILVER) NOTE: ALL WIRES ARE 22 GA. J28 P28 PK BU(20) OR(18) UNLESS OTHERWISE NOTED. 1 1 RD(20) IB JUMPER 2 2 UP PK GN(20) J15 3 3 P32 P15 BK(18) DOWN THRESHOLD GN(18) SENSOR J32 IB OCCUPANCY FOLD MICROSWITCH PRESSURE C1 SWITCH NO WH(20) RD UNFOLD BK(20) P15 J15 BK RD(18) C OR BK/WH(24 GA SILVER) WH WH 2 2 BK(24 GA COPPER) NC GN GN L P26 1 1 J27 E G 1 2 3 1 2 3 BK / WH(20) 1 2 3 1 2 3 WH / BK(20) OUTER BARRIER P27 P26 RAISE
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+ - 1 2 B A T COM. COM. Lift Wiring Diagram 915-4534NA Platform Lights (Option) Note: All wires 22 GA. FS19 BK / WH(20) Pressure unless otherwise noted. WH / BK(20) Switch FS18 917-4535RNA-33 REAR PUMP LIFTS 8-COND WIRE CODE 2 1 917-4535FNA-33 FRONT PUMP LIFTS 2 1 P20 NO. COLOR NO. COLOR P20 8 7 65 1 RD / BK(20) 5 NOT USED 4 32 1 2 BU / BK(20) 6 NOT USED 3 WH / BK(20) 7 NOT USED J20 J20 4 GN / BK(20) 8 BK / WH(20) 6 54 P6 P13 2 1 P5 2 1 32 1 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 21 6-COND
