Braun NUVL855R service manual Troubleshooting Diagnosis Chart, Function Possible Cause Remedy

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Troubleshooting Diagnosis Chart

WARNING

Troubleshooting and repair procedures must be performed DVVSHFLÀHGE\DX- thorized service per- sonnel only. Failure to do so may result in serious bodily injury and/or property damage.

If a problem occurs with your lift, discontinue operation imme- GLDWHO\'RQRW attempt repairs yourself. Contact your dealer or call The Braun Corporation at 7+(/,)7®. One of our national Product Support repre- sentatives will direct you to an authorized service repairman who will inspect your lift.

The cause of the problem can be determined by locating the lift function and related symptom in the Troubleshooting Diagnosis &KDUWV7KHVSHFLÀFFDXVHDQG

remedy can then be determined by process of elimination. A Wir- ing Diagram, Electrical Sche- matic, Hydraulic Diagram and Hydraulic Schematic are provided to aid in troubleshooting.

A Repair Parts section with ex- ploded views and corresponding parts lists is also provided. Cor- rect the problem if possible. If the problem continues, contact The Braun Corporation.

FUNCTION

POSSIBLE CAUSE

REMEDY

 

1.11

Low battery

Check vehicle battery

 

1.12 Bad ground

Check for good ground between vehicle chassis

 

 

 

and 3/8” bolt on back of power pack.

1.00

1.13

Poor plug connections

Check all plugs for proper contact.

 

 

 

NO

1.14

Blown fuse

Check fuses. Check for power on terminal 9 of

OPERATION

 

 

terminal block on P.C. board.

 

 

 

 

1.15

Bad circuit breaker

Check 20 amp self reset circuit breaker. Check

 

 

 

25 amp fuse from circuit breaker to P.C. board.

 

1.16

Defective Interlock

Check for voltage on red wire with gray stripes in

 

 

 

interlock plug connected to P.C. board.

 

 

 

 

 

 

 

 

 

2.11

Hydraulic valve open

)OXVKYDOYHE\RSHUDWLQJPDQXDORYHUULGHVZLWFKHV

2.00

 

 

up and down at same time for 4 to 5 seconds

 

 

several times.

Pump Runs

 

 

 

 

 

But Will Not

2.12

Pump mounted horizontal

Power pack must be mounted vertically.

Lift Platform

 

 

 

 

2.13

No oil (low)

&KHFNÁXLGOHYHO

 

 

 

 

 

 

 

 

3.00

3.11

Up Solenoid

Check for power on pump “T” wire going to solenoid.

PUMP

 

 

 

DOES NOT

3.12 Bad power and ground

See 1.00

RUN WITH

 

 

 

MANUAL

 

 

 

OVERRIDE

 

 

 

OR REMOTE

 

 

 

 

 

 

 

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Contents Series Congratulations Warranty and Registration InstructionsContents Lift Terminology Lift HousingSwitch and Sensor Locations EHORZÁRRUOHYHO Certification Checklist Diagnostic Procedures$GMXVWPHQW3URFHGXUHV Adjustments and CalibrationTerminal Strip and Door Operators Floor Level and Inner Roll Stop AdjustmentsInner Roll Stop Adjustment UROOVWRSUHVWVRQWKHÁRRU QRWDG- just the in- ner roll stop Inner Roll Stop Occupied Sensor Adjustment Lubrication Diagram When servicing the lift at the recommended intervals Maintenance and Lubrication Schedule1500 4500 Cycles Function Possible Cause Remedy Troubleshooting Diagnosis ChartLift will GO UP with Switches Contact Removal Board Wiring SchematicQty Description Hydraulic Parts ListHydraulic Diagram Qty Description Pump Module Parts ListPump Module Diagram Complete Lift Exploded View Unfold ModuleforQty Description Repair Parts ListLift Housing Detail Exploded View Lift Carriage Detail Exploded View Lift Platform Detail Exploded View Providing Access to the World CJKA-**G