Braun NUVL603C service manual Troubleshooting Diagnosis Chart, Function Possible Cause Remedy

Models: NUVL603C

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Troubleshooting Diagnosis Chart

WARNING

Troubleshooting and repair procedures must be performed as specified by au- 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- diately! Do not attempt repairs yourself. Contact your dealer or call The Braun Corporation. One of our national service 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

Charts. The specific cause and 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.

 

1.13

Poor plug connections

Check all plugs for proper contact.

1.00

 

 

 

NO

1.14

Blown fuse

Check fuses on P.C. board.

OPERATION

 

 

 

 

1.15

Circuit Sentry

Manually reset Circuit Sentry (circuit breaker).

 

1.16

Circuit Breaker

Circuit breaker should automatically reset, other-

 

 

 

wise replace.

 

1.17

Defective Interlock

Check for voltage on gray wire with pink stripes in

 

 

 

interlock plug connected to P.C. board.

 

 

 

 

 

 

 

 

 

2.11

Hydraulic valve open

Flush valve by operating manual override switches

 

 

 

up and down at same time for 4 to 5 seconds

 

 

 

several times.

2.00

2.12

Pump mounted horizontal

Power pack must be mounted vertically.

PUMP RUNS

 

 

 

BUT WILL

2.13

No oil (low)

Use Braun 87010R (5606 aviation fluid). Do

NOT LIFT

 

 

not mix with Dextron III or other hydraulic fluids.

PLATFORM

 

 

 

 

Check fluid level with platform lowered fully.

 

 

 

 

 

 

Fill to maximum fluid level indicated on reservoir

 

 

 

(specified on decal). Do not overfill. If fluid level

 

 

 

decal is not present - measure 7/8" from the bot-

 

 

 

tom of fill tube to locate fluid level.

 

 

 

 

 

 

 

 

3.00

3.11

Up Solenoid

Check for power on black wire going from solenoid

PUMP DOES

 

 

to motor.

NOT RUN

 

 

 

 

 

WITH MAN-

3.12 Bad power and ground

See 1.00

UAL OVER-

 

 

 

RIDE OR

 

 

 

HAND-HELD

 

 

 

PENDANT

 

 

 

 

 

 

 

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Braun NUVL603C service manual Troubleshooting Diagnosis Chart, Function Possible Cause Remedy