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Forum:

Mechanical Troubleshooting

Brand: Crown - Model: RR5020-45

Number of messages: 4

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vickbear
South Dakota, United States

We have a customer that is not getting any run time out of there batteries. We have check the batteries and charger(ok) I have a concern that the BDI is not set right and needs to be adjusted.

Posted 2 Feb 2011 04:19 AM

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Liftdoctor
Indiana, United States

Not sure what you mean when you say you have checked the battery and charger and they are OK.    I think the BDI setting is 1 to 9 in the features or performance menu.  5 is the factory setting.     When people say they are not getting any run time, it can mean a lot of things.   What is their expectation?   Six hours continuous until it goes into lift interupt is about the norm   I have had people tell me the battery is not holding up and find out the meter went down 3 bars in 2 hours which is normal.

I would try some of these things until you nail down the problem.
1.  Check all the cells with a hydrometer and battery fully charged.
2.  Check all the cell voltages.
3  Make sure every cell has water.   Single point watering systems can have a bad filler or injector and cause a problem
4.   Check the battery under a load, such as max lift at relief pressure.   I would be looking for about 33 volts charged and no less than 28 or 29 volts fully discharged.   There is no spec in a book of this .  It is just what I have found from experience.
5.  Check the brake air gap.   .010 to .040 is the spec ( off the top of my head).  Shoot for .015-.020.
6  Swap the battery with another truck.
7.  Have the operator use a different charger.
8   Have the customer put it on equalize charge every night for a week and keep the water up.    Have had this help run time many times.  Are they doing a weekly equalize charge or are the chargers set up to do this automatically every week?
9.   Make sure they are not short charging the battery.   Sometimes operators will charge at lunch, see a full charge, and have the meter drop real fast in the first 15 minutes.

As far as checking the batteries, I am not a battery tech, but I think you are looking for no more than 10 points (.010)  difference in specific gravity and no more than .05 volts difference in cell voltages.

Modified 2 Feb 2011 10:43 AM
by poster.

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vickbear
South Dakota, United States

Thanks! This is good info. I have a question how do you get in to the system to check where the BDI is set or to change the settings

Posted 3 Feb 2011 00:01 AM

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irrk1
Massachusetts, United States

go into the acess one modual and go to the feature section . scroll through the list till you get to the BDI make sure its set at 5 that factory setting to change it it the lower button and change the setting then hit the button again.. lower than five will deplette the battery further over 5 it will give the operator less time

Posted 5 May 2011 08:33 PM

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