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DISCUSSION FORUMS : Forkliftaction.communicate
Forum: Mechanical Troubleshooting
Brand: Crown - Model: 40FCTT-188
Number of messages: 4

START MESSAGE:
squidman
Rhode Island, United States

after charging overnight display reads full 100% after a couple of hours the display is blinking but the battery reads 36.8 on a  meter would the display send a signal to the controller to lock out the lift thanks for your help,  mike

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Posted 29 Nov 2009 02:30 AM Reply  Report this message
REPLIES: Sort replies by
edward_t
South Carolina, United States


What is the voltage, at rest, 5 minutes of operation after you take it off an overnight charge? What is the voltage when you stall the hydraulics?
Fill the battery with water, and confirm (not just run the automagic filler, but look in each cell) charge battery 8 hours and allow to cool 8 hours.
What is the voltage at rest, and then what is the voltage when the hydraulics are stalled all the way up.
Your battery meter readings and lift cutout are common symptoms of a battery with a few dry cells, maybe from an automagic watering system that is stuck and not allowing water into some cells, (or 1 cell), or has some other battery problem.
the next test if these do not show anything would be taking a specific gravity reading on each cell with the battery pretty much fully charged.
Your battery may read a full charge, and then go down that quickly, if it was only getting a 1 hour charge. We call that a "surface charge", so you may want to confirm that the charger really is running 8 hours a night, and not getting shut down when the last person leaves in the evening.

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webhome = http://forktechs.com
"it's not rocket surgery"


Modified 30 Nov 2009 01:00 AM
by poster.
Reply  Report this message
manny
California, United States
ive had batterys read voltage but underload they dropp over 5 volts due to bad cells in batts


meter the batt w/ a fluke   while lifting and traveling tocheck voltage drop  more than 3  might be a bad batt

Posted 22 Dec 2009 11:10 AM Reply  Report this message
edward_t
South Carolina, United States

I don't suggest trying to check the battery while traveling, that has a tendency to have someone look away from the direction of travel, just long enough to eventually cause a real serious problem, and lifting to a "stall" puts more of a load on the battery than traveling.
I also use a 10% rule as to voltage drop, which, as we see more and more higher voltage batteries in the USA, will make a difference in the troubleshooting. if it drops 10% from the "at rest" voltage, then fixing the battery problem is the needed first step.

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webhome = http://forktechs.com
"it's not rocket surgery"


Posted 23 Dec 2009 00:26 AM Reply  Report this message


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