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Battery Controller / Hourmeter / Lift Interrupt
PS
S5.3
5230
F-code
Section
C-code
Version no
T-code
001
© BT Products
153
Service Manual
1997-04-15
3.4. Hourmeter
Hourmeter operation is indicated by flashing of the hourglass
icon on face of LCD. The flash rate is 15 times a minute with
a duty cycle of 3 seconds on and 1 second off. When
hourmeter is not in operation the icon is visible but does not
flash.
4. Troubleshooting
This section is separated into two parts: Battery Discharge
Indicator and Hourmeter.
4.1. Battery Discharge Indicator (BDI)
4.1.1. No Reset
There are two ways to reset the instrument.
Using the open circuit reset the instrument must first have a
break in the power and then measure a voltage greater than
2.09 volts per cell across its pin 7 or 8 and pin 5. Verify that a
leakage voltage is not present across these terminals by
disconnecting one of the lines supplying battery voltage to the
instrument. Replace this connection and measure the voltage
across the gauge at its pin 7 or 8 and pin 5. It must be above
2.09 volts per cell. If it is, and the gauge does not reset to
indicate full charge, the instrument is defective.
The second method of resetting the instrument is by using the
high voltage reset. This reset function also has two
requirements to reset the instrument. The voltage across pin
7 or 8 and pin 5 must be above 2.35 volts per cell and must
remain above this level for six minutes continuously. Measure
the voltage across these pins and verify that it is greater than
2.35 volts per cell. Also, verify that it remains above this level
for a minimum of six minutes. If these two conditions are met,
and the instrument does not reset, it is defective.
4.1.2. Reset After Break in Power
If the voltage of the batteries to which the instrument is
connected is below 2.09 volts per cell, and the gauge was not
formerly indicating full, it should not reset to full after a break
in power. If it does its memory cell is depleted. This will not
affect the discharge function of the instrument if it is always
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