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Document No: 4020-M010 1st February, 1997 Issue 2.0
9.1 SETTING BATTERY CHARGER OUTPUT VOLTAGE:
To set the battery charger output voltage to the correct level and set the thresholds for
battery charger high and low fault conditions, use the following procedure:(Figure 1.4
shows the location of adjustment points).
STEP 1 Ensure the batteries are disconnected.
STEP 2 Adjust potentiometer RV2 to set the voltage across the battery charger
terminals to 27.6V DC
STEP 3 Locate potentiometer RV1 on the main PCB and press the CPU RESET
switch located on the main PCB to clear the current BATtery fault
condition due to battery removal.
STEP 4 Turn RV1 anti-clockwise until a BATtery HI condition is indicated on the
display. If the battery fault condition is brought up before completing this
step, press the CPU RESET switch and continue the adjustment.
STEP 5 Press the CPU RESET switch .Then adjusting RV1 clockwise ,count the
number of turns until a BATtery LO condition is indicated on the display.
NOTE: If the battery fault condition is brought up before completing
this step, press the CPU RESET switch and continue the
adjustment.
STEP 6 Then turn RV1 anti-clockwise by half the number of turns obtained in step
5. The display should now indicate BATtery OK condition.
NOTE: If the battery fault condition is brought up before completing
this step, press the CPU RESET switch and continue the
adjustment.
STEP 7 Re-connect the batteries and press the CPU RESET switch to reset the
system.
CAUTION - POWERING REQUIREMENT
When removing power from the panel, disconnect batteries FIRST
and AC power last. When connecting power to the system, connect
AC power FIRST and batteries last.
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