Johnson Controls 300 Series Manual page 97

Table 32: LED Summary
Indication
Circuit Test when Power is First Applied (This repeats
when battery is connected first.)
Charger Defective
Charger Operational
Charger Voltage Excessive
No Battery Connect or Shorted Battery
Battery Test in Progress
Defective Battery
Test Complete, Battery and Charger Operational
Network Control Module 300 Series Technical Bulletin
Follow these steps to perform a test of the charger and battery:
1. Open the battery case and disconnect the battery from the charger.
2. Connect the tester to the battery charger cable.
- If charger voltage is above 6.0 VDC, the charger is working
properly and the green LED illuminates.
- If charger voltage is above 8.0 VDC, the charger is producing
excessive voltage and the yellow LED flashes.
3. Connect the tester to the battery.
4. Wait 30 seconds for the tester to sense the battery voltage.
5. Stop the battery test if the battery has less than 5.5 VDC, and the
red LED illuminates.
6. Begin the battery load test if the battery voltage is above 5.5 VDC.
The yellow LED illuminates when the test is in progress.
7. Wait 30 minutes with the load connected to the battery while
continuing to monitor the battery voltage. If the battery voltage
ever drops below 5.5 VDC, the red LED flashes and you should
stop the test. If after 30 minutes the battery is still above 5.5 VDC,
the green LED flashes, which means the battery is good.
!
CAUTION:
Avoid contact with the outer surface of the battery tester. The battery tester
becomes hot to the touch during testing and could cause a burn upon
contact.
The green, yellow, and red LEDs on the battery tester show the status
of the test the charger is performing. Table 32 summarizes the
different LED color combinations and what each combination
indicates regarding the test.
Risk of Personal Injury.
Green LED
On
Off
On
On
On
On
On
Flashing
Yellow LED Red LED
On On
Off Off
Off Off
Flashing Off
Off On
On Off
Off Flashing
Off Off
97