3 — OPERATION
3-9
3. Plug the power cord into a grounded 120 VAC receptacle. Verify that the red
ON-CHARGING indicator LED lights up on the battery charger.
4. To determine the charge rate at any time during the charge cycle, observe the DC
ammeter (Figure 3-7). The ammeter needle moves to the right at the start of the
charge cycle. As the battery charge rises, the needle moves farther left.
Figure 3-7. Battery Charger
CAUTION
Always remember to unplug the battery charger power cord before moving the
boom lift. Failure to unplug the power cord will cause damage to the equipment.
5. Inspect the charge indicator LEDs near the end of the expected charge cycle. If
all indicator LEDs are off, the battery is fully charged. (The DC ammeter needle
should point to the left.)
NOTE: The yellow 80% CHARGE indicator lights up when the battery voltage is
nearing full charge. At full charge (3-1/2 hours after the 80% CHARGE
indicator lights up), the charger turns off.
If the battery voltage does not reach the 80% CHARGE level in 14 hours,
the charger turns off and the red CHECK BATTERY indicator LED
lights up. This prevents extended charging of a faulty battery.
6. Unplug the power cord from the 120 VAC receptacle and the charger receptacle.
Properly store the power cord for next use.
