nifty Heightrider HR21 Operating/Safety Instructions Manual page 37

Notes:
1) If the charger is reconnected to the power supply shortly after it has gone through its full
charging cycle, the charger will show an Amber light, immediately followed by the Green 80%
lamp. The charger would then go through its complete cycle again at an accelerated rate,
depending on the time difference between connection, reconnection and level of battery charge.
2) Some machines are fitted with a Battery Management System, which permanently monitors the
condition of the batteries. When the batteries become discharged to 20% of their capacity the
management system will begin to "shut down" the hydraulic power packs. This causes the
drive/boom operating system to alternately stop and start, signalling to the operator that re-
charging is necessary. However, there is sufficient power remaining to enable the operator to
drive slowly to the nearest charging point.
3) During normal machine usage with the engine running, the batteries are on continuous recharge,
except when the control system decides that additional electric power is required in order to
maintain drive/function speed.
Should the operator ignore the onset of the battery discharge warning the "shut down" of the motors
will continue, until the machine is rendered in-operative. Immediate charging will then be required.
CHARGING LIMITATIONS
Digital Charger: - The capacity of the 110V supply must be capable of 2kW (16A current); hence a
small hand-tool transformer must not be used with the battery charger.
Digital Charger Fault Conditions
Red LED status
Attention should also be given to the use of extension cables as power leads. Excessive cable lengths
from the supply point to the battery charger will result in significant voltage drop, leading to a reduction
in the chargers efficiency. In addition, inadequate sized cable cores will have a limiting effect on its
current carrying capacity, which will again lead to a reduction in the chargers efficiency. Both of these
can result in over-heating of the cable with an increased risk of fire, short circuits or damage to the
components themselves.
English/USA – 11/09
Original Instructions
Constant ON Defective battery pack or cell
Single flash Output open circuit or short circuit, or output terminals are reversed.
Battery voltage is too high (Possibly incorrect voltage battery)
Double flash 22 Hour timer has deactivated charger due to a battery problem
Operating & Safety Instructions
Description
HR Series
35