Battery Maintenance
Section 1 - General Information
Service Manual
Page 1-15
B
A T T E R Y
C
H A R G E R
T
R O U B L E S H O O T I N G
C A U T I O N
Ensure that battery chargers with voltage selector switches are set on the correct AC line voltage before
placing chargers in service to avoid charger failure.
Connect battery leads in correct polarity to avoid charger damage.
W A R N I N G
!
!
Remove all power before working on electrical parts to avoid shock.
Shock hazard can exist if AC plugs are wired incorrectly.
The battery charger troubleshooting procedure is outlined in Table 1-7. The table shows various condi-
tions for each charger type with the problem to be investigated. Follow the table from the top down when
troubleshooting. If the problem is not resolved after going through the entire table, the charger should be
replaced.
NOTE:
The majority of chargers returned to UpRight as “failed” test good. Please follow the troubleshooting
procedures carefully.
Table 1-7:
Battery Charger Troubleshooting
Problem
068574-000
(115V)
069112-000
(110/230V)
063944-001
(115V)
063948-003
(110/230V)
069199-000 & 069199-001
(115/230V auto)
Solution
Battery voltage is below 18
Volts (too low to allow the
charger to turn on).
• Ammeter does not move.
• No hum from charger.
• No green Light.
• No hum from charger.
• Not Applicable.
• Charger turns on even with very
low battery voltage.
Charge batteries to at least 24 Volts with an external
charger, then disconnect the external charger and plug
in the internal charger.
The charger has been
plugged into an AC outlet
with different voltage than
the AC switch setting on the
charger.
• Ammeter does not move.
• No hum from charger.
• No green Light.
• No hum from charger.
• Not Applicable.
• Charger automatically adjusts to
the incoming AC current.
063944-001 ONLY
• Check the fuse inside the switch box - replace if bad.
• If the fuse is good, the charger has failed.
All Others
• Check the AC main circuit breaker and reset if
necessary.
• Set the voltage selector switch to the proper voltage.
Fuse visible on front of
charger has failed.
• Ammeter does not move.
• No hum from charger.
• Not Applicable.
• Not Applicable.
Check for DC output short circuit and replace the fuse.
AC power problem.
• Ammeter does not move.
• No hum from charger.
• No green Light.
• No hum from charger.
• No Lights ON.
• No Lights blinking.
• AC outlet is bad.
• Extension cord is bad
• Plug is bad or wired wrong.
• AC wire is broken.
Check and repair as necessary.
DC connection to batteries. • Ammeter does not move.
• No hum from charger.
• No green Light.
• No hum from charger.
• All three Lights blink once.
Connection to battery;
• missing.
• corroded.
• wrong polarity.
• DC wire broken.
Check and repair as necessary, and check Fuse.
One or more batteries is
bad.
• Ammeter never shuts off,
even after 14 hours of
charging.
• Green Light ON but never
starts blinking, even after
14 hours of charging.
• Lights one and two are ON or
blinking, but all three Lights ON
never occurs, even after
14 hours of charging.
• Check water level.
• Check for shorted cells.
• Replace bad batteries.
AC input voltage too high.
• Not Applicable.
• Not Applicable.
• All three Lights blink two times.
Check and correct AC source.
Overheated charger.
• Not Applicable.
• Not Applicable.
• All three Lights blink three times. Move the machine to a cooler area. Allow the machine
to cool before connecting to AC source.
High current in DC charging
output.
• Not Applicable.
• Not Applicable.
• All three Lights blink four times.
• Check for shorted DC output wires.
• Check for bad batteries.