Nortec T-448AC, Operator And Maintenance Manual, Page: 19 / 57

Maintenance
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BATTERY MAINTENANCE
! WARNING !
 It is the responsibility of the owner of this vehicle to ensure that the service technicians are
properly trained, read and obey the safety rules and guidelines in this manual (ANSI B56).
 Maintenance operations must be made by properly trained service technicians only.
 Before any maintenance work, park the vehicle on a flat level surface, turn off all the
switches, set to neutral, remove the key, lift the wheels off the ground and secure with jack
stands of adequate capacity.
 Keep charger disconnected while doing any maintenance work.
 Always wear a face shield and scarf when working around batteries.
 Battery emits highly explosive gases; do not produce sparks to avoid battery explosion and
acid splashing. Battery acid causes severe damage to eyes or skin. Flush contaminated area
immediately with water.
 Use insulated tools to avoid sparks that can cause battery explosion and acid splashing.
 Use two counteracting tools, double-wrench technique, when disconnecting or tightening
battery posts.
 Before cleaning or replacing a battery, discharge the capacitor in the controller with a 10
ohms, 25 W resistor for a few seconds across B+ and B-, identify battery polarity and
disconnect battery leads.
 After cleaning, the power must not be reapplied until terminal areas are thoroughly dry.
BATTERY LEADS AND CONNECTORS
Check for loose connections, damaged cables, acid spill, loose terminal posts, quarterly.
BATTERY POST CORROSION
If corrosion is present on battery posts, remove the cable connectors, use a wire brush to remove
particles, and then clean them with a cloth that has been moistened with ammonia.
ELECTROLYTE LEVEL
Does not apply to sealed battery.
 Disconnect battery connectors on roll-out or lift-out installations.
 Make sure the battery roll-out tray is provided with stops before rolling out.
 Fill with distilled water.
 Daily charged batteries normally require watering once a week. Under watering leads to a
shortened battery life. Over watering leads to battery corrosion. Be careful not to overfill any cell to
avoid electrolyte to be forced out while charging.
 Fill each cell to plate level with distillated or de-ionized water, before battery charging. When the
battery is charged, the fluid expands and can seep out if overfilled. Refill each cell after full charge,
when the fluid has expanded to its maximum level.
 Reinstall battery caps before charging.