Mec 3072ES, Service And Parts Manual

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October 2008 "3072ES / 3772ES / 3772ES HD" Service & Parts Manual
Page 2-8
Battery Charger Maintenance
SHOCK HAZARD - MAY CAUSE SERIOUS INJURY OR DEATH.
DISCONNECT FROM AC VOLTAGE BEFORE DOING ANY SERVICE.
DO NOT TOUCH UN-INSULATED PARTS OF CHARGER WIRES, BATTERY
CONNECTOR OR BATTERY TERMINALS.
BE CAREFUL WITH TOOLS AROUND ELECTRICAL PARTS TO AVOID ARCING OR
SHORTING.
REMOVE RINGS, WATCHES, AND JEWELRY TO AVOID ARCING AND SHOCK.
Proper charger and battery maintenance will ensure safe and efficient charging and longer battery life.
Most battery charging problems relate to battery care and not charger problems.
1. Keep electrical connections clean and tight. Loose or corroded wires and fittings will cause an
output error.
2. Keep the charger fins clean to improve cooling. If fins are covered with debris the charger’s
over-temperature protection system may reduce charging power.
3. Replace the charger if case damage breaks the watertight seal.
4. Inspect wiring weekly for pinching, cut or damaged insulation, or other damage.
AC Ground – green with yellow stripe
AC Neutral – light blue
AC Line (Hot) – brown
DC Battery Negative (–) – black
DC Battery Positive (+) – red
Interlock Wires – black and white (prevents machine operation while charging)
IMPORTANT: All MEC electric scissor lifts are equipped with lead acid type flooded
batteries. The yellow wire loop on the back of the charger must be
intact. If it is cut, broken, or damaged, the charger may go into GEL
charging mode, causing damage to the machine and/or batteries.