MODERN BURNER UNIT (MBU)
OPERATION UNDER USUAL CONDITIONS
Two Person Lift
The Battery Pack weighs approximately 80 pounds (36.3 kg). Two persons must carry the
Battery Pack, lifting with legs, not back, to prevent injury.
BATTERY PACK OPERATING PROCEDURES.
The battery pack is issued only with the KCLFF and KCLFF-E field feeding systems. When used by
itself, it allows operation of MBUs in forward locations as described below. Whenever possible, a
vehicle equipped with a NATO connector, should be made available should the battery pack require
recharging. Recharging is desirable when the Charging Status indicator reads 40-60% or below.
The battery pack contains two sealed lead acid batteries and an internal charger. When fully charged, it
provides the electrical storage to start and operate 3 MBUs simultaneously for 3 hours at an ambient of
600F (15.50C), and a period of 2 hours at an ambient of -250F (-320C). The batteries are rechargeable
through the standard NATO vehicle power connector in 3 hours in temperatures between 600F
(15.50C), and 1200F (490C), and in five hours at -250F (-320C). The charger has circuitry that prevents
overcharge. A 3-Position Function Switch controls the voltage being supplied to the output connector.
The status of the batteries is indicated by the Battery Status lights. The percentage displayed indicates
the amount of charge remaining. To use the battery pack proceed as follows:
Flip the 3-Position Function Switch to the OFF position. Connect the main connector of the branch cable
to the POWER OUTPUT connector.
Connect the individual branches of the cable to the MBU power-in receptacle.
Flip the 3-Position Function Switch to the ON position.
To re-charge the battery pack proceed as follows:
Turn the 3-Position Function Switch to the RUN position and note the battery status.
If the status shows 40-60% or CHARGING REQUIRED, proceed with charging.
Using the NATO Adapter Cable, connect the battery pack POWER INPUT connector to a vehicle.
Start the vehicle engine.
Turn 3-Position Function Switch to the CHARGE position (The Charging Status indicator light labeled
CHARGING will illuminate (yellow) to indicate that the batteries are charging.
The CHARGING STATUS indicator light READY will illuminate (green) to indicate when the batteries are
When charging is complete, return the 3-Position Function Switch to the OFF position.