Schumacher PI-140 User Manual

Page 4

when you first plug the inverter in, it is a sign that there

is a short circuit within the power supply. Remove the

12-volt plug from the 12-volt accessory outlet. Firmly

reinsert the plug. If this does not remedy the problem,

try using a different 12-volt accessory power outlet.

NOTE: A ‘’buzzing’’ sound emitted from inexpensive

sound systems is the result of ineffective filters in the

sound system. This can be resolved by purchasing a

sound system with a higher quality power supply or

higher quality filter.

POWER SOURCE

Your average automobile or marine battery at full charge

will provide an ample power supply to the inverter for ap-

proximately hours when the engine is off. The actual length

of time the inverter will function depends on the age and

condition of the battery and the power demand being placed

by the device being operated with the inverter.

Turn OFF the device plugged into the inverter before starting

the engine. To maintain battery power, run the engine every

2 to hours for approximately 10 minutes to recharge the

battery. While the PI-140 draws very low amperage when not

in use, it should be unplugged to avoid battery drain.