Schumacher PI-400 Welding System User Manual


 
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Number 273-105. Try grounding the inverter with an 18
AWG (minimum) wire, using as short a length as possible.
Attention: You may hear a "buzzing" sound being emit-
ted from inexpensive sound systems when operated with
the inverter. This is due to ineffective filters in the sound
system. Unfortunately, this problem can only be resolved
by purchasing a sound system with a higher quality
power supply.
If the Inverter Fuse Blows?
Your PI-400 power inverter is fitted with 25-amp spade
type fuses, which should not have to be replaced under
normal operating circumstances. A blown fuse is usually
caused by reverse polarity or a short circuit within the
appliance or equipment being operated.
If the fuse does blow:
1. Disconnect the appliance or equipment immediately.
2. Find the source of the problem, and repair it.
3. Install the new fuse (supplied with your power inverter.)
Attention: Do not install a fuse higher than 25-amps, as
this may damage the inverter. Make sure to correct the
cause of the blown fuse before using the PI-400 again.