Instruction Manual
Page 6
3.0 Electrical and Air Requirements
CHAPTER 3 ELECTRICAL AND AIR REQUIREMENTS
Warning! Only a qualified electrician may connect the electrical power.
Electrical Supply
Due to the number of different style outlets available, the cord will not be included. It is
recommended that your electrician install a cord and plug that is comparable to your style
power outlet. You may choose to have your power cord hard-wired into your Power Supply.
It is recommended that your electrician use a Junction Box with an ON/OFF switch with
short circuit protection as required by local electrical code to be suitable for the primary
disconnect. The Miller Weldmaster 112 Extreme requires one of the following power
supplies. Please reference the electrical schematic for which power supply your machine
requires.
•80 Amperes - Single phase - 230 Volts
•80 Amperes - 3 phases - 230 Volts
•60 Amperes - 3 phases - 400 Volts
Shop Air Supply
The Miller Weldmaster 112 Extreme includes an In-Shop Air Supply Valve that allows quick
connects and disconnects to your shop air supply. Due to the number of different style
airline connectors, a male quick-connect is not included. You will want to select a male
quick-connect with a ¼ inch NPT (National Pipe Thread) to match your female quick-connect.
The Miller Weldmaster 112 Extreme requires the following shop air requirements:
•Minimum of 12 cfm at 120 psi
•Not to exceed 340 liters/min at 8.2 Bar
•An in-line water and dirt separator
Safety notes
Do not adjust the material while the machine is moving. Keep hands, long hair, loose clothing,
and articles such as neckties away from the rollers have pinch points rollers to avoid
entanglement and entrapment that can trap body parts or clothing and cause serious injury.
Provide enough space around machine to ensure the safe and effective operation. The machine
must be motionless and moving parts blocked before any cleaning, oiling, adjusting, repairing
or maintaining work is done on any repairing or maintaining work is done on any part of the
machine. Always wear Personal protective equipment. (PPE) refers to protective clothing,
helmets, goggles, or other garment designed to protect the wearer’s body from injury.
