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SAFETY PRECAUTIONS
WARNING
ELECTRIC SHOCK can kill.
•Only qualified personnel should perform this installation.
•Turn the input power OFF at the circuit breaker or fuse box before working on this equipment.
•Do not touch electrically hot parts.
•Always connect the Demo Zone to a power supply grounded per the National Electrical Code and any local codes.
•This demonstration rack is intended for indoor use and display only.
•Shelter or protect from rain, moisture and condensation.
•Do not operate electric equipment when wet.
CYLINDERS could explode if damaged.
• Keep cylinders upright and 
secured to a support.
•Keep cylinders away from areas where they could be damaged.
•Never allow the electrodes or torches to touch the cylinders.
•Keep cylinders away from live electrical circuits.
•Maximum inlet pressures must be observed.
FALLING EQUIPMENT can cause injury.
•Do not lift with gas cylinder in place.
•Do not trailer or transport over the road
ENGINE EXHAUST can kill.
• Use in open, well ventilated areas or vent exhaust outside
INPUT AND GROUNDING CONNECTIONS
INPUT POWER
The Demo Zone is designed to operate from 230 volt, 60 Hz
A
The lighting system requires 120 volt 60 Hz power. Plug the line cord into a conventional 120 volt recepta- cle for lighting operation. The lighting system is for display and convenience purposes.
The Input Plugs for the Demo Zone are connected at the factory.
GROUNDING
CAUTION
When the Demo Zone is connected to a conventional power distribution system, the frame of the Demo Zone must be grounded. The input cable provided with the Demo Zone contains a grounding conductor. Additionally, another ground lead must be connected. Connect the frame of the Demo Zone to a good elec- trical ground using the #1 AWG lead included with the Demo Zone. The purpose of this additional ground is to minimize disturbance of the high frequency unit and to provide a path for stray welding currents.
Some applications may not use conventional input power and instead utilize the generating capability of the Ranger 250 for power. In this case, the ground lead is required only if the high frequency unit of the Square Wave TIG 175 is used.
OUTPUT CABLES AND
CONNECTIONS
ELECTRODE AND WORK CABLE CON- NECTIONS
The Demo Zone is supplied with the output cables connected at the power sources for positive electrode polarity. To change the polarity of a power source, switch the cables at the output terminals of the power source, or change the power source polarity switch as applicable.
A bolted work lead runs from the work buss connec- tion of the Demo Zone to the work table. The work table connection must be firm and secure.
DEMO ZONE