INSTALLATION
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SAFETY PRECAUTIONS
Read this entire installation section before you start installation.
WARNING
ELECTRIC SHOCK can kill.
•Only qualified personnel should per- form this installation.
•Turn the input power OFF at the dis- connect switch or fuse box before working on this equipment. Turn off the input power to any other equip- ment connected to the welding system at the discon- nect switch or fuse box before working on the equip- ment.
•Do not touch electrically hot parts.
•Always connect the Power Wave grounding lug (located inside the reconnect input access door) to a proper safety (Earth) ground.
CAUTION
DO NOT MOUNT OVER COMBUSTIBLE SURFACES.
Where there is a combustible surface directly under stationary or fixed electrical equipment, that surface shall be covered with a steel plate at least .06”(1.6mm) thick, which shall extend not less than 5.90”(150mm) beyond the equipment on all sides.
LIFTING
Lift the machine by the lift bail only. The lift bail is designed to lift the power source only. Do not attempt to lift the Power Wave with accessories attached to it.
STACKING
Power Wave machines can be stacked a maximum of three high.
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SELECT SUITABLE LOCATION
Do not use Power Waves in outdoor environments. The Power Wave power source should not be subjected to falling water, nor should any parts of it be submerged in water. Doing so may cause improper operation as well as pose a safety hazard. The best practice is to keep the machine in a dry, sheltered area.
Place the welder where clean cooling air can freely cir- culate in through the rear louvers and out through the case sides and bottom. Dirt, dust, or any foreign mate- rial that can be drawn into the welder should be kept at a minimum. Do not use air filters on the air intake, because the air flow will be restricted. Failure to observe these precautions can result in excessive operating temperatures and nuisance shutdowns.
Machines above code 10500 are equipped with F.A.N. (fan as needed) circuitry. The fan runs whenever the output is enabled, whether under loaded or open circuit conditions. The fan also runs for a period of time (approximately 5 minutes) after the output is disabled, to ensure all components are properly cooled.
If desired, the F.A.N. feature can be disabled (causing the fan to run whenever the power source is on). To dis- able F.A.N., connect leads 444 and X3A together at the output of the solid state fan control relay, located on the back of the Control PC board enclosure. (See the Wiring Diagram.)
CAUTION
The bottom machine must always be placed on a firm, secure, level surface. There is a danger of machines toppling over if this precaution is not taken.
MACHINE GROUNDING
The frame of the welder must be grounded. A ground
terminal marked with the symbol 
is located inside the reconnect/input access door for this purpose. See your local and national electrical codes for proper grounding methods.
HIGH FREQUENCY PROTECTION
Locate the Power Wave away from radio controlled machinery.
CAUTION
The normal operation of the Power Wave may adverse- ly affect the operation of RF controlled equipment, which may result in bodily injury or damage to the equipment.
POWER WAVE 455/R
