SAFETY PRECAUTIONS
BEFORE OPERATION
See that the ground terminal lug is connected through the input cable or by separate conductor
to the power system ground. An ungrounded machine can cause death by electrocution to personnel
coming in contact with it.
Do not reposition the voltage bars while power source is connected to the machine. To do so could
cause a serious electrical shock and possible death.
DURING OPERATION
Do not make or break any connections or perform any maintenance while the welding machine is
in operation. The high voltage created by this math ine can cause death by electrocution.
Do not come in contact with the electrode while the machine is in operation. The high voltage gen-
erated by the machine can cause death by electrocution.
Be very careful when the unit or surrounding area is wet or damp. Coming in contact with a wet
or damp unit can cause a serious electrical shock and possible death.
When malfunction of the selenium occurs, thoroughly ventilate the area to prevent inhalation of
poisonous fumes. Do not handle the damaged rectifier while it is warm so as not to absorb poisonous
selenium oxide compound through the skin. Failure to observe this warning can result in serious in-
jury or possible death.
AFTER OPERATION
When making a test on the high-frequency transformer, make sure that the transformer is on an
insulated bench. Do not touch an activated transformer or the wires leading from it. To do so may
cause a serious electrical shock or possible death to personnel performing the test.
Short the capacitor connections to ground before removal. Failure to do this may result in a seri-
ous electrical shock.
