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Parts & Service: 020 8988 7400 / E-mail: Parts@clarkeinternational.com or Service@clarkeinternational.com

VOLTAGE REDUCTION DEVICE (VRD)

The VRD is a safety feature that It is also known as “Anti-shock”. It’s function is

to lower the open circuit voltage across the output terminals to a safe 12V

when the welder is not in use.

As soon as the welder is used (a load

of 200 ohms or less is detected), the

voltage will increase to the full output

to enable welding to commence.

The “VRD” will only turn the output of

the welder back to a reduced output

state of 12 volts once the electrode Is

removed from the work piece or if

the resistance across the output rises

above 200 ohms.

If you wish to turn off this feature, set the VRD option on the menu panel to OFF

by pressing the MENU control and turning the control knob. We recommend

that you leave it switched ON.