PT-36 Mechanized Plasmarc Cutting Torch Instruction Manual

section 3INstallation3.1 Connection of Torch To Plasma SystemRefer to system manual.DANGERElectric Shock Can Kill!• Disconnect primary power source before making any adjustments.• Disconnect primary source before doing maintenance on systemcomponents.• Do not touch front-end torch parts (nozzle, retaining cup, etc.) withoutturning primary power off.WARNINGRadiation hazard. Arc rays can injure eyes and burn skin.• Wear correct eye and body protection.• Wear dark safety glasses or goggles with side shields. Refer to following chart forrecommended lens shades for plasma cutting:Arc CurrentLens ShadeUp to 100 Amps Shade No. 8100-200 Amps shade No. 10 200-400 Amps Shade No. 12Over 400 Amps shade No. 14• Replace glasses/goggles when lenses are pitted or broken• Warn others in area not to look directly at the arc unless wearing appropriate safetyglasses.• Prepare cutting area to reduce reflection and transmission of ultraviolet light.• Install protective screens or curtains to reduce ultraviolet transmission.3.1.1 Connection to the Arc Starter BoxThe PT-36 has two water cooled power cables which must be connected to the negative output from the powersupply. The right handed 7/16-20 fitting is on the cable supplying coolant to the torch. The left handed 7/16-20fitting is on the cable returning coolant from the torch.The ring terminal is used to make the nozzle connection for pilot arc starting. The fast-on connection groundsthe braided shield on the pilot arc cable.Male fast-onconnectionBrass nutAn alternative braided shield connection is provided on thetorch. The female fast-on connection (normally in the arcstarter box) can instead be mated to a male fast-on connectiontaped to one of the power cables a few inches beforethe end of the torch sleeving. Push the sleeving and largebrass nut towards the head of the torch to reveal this connection.When this connection is made, the shield connectionis grounded through the large brass nut.Female fast-on connectionpower cables (2)143