Hypertherm HT4400 HySpeed Plasma Arc Cutting System - Manual (Page 83)

OPERATION
4-24 HT4400 Instruction Manual
2
Inspect Consumables
Part Check For Limit Action
Cap
Nozzle
Swirl Ring
Electrode
Center surface Wear
O-rings 1. Damage None Replace electrode*
2. Lubricant Not dry Apply a thin coat of
silicon lubricant
*NOTE: Always replace the nozzle and electrode as a set.
Damage None Replace swirl ring
Dirt or debris Clean and no damage Replace swirl ring
Gas holes Blocked holes None Replace swirl ring
O-rings 1. Damage None Replace swirl ring
2. Lubricant Not dry Apply a thin coat of
silicon lubricant
Center hole 1. Round Hole must be round Replace nozzle*
2. Signs of arcing None Replace nozzle*
O-rings 1. Damage None Replace nozzle*
2. Lubricant Not dry Apply a thin coat of
silicon lubricant
Wear or missing material None Replace nozzle*
Blocked gas holes None Replace nozzle*
Erosion, missing material None Replace cap
Cracks None Replace cap
Burned None Replace cap
See Inspect Electrode Pit Depth later
in this section