Inspect consumables -24 – Hypertherm HT4400 HySpeed Plasma Arc Cutting System User 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
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