Hypertherm HT4400 HySpeed Plasma Arc Cutting System - Manual (Page 84)

All Surfaces Dirt or debris None Clean
Erosion, missing material None Replace torch
Cracks None Replace torch
Internal burn or arcing marks None Replace torch
Current Ring 1. Dirt or debris None Clean
2. Pitted or missing material None Replace torch
Threads Wear or damage None Replace torch
Bullet Connectors Damage None Replace torch
O-rings 1. Damage None Replace O-ring
2. Lubricant Not dry Apply a thin coat of
silicon lubricant
External O-rings 1. Damage None Replace O-ring
2. Lubricant Not dry Apply a thin coat of
silicon lubricant
Water Tube* 1. Tightness Not loose Tighten or replace
tube*
2. Pitted or missing material None Replace tube*
*NOTE: See Replace Torch Water Tube later in this section.
OPERATION
HT4400 Instruction Manual 4-25
7
Inspect Check For Limit Action
Inspect Torch
Water
Tube
Current
Ring
Coolant
Bullet Connector
Gas Bullet
Connector
Pilot Arc
Bullet Connector