Hypertherm HD4070 Rev.8 - Manual (Page 141)

All Surfaces Dirt or debris Clean surfaces
Erosion, missing material Replace torch
Cracks Replace torch
Internal burn or arcing marks Replace torch
Current Ring 1. Dirt or debris Clean
2. Pitted or missing material Replace torch
Threads Wear or damage Replace torch
Bullet Connectors Damage Replace torch
O-rings 1. Damage Replace O-ring
2. Lubricant Apply a thin film of silicone lubricant if dry
External O-rings 1. Damage Replace O-ring
2. Lubricant Apply a thin film of silicone lubricant if dry
Water Tube* 1. Tightness Tighten or replace tube*
2. Pitted or missing material Replace tube*
*Note: See Replace Torch Water Tube later in this section.
OPERATION
6
HD4070 Instruction Manual 4-31
Inspect Check For Action
Inspect Torch Plasma gas
bullet
connector
Plasma vent
bullet
connector
Coolant in
bullet
connector
Pilot arc
bullet connector
Shield gas
bullet
connector
Water
Tube
Current
Ring
Coolant return
bullet
connector