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Coolant maintenance
If the Computer Numerical Control (CNC) alerts you that the coolant level is low, remove the power from the cutting system and refill the coolant reservoir immediately.
Calculations for total coolant volume estimates
Use these calculations to get an estimate for the total coolant volume necessary for your plasma cutting system.

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Maintenance
- Plasma system maintenance
  Hypertherm® cutting systems can operate in harsh conditions for many years. To maintain cutting system performance, minimize operating costs, and lengthen cutting system life, it is important to follow all maintenance procedures and schedules.
- Daily inspections
  Always do these tasks at least once daily, before system operation.
- Indicators of emitter wear
  Emitter wear can be described by the width, depth, and appearance of the electrode pit.
- Measure the pit depth of an electrode
  The pit depth of an electrode refers to the depth of the wear on the hafnium emitter found in the center of the electrode
- Coolant maintenance
  If the Computer Numerical Control (CNC) alerts you that the coolant level is low, remove the power from the cutting system and refill the coolant reservoir immediately.
  - Calculations for total coolant volume estimates
    Use these calculations to get an estimate for the total coolant volume necessary for your plasma cutting system.
  - Coolant replacement and its significance
    Hypertherm® recommends that you replace all of the coolant at least once every 6 months, as part of routine preventive maintenance. More frequent replacement can be necessary because of environmental conditions including but not limited to contaminants in your coolant or diagnostic codes that indicate coolant problems.
Diagnostics and Troubleshooting
Parts List
Wiring Diagrams

Calculations for total coolant volume estimates

Use these calculations to get an estimate for the total coolant volume necessary for your plasma cutting system.

The capacity of the coolant reservoir for the plasma cutting system is 22.7 liters – 45 liters (6 U.S. gallons – 12 U.S. gallons). A cutting system with long leads requires more coolant than a cutting system with short leads.

Note:

For coolant installation steps, refer to Overview of cutting system coolant.

Total estimated volume in liters


26	+	0.2534	X	Length of leads (in meters) between the plasma power supply and gas connect console for your cutting system	=	Total estimated volume (in liters)

Total estimated volume in U.S. gallons


6.8	+	0.0204	X	Length of leads (in feet) between the plasma power supply and gas connect console for your cutting system	=	Total estimated volume (in U.S. gallons)