Cooling Water Loop (Not All Models) - Hypertherm HyPrecision 100D Instruction Manual

6.3 Cooling Water Loop (Not all Models)

The cooling loop consists of an inlet water valve to turn on the cooling water. The electronic solenoid
valve (if applicable) will automatically turn on the cooling water any time the motor is running. Models
without an electronic solenoid valve will have to be controlled manually using a ball valve. Models with
water/oil coolers may also have a water-modulating valve to control the cooling water flow rate relative
to the hydraulic oil temperature. A probe in the tank senses the oil temperature and adjusts the water
flow to maintain a steady hydraulic oil temperature.
The modulating valve has been factory set to keep the oil temperature at approximately 115°F (45°C)
Local air and water temperatures may require that the modulating valve be adjusted.
Water Modulating Valve Adjustment
The oil temperature in the hydraulic tank should be maintained at approximately
115°F. High hydraulic oil temperatures can adversely affect oil life and high-
pressure seal life.
Adjustment Procedure:
1. If the oil temperature is over 115°F:
2. Turn the screw 1/4 turn clockwise to reduce oil temperature.
3. Wait 15 minutes and look at oil temperature.
4. Repeat procedure until oil temperature is at or below 115°F.
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