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Au3Tech HW970 - Installation and Setup; Mechanical Installation

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11
Mechanical installation
Cooling water loop installation
The HW970 handheld welding head is equipped with a set of cooling water channels. It
should be noted that when the laser power is greater than 500 watts, it is recommended
to use water cooling. From Figure 3, you can see the position and number of the water
cooling ports, and the table below lists the recommended water flow speeds in detail.
The design of the water-cooling interface is a closed loop system. External water supply
can be used freely, but the requirements in the list must be met.
Figure 3 HW970 water cooling interface
Parameter name
Parameter value
Cooling water pipe diameter (outer diameter)
6mm
Minimum flow rate
1.8liters/minute0.48gpm
Inlet pressure
170-520kPa (30-60 psi)
Inlet temperature
≥room temperature/dew point
Hardness (relative to CaCO3)
250mg/liter
pH range
6 to 8
Acceptable impurity particle
Diameter < 200 microns
Pneumatic installation
Impurities in the welding gas such as hydrocarbons and water vapor can damage
Cooling water inlet
Cooling water outlet