Figure4.2Recommended Fan Shroud Example - Novanta vi30 User Manual

OPTICAL SETUP
Welding
Helium
Cutting/Drilling
Nitrogen
Cutting/Drilling
Oxygen
Cooling
Heat generated by excited CO2 molecules is transferred to the bore walls and cooling fins by diffusion.
For air cooled versions, dual side fans, or rear fan prevent the laser from overheating. Further heat can
also be transferred to water through external corrosion-resistant copper alloy tubing to regulate
temperature for maximum stability.
Cooling by fan or air
Because vi30/40 lasers are OEM products, they do not include cooling fans. Customers must provide
some type of air cooling to prevent the laser from overheating. NOVANTA recommends using two
cooling fans rated for at least 4.0 m3/min (140 CFM) for the vi30, or 5.4m3/min (190) for the vi40. The
cooling fans should measure 120 × 120 mm (4.7" × 4.7") and have at least 57.2 mm (2.25") of
unobstructed clearance between the rear face of the fan housing and any mounting surface or enclosure.
> 99.997% purity; filtered to ISO Class 1 particulate
High Purity
level
Grade
> 99.9500% purity; filtered to ISO Class 1 particulate
High Purity
level
Grade
> 99.9998% purity; filtered to ISO Class 1 particulate
Ultra-pure Grade
level

Figure4.2Recommended fan shroud example

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