17
Synrad Firestar OEM v30 reference guide
Cooling connections (cont.)
Air-cooled connections (SA models)
Air-cooled v30 (SA) lasers are shipped without cooling fans so customers must provide some type of air cooling to prevent
overheating and keep laser/RF heatsink temperatures below 45 °C (113 °F). We recommend using two cooling fans rated
for at least 4.0 m
3
/min (140 CFM) at a static air pressure of 13.2 mm H
2
O (0.52 in H
2
O). Mount them as shown in Figure
4. Cooling fans should have a diameter of approximately 120 × 120 mm (4.7 × 4.7") and have at least 57.2 mm (2.25" ) of
unobstructed clearance between the outside edge of the fan housing and any mounting surface or enclosure.
OEM v30 SA lasers do not provide a voltage output sufficient to power cooling fans; users must provide an external power
source appropriate for the selected cooling fans. Because of the heat generated by internal RF circuitry, establishing sig-
nificant airflow evenly over the entire surface of the combined laser/RF chassis is vitally important to the performance and
longevity of the laser.
Fans should be mounted so that they are centered both
horizontally and vertically on each side of the OEM v30 laser.
Figure 4 Recommended v30 cooling fan locations
SYNRAD recommends side-mounted cooling fans for OEM v30 lasers, but rear-mounted, single-fan cooling design is possi-
ble. Figure 5 illustrates the rear-cooling concept. Review the guidelines listed below to ensure that your integration provides
enough air flow to prevent damage to the laser. The fan must supply at least 8.5 m
3
/min (300 CFM) to prevent overheating.
A rear-cooled laser may experience some performance loss when compared to a typical side-mounted cooling configuration.
Guidelines for rear cooling
■ Design the cooling shroud so that it encloses the full length of both the laser and the cooling fan.
■ Fit the shroud snugly against the laser’s cooling fins so that air is ducted between the fins and not around them.
■ For proper heat removal, open the shroud at the front to direct air flow through the laser.
■ Use a cooling fan rated for a least 8.5 m
3
/min (300 CFM) at a static air pressure of 23.9 mm H
2
O (0.94 in H
2
O) and
position it approximately 150 mm (6.0") from the rear of the laser.
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