Continuum Surelite EX 10, Operation And Maintenance Manual

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Continuum Surelite Laser
62 996-0207
Figure 43 Power supply chassis assembly
Cooling Group, CG
General description
The cooling group half of the unit provides a temperature stabilized circulating loop of distilled
water to the laser head, cooling the laser rod and flashlamp by water/air forced convection. It
contains a distilled water reservoir, a magnetically coupled pump, a deionizing filter cartridge and a
finned tube radiator heat exchanger with a cooling fan (two fans for a 20 Hz laser). The
pressure/volume characteristics of the cooling water pump are matched to the laser head power
dissipation/flow requirements.
Internal features
Referring to the assembly drawing, the pressure/flow and water temperature interlock switches are
visible. The operation of the cooling fans is controlled by the PCBA temperature control, mounted
on the opposite side of the chassis. It coordinates temperature maintenance and proportional fan
speed to provide a temperature stabilization within ±0.2° C. Water temperature is sensed by a
thermistor which controls fan speed. (The temperature sensing circuitry is protected against open
or short circuit sensor leads.)
624-4100
Power control PCB