©Newport Corporation
MKS Spectra-Physics Confidential
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Heat Dissipation Requirements
The power supply dissipates approximately 300 watts
Air Flow Requirements
Laser
Self-contained purge system (ALPS) and does not require filters.
Power Supply
Provide enough room cooling capacity to remove this waste heat and prevent the system from
overheating.
Provide at least 15 cm (8 in.) of unobstructed space around the front and rear panels of the QPS to
allow cooling air to enter the front and heated air to exhaust from the back.
The power supply draws 200 CFM of air flow.
You must leave 8 inches of clearance behind the QPS for airflow and umbilical attachment and
bend radius. If QPS is rack mounted make sure to leave enough space for a service loop on cables
and connections.
Chiller
The chiller selected must be able to dissipate 2200 watts and maintain a regulated coolant
temperature of 20C +-.5C, under all operating conditions for ambient temperature, humidity, and
altitude at the end of life of the laser.
Nalco
Nalco 460-PCCL104 is a premixed, liquid corrosion inhibitor that can be added directly to a
closed-loop cooling system. It is designed to protect ferrous metals and copper alloys from
corrosion. It is nitrite free and it minimizes the problems associated with bacteria control. Nalco
can be ordered directly from Spectra-Physics, P/N 1607-0546.
See Appendix B, “Nalco MSDS,” in the User’s Manuel for more information about the Nalco
product.
