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Chiller Setup
Ambient Temperature and Relative Humidity
The chiller is designed for indoor installation in ambient temperatures between 5 °C and
30 °C (41 °F and 86 °F). Relative humidity should not exceed 80% (non-condensing).
Location
The chiller should be installed on a strong, level surface and be located as close to
possible to the laser. It should not be installed closer than 4 feet (1.4 meters) to a heat
generating source, such as heating pipes or boilers. If possible, the chiller should be
located near a suitable drain to prevent flooding in the event of leaks. Do not place it
where corrosive fumes, excessive moisture or dust, or high room temperatures are
present.
For ease of positioning and maneuverability, the chiller is supplied with casters. The front
wheels can be locked to keep the chiller in place while in use. To help prevent voltage
drops, position the chiller as close as possible to the power distribution panel. Avoid
voltage drops by using a properly grounded power outlet wired with 14 gauge or larger
diameter wire. The use of an extension cord is not recommended
Oxygen Depletion Risk
In the event of a refrigerant leak, refrigerant gas may displace oxygen that could result in
suffocation and death. Never place the chiller in a room that is smaller than the minimum
room volume requirement as defined below. If the room is ventilated, the air distribution
system must be analyzed to determine the worst case distribution of leaked refrigerant. A
leak detector alarm device is always required in a ventilated room that does not meet the
minimum room volume given below. Assure adequate and sufficient room volume and
ventilation before placing a chiller that contains refrigerant in a room. Contact
Polyscience at 800-229-7569 with any concerns or questions.
Pounds of refrigerant charge can be read directly from the nameplate on the chiller.
Remember to include in the calculation any refrigerant that may be stored in any other
containers.
Example: Two chillers are placed in a room, each containing 6 pounds of refrigerant. The
minimum room volume shall be 12 x 110 cubic feet, or 1320 cubic feet.
© 2019 Cutting Edge Optronics, Inc.
NOTE:
The chiller may be located at a level below that of the equipment being cooled.
As long as the process remains closed, overflow will not occur when adding cooling
fluid to the chiller reservoir.
Minimum Room Volume = Pounds of refrigerant x 110 cubic feet
Chapter 2: Laser System Setup
7
Patara End-Pumped Laser Quick Start Guide
Approved for Public Release; NG19-1901
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