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Section 3 – General Information
3.1 Safety Precautions
Make sure you read and understand all instructions and safety precautions listed in this
manual before installing or operating your unit. If you have any questions concerning the
operation of your unit or the information in this manual, please contact our Sales
Department at 231-946-2931 or information@optitemp.com
.
• For safety reasons power supplies must be properly grounded. All federal, state, and
local codes should be followed.
• Never use flammable or corrosive fluids with this unit.
• Do not use automobile anti-freeze. Automotive anti-freeze often contains silicates or
other components that can damage your system. Only an un-inhibited glycol should
be used. Use of automobile anti-freeze will void the manufacturer’s warranty.
• Never place the unit in a location where excessive heat, moisture, or corrosive
materials are present.
• Do not modify or seal reservoir in any way.
• Performance of installation, operation, or maintenance procedures other than
described in this manual may result in a hazardous situation and may void the
manufacturer’s warranty.
• Transport the unit with care. Sudden jolts or drops can damage internal components.
• Observe all warning labels.
• Never remove warning labels.
• Never operate damaged or leaking equipment.
• Never operate the unit without heat transfer fluid in the reservoir.
• Always disconnect power to the unit before opening the control box.
• Always empty the reservoir before moving the unit.
• Never operate equipment with damaged power cords.
• Refer service and repairs to a qualified technician.
CAUTION: Our refrigerated chilling equipment uses chemical refrigerants for heat
transfer purposes. This chemical is sealed and tested in a pressurized system containing
ASME coded vessels; however, refrigerant gas can be released if there is a system
failure. Refrigerant gas can cause toxic fumes if it is exposed to flame. These units must
be placed in a well ventilated area, especially if open flames are present. Failure to follow
these instructions could result in a hazardous condition. Models OTC-.25A through OTC-
3.0A utilize a Hydro-fluorocarbon refrigerant (HFC) trade name R-134A. Models OTC-
5.0A through OTC-10A utilize a refrigerant trade named R-407c. The EPA has enacted
laws regarding the handling of refrigerants and has phased out the use of HCFC
refrigerants, such as R-22. HCFC refrigerant production will be available until January 1,
2020 for service purposes only. Customers are advised to immediately implement a
refrigerant management program including a survey of all equipment to document the
type and quantity of refrigerant in each machine. All refrigeration service technicians
must be certified by an EPA approved organization.
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