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General| Cooling Capacity | 300 tons |
|---|---|
| Compressor Type | Screw |
| Refrigerant | R-134a |
| Sound Level | 85 dBA |
| Power Supply | 460V/3Ph/60Hz |
| Weight | 20, 000 lbs |
Verifies unit delivery and condition.
Details the RTAA series helical-rotary air-cooled liquid chillers.
Alerts personnel to potential hazards and conditions causing damage.
Outlines general tasks for installing an RTAA unit.
Details information on the outdoor unit nameplate.
Describes information on the compressor nameplate.
Information on the evaporator nameplate for remote units.
Procedures for testing system for leaks and evacuating using a vacuum pump.
Method to determine system refrigerant charge using tables and sightglasses.
Guidelines for sizing and selecting power supply wiring.
Details wiring for chilled water pump interlock and external auto/stop functions.
Steps for connecting unit power supply and control wiring.
Explanation of the refrigeration cycle and component functions.
Details the semi-hermetic, direct-drive helical rotary compressor.
Explains how the UCM sequences compressor starts and load management.
Describes the six menus available on the operator interface panel.
How UCM monitors compressor current for overload protection.
Procedure to test EXV operation and module.
How UCM controls unit setpoint and modulates compressors.
Verifies voltage meets criteria and measures supply voltage at disconnect.
Step-by-step guide for starting the unit after pre-start checkout.
Normal superheat values and how to check them.
Normal subcooling values and their relation to superheat.
Procedure for short-term shutdown and subsequent restart.
Steps for taking the unit out of service for an extended period.
Guidelines for reducing refrigerant emissions during service.
