This course covers operation, diagnosis and maintenance for Model RTAC rotary chiller CH530 micro electronic control systems with additional coverage of refrigeration system components. Emphasis will be placed on operational characteristics of the GP2 compressor, Falling Film evaporator and the E-coil designed condenser. Additional coverage provided for chiller operation using unit ANSI Trane wiring diagrams with emphasis on understanding the Adaptive system control logic.
Specific Course Objectives:
• Understand the operating Characteristics of 140 through 500-ton RTAC machines.
• Understand chiller's construction and the physical relationship of components.
• Learn performance/acoustic capabilities of each machine's design.
• Learn GP2 Compressor construction, operation and checkout.
• Learn Falling Film Evaporator construction, operation and checkout.
• Be able to read and interpret unit wiring diagrams.
• Learn the CH530 control architecture, start sequence and operating logic.
• Be able to interface with Techview / Dyna View.
• Understand the field service, maintenance, and limitations of RTAC.
A. RTAC Helical-Rotary Chiller Specifics
1. RTAC Features Overview
2. Rotary Chiller Refrigeration Cycle
3. R-134a/Polyoester Oil concerns
4. Main Component Overview
1. Operation & Advantages
2. ARI Conditions
3. Machine Logging
4. Operational Parameters
C. GP2 (CHHN) Compressor
2. R-134A Optimization
3. Bearing Configuration
4. Oil Distribution
5. Compressor Loading / Unloading
6. Compressor Heater
D. Falling Film Evaporators
1. With Liquid Vapor Separator
2. Without Liquid Vapor Separator
3. Oil Return
4. Freeze Avoidance
E. E-Coil Condenser
1. Ambient Options
2. Condenser Fan Staging
3. Corrosion Protection
F. Liquid Level Sensor
2. External Intelligence (LLID)
3. Internal Intelligence (LLID)
G. Electronic Expansion Valve
2. Position Indicator
3. LLID Operation
H. Tracer CH530 Adaptive ControlTM
1. Control Platform
2. Adaptive Control Logic
3. Easy View
4. Dyna View