21
8. Electronic Function
8.1. Main Features
•
Function:
Cooling only
•
Modes:
Energy Saving (no hot gas bypass) or Normal cooling (with hot gas bypass)
•
Temperature setting range:
Cooling: 63 ~ 86°F (17 ~ 30°C)
•
Compressor delay function:
3.5 minutes during startup for self-protection
•
Evaporator fan:
3 levels—high, medium or low; auto switch between high, medium or low upon request
•
Condenser fan:
One speed, synchronized with the compressor
•
Self-diagnostic error code display
•
Memory function during power shut down (or unplug)
•
Displays both ambient and setting temperature
•
Temperature default setting:
Fahrenheit; interchangeable between Fahrenheit and Celsius
• No beep when button is pressed, but alarm sounds when unit is reported malfunctioning
8.2 General Controller Technical Specifications
•
Normal operating voltage range:
Single-phase 208-240V AC, 60 Hz
•
PCBA working environment:
o
Operating temperature range:
14°F ~ 140°F (-10°C ~ 60°C)
o
Storage temperature range:
-4°F ~ 158°F (-20°C ~ 70°C)
o
Relative humidity range:
35% to 98%
•
Temperature sensor:
R25 / 50 = 5K, B = 3470, accuracy: ± 1
8.3 Sensor Definitions
• The ambient temperature is taken from the thermostat located at the air intake of the evaporator (referred to as T1). Option-
al temperature readings can be taken from the external EnviroSense2 module when connected to the WEBCARDLX. There
is no physical key on the appliance to activate this external thermostat. The EXTERNAL indicator will light up when there is
external temperature data. This external thermostat will automatically deactivate if there is no signal from an external PC for
more than 60 seconds, in which case the EXTERNAL indicator will turn off.
• Another thermostat in the unit measures the temperature of the evaporator coil (referred to as T2).
• The setting temperature (referred to as Ts).
• Low Pressure Sensor - Monitors the system for low-pressure faults (e.g. coolant leakage or a blockage).
• High Pressure Sensor - Monitors the system for high-pressure faults (e.g. dirty condenser or condenser fan failure).
Lower Pressure Sensor
Open: 0.05 ± 0.05 MPa
Closed: 0.16 ± 0.05 MPa
High Pressure Sensor
Open: 4.85 ± 0.15 MPa
Closed: 4.1 ± 0.2 MPa
Summary of Contents for SRCOOL33K
Page 4: ...4 2 Unit Dimensions 78 4 in 1991 mm 42 7 in 1085 mm 23 6 in 599 mm...
Page 7: ...7 5 PCB and Wiring Diagrams 5 1 Circuit Diagram UPPER FAN MOTOR LOWER FAN MOTOR...
Page 10: ...10 5 PCB and Wiring Diagrams 5 2 1 3 Power PCBA Gerber Layout...
Page 14: ...14 5 PCB and Wiring Diagrams 5 2 3 2 Translator PCBA Gerber Layout...
Page 39: ...39 2 Dimensiones de la Unidad 1991 mm 78 4 1085 mm 42 7 599 mm 23 6...
Page 45: ...45 5 Diagramas del Cableado y PCB 5 2 1 3 Diagrama PCBA Gerber de Energ a...
Page 49: ...49 5 Diagramas del Cableado y PCB 5 2 3 2 Diagrama del Traductor PCBA Gerber...
Page 71: ...71...
Page 72: ...72 18 06 003 93 3868_RevA 1111 W 35th Street Chicago IL 60609 EE UU www tripplite com support...
