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Table of Contents
CSR-20 & CSR-40, September 1999
Dehumidify System, Humidity System,
Water Pressure Switch, USDA
Temperature Sensor, Pulp Sensor and
Chart Recorder Circuits (Options)
9-11
Cool Mode – Chill Load (Setpoint at -9.9 C
[14.1 F] or Above); Water-Cooled
Condenser Operation; Power Monitor
Limiting Unit Power Consumption;
Economy Mode OFF
9-12
Cool Mode – Chill Load (Setpoint at -9.9 C
[14.1 F] or Above); Condenser Fan ON;
Power Monitor Limiting Unit Power
Consumption; Economy Mode OFF
9-13
Cool Mode – Chill Load (Setpoint at -9.9 C
[14.1 F] or Above); Condenser Fan ON;
Economy Mode OFF
9-14
Cool Mode – Chill Load (Setpoint at -9.9 C
[14.1 F] or Above); Condenser Fan ON;
Economy Mode OFF; Humidify Mode
(Option) ON with container humidity
above humidity setpoint
9-15
Cool Mode – Chill Load (Setpoint at -9.9 C
[14.1 F] or Above); Condenser Fan ON;
Economy Mode OFF; Humidify Mode
(Option) ON with container humidity
more than 2% below the humidity
setpoint
9-16
Modulation Mode – Chill Load (Setpoint at
-9.9 C [14.1 F] or Above); Condenser
Fan ON; Economy Mode OFF;
Temperature Out-of-range
9-17
Modulation Mode – Chill Load (Setpoint at
-9.9 C [14.1 F] or Above); Condenser
Fan ON; Economy Mode OFF;
Temperature In-range; Dehumidify ON
with Humidity 1-5% Above Humidity
Setpoint
9-18
Modulation Mode – Chill Load (Setpoint at
-9.9 C [14.1 F] or Above); Condenser
Fan ON; Economy Mode OFF;
Temperature In-range; Dehumidify ON
with Humidity 5% or More Above
Humidity Setpoint
9-19
Modulation Mode – Chill Load (Setpoint at
-9.9 C [14.1 F] or Above); Condenser
Fan OFF; Economy Mode ON;
Temperature In-range
9-20
Modulation Mode – Chill Load (Setpoint at
-9.9 C [14.1 F] or Above); Condenser
Fan OFF; Economy Mode ON;
Temperature In-range; Warm Gas
Bypass Valve ON
9-21
Null Mode – Chill Load (Setpoint at -9.9 C
[14.1 F] or Above) Condenser Fan ON;
Economy Mode OFF
9-22
Heat Mode – Chill Load (Setpoint at -9.9 C
[14.1 F] or Above); Economy Mode
OFF; Temperature In-range
9-23
Cool Mode – Frozen Load (Setpoint at -10.0 C
[14.0 F] or Below); Condenser Fan ON;
Container Return Air Temperature Above
-10.0 C [14.0 F]; Power Monitor Limiting
Unit Power Consumption; Economy
Mode OFF
9-24
Cool Mode – Frozen Load (Setpoint at -10.0 C
[14.0 F] or Below); Condenser Fan ON;
Container Return Air Temperature Below
-10.0 C [14.0 F]; Economy Mode OFF;
Temperature In-range
9-25
Null Mode – Frozen Load (Setpoint at -10.0 C
[14.0 F] or Below) Condenser Fan OFF;
Economy Mode OFF
9-26
Null Mode – Frozen Load (Setpoint at -10.0 C
[14.0 F] or Below) Condenser Fan OFF;
Economy Mode ON
9-27
Defrost
9-28
CSR-20 & CSR-40 Wiring Schematic for
All Models with Three Evaporator Fans
9-29
CSR-20 & CSR-40 Wiring Diagram for
All Models with Three Evaporator Fans
9-30
CSR-20 & CSR-40 Wiring Schematic for
All Models with Two Evaporator Fans
9-33
CSR-20 & CSR-40 Wiring Diagram for
All Models with Two Evaporator Fans
9-34
Refrigeration System Schematics:
Refrigeration System Components
9-37
Full Cool Flow and Pressure Diagram
9-38
Modulation Cool Flow and Pressure Diagram 9-39
Dehumidification Flow and Pressure Diagram 9-40
µ
P-D Menu Flow Diagram
9-41
