Enabling Everfresh Operation; Activate Fresh Mode To Start Up The System; Activate Off Mode - Carrier EverFRESH Operation, Service And Parts Manual

3.5

Enabling EverFRESH Operation

EverFRESH is activated via function code Cd71. This code allows the user to select a specific mode of operation
and the associated parameters. The modes of operation are: FrESh, OFF, and PUrgE. Within each of these modes
of operation are sub menus that have selectable parameters. Not all parameters are available in each sub menu.
When setting any mode of operation, the entire process must be followed to ensure all parameters are set.
When Fresh mode is active, the menu will toggle between the messages "FrESH ACtiV" and supply / return
temperatures. If the optional Cd76 CO2 Injection is available and set to ON, then the display will toggle between
"FrESH InJET" and supply / return temperatures.
3.5.1

Activate Fresh Mode to Start Up the System

In Fresh mode, all EverFRESH operations are enabled and setpoints for CO2 and O2 can be edited.
The CO2 setpoint is the level of CO2 allowed for the cargo. The range is 1 to 19% with a default set-
ting of 5%.
The O2 setpoint is the minimum level of oxygen allowed for the cargo. The range is 1 to 17% with a
default setting of 10%.
1. Press the CODE SELECT key on the keypad.
2. Use the Arrow keys until "Cd 71" is displayed, then press the ENTER key. The selection in the right display
will blink.
3. Use the Arrow keys until "FrESh" is in the right display, then press the ENTER key.
4. "CO2SP" appears in the left display with the setpoint value flashing in the right display. Press ENTER to
keep the originally displayed value. Or, use the Arrow keys to change the CO2 setpoint and press ENTER to
confirm. Setpoint values in the 1.0 to 2.8 range are in 0.2 increments, while values in the 3.0 to 19.0 range
are in 0.5 increments.
5. "O2 SP" appears in the left display with the setpoint value flashing in the right display. Press ENTER to keep
the originally displayed value. Or, use the Arrow keys to change the O2 setpoint and press ENTER to con-
firm. Setpoint values in the 1.0 to 2.8 range are in 0.2 increments, while values in the 3.0 to 17.0 range are
in 0.5 increments.
3.5.2

Activate Off Mode

When Off mode is selected, all EverFRESH operations will be disabled. The EverFRESH solenoids will be closed.
When a setpoint less than -1.0°C (30.2°F) is selected on the unit, Off mode is automatically enabled and the
display will show dashes "-----". The current EverFRESH setting will be saved.
1. Press the CODE SELECT key on the keypad.
2. Use the Arrow keys until "Cd 71" is displayed, then press the ENTER key. The selection in the right display
will flash.
3. Use the Arrow keys until "OFF" is displayed and press the ENTER key.
NOTE
NOTE
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