T-374
3–6
3.5.3
Activate or Deactivate Purge Mode
When
Purge
mode is active, it allows the user to suspend EverFRESH operations while pre-charging gas levels in
the container. All EverFRESH control actions and alarm 929 is suspended in order to purge the container to a
desired gas concentration. When activated, Purge mode stays active for a period of time selected from the Purge
mode sub menu.
NOTE
The CO
2
setpoint is the level of CO
2
allowed for the cargo. The range is 1 to 19% in 1% increments,
with a default setting of 5%.
NOTE
The O
2
setpoint is the minimum level of oxygen allowed for the cargo. The range is 2 to 17% in 1%
increments; the default setting is 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 “PUrgE” mode is displayed, then press the ENTER key.
4. “CO2SP” appears in the left display with the CO
2
setpoint blinking in the right. Use the Arrow keys to change
the CO
2
setpoint and press ENTER to confirm. Or, just press ENTER to keep the originally displayed value.
5. “O2 SP” appears in the left display with the O
2
setpoint blinking in the right. Use the Arrow keys to change
the O
2
setpoint and press ENTER to confirm. Or, just press ENTER to keep the originally displayed value.
6. “PUrgE” is now in the left display. Use the Arrow keys to toggle the right display to “On” or “OFF”, then press
the ENTER key.
When “OFF” is selected, Purge mode is either not activated or terminated if it was previously activated.
When “On” is selected, “tim” is in the left display with the current purge time flashing in 1 to 10 hour
increments selectable in 1 hour intervals (default 5 hours) in the right display. The “tim” value is the
amount of time EverFRESH will be held off to allow charging and settling of gases.
7. Use the Arrow keys to change the time value and press the ENTER key to confirm and enter Purge mode.
8. Purge mode is now active. During Purge mode, while the timer is counting down the display toggles
between:
• left display shows “PUrgE” and right display shows how much time remaining.
• left display shows temperature setpoint and right display shows the supply air temperature.
NOTE
If there is an alarm in the alarm list, the Purge mode countdown will not be displayed but Purge mode
is still enabled.
9. When the Purge mode timer expires, Fresh mode is enabled and the unit reverts to normal temperature
control display. Purge mode is terminated on power cycle, trip start, defrost or pre-trip.
10. To view CO
2
and O
2
values during Purge mode, exit Cd71 by pressing the CODE SELECT key until Cd 71
is in the left display. Then, use the up arrow to bring up Cd44 and press the ENTER key.
Summary of Contents for EverFRESH
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Page 56: ...T 374 5 26 4 Note the orientation of the check valve 5 Reinstall in reverse order ...
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Page 67: ...8 1 T 374 SECTION 8 SCHEMATICS DIAGRAMS STANDARD UNITS Figure 8 1 Legend Standard Units ...
Page 68: ...T 374 8 2 Figure 8 2 Schematic Standard Units Page 1 ...
Page 69: ...8 3 T 374 Figure 8 3 Schematic Standard Units Page 2 ...
Page 70: ...T 374 8 4 Figure 8 4 Wiring Diagram Standard Units ...
Page 72: ...T 374 9 2 Figure 9 2 Schematic Units with CO2 Injection Page 1 ...
Page 73: ...9 3 T 374 Figure 9 3 Schematic Units with CO2 Injection Page 2 ...
Page 74: ...T 374 9 4 Figure 9 4 Wiring Diagram Units with CO2 Injection ...
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