Controls Menu

Note When a submenu is highlighted, pressing the ENTER F4 key again will open a view showing how the unit is currently set up. In order to see some of these different selections, turn the option on and then enter the Controls menu again.

Controls Menu and Controls Overview

Parent topic: Main Menu

Cold Treatment (CT)

This feature is designed to maintain a temperature below the actual set point for a period of time, (per USDA specifications) and then increase the temperature to the final set point. For a complete description, refer to (Cold Treatment (CT)). CT FEATURE must be selected ON under the CONFIGURATION/OPTIONS/CT FEATURE for COLD TREATMENT to be active or visible.

Cold Treatment

Multiple Temperature Set (MTS)

This feature is designed to maintain up to nine different set points with eight timed periods in between the nine set points. MTS FEATURE must be selected ON under the CONFIGURATION/OPTIONS/MTS FEATURE for MULTIPLE TEMP SET to be active or visible. Refer to (Multiple Temperature Setpoint (MTS)).

Multiple Temperature Set

OptiSet™

Allows all the AFAM variable to be set by selecting a specify commodity. Refer to (Change the AFAM+ Settings Using OptiSet™) and AFAM+ Setting Guide TK51318. AFAM must be selected under the CONFIGURATION/OPTIONS/AFAM MODULE for OptiSet to be active or visible.

OptiSet Display

Temperature Setpoint

Used to change the controller setpoint. The setpoint can also be changed from the Unit Status Display by pressing the Setpoint F3 key. The new setpoint is recorded in the controller datalogger and appears in the display.

Note The controller will default (return) to the previous setpoint if the new setpoint is not entered within 30 seconds.

Controlling Mode

To change the temperature and fan control of the unit. Select from OPTIMIZED or NON-OPTIMIZED.

  • Optimized: The default mode for the new MAGNUM PLUS for temperature and fan control.

  • Non-Optimized: The default mode for the original Magnum for temperature and fan control.

    Note Enter setpoint temperature before selecting the Non-Optimized mode. The controller automatically turns the Non-Optimized mode off when setpoint is changed.

Bulb mode allows the system user to select one of three evaporator fan operations as well as the defrost termination temperature.

  • Bulb mode HIGH: Evaporator fan high speed only.

  • Bulb mode LOW: Evaporator fan low speed only.

  • Bulb mode CYCLE: Evaporator fan cycle - fans will cycle between low and high speed every 60 minutes, starting with the low speed fan operation first for 60 minutes.

CO2 Max

Pull Down Selection

When the Pull Down Selection is ON, the unit runs with the fans in high speed for a period of time before allowing it to switch the fans to low speed.

Pull Down Selection

Water Cooled Condenser

This feature is turned ON when the unit is equipped with the optional water cooled condenser. If this feature is turned OFF, the condenser fan runs as required. If turned ON, the condenser fan does not run unless no cooling water is available, then the unit will trip off on HPCO and the condenser fan will run as required.

Water Cooled Condenser

Dehumidify Control

During Chill mode operation, a dehumidification function is available (optional after Sep 2019) to reduce the relative humidity in the container to the desired humidity setpoint.

HUMIDITY SENSOR mounted must be selected under the CONFIGURATION/OPTIONS/HUMIDITY SENSOR for DEHUMIDIFY CONTROL to be active or visible. Refer to (Dehumidify Mode) for a complete description.

Dehumidify Control

Dehumidify Setpoint

The relative humidity setpoint can be set from 50 to 99 percent.

HUMIDITY SENSOR mounted must be selected under the CONFIGURATION/OPTIONS/HUMIDITY SENSOR for DEHUMIDIFY SETPOINT to be active or visible. Refer to (Dehumidify Mode) for a complete description.

Dehumidify Setpoint

AVL (Air Ventilation Logging)

The Fresh Air Exchange Recorder (AVL) detects vent disk movement and automatically displays a value in the LCD display for values of 0 to 125 m3/h. For settings greater than 125 m3/h the technician must set the AVL Open Value to match the notched setting on the Fresh Air Exchange Vent.

AVL must be selected under the CONFIGURATION/OPTIONS/CONTROLLED ATMOSPHERE (CA) and FRESH AIR OPTION must be mounted under CONFIGURATION/OPTIONS/FRESH AIR OPTION for AVL to be active or visible.

Enabling AVL

Fresh Air Vent Man - AFAM Mode

Can be set to OFF or AFAM.

OFF - Will override all settings and keep the AFAM door completely closed.

AFAM - Will allow and air exchange Rate and or Delay to be set.

Refer to (Starting the AFAM System) for more information about setting up AFAM.

AFAM Mode

Fresh Air Vent Man - AFAM+ Mode

Can be set to OFF, AFAM, or AFAM+.

OFF - Will override all settings and keep the AFAM door completely closed.

AFAM - Will allow and air exchange Rate and or Delay to be set.

AFAM+ - Will allow a CO2 Max to be set. Some container prefix allow O2 MIN to be set.

Refer to (Advanced Fresh Air Management Plus (AFAM+) System) for more information about setting up AFAM+.

AFAM+ Mode

AFAM Delay

Hours the AFAM door will remain closed before opening to a desired AFAM Rate or due to gas sensor readings. Selectable from 1 to 48 hours. Active in AFAM and AFAM+ modes.

AFAM Delay

AFAM Rate

Use to set AFAM door opens to desired rate, selectable from 0 CMH to 225 CMH.

AFAM Rate

AFAM+ CO2 Max

Used to set the highest level of Carbon Dioxide allowed in the container. The AFAM+ door will open or close to maintain this level. Active only when AFAM+ is enabled. Selectable from 0% to 25%. Refer to (Change the CO2 Minimum and Maximum Setting) for more information.

CO2 Max

AFAM+ O2 Min

Used to set the lowest level of Oxygen allowed in the container. The AFAM+ door will open or close to maintain this level. Active only when AFAM+ is enabled. Selectable from 0% to 21%.

O2 Min

Smart PTI

Use to enable ON or Disable OFF the Smart PTI surveillance. Smart PTI automatically monitors individual component performance during normal reefer operation and during defrost cycles. When a Smart PTI cycle is completed, the results are stored in the controller memory and a <SMART-PTI Pass> flag is logged. A timer is then automatically started to determine next cycle start. A menu point and a check mark symbol provide visual status of the last passed Smart PTI on the controller display. All checks are performed during normal reefer operation. There is no need for additional off-line operations and unnecessary energy consumption. The Smart PTI results logging can be requested anytime.

Smart PTI

Silent Mode

Silent mode is a way to make the reefer unit silent without manual switching it OFF and ON.

The feature is normally used when the reefer unit is located near public areas where the noise from the unit is annoying and not acceptable during ie. the night-time. The feature is selected either ON or OFF and the start time of day and stop time of day is configured all in the control menu, The time setting is controllable in increments of 5 minutes.

The mode is controlled by the wall clock of the controller and the start and stop time. The wall clock might not be set to the local time, so this must be taken in respect during the selection. In case of a period start prior to midnight the start time will be ‘higher’ than the stop time.

When the time is in between start and stop the unit operation will be halted, and the unit will not be operating the compressor, fans and heater. When the period ends normal operation will restart and the unit will operate through out the day until the beginning of the next period.

During the silent mode the unit will show the following:

At the temperature log the flag ‘s’ will be set to indicate the halted operation.

Changing the configuration of the mode is documented in the event log.

Since the unit is not allowed to operate during the silent period, the normal surveillance is not ongoing. The surveillance is re-engaged when the unit restart the operation.