Thermo King 098203, Maintenance Manual

Page: 118 / 264

Main Menu
116
Change the AFAM Delay
NOTE: The fresh air exchange time delay should be established by the shipper.
The AFAM delay setting keeps the fresh air vent closed for a preset time when the unit starts. This allows
faster product temperature pull-down. The AFAM delay can be set from 1 to 72 hours in 1-hour
increments.
NOTE: During unit startup, the AFAM delay prevents the AFAM door from opening until the delay
times out. The AFAM delay prevents the AFAM door from opening due to the AFAM Rate or CO
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system settings.
1. Press the M
ENU
F4 key to enter the main menu.Press the F2 or F3 key to scroll to Setpoint/Control
Menu and Press F4 to expand the menu.
2. Press the F2 or F3 key to scroll to [AFAM DELAY] line.
3. Press the F4 key to enter the AFAM DELAY menu. The current setting (“0”) appears in the display.
4. Press the
F2
OR
F3
key to increase or decrease the time delay.
5. Press and hold the F4 key until you are returned to the main menu. The new time delay is recorded in
the controller and appears in the Display.
6. Press the
F1
key to exit the Setpoint screen.
Change the AFAM Rate
NOTE: The fresh air exchange rate should be established by the shipper.
The AFAM rate sets the desired air exchange rate. The actual door position is based on the AFAM rate
and the power supply frequency (Hertz).
1. Press the M
ENU
F4 key to enter the main menu.Press the F2 or F3 key to scroll to Setpoint/Control
Menu and Press
F4
to expand the menu.
1. Vent Door Assembly and Damper Motor
2.
Interface Board and Cable (Mounts in Control
Box)
Figure 96: AFAM+ System
WARNING: The vent door and motor actuator arm move immediately again when the a delay is
entered. Keep hands and tools away from the air exchange system components to prevent
personal injury or unit damage.
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