Thermo King 098916, Maintenance Manual

Page: 36 / 196

Unit Description, Features & Options
35
Advanced Fresh Air Management
(AFAM) and Advanced Fresh Air
Management Plus (AFAM+)
(Optional)
An advanced microprocessor controlled fresh air
management system provides:
• programmable control of the air exchange rate
• programmable delayed vent opening
• automatic closure of the air exchange vent
during low ambient conditions
• data logging of the air exchange rate and vent
opening delay interval
The AFAM system includes a door control
module, vent door and vent grille. The MP-3000a
controller sends a communication signal to the
door control module to position the vent door to
the desired position. The controller can also be set
to delay opening of the fresh air vent for up to 72
hours, in 1-hour increments. This allows faster
product temperature pull-down.
An advanced microprocessor controlled fresh air
management system also provides programmable
control of the CO
2
levels in the container, and data
logging of the CO
2
gas level readings.
The AFAM+ system includes a gas sensor unit,
sensor filter, vent loop, pressure relief valve
assembly and single purge port. The controller
can be set to maintain a maximum CO
2
level in
the container between 0 and 25 percent.
1. Gas Sensor Assembly (Mounts in Evaporator)
2. Gasket
3. Vent Door Assembly
4. Linkage Assembly
5. Damper Motor Housing
6. Damper Motor Assembly Mounting Bracket
7. Interface Board and Cable (Mounts in Control
Box)
8. Stop Bracket, Vent Door Full Open
9. Stop Bracket, Vent Door Closed
10. Grille
Figure 13: Advanced Fresh Air Management
(AFAM+) Option
AXA0235
1
2
4
3
5
6
1
9
8
7