Thermo King 098916, Руководство по обслуживанию

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Operating Instructions
94
Testing AFAM+ / AFAM System
The system consists of the following main parts:
• Gas Analyzer
• Mounted in Evaporator Section
• Interface Board
• Mounted on Main Relay Board (MRB)
• Damper Motor
• Mounted above Control Box
• Vent Door Linkage
• Connects Damper Motor to Vent Door
• Vent (FAE) Door
• Opens to allow air exchange in and out of
the container
AFAM+ Option Alarm Codes (see
manual for further descriptions) –
Software versions 04100100 and
above
• Code 57 – AFAM Control Module or Damper
Motor Error
• Code 68 – AFAM Gas Analyzer Error
• Code 69 – Gas Analyzer Calibration
• Code 122 – O2 Sensor Calibration Error (PTI
Only) (if equipped)
How the system works:
The way the AFAM+ feature will operate depends
on the AFAM mode selection in the setpoint
menu. If selection is:
‘OFF’: Vent door is closed and remains closed.
There will be no indication of CO2 or O2 in the
‘DATA’ menu. AFAM selection is automatically
set to OFF for temperature setpoints below -10° C
(14° F)
‘UNITS’: Controller uses AFAM DELAY and
AFAM RATE to adjust FAE door to the user
setting. The FAE door will open to the set AFAM
RATE after the AFAM DELAY (if any) has
expired. If there is an AFAM RATE set, and the
FAE door is not open, verify that the opening is
not being delayed by an AFAM DELAY setting
before taking any action. The FAE door will close
automatically during any defrost cycle. It will
re-open to the user setting once the defrost cycle
has completed. There will be no indication of
CO2 or O2 in the ‘DATA’ menu.
‘DEMAND’: Controller uses gas analyzer to
control FAE door open / close based on user
settings of CO2 and O2 (if equipped) and AFAM
DELAY. The FAE door will not open until the
container temperature is ‘In Range’ of setpoint
regardless of the CO2 and O2 (if applicable)
readings. If the door is closed, verify that the CO2
is not above CO2 setpoint and the O2 (if
equipped) is not below O2 setpoint. The FAE door
will open after the AFAM DELAY (if any) has
expired. The FAE door will close automatically
during any defrost cycle. The gas sensor readings
are updated every 15 minutes. There will be active
CO2 and O2 (if applicable) readings in the
‘DATA’ menu
‘MANUAL’: Allows the operator to manually
move the door to the desired opening based on the
door position reference decal located on the frame
of the unit, next to the FAE door. There will be no
indication of CO2 or O2 in the ‘DATA’ menu.
How to verify System Operation
If the system appears not to be operating properly,
it is best to verify that the controller can recognize
if the AFAM+ option is installed. Use the ‘Auto
Config’ function found in the ‘Configuration’
menu. Select setting to ON. Allow the
configuration steps to complete. The last step of
the configuration will be AFAM. Watch the LCD
display closely during this test. When to AFAM
door opens and closes, the AFAM option will be
set. The controller will now test communications
to the gas analyzer. When the gas analyzer is
found, the option will change to AFAM+.
NOTE: Upgrade the controller software to the
latest released version. ‘Auto Config’ will be
automatically be initiated upon successful
completion of a software flashload.
NOTE: If only the AFAM option is found, then
there is a communication problem with the gas
analyzer.
NOTE: If only Gas Analyzer is found, there is a
problem with the operation of the damper motor.