Thermo King SR-2 SmartReefer2, Diagnostic Manual

Page: 60 / 431

Section 3 – SR-2 Software Description
MAINTENANCE MENU
FEATURES
Service Test
Since the complexity of the control software makes it
impossible to predict exact operating conditions, a
troubleshooting feature called Service Test Mode
has been incorporated. This feature allows the unit
to be forced to a known set of operating conditions
in diesel mode, regardless of setpoint or
temperature sensor inputs. Service personnel can
now troubleshoot the system under defined
conditions. Service Test Mode can be used with the
unit running or shut down. Any shutdown alarms
must be cleared before Service Test Mode is
available.
The Thermo King SR2 control system features many
special technician functions. These functions are
available from the Maintenance Menus. A brief
explanation of each menu is included here.
For
details see Section 4 of this manual.
Accessing the Maintenance Menu
The Maintenance Menu is accessible from the Main
Menu. From the Standard Display press the MENU
key. The controller will display the Main Menu.
From the first Main Menu display (either Alarms or
Language) press and hold both the EXIT key and
the key with no label above it for 5 seconds. After 5
seconds the controller will display the Maintenance
Menu.
Interface Board Test
Interface Board Test Mode allows individual relays
or outputs to be energized. This permits service
personnel to troubleshoot individual circuits under
known conditions. Interface Board Test Mode can
only be used with the unit shut down. Any shutdown
alarms must be cleared before Interface Board Test
Mode is available.
Maintenance Menu Features
A brief explanation of each menu is shown here.
For complete operating details see Section 4.
Hourmeters
Display Self Test
The Hourmeters menu allows the technician to
check the readings of all unit hourmeters that have
been enabled. In addition, an hours reset feature is
provided to reset the current hours for each user
programmable hourmeter.
This menu allows the operator to perform a series of
built in tests on the HMI Control Panel.
Evacuation Test
Evacuation Test allows a full system evacuation to
be performed. All normally closed valves are
opened to allow the entire system to be completely
evacuated before charging with refrigerant. If
battery voltage falls below acceptable limits, the
operator is prompted to connect a battery charger to
maintain sufficient battery voltage to hold all
necessary valves open during the procedure. If
configured, the ETV will be fully opened.
Gauges
The Gauges menu allows the technician to display
operating information such as coolant level and
temperature, engine RPM, battery amps, battery
volts, and suction and discharge pressure. The I/O
selection under Gauges indicates the output states
as either On or Off.
Sensors
Software Revision
The Sensors menu allows the technician to display
the reading of all unit temperature sensors and the
calculated temperature differential.
The Software Revision menu shows the software
revision of both the HMI Control Panel and the unit
microprocessor.
Alarms
Set Time and Date
The Alarms display allows the technician to display
any existing alarms. The technician can also clear
most alarms from this menu
The Set Time and Date menu allows the system
time and date to be checked and changed as
required.
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31 January 2005