Thermo King SLXi Spectrum, Maintenance Manual

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Operating Instructions 6-16
NOTE: Zone specific alarm codes use the standard Thermo King alarm code numbers. If an alarm is specific to a zone then
both the alarm code number and affected zone number are displayed.
NOTE: If the large alarm icon only appears, then the active alarm(s) are unit level alarm(s). If a zone alarm icon and the
large alarm icon are displayed there is a zone level alarm or a combination of zone level and unit level alarms present.
Temperature Watch Display
If there is no key activity and no check, prevent, or shutdown alarms are present the Temperature Watch Display appears 2-1/
2 minutes after the last key entry from the Standard Display. The Temperature Watch screen will remain on until any key is
pressed or a check, prevent, or shutdown alarm occurs. The Temperature Watch Display shows the return air temperature and
setpoint for each zone. Tenths of a degree are not shown by the Temperature Watch display. The large numbers allow unit
conditions to be checked from a distance.
A Two Zone Temperature Watch Display is shown in Figure . The box temperature for Zone 1 is -22 C with a -23 C setpoint.
The down-pointing arrow indicates that Zone 1 is cooling. The box temperature for Zone 2 is -2 C with a -2 C setpoint. The
down-pointing arrow indicates that Zone 2 is also cooling. Pressing any soft key returns the display to the Standard Display.
Two Zone Temperature Watch Display
If an alarm condition (other than a log alarm) is present the Temperature Watch Display will not appear. If an alarm condition
occurs while the Temperature Watch Display is present the display will return to the Standard Display. If the Defrost or Cycle
Sentry keys are pressed the display will return to the Temperature Watch Display after defrost is initiated or the operating mode
is changed.
In the Three Zone Temperature Watch Display the Menu soft key label covers the Zone 3 label as shown below.
If the unit is operating in Cycle-Sentry Mode, the Cycle-Sentry icon will appear near Zone 2 as shown below. If the unit is
operating in Continuous Mode the Cycle-Sentry icon will not be present.
Other Unit Controls
MICROPROCESSOR ON/OFF Switch (MTMT µP-IV and µP-V controllers; µP-VI controllers with datalogger option
only and SR-2/SR-3 controllers).
This switch energises the microprocessor.
The switch is located inside the control box or on the front panel between thr CargoWatch Printer ports (earlier SR-2) or in
the engine compartment (later SR-2 and SR-3).
Place this switch in the OFF position to service the microprocessor or to disconnect or connect the battery. The clock/calendar
must be reset whenever this switch is turned OFF.
NOTE: On early µP-VI controllers, disconnect jumper J13 on the relay board in the control box to service the microprocessor
or disconnect or connect the battery.
DEFROST TERMINATION .
Units equipped with a SR-2 or SR-3 controller, defrost initiation and termination are controlled
by an evaporator coil sensor and the controller.
THROTTLING VALVE.
This valve is located in the suction line and limits the suction pressure at the compressor. See
“Refrigeration Systems” in the Specifications chapter for normal pressure setting for your specific unit.
Three Zone Temperature Watch Display
1. Cycle-Sentry Icon
2.
Menu Soft Key Label
1
2