Unit Description
27
Structural:
Visually inspect the unit for leaks,
loose or broken parts and other damage. The
condenser and evaporator coils should be clean
and free of debris. Check the defrost drain hoses
and fittings to be sure they are open. The damper
in the evaporator outlet must move freely with no
sticking or binding. Make sure all the doors are
latched securely.
ThermoGuard
µ
P-T Smart
Reefer
TM
(SR) Microprocessor
The
µ
P-T controller is a programmable
microprocessor that controls all unit functions to
maintain the cargo at the proper temperature. The
µ
P-T controller continuously monitors unit
operational information including:
•
Return Air
•
Discharge Air
•
Coil Temperature Sensors
•
Unit Hourmeters
•
Oil Pressure Gauge
•
Water Temperature Gauge
•
Voltmeter
•
Tachometer
•
Mode Indicators
•
Temperature Control System Controls.
NOTE: See the ThermoGuard
µ
P-T
Microprocessor Controller Diagnosis Manual,
for complete operation and diagnosis
information.
Displaying Operating Data
Unit operational information appears on display
screen. During normal operation, the Standard
Display appears on the screen. The Standard
Display is the return air temperature (upper
display) and setpoint temperature (lower display).
Check the icons that appear on the display. These
icons identify the operating information that
currently appears.
A control panel allows the operator to select
information to display and program unit features
including. If no key is pressed for about
10 seconds, the display will return to the Standard
Display.
Entering Setpoint Temperature
The setpoint temperature of the unit can be easily
changed. To adjust the setpoint:
1. With the Standard Display on the control
panel, press the
U
P
or
D
OWN
A
RROW
key until
the desired setpoint temperature shows in the
lower display.
2. When the correct setpoint shows in the lower
display, press the
E
NTER
key to load the new
setpoint in the controller memory.
a. [Lod] (abbreviation for LOAD) will
appear in the lower display for a few
seconds.
b. The new setpoint will then appear.
c. If the
E
NTER
key is not pressed, the setpoint
will not change and the display will return
to the standard display in about
10 seconds.
WARNING: The unit may START
automatically AT ANY TIME when the
CYCLE-SENTRY icon is visible in the
controller display. Make sure to press the
O
FF
key before opening unit doors or
inspecting any part of the unit.
CAUTION: The Microprocessor On/Off
switch located on the unit frame below the
unit control panel MUST be in the Off
position before disconnecting or
connecting the unit battery.
Summary of Contents for 919180
Page 4: ...4...
Page 10: ...Table of Contents 10...
Page 32: ...Unit Description 32 Unit Photographs Figure 3 Front View Figure 4 Back View AJA584 AJA585...
Page 33: ...Unit Description 33 Figure 5 Left Side View Figure 6 Right Side View AJA586 AJA58...
Page 35: ...Unit Description 35 Figure 8 North American Power Receptacle Box AJA58...
Page 38: ...Unit Description 38...
Page 58: ...Electrical Maintenance 58...
Page 66: ...Engine Maintenance 66 Figure 37 Fuel and Oil System Components...
Page 84: ...Engine Maintenance 84...
Page 96: ...Refrigeration Maintenance 96...
Page 118: ...Hilliard Clutch Maintenance 118...
Page 136: ...Cycle Diagrams 136...
Page 140: ...Wiring and Schematic Diagrams Index 140...
Page 141: ...141 Truck S Model SR 30 Schematic Diagram Page 1 of 2...
Page 142: ...142 Truck S Model SR 30 Schematic Diagram Page 2 of 2...
Page 143: ...143 Truck S Model 30 Units with P T Wiring Diagram Page 1 of 2...
Page 144: ...144 Truck S Model 30 Units with P T Wiring Diagram Page 2 of 2...
Page 145: ...145 Truck S Model 50 Schematic Diagram Page 1 of 2...
Page 146: ...146 Truck S Model 50 Schematic Diagram Page 2 of 2...
Page 147: ...147 Truck S Model 50 Units with P T Wiring Diagram Page 1 of 2...
Page 148: ...148 Truck S Model 50 Units with P T Wiring Diagram Page 2 of 2...