User manual CARRIER INTEGRA 30S SERVICE MANUAL

[. . . ] OPERATION AND SERVICE MANUAL INTEGRA 30S TRUCK REFRIGERATION UNIT BEGINNING WITH S/N PB 225225 TABLE OF CONTENTS PARAGRAPH NUMBER Page GENERAL SAFETY NOTICES . Safety-1 SPECIFIC WARNING AND CAUTION STATEMENTS . 1-3 1. 3. 4 Hot Gas Solenoid Valve (HGS1) . 1-3 1. 3. 5 Condenser Pressure Control Valve (HGS2) . [. . . ] The temperature display is selectable between Fahrenheit and Celsius. Units are configured for Celsius from the factory. To set the display to Fahrenheit, move the Celsius end of the jumper to the Fahrenheit pin as shown in Figure 2-4. THEN THEN Unit start-up Press the +, then -- then DEFROST keys. All keys should be held momentarily after pressing in the correct sequence. below) OR C F NOTE Keys must be pressed before the unit starts. Figure 2-4 Temperature Selection Jumper NOTE The board contains another set of pins similar to the Degrees C/Degrees F selection jumper, marked as J1. This jumper is not used for unit operation, but it is used during the microprocessor controller manufacturing process. The following steps must be performed with the unit OFF: Shut-down unit. THEN OR Hold both keys momentarily in order to display parameters. NOTE If no buttons are depressed within 5 seconds of pressing the ON key or modifying parameters, the Cab Command reverts to box temperature display and the configuration procedure is aborted. The minimum setpoint parameter is displayed. The minimum setpoint can be selected by scrolling through available options [--20°F (--28. 9°C), --4°F (--20°C), 32°F (0°C)] using the (+) or (--) keys. Selection MUST be validated by pressing the SET key. The null mode differential temperature is displayed next. This setting determines the temperature difference between box temperature and setpoint that controls compressor cycling. The differential can be selected by scrolling through available options [1. 8°F (1°C), 3. 6°F (2°C), or 5. 4°F (3°C)] using the (+) or (--) keys. Selection MUST be validated by pressing the SET key. The ON/OFF (Continuous airflow) parameter for the evaporator fan is displayed next. This feature determines whether the evaporator fan is on or off when the unit cycles off upon reaching setpoint. Change setting by using the (+) or (--) keys. Selection MUST be validated by pressing the SET key. [. . . ] Should a problem develop with these components, contact your nearest Carrier Transicold dealer for replacement. CAUTION Observe proper polarity when installing battery, negative battery terminal must be grounded. CAUTION Under no circumstances should a technician electrically probe the processor at any point, other than the connector terminals where the harness attaches. Microprocessor components operate at different voltage levels and at extremely low current levels. Improper use of voltmeters, jumper wires, continuity testers, etc. could permanently damage the processor. CAUTION Most electronic components are susceptible to damage caused by electrical static discharge (ESD). [. . . ]