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MP-3000a Controller
74
Brief Pretrip (PTI) Test
NOTE: Units equipped with a water-cooled
condenser must be set to operate on air-cooled
condensing to perform a complete system
capacity test.
The MP-3000a controller contains a special Brief
PTI pretrip test that automatically checks unit
refrigeration capacity, heating capacity,
temperature control, and individual components
including the controller display, contactors, fans,
protection devices and sensors. The test includes
measurement of component power consumption
and compares test results to expected values. The
test takes about 25 minutes to complete,
depending on the container and ambient
temperature.
NOTE: Correct all existing alarm conditions
and clear the alarm codes before performing a
Brief PTI test. The controller will automatically
clear all existing alarms before beginning the
Brief PTI test.
With the unit On/Off switch ON and the LCD
display showing the standard display (setpoint):
1. Press F3 key to enter the menu list.
Repeatedly press F2 key to scroll through
Main Menu until “COMMANDS” appears in
LCD display.
2. Press F4 key to access the Commands menu.
The first command in the submenu appears in
the LCD display.
3. Press F2 or F3 key to scroll to Brief PTI Test.
4. Press F4 key to start the Brief PTI Test. LCD
display shows Brief PTI Test currently being
performed. Brief PTI test ends automatically.
Press any key on the controller to return the
unit to normal operation.
See “CRR Brief Pretrip (PTI) Test Procedure”
below for a detailed description of the Brief PTI
Test. Detailed Brief PTI test results are stored in
the MP-3000a Datalogger for later viewing. Any
alarm codes recorded during the test can be
viewed through the controller’s Alarm List menu
at the end of the test.
CAUTION: The Brief PTI test should only
be performed on an empty container.
Summary of Contents for CRR-40 119
Page 4: ......
Page 16: ...Safety Precautions 16...
Page 18: ...Service Guide 18...
Page 20: ...Model Features 20...
Page 32: ...Specifications 32...
Page 120: ...MP 3000a Controller 120...
Page 160: ...Wiring and Schematic Diagrams Index 160...
Page 161: ...161 MPC2000 Wiring Schematic...
Page 162: ...162 MPC2000 High Voltage Wiring Diagram...
Page 163: ...163 MPC2000 Low Voltage Wiring Diagram...
Page 164: ...164 MPC2000 WCC Wiring Schematic...