Thermo King CRR-40 119, Manual

Page: 78 / 170

MP-3000a Controller
78
Full 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 Full
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 2 to 2.5 hours to complete,
depending on the container and ambient
temperature.
NOTE: Correct all existing alarm conditions
and clear the alarm codes before performing a
Full PTI test. The controller will automatically
clear all existing alarms before beginning the
Full 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 PTI Test.
4. Press F4 key to start the Full PTI Test. LCD
display shows PTI Test currently being
performed. PTI test ends automatically. Press
any key on the controller to return the unit to
normal operation.
See “CRR Full Pretrip (PTI) Test Procedure”
below for a detailed description of the Full PTI
Test. Detailed Full 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 Full PTI test should only
be performed on an empty container.