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Operating Instructions
71
Brief PTI (Pretrip) 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 25-30 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
U
NIT
O
N
/O
FF
switch
O
N
and the LCD
display showing the standard display (setpoint):
1. Press the
F2
or
F3
key to enter the menu list.
Repeatedly press the
F2
or
F3
key to scroll
through Main menu until [COMMANDS]
appears in LCD display.
2. Press the
F4
key to access the Commands
menu. The first command in the submenu
appears in the LCD display.
3. Press the
F2
or
F3
key to scroll to [Brief PTI
TEST].
4. Press the
F4
key to start the Brief 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 the following [MAGNUM Brief Pretrip (PTI)
Test Procedure] for a detailed description of the
PTI Test. Detailed 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.
Figure 40: Brief PTI Test
CAUTION: The Brief PTI test should
only be performed on an empty container!
Commands Menu
- PTI Test
- Power Management
- Function Test
- Manual Function Test
- Brief PTI Test
ALARMS
DATA
RMM STATE
CONFIGURATION
MISC FUNCTIONS
COMMANDS
MAIN MENU
DATALOGGER
NOTE: All screens are NOT
present on all units. The
screens that display on the
controller are determined by
the Controller Software
settings and the options
installed on the unit.
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