62-110393-7
PRETRIP (Continued)
NOTE
Pretrip will run until completed, unless an alarm occurs
that causes Pretrip to be aborted. Only alarms that will
result in other erroneous alarms or will affect future
Pretrip tests will allow Pretrip to be aborted.
TIP
Pretrip may be stopped by the user by either
turning the unit off then back on again, or by
pressing and holding the = Key for 5 seconds.
“PRETRIP STOPPED BY USER” will appear in
the MessageCenter.
Once Pretrip is started: If the unit is running, the
microprocessor will shut the unit down by de-energizing
the fuel solenoid.
If the unit is not running Pretrip will begin.
NOTE
Before beginning Test 1, PreTrip looks at the
status of alarms and if certain alarms are active
(for example: Low Fuel Warning, Check Engine
Oil Level, Check Coolant Level, Check Coolant
Temperature, PreTrip will show “FAILED”, indi-
cating that the unit is not ready to be sent out for
a load, but that the alarm list should be checked
and all present alarm situations corrected.
TIP
It is always a good idea to clear all alarms from
both Alarm Lists before starting Pretrip. The
technician will then know that any alarms pres-
ent following Pretrip occurred during Pretrip,
and are not old alarms that had not been
cleared.
NOTE
The operator MUST be present and validate
this test by watching the microprocessor dis-
play during Test 1 -- Display Test. The micropro-
cessor will turn on all segments of the LCD and
LED display.
Test 1 -- Display And Sound Test
The microprocessor activates the LCD/LED display,
and all lights on the Light Bar. This test will last 5
seconds. All segments of the display, all LEDs on the
microprocessor, all lights of the Light Bar, and the
buzzer will be on during this test. This is the only portion
of the Pretrip check that requires the operator to
determine PASS or FAIL. A defective display and sound
test is indicated if: any LCD/LED segments are not
visible, any LEDs or lights do not come on, or the buzzer
does not sound. Anything that fails during this test
should be repaired at the conclusion of the Pretrip cycle.
Pretrip will continue regardless of the outcome of this
test. A faulty display, light bar or buzzer will not affect the
operation of the unit, but will affect what is displayed
during unit operation.
Test 2 -- Amperage Check of 12VDC Electrical
Components
Check the amperage (current) draw of the following
components:
• Battery DC Current
(All Components Turned Off)
• UL1 Front Unloader
• UL2 Rear Unloader
• Speed Solenoid
• Glow Plugs
• Fuel Solenoid
• CDCON
• CCON
• GENCON
• HTCON1
• HTCON2
• 2HTCON1
• 2HTCON2
• 3HTCON1*
• 3HTCON2*
• EVCON
• 2EVCON
• 3EVCON*
• 2LSV
• 3LSV*
NOTE
*Will run test if 3 compartment model is se-
lected.
Each component individually will be individually
checked for proper current draw. An alarm will be
displayed for any component testing outside the current
range (amps).
Test 3 -- Refrigeration System Equalization Check
With the engine and the unit off, the CSMV will open to
50% and the EVXV will open to 100% so that the
pressure in the refrigeration system can equalize. If the
pressure does not equalize to within 80 psig (5.4 Bar)
ALARM P171 -- Check Evap & Disc Press-- will be
activated.
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