Section 4 – SR-2 Operation
Pretrip Test Considerations
When performing a Pretrip Test, the following issues should be considered.
• If running a Pretrip Test on a trailer loaded with dry cargo, insure that proper airflow can occur around the
load. If the load restricts airflow, false test results may occur. Also, SR-2 units have high refrigeration
capacity which results in rapid temperature changes. Sensitive dry cargo may be damaged as a result.
• If running a Pretrip Test on a trailer that has just been washed down, the extremely high humidity inside
the trailer may result in false test results.
• If running a Pretrip Test on a trailer loaded with sensitive cargo, monitor the load temperature during the
test as normal temperature control is suspended during pre-trip operation.
• Always perform Pretrip Tests with the trailer cargo doors closed to prevent false test failures.
Performing a Pretrip Test
If a Pretrip Test is initiated with the engine shut down a Full Pretrip Test will be performed. If a Pretrip Test is
initiated with the engine or motor running a Running Pretrip Test is performed.
• Before initiating a Pretrip Test, clear all alarm codes.
• To stop a Pretrip Test at any time turn the unit off.
Pretrip Tests are initiated using the Pretrip Menu. From the Standard Display, press the MENU key.
OFF
ON
35
°F
35
CYCLE SENTRY
.8
MENUSET SENSORSGAUGES
POINT
The Language Menu or Alarm Menu will appear. Press the NEXT key as required to show the Pretrip Menu.
When the Pretrip Menu is shown press the SELECT key to start a Pretrip Test.
OFF
ON
MAIN MENU
PRETRIP
NEXTEXIT BACKSELECT
4-47
31 January 2005
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