Carrier 69NT40-511-199 manual Addition, this test is skipped if, Addition, the test will fail if

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DESCRIPTION

NOTE

Starting with test P7-0 through test P10, these tests are only included with the “Auto2” (Optional) selection menu. (Refer to section 3.2.1.)

		Setup: When the unit is running, the condenser fan is de-energized, and a 15
		minute timer is started. The right display shows discharge pressure if equipped
		with the discharge pressure transducer (DPT), or condenser pressure if
		equipped with a condenser pressure transducer (CPT), or discharge pressure if
		equipped with either a discharge pressure transducer (DPT) or a condenser
		pressure transducer (CPT).
		Pass/Fail Criteria: The test fails if high pressure switch fails to open in 900
		seconds.
		Note, this test is skipped if the unit does NOT have:
		S A compressor discharge sensor (CPDS).
		S A discharge pressure transducer (DPT).
		S Condenser pressure transducer (CPT).
		In addition, this test is skipped if:
		S The sensed ambient temperature is less than 7_C (45_F).
		S The return air temperature is less than -17.8_C (0_F).
		S The water pressure switch (WP) is open, indicating that the unit is
P7-0	High Pressure	operating with a water-cooled condenser.
	Switch Closed	Pass/Fail Criteria: Under conditions of the above Note, the test immediately
		fails if the following inputs are sensed to be invalid:
		S Compressor discharge sensor (CPDS).
		S Discharge pressure transducer (DPT).
		S Condenser pressure transducer (CPT).
		OR if any one of the following inputs are sensed to be invalid:
		S Return temperature sensor (RTS).
		S Ambient sensor (AMBS).
		In addition, the test will fail if:
		S The high pressure switch (HPS) fails to open within 15 minutes.
		S The discharge temperature exceeds 138_C (280_F).
		S The discharge temperature is less than or equal to ambient temperature
		plus 5_C (9_F).
		S The condenser pressure transducer (CPT) or discharge pressure
		transducer (DPT) pressure exceeds 27.42 kg/cm2 (390 psig).
		Requirements: Test P7-0 must pass for this test to execute. Setup: The
P7-1	High Pressure	condenser fan is started and a 60 second timer is started.
	Switch Open	Pass/Fail Criteria: Passes the test if the high pressure switch (HPS) closes
		within the 60 second time limit, otherwise, it fails.
		Setup: If the container temperature is below 60_F, the set point is changed to
		60_F, and a 60 minute timer is started. The left display will read “P8-0.” The
P8-0	Perishable Mode	control will then heat the container until 60_F is reached. If the container
		temperature is above 60_F at the start of the test, then the test proceeds
	Heat Test
		immediately to test P8-1 and the left display will change to “P8-1.”
		Pass/Fail Criteria: The test fails if the 180 minute timer expires before the
		control temperature reaches set point. The display will read “P8--0,” “FAIL.”

T-268-07 3-22