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TITLE

DESCRIPTION

 

 

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Requirements: Control temperature must be at least 60_F.

 

 

 

 

Setup: The set point is changed to 32_F, and a 180 minute timer is started. The

 

 

P8-1

Perishable Mode

left display will read “P8-1,” the right display will show the supply air temperature.

 

 

The unit will then start to pull down the container temperature to the 32_F set

 

 

Pull Down Test

 

 

 

point.

 

 

 

 

 

 

 

 

Pass/Fail Criteria: The test passes if the container temperature reaches set

 

 

 

 

point before the 180 minute timer expires.

 

 

 

 

Requirements: Test P8-1 must pass for this test to execute.

 

 

 

 

Setup: The left display will read “P8-2,” and the right display will show the supply

 

 

 

 

air temperature. A 60 minute timer is started. The unit will be required to

 

 

 

 

maintain the 32_F temperature to within + or -- 0.5_C (0.9_F) of set point until a

 

 

 

 

DataCORDER recording is executed. The recorder supply probe temperature

 

 

 

 

running total (and its associated readings counter) will be zeroed out for the

 

 

 

Perishable Mode

remainder of the recording period at the start of this test, so that the actual value

 

 

P8-2

Maintain

recorded in the DataCORDER will be an average of only this test’s results. Once

 

 

 

Temperature Test

a recording interval is complete, the average recorder supply temperature will be

 

 

 

 

recorded in the DataCORDER, as well as stored in memory for use in applying

 

 

 

 

the test pass/fail criteria.

 

 

 

 

Pass/Fail Criteria: If the recorded temperature is within +/-- 0.5_C. of set point

 

 

 

 

from test start to DataCORDER recording, the test passes. If the average

 

 

 

 

temperature is outside of the tolerance range at the DataCORDER recording, the

 

 

 

 

test fails.

 

 

 

 

 

 

 

 

 

Setup: The defrost temperature sensor (DTS) temperature will be displayed on

 

 

 

 

the left display. The right display will show the supply air temperature. The unit

 

 

 

 

will run FULL COOL for 30 minutes maximum while the DTS sensor temperature

 

 

 

 

is above 10_C. Once the DTS is below 10_C, the unit simulates defrost by

 

 

 

 

running the heaters for up to two hours, or until the DTS senses the temperature

 

 

P9-0

Defrost Test

above 25.6_C.

 

 

Pass/Fail Criteria: The test passes if DTS is sensed above 25.6_C before a two

 

 

 

 

 

 

 

 

hour timer times out. The test fails if DTS does not go below 10_C after 30

 

 

 

 

minutes of full cooling, and/or the heater termination thermostat (HTT) is open

 

 

 

 

when the DTS is below 10_C. The test also fails if the HTT opens anytime during

 

 

 

 

the defrost cycle and/or the return air temperature exceeds 120_F anytime

 

 

 

 

during the heat cycle.

 

 

 

 

3

 

 

Setup: After completion of the DTS test, the set point will be set to 7_C (45_F).

 

P10-0

Frozen Mode

 

SECTION

when the container temperature reaches set point, or if the container

 

 

 

The left display will read “P100,” and if the container temperature is below 45_F,

 

 

 

 

will continue this display until the container temperature is raised to set point.

 

 

 

 

The left display will change to “P101” and execute the frozen pull down test

 

 

 

(Setup) Test

temperature initially was greater than or equal to set point. The maximum time

 

 

 

 

allowed in heat mode is one hour.

 

 

 

 

Pass/Fail Criteria: If this time limit is exceeded, the test fails. There will be no

 

 

 

 

pass indication for this test. However, if the test fails the display will read “P100,”

 

 

 

 

“FAIL.”

 

 

3-23

T-268-07

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Carrier 69NT40-511-199, 69NT40-521 manual Fail