Sanyo MDF-C8V service manual Trial Operation, Calibration, temperature

TRIAL OPERATION

Following is the procedures for the trial operation of the back-up system. Read an instruction manual enclosed with a ultra-low temperature freezer carefully before the trial operation.

1.Check that the gas cylinder connect pipe is connected properly between the LCO2 solenoid valve and the gas cylinder. The connection should be done by qualified engineers or service personnel only.

2.Set the ultra-low temperature freezer at desired temperature and run the freezer until it reaches the set temperature.

Note: CO2 gas will be released automatically without pressing the test switch when turn on the back-up system if the set temperature of the freezer is higher than that of the back-up

temperature.

3.Set the temperature setting knob to the temperature 10oC or more higher than the set temperature of the freezer.

4.Turn on the back-up system with the freezer door closed. Check that the indicator on the door switch ass’y is on.

5.Press the test switch to check that the CO2 gas is released into the freezer chamber.

Stop the operation immediately and contact your dealer or sales representative if there is something wrong with the back-up system during the trial operation and it is still existing after careful check of the procedure.

WARNING

Check the gas piping before trial operation to avoid gas leakage.

Attach the back-up unit cover before starting the trial operation. The operation without the cover

may cause electric shock.

CAUTION

Stop the operation immediately and review the attachment procedure carefully if there is something wrong with the back-up system during the trial operation.

Calibration

In the case that there is a difference between the chamber temperature and displayed temperature, Adjust the displayed temperature by the method of the service technical manual.

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