Associated Environmental Systems SD-302, Инструкция по эксплуатации

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INSTALLATION
3-3
INITIAL CHECKOUT
This test chamber has been thoroughly inspected and tested prior to leaving the factory. To
ensure that it is in proper working order after receipt, please perform the following initial
checkout steps:
STEP 1:
Place the Power (Circulation) switch ON and with the door opened, confirm that
there is airflow from the circulation blower.
STEP 2:
a. Set the digital failsafe control to a setting above the desired test
temperature.
b. Close the door and turn the power and heat switches on.
c. Set the primary controller temperature set point at the desired test temperature.
d. Allow the chamber to reach the set point and then wait 15 minutes for the
system to stabilize itself at that temperature.
e. Reset the digital failsafe control at the temperature above the set point
temperature where you want the chamber to go into “safety mode.”
f. Open door, turn heat switch off, let cool down to room ambient.
Close the chamber door and set chamber temperature controller to your desired
high setting. Push heat and cool (mechanical refrigeration) switches on. Confirm
an increase in chamber temperature by observing the digital display. As the
chamber temperature approaches the set point, the Heat pilot light will begin to
flash, indicating proper operation of the temperature control instrument at high
temperatures.
STEP 3:
The power, heat, and cool switches should all be on. Set chamber temperature to
a low temperature. Confirm a decrease in chamber temperature by observing the
digital display. As the chamber temperature approaches the low set temperature,
the cool pilot light will begin to flash indicating proper operation of the
temperature control instrument at low temperatures. Set the chamber temperature
controller to your lowest testing temperature (within chamber specifications.) Let
the unit run to verify proper operation of refrigeration system.
NOTE: As an option some models may be equipped with CO
2
or LN
2
cooling
systems. These systems will have a CO
2
or LN
2
pilot light. On CO
2
or LN
2
models it is important to remove the exhaust port plug, as these systems are high
pressure. Not removing the plug from the exhaust port will cause a dangerous
condition. Make certain exhaust port plug is removed!