INSTRUCTIONS FOR USING MODEL L

(RS 16 AUGUST 76)

1) Turn the power switch on. When the power switch is turned on, the left pilot light comes to full brilliancy.

2) Make sure the right control knob is turned completely counter-clockwise.

3) Turn the vacuum pump switch on. When the vacuum pump switch is turned on, the right pilot light comes to half brilliancy.

4) Close the vacuum chamber door by turning the left control knob to the extreme clockwise position.

5) Close the air valve by turning the right control knob to the extreme clockwise position. After 5 to 10 seconds of evacuation the right hand pilot light will come to full brilliancy, indicating that the sliding door has compressed the O-ring and produced a vacuum seal (i.e. there is no vacuum gauge).

6) Turn the refrigeration switch on.

To adjust the temperature setting:

Lift the top of the instrument and notice a gauge on the right hand side. The red scale indicates the temperature of the refrigeration coil in °F; the black indicates the pressure of refrigerant in psi.

Remove the brass seal cap from the refrigeration control and locate the adjusting screw. To reduce the temperature, turn counterclockwise. If the refrigeration has just started the needle will respond quickly. However, if the refrigeration has been running, the needle will lag somewhat when a higher temperature is selected. To set the temperature, set pointer on red scale 15° below the desired temperature.

TO PREVENT LEAKAGE OF FREON, replace the brass seal cap after temperature adjustment.

7) After 30 minutes, or when set temperature has been reached, open the air valve by turning the right hand control knob counterclockwise.

8) Open chamber door by turning left hand control knob counterclockwise.

9) Place the rotor on the drive shaft with the pins on the rotor 90° around from the pins on the hub.

NOTE: For swinging bucket rotors see instructions on page 41 of the manual.

10) Close the chamber and close the air valve.

11) Set timer, brake, and rpm selectors to desired positions.

12) Push the start button. At the end of the run do not change speed setting during deceleration as this will change rate of braking.

(OVER)