(e) Adjust the jacket span potentiometer, R-104, until the meter reads
the reference voltage recorded earlier, + 0.05 volts.
Repeat steps (b) through (e) until both readings are within
(g) Always make the final adjustment or check with the toggle switch in
the zero position.
(h) Remove the RTD test box wire harness plug from connector J9.
Reinstall the pressure transducer wiring harness plug in J9 that was removed earlier.
Leave the 14 pin connector in J1.
b. Calibrate the Chamber Pressure. Pressure will be calibrated by
pressurizing and drawing a vacuum on the chamber while monitoring the absolute
pressure with a Heise meter. Absolute pressure is a measure of pressure that uses
zero as a total vacuum. Atmospheric pressure is approximately 14.7psia at sea level or
12.0psia one mile above sea level. Absolute pressure is noted by the letter "a" as in
psia. Gauge pressure uses the air pressure around us as zero and is shown as psig.
The Heise meter is connected to a chamber pressure line and is placed at the
same level as the connection. The connecting tubing should have a loop in it
to collect any condensate.
(1) Energize the Heise meter. With the door open the Heise meter should
read approximately 12.0psia.
The readings done with the Heise meter are noted for Denver, Colorado (one
mile above sea level). Other locations will be different.
Close the sterilizer door.
Turn the rotary switch on the RTD test box to the Tr position.
Place the auto/manual switch on the control board to the MANUAL
(5) Set manual relay control switch number 6 to the ON position. The SSR
6 led should be on, and the door should be sealed.
(6) Set manual relay control switches numbers 0 and 1 to the ON position.
SSR 0 and SSR 1 leds should be on, and steam should enter the jacket and the