Adjusting The Vacuum Switch
1. Insert the AutoTest board. Start the leak test menu. The display
should read as follows:
LEAK TEST W/START
NEXT W/ LONG CANCEL
2. Plug the probes of a DVM into J63 connector (vacuum switch) with
the chamber at atmospheric pressure. The voltage should be low (1
VDC).
3. With the chamber door closed, press START (this starts the pump)
and time the signal change with a stop watch or similar timer.
4. Observe the DVM and when the signal goes high, stop the timer. The
time for the voltage to go high (5.0V DC) should be between 10 and
28 seconds.
5. If the time is not between 10 and 28 seconds (preferably 20 seconds),
loosen the locking collar on the body of the vacuum switch.
6. Rotate the switch (slowly) clockwise to increase the time, rotate the
switch counterclockwise to decrease the time. DO NOT rotate the
switch insert body.
7. Perform steps 3-6 after each rotation until the time interval is correct.
Perform the final measurement with the locking collar tight.
8. For Block 2 systems, continue on to the Vacuum Switch test
procedures below and in the AutoTest Appendix.
4
4
Note:
Ensure the sterilizer is in the idle state. There should be
no vacuum in the chamber.
Vacuum Switch Test- Block 2
1. On the vacuum switch use a fine pointed object to press the SET
button. The LCD displays P1=xx, where xx is the value of P1. Use
the up and down keys to set P1=0. Press the SET button again and
the LCD displays the value of P2. Repeat the above procedure to set
P2 through P4 to 0.
2. When P1 through P4 are all set to 0, the vacuum switch should be
detecting atmosphere, and it beeps to indicate this. 0 is displayed
and the red/green LEDs turn OFF.
Vacuum Subsystem
Vacuum Subsystem Calibration
4-6
STERRAD® 100 Sterilizer
ASP Service Guide rev. D
Содержание STERRAD 100
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