6-25
Sterilizer Operation
Operating Instructions
129373-496
NOTE: If LEAK TEST is pressed while the chamber door is open, a display
screen will appear directing the operator to close door before continuing cycle
operation. Operator must reselect LEAK TEST after the door is closed.
NOTE: If a cycle is started when the sterilizer has not been fully calibrated,
a display screen will appear indicating that the control is not calibrated.
Sterilizer must be calibrated by a qualified service technician before
processing loads.
5. Sterilizer automatically progresses through the following cycle phases.
NOTE: If an alarm occurs during cycle operation, refer to
S
ECTION
12,
T
ROUBLESHOOTING
, for instructions on correcting the alarm condition.
NOTE: If power is lost during cycle operation, cycle either continues in same
phase or aborts if seal pressure is below 5 psig (0.34 Pbar) once power is
restored.
• Jacket Charge
– Jacket charges with steam to 131°C (268°F).
• Activate Seal
– Door seal fills with steam and expands against the
sterilizer door opening, forming an air-tight seal.
• Purge
– Steam flows through the chamber for 1 minute.
NOTE: The projected cycle completion time shown on the display is
estimated. The control automatically evaluates the cycle progress and
corrects the estimated time at the beginning of each phase.
NOTE: Current time, chamber pressure and chamber temperature are printed
at each transition point.
• Vacuum Pulse #1 Exhaust
– Chamber is exhausted to 4 psig (0.28 Pbar).
• Vacuum Pulse #1 Evacuate
– A vacuum is drawn in the chamber to
10 inHg (0.34 Vbar).
• Charge Pulse #1
– Chamber charges with steam up to 26 psig (1.8 Pbar).
• Vacuum Pulse #2 Exhaust
– Chamber is exhausted to 4 psig (0.28 Pbar).
• Vacuum Pulse #2 Evacuate
– A vacuum is drawn in the chamber to
10 inHg (0.34 Vbar).
• Charge Pulse #2
– Chamber charges with steam up to 26 psig (1.8 Pbar).
• Charge
– After the last prevacuum pulse, chamber charges with steam to
132°C (270°F).
• Evacuate
– Chamber exhausts and a vacuum is drawn in the chamber for
10 minutes.
• Stabilize
– The chamber stabilizes for 2 minutes. This phase ensures a
constant vacuum level after the vacuum system has been turned off.
• Leak Test
– The chamber remains idle for 10 minutes. On completion of
phase, control calculates the leak rate based on the initial and final
pressure readings taken during the 10-minute period.
• Air Break
– Filtered air enters the chamber to relieve the vacuum within the
chamber.
• Retract Seal
– Steam is exhausted from the door seal.
