6-9
Sterilizer Operation
Operator Manual
P129394-176
6.9 Prevac Cycles
Prevac cycles,
270°F (132°C),
are used for sterilizing double-
wrapped instrument trays or fabric packs. Prevac cycles, 275°F
(135°C), are used for sterilizing double-wrapped instrument trays
only. Immediate use cycles must not be used with wrapped loads or
fabrics.
1.
Before running this cycle refer to
2.
See instructions for using the loading car/transfer carriage or
rack and shelves, earlier in this section, for procedures to load
the sterilizer.
•
For 270°F (132°C) Cycle, press 270 PREVAC button to start
the prevacuum cycle. Refer to
for descriptions of
cycle use and loading recommendations.
•
For 275°F (135°C) Cycle press 275 PREVAC touch-screen
pad to start the 275°F (135°C) Prevacuum cycle. Refer to
for descriptions of cycle use and loading
recommendations.
NOTE:
If the wrong cycle has been selected, see
3.
Sterilizer automatically progresses through cycle, as follows:
NOTE:
The control display indicates cycle progress in two ways:
a.
Large numerals in the screen’s center display estimated
remaining cycle time,
b.
Change of phase name in the top status line of the screen.
ACTIVATE SEAL – Steam enters the door seal, pressing it
against inside surface of the door.
PURGE – Chamber is purged with steam. Start of Condition is
printed.
VACUUM/PRESSURE PULSES – Differing by temperature rating
for the cycle:
•
270°F (132°C) #1 - #4 – Four vacuum pulses.
•
275°F (135°C) #1 – #3 – Three vacuum pulses.
CHARGE – Chamber is charged with steam. Start of steam
charge is printed.
STERILIZE – Start of sterilize exposure is printed when the
chamber reaches sterilization temperature. Chamber
temperature is printed every minute.
FAST EXHAUST – Start of exhaust is printed and chamber is
exhausted to 4 psig (0.28 bar).
DRY – Start of dry is printed and display counts down dry time
remaining.
AIR BREAK – Chamber is returned to atmospheric pressure.
RETRACT SEAL – A vacuum is drawn on the seal, retracting it
from inner surface of door.
COMPLETE – Complete tone sounds. Cycle summary and end of
cycle messages are printed.
4.
Unload sterilizer (see instructions for using the loading car/
transfer carriage or rack and shelves,
for procedures to remove load).
WARNING – BURN HAZARD:
•
Sterilizer, rack/shelves and
loading equipment will be hot
after cycle is run. Always
wear protective gloves and
apron when removing a
processed load. Protective
gloves and apron must be
worn when reloading
sterilizer following the
previous operation.
•
Steam may be released from
the chamber when door is
opened. Step back from the
sterilizer each time the door
is opened to minimize
contact with steam vapor.
WARNING – SLIPPING
HAZARD: To reduce slippery
conditions, keep floors dry by
immediately wiping up any
spilled liquids or
condensation in sterilizer
loading or unloading area.
WARNING – PERSONAL
INJURY and/or EQUIPMENT
DAMAGE HAZARD: When
closing the chamber door,
keep hands and arms out of
the door opening and make
sure opening is clear of
obstructions.
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