6-15
Sterilizer Operation Operator Manual 129390199
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.
1. Before running this cycle refer to S
ECTION 6.1, BEFORE OPERATING
THE STERILIZER, on PAGE 6-1.
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 Prevac button to start the
prevacuum cycle. Refer to Table 6-1 and Table 6-6 for
descriptions of cycle use and loading recommendations.
• For 275°F (135°C) Cycle press MORE CYLES touch screen
pad, then press PREVAC touch-screen pad to start the
275°F (135°C) Prevacuum cycle. Refer to Table 6-1 and
Table 6-6 for descriptions of cycle use and loading
recommendations.
NOTE: If the wrong cycle has been selected, see S
ECTION
6.15, ABORTING CYCLES, on PAGE 6-36 in this section.
3. Sterilizer automatically progresses through cycle, as follows:
NOTE: The control display indicates cycle progress in three
ways:
a. The large numerals in the screen’s center display estimated
remaining cycle time,
b. A status bar below the large numerals indicates approximate
cycle progress,
c. Screen background color changes as cycle progresses:
green indicating beginning (Condition), blue indicating middle
(Sterilize) and violet indicating end of cycle (Exhaust).
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
• 270°F (132°C) #1 - #7 – Three vacuum pulses (drawing from
2 inHg to 24 inHg) are followed by three pressure pulses
(0.2 psig to 15 psig).
• 275°F (135°C) #1 – #3 – Vacuum point is printed and
pressure/vacuum pulse is repeated.
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).
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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