Steris AMSCO 400 Series, Operator'S Manual

Page: 79 / 174

6-19
Sterilizer Operation Operator Manual P129394-020
6.11 Liquid Cycle
This cycle is used for sterilizing liquids in vented closures.
1. Refer to S
ECTION
6.1, B
EFORE
O
PERATING THE
S
TERILIZER
,
ON
PAGE
6-1 before running this cycle.
2. See instructions for using the loading car/transfer carriage or
rack and shelves, earlier in this section, for procedures to load
the sterilizer.
3. Press LIQUID touch-screen pad to start the Liquid cycle. Refer
to Table 6-3 for descriptions of cycle use.
NOTE: If the wrong cycle has been selected, see S
ECTION
6.15,
A
BORTING
C
YCLES
,
ON PAGE
6-31 in this section.
4. 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.Countdown timer on the display is estimated; timer self-
corrects estimated time at the beginning of each phase.
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 five minutes.
SLOW EXHAUST – Start of exhaust is printed and chamber is
exhausted to 0 psig.
SLOW EVACUATE – A vacuum is slowly drawn in the chamber to
5.0 inHg. This phase assures that the chamber is cooled to
208°F/95°C.
VAPOR REMOVAL – Filtered air enters the chamber at the same
time a vacuum is drawn to cool the load. Chamber pressure is
maintained between 1 and 5 inHg. Phase continues for
10 minutes.
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.
5. Unload sterilizer:
• Allow bottles to cool before removing them from
chamber.
• See instructions for using the loading car/transfer carriage or
rack and shelves, earlier in this section for procedures to
remove load.
WARNING – EXPLOSION
HAZARD: This sterilizer is not
designed to process
flammable compounds.
WARNING – PERSONAL
INJURY HAZARD: Avoid
personal injury from bursting
bottles. Liquid sterilization
cycle must only be used for
liquids in borosilicate (Pyrex)
flasks with vented closures.
WARNING: The liquid
cycle is for non-patient
contact use only.
WARNING – BURN
HAZARD: When sterilizing
liquids, you must observe
the following procedures:
• Use Liquid cycle only.
• Use only vented
closures.
• Use only Type I
borosilicate glass
bottles.
• Processed bottles are hot
following liquid cycle and
may boil over. Always
wear appropriate PPE
including thermal gloves
and goggles when
removing processed
bottles from chamber.
Do
not allow hot bottles to be
jolted.
• 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.
CAUTION – POSSIBLE
EQUIPMENT DAMAGE
HAZARD: Sterilization of
chloride-containing
solutions (e.g., saline) can
cause chamber corrosion
and is not recommended
by the manufacturer. If,
however, chloride-
containing solutions must
be processed, clean the
chamber after each use.
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