2.6.4
Controls
Where a unit is scheduled or specified to have automatic microprocessor
type controls, the controls shall consist of a selectively programmable
microcomputer that monitors and controls the system operations and
functions. It shall be possible to energize the entire system by a single
switch. If chamber temperature should fail to reach or fall 1 degree C 2
degrees F below the set value, timer will reset. Automatic controls shall
include the following associated instrumentation:
a. Automatic data collection system, digital type, consisting of a
printer-recorder, able to print at least 20 characters per line on a
recording tape, and recording tape storage unit. During processing,
printer-recorder shall document that all parameters of the cycle were met,
or provide a record of the microcomputer's fault indicators and self
diagnostics. The record shall be removable from the machine at the end of
the cycle and shall provide space for the operator's signature and notation
of sterilizer identification number. System shall include alarms and a
programmable clock that displays time and date (day, month, year). The
sterilizer shall be supplied with at least three rolls of printer paper and
two ink supplies (either cartridges or ribbons, as appropriate).
b. Status indicator to indicate each cycle phase. Indicator shall
visually alert if door is unlocked and shall visually and/or audibly alert
if sterilizer does not reach set temperature or drops below set temperature
during sterilizing phase. On two-door-model sterilizers, the remote door
end shall include phase indicators, information for previous cycle
parameters and cycle start/stop control.
c. Processing time indicator in the form of a digital display that
shows sterilizing time.
d. Cycle selector to program and actuate each cycle individually.
Selected cycle shall be visually displayed and all others shall be locked
out.
e. Time setting switches to accurately set individual cycle times.
Once cycle has started, times cannot be changed unless reset/abort switches
are actuated and completed, or regular cycle is completed. Visual display
of time setting shall be provided.
f.
Cycle monitor device, nonresetable, to count each cycle.
g. Main power and control switch to energize and de-energize main
power and controls.
h.
Reset/abort switch to stop cycle.
i. Battery backup or battery backup system to hold cycle parameters
for a minimum of 60 seconds in event of power failure.
2.6.5
Chamber Evacuation System
Sterilizers may utilize a vacuum system consisting of a condenser water
ejector in lieu of a vacuum pump.
2.6.6
Connections to Equipment
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SECTION 11710
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