FVA/A1 STERILIZERS

FVA/A1 - OPERATION AND
MAINTENANCE MANUAL
When electric power returns, an acoustic alarm is issued and the operator must recognize the emergency state by acting
on the mute icon of the touch-screen;
The operator must then leave the emergency state by acting on the STOP icon of the touch-screen;
The sterilizer is thus brought to the atmospheric pressure balancing phase.
If the sterilizer was not in a phase of an operating cycle:
when electric power returns, the Fedegari logo is displayed while waiting for commands from the operator.
The sterilization chamber is provided with a pneumatic gasket for sealing the lid and with associated devices for ensuring the
tightness of the chamber even if there is no electric or pneumatic power.
In particular, depressurization of the pneumatic gasket of the door takes longer than the depressurization of the chamber.
Atmospheric pressure in the chamber, caused by failure of the tightness of the gasket as a consequence of a blackout, is reached
after at least 20 hours, depending on the overall maintenance level of the machine.
2.8.2. FAILURE OF WATER SUPPLY
In order to ensure that the steam generator is supplied with pressurized water at 1 to 4 bars, the sterilizer is provided with a selfpriming
pump, which is capable of drawing water from any container located outside the sterilizer or from the water supply mains.
In order to protect its integrity, the self-priming pump is equipped with a suitable internal device for checking the minimum level of the
liquid.
Any interruption in the water supply of the steam generator increases the time required to complete the process phases in progress. If
the water supply fails, the sterilizer issues an acoustic alarm signal and is then forced by the operator into a state known as
“emergency” and waits for the optimum parameters to be stored.
� NOTE
If the optional Vacuum and drying assembly kit or the Quick drying assembly kit is installed, the sterilizer is
equipped with a vacuum pump and/or with an internal cooling plate.
Interruption of the water supply of the vacuum pump and/or of the internal cooling plate increases the time required
to complete the phases of the process in progress. In this case, it is possible to force the sterilizer into a state
known as “emergency” while waiting for the optimum parameters to be restored.
2.8.3. SHUTDOWN
The machine is equipped with a main circuit breaker, which is located on the rear panel. Opening this circuit breaker completely stops
the supply of electric power to the machine.
The main circuit breaker disconnects all the poles of the power supply line.
2.8.4. EMERGENCY STOP
The machine is provided with an emergency switch, which is located in the lower part of the post of the process controller. Activation
of the mushroom-type emergency pushbutton, provided with a mechanical reset, disconnects the electric power supply of the
sterilizer.
If the sterilizer was in an operating cycle phase:
When electric power returns, an acoustic alarm signal is issued and the operator must acknowledge the state of
emergency by acting on the mute icon of the touch-screen;
Tthe operator must then leave the state of emergency by acting on the STOP icon of the touch-screen. The sterilizer is
thus brought to the atmospheric pressure balancing phase.
If the sterilizer was not in an operating cycle phase:
when electric power returns, the Fedegari logo is displayed while waiting for commands on the part of the operator.
ID no. 85693 Rev. 2 10 / 31 July 2005