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Astell Autoclaves/Sterilisers – AMB220 | AMB230 | AMB240 | AMB420 | AMB430 | AMB440 | AMA240 | AMA440
SAFETY VALVE TESTING
Machine contains a safety valve!
To comply with typical safety regulations this must be kept
in a serviceable condition and must be regularly tested.
Testing period
Test periods depend upon local regulations.
Astell Scientific advise that the safety valve should be
tested in every month to meet the requirements of
most countries for steam safety valve testing. It can be
changed.
All models have an automatic safety-test warning system
and monitor the date of the last safety test that was
completed.
At power-on and cycle start the system checks the
current date and shows a warning after the set period has
elapsed.
Safety valve test program
A special safety test program is provided to carry out a
valve test. This can be accessed from the site engineer
level.
Safety valve location
The safety valves are fitted on the chamber. These are
mounted inside the cabinet and normally discharge
downwards to the floor (unless specified otherwise at
time of order.) They are in a position to allow access for
servicing.
To cancel warning
To cancel run a safety test cycle.
(You cannot cancel it in any other way.)
SAFETY VALVE TEST QUICK REFERENCE
• Touch
• Select “SETTINGS MENU”
• Select “EDIT MACHINE SETTING”
• Select “SAFETY TEST”
• Select “SITE ENGINEER”
• Enter “333333”
• Touch
three times to return main menu.
• Close and lock door
• Touch
to select cycle.
• Select “safety test cycle”
• Touch
to start cycle
• Test cycle is now running
• Heating to set point 1. Press
• Heating to set point 2. Press
Continuously observe the pressure from this point. The
operating pressure has to be between 3.45 and 3.68 bar
(absolute).
After the valve operates touch
to terminate the
test and advance machine into cooling.
Leave until complete and then open the door.
WARNING
The machine should be monitored continuously
until the safety-valve test is completed. When
the valve operates there will be a quantity
of steam released with associated noise. This
itself should not be hazardous but may surprise
or alarm anyone nearby.
WARNING
If the safety valve does not operate at the
stated pressure it must be checked and tested
by a qualified engineer.