A7™ Service Manual 046-006272-00 4 - 3
Calibration System Calibration
CAUTION: Do not leave gas cylinder valves open if the pipeline supply is in use
and the system master switch is turned to 'ON'. If used simultaneously,
cylinder supplies could be depleted, leaving an insufficient reserve
supply in the event of pipeline failure.
CAUTION: Use cleaning agent sparingly. Excess fluid could enter the machine,
causing damage.
CAUTION: This machine must only be operated by trained, skilled medical staff.
4.2.3 Notes
NOTE: Only bacterial filters with a low flow resistance must be connected to
the patient module and/or the patient connection.
NOTE: Use surgical gloves whenever touching or disassembling valves or
other internal components of the Breathing System.
NOTE: Ensure that the gas supply of the machine always complies with the
technical specification.
NOTE: The APL Valve and PAW gauge marker are for reference only. Calibrated
patient airway pressure is available on the ventilator screen.
NOTE: If the machine should show faults during the initial calibration or
testing, the machine should not be operated until the fault has been
repaired by a qualified service technician.
NOTE: After servicing, functional, sensor and system tests must be carried out
before clinical use.
NOTE: To accommodate additional monitors and other equipment the
anesthesia offers up to two vertical mounting tracks. Use of
unauthorized mounting accessories is not recommended.
NOTE: Always secure any equipment placed on the top shelf of anesthesia
4.3 System Calibration
NOTE: The anesthesia machine drive gas and calibration device drive gas type
setttings should be consistent with the actual drive gas type configured
for the anesthesia machine.
NOTE: Perform the corresponding calibration if any test item of the system
test about measurement accuracy is failed.
NOTE: Fluke VT Plus: The zero reading (offset) of the pressure measurements
may drift slightly with time and temperature. A zeroing function is
provided for the user to zero the offset drift. Typically, this is done
when a non-zero reading occurs when there is zero applied pressure.
However, it is good practice to zero the respective signal before any
measurement is taken.
NOTE: You can select VT Plus to perform automatic calibration of pressure
sensors or flow sensors, or any other calibration devices that fulfills the
accuracy requirements to perform manual calibration.
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