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9.9.3 Cautions
Anesthetic Machines
• Do not leave gas cylinder valves open if the pipeline supply is in use and
the system master switch is turned ON. Pressures from both supplies
may become equal and, if simultaneously used, cylinder supplies could
be depleted, leaving an insuffi cient reserve supply in case of pipeline
failure.
• The hypoxic guard control system only ensures that oxygen-nitrous
mixtures will have a minimum oxygen concentration. HYPOXIC
MIXTURES MAY BE DELIVERED IF GASES OTHER THAN OXYGEN,
NITROUS OXIDE OR MED AIR ARE USED, OR WHEN OPERATING
AT LOW OXYGEN FLOW RATES. When using carbon dioxide, as
an additional gas, make sure the proportions of all gases are carefully
adjusted in accordance with accepted clinical practice. Gas mixtures
within the breathing system must be monitored when using these gases.
• Leaking gases and vapors (downstream of the fl ow control valves and
Oxygen Flush valve) may deprive the patient of metabolic gases and
anesthetic agent may pollute the atmosphere. Tests that detect leaks
must be performed frequently. If detected, leakage must be reduced to
an acceptable level.
• Do not use the anesthesia system if the hypoxic guard control system
does not operate within permitted ranges. Using an incorrectly operating
control system may result in incorrect gas mixtures and injury to the
patient.
• When occluding the breathing system for test purposes, do not use
any object small enough to slip completely into the system. Objects in
the breathing system can interrupt or disrupt the delivery of breathing
system gases, possibly resulting in injury to the patient. Before using
the breathing system on a patient, always check the breathing system
components for foreign objects.
• Do not place materials weighing more than 25kg/55.1lbs on the
bottom shelf, or more than 25kg/55.1lbs on the upper monitor shelf.
Overloading may cause damage to the shelves or cause instability.
(Refer to Specifi cation on page 30 for more details).
• Secure any equipment placed on the shelves.
Notices and Important Information
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