5
CAUTION
: Do not connect the vaporizer within breathing circuit. The vaporizer is of
the high resistance to flow type, and will present excessive back pressure to the inlet
circuit and to the vaporizer sump. Note that calibration is given for the normal flow rate
of 0-10 liters/min. Direct connection to a ventilator is not recommended since the
vaporizer will offer excessive resistance and develop abnormal back pressure which may
cause connections to blow off or damage the vaporizer. These same precautions are
relevant to all vaporizers of this type.
MAINTENANCE AND SERVICE:
Vaporizers used with halothane are particularly liable to suffer from the effect of
accumulation of non-volatile additives in the vaporizing chamber. Similar effects may
also occur with other anesthetics although more slowly. Anytime the performance of a
vaporizer is suspect, or as a periodic routine, it maybe shipped to the manufacturer, A.M.
Bickford, Inc., for service and calibration. If the vaporizer is damaged by dropping or
other abuse, it should be returned for service and repair before being used again. A yearly
service and calibration is recommended.
CALIBRATON
;
Vapomatic vaporizers are calibrated for the specific agent marked on the labeling.
Only the specified anesthetic should be used.
Each vaporizer is individually calibrated by means of a Riken interference
refractometer at a flow rate of 3 liters/min. and a room temperature of 72 degrees F using
oxygen as a carrier gas. Calibration tolerances are met over flow rates of 100 ml/min.
through 10 liters/min. with a substantially linear output, in ambient temperature range of
60-90 degrees F.
