Covidien Puritan Bennett 700 Series, Service Manual

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Service and utility functions
Puritan Bennett™ 700 Series Ventilator System Service Manual 10070389 Rev. A 4-17
Serial ports test: This function allows you to test the functionality of the serial
communications hardware (if present).
Reg altitude calib
:
Adjusting the oxygen regulator for use at high or changing altitudes. This
function adjusts the oxygen regulator pressure to achieve the lowest allowable oxygen
mixing flow from the high-flow solenoid, which reduces noise from the high-flow solenoid
during oxygen mixing. Perform this adjustment if:
• The ventilator is to be used at altitudes of 1,000 meters (3300 feet) or higher (atmospheric
pressure of 915 cmH
2
O or lower). Failure to perform this adjustment when relocating
from lower to higher altitudes may result in excessively noisy ventilator operation but
does not affect performance.
• The ventilator was previously adjusted for high-altitude operation and is now to be used
an altitude that is lower by 500 meters (1600 feet) or more (an atmospheric pressure
increase of 50 cmH
2
O or more). Failure to perform this adjustment when relocating from
higher to lower altitudes may result in inadequate oxygen supply pressure and one or
both of these alarms:
LOW O
2
SUPPLY , O
2
% LOW .
Int battery test
or
Ext battery test
xx.x V
Please wait...
Displays current voltage, updated every second. Test fails after first piston stroke if
inspiratory port remains unblocked. Test continues until complete or voltage drops
below limits. (Voltage limits: >24 V initially, >23 V during first piston stroke, and
>21 V for remaining nine piston strokes.)
Int battery test
or
Ext battery test
Reconnect AC power
Reconnect I tubing
Reconnect inspiratory tubing. Verify AC battery charging indicator string is
illuminated when AC is connected.
Battery load test
Test passed
or
Test failed
ACCEPT to proceed
Press ACCEPT to return to the Calib/Other tests menu.
Message window display Description
Message window display Description
Serial ports
ACCEPT to proceed Press ACCEPT to perform test.
Connect port A to B Connect the ports.
Serial ports test
Test passed
ACCEPT to proceed Press ACCEPT to complete the test.
If serial communications NOT
present:
Serial ports test
Are ports present?
Clear (N) Accept (Y) Press CLEAR to pass test, then press ACCEPT to complete the test.