Service and utility functions
Puritan Bennett™ 700 Series Ventilator System Service Manual
10070389 Rev. A
4-21
4.2.3.6 Review constants: Viewing calibration constants in NVRAM
This function lets you view calibration constants in NVRAM.
4.2.3.7 Reset service data
When you install a new internal battery, this function resets that part’s life expectancy value,
which is stored in NVRAM. When you perform a regularly scheduled service, this function lets
you change the number of hours until the next service, which is also stored in NVRAM. The
ventilator uses these new values to update the ventilator’s Service summary display
(function 10). This function also allows you to update the ventilator serial number.
specific calibration constant
value of constant
Turn knob to adjust
Turn the knob to adjust the constant’s value.
For all constants (except piston leak constants), the adjustment is a two-step
process. First, use the knob to perform a coarse adjustment (that is, to adjust the
hundreds or the whole number, in the case of a decimal number). Press ACCEPT
when this coarse adjustment is complete. Then use the knob to perform a fine
adjustment (that is, to adjust the ones or the decimal part of the number). Press
ACCEPT when this fine adjustment is complete.
NOTE:
If you need to perform only the fine adjustment, you must still press ACCEPT
to proceed to the fine adjustment.
Update new constants
Are you sure?
CLEAR (N) ACCEPT (Y)
Press ACCEPT to write the new constants to NVRAM. If applicable, be sure to affix
the small calibration constants label for the new part atop the larger calibration
constants label on the lid.
Cycle power then
perform FIO
2
calib
and O
2
press calib
This prompt appears at thend of the
Update prsol nvram
update, and indicates you
should turn the ventilator off, then back on, and perform
FIO
2
calib
and
O
2
press
calib
Message window display
Description
Message window display
Description
Review constants
Press ACCEPT to proceed.
Review oxygen mixing
or
Review flow sensor
or
Review piston
Turn the knob to locate the desired category of calibration constant and select by
pressing ACCEPT.
specific calibration constan
t
value of constant
Press CLEAR to exit
Turn the knob to view the value of each calibration constant in this category.
Press ACCEPT or CLEAR to return to the previous (
Review...
) prompt.
Message window display
Description
Reset service data
Press ACCEPT to proceed.
Reset battery in use
or
Reset next service
or
Reset serial number
Turn the knob as required to locate the desired type of service data. Press ACCEPT
to select it.
Summary of Contents for Puritan Bennett 700 Series
Page 1: ...Service Manual Puritan Bennett 700 Series Ventilator Systems TM...
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