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Service and utility functions
4-6
10070389 Rev. A
Puritan Bennett™ 700 Series Ventilator System Service Manual
Table 4-4: Temperature sensors
Specific parameter
Description
Should read within this range...
T
box
Ventilator internal temperature
measured on pressure solenoid PCB
(in °C)
5 to 70 °C
T
del
Inspiration manifold thermistor reading
(in °C)
5 to 70 °C
T
exh mon
Exhalation system monitor temperature
(in °C)
Depends on temperature of delivered gas
T
exh ctl
Exhalation system control temperature
(in °C)
42 to 75 °C
(controlled at 50 °C nominally)
T
xdcr
Temperature at flow sensor transducer
(on pressure solenoid PCB) (in °C)
40 to 70 °C
(controlled at 50 °C nominally)
Table 4-5: Battery/BBU sensors
Specific parameter
Description
Should read within this range...
Internal battery
Internal battery voltage reading, taken
with charger off (in V)
18 to 30 V. Internal battery reading only
available when ventilator is powered by
internal battery (otherwise reading is
N/A
).
External battery
External battery voltage reading, taken
with charger off (in V)
18 to 30 V (if connected). External battery
reading only available when ventilator is
powered by external battery (otherwise
reading is
N/A
).
15V BBU
Voltage of +15 V line on BBU PCB (in V)
14.2 to 15.8 V
5V BBU
Voltage of +5 V line on BBU PCB (in V)
4.9 to 5.1 V
24V BSW
Input to BBU PCB from power supply
(in V)
22.5 to 25.5 V
ADC 50mV
Unused
Bat I
Battery current (in A)
Charging: 2 A typical (positive reading)
Charged: < 0.6 A
Battery in use: negative reading
BBU temp
Temperature measured on BBU PCB
(in
°
C)
5 to 70 °C
Summary of Contents for Puritan Bennett 700 Series
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