Inaccurate Volume Ventilation Troubleshooting - Datex-Ohmeda 7100 Technical Reference Manual

5.4.3 Inaccurate volume
ventilation troubleshooting
Start
Zero Flow Sensor
Transducers and
Replace both
flow sensors
(whole cartridge)
Sensor Problem:
Examine for defect or water
plug in lines. Ensure
customer is periodically
emptying integrated circle
module water trap
Pressure Sensitivity
Cal Error:
Check Valve Problem:
Refer to Section 5.4.4.A, "MIA board evaluation (Aestiva machine)."
or
Refer to Section 5.4.5.B, "VMB board evaluation (Aespire machine)."
* Water in harness is indicative of a leak in the tubing, connectors, or MIA/VMB pressure transducer.
Be sure to leak check if it is determined that water is present within the harness.
1006-0836-000 02/03
Problem
Continues?
Perform a
Yes
Pressure
Sensitivity
Calibration
No
Problem
Continues?
No
Yes
Inspect Breathing
Circuit check
valves: replace
seat and disk as
necessary
Problem
Continues?
No
Yes
MIA/VMB Board Evaluation
Problem with
MIA/VMB indicated?
Yes
Replace
MIA/VMB
Do Bit Counts on either
channel vary by more
than 10 from the initial
zero count?
Yes
No
Correct kinks or
leaks, replace
harness if
necessary.
Replace
Harness
Perform
Calibrations and
Re-evaluate
No Replace
Harness
Perform
Calibrations and
Re-evaluate
5 Troubleshooting
Inspect for leaks
or water in
pneumatic lines
between flow sensor
and MIA/VMB.
Water, leaks
or kinks?
Yes
No
* Switch insp. and exp.
pneumatic connections
and repeat Pressure
Sensitivity Cal
Problem
moves to
other sensor
channel?
Yes
No
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