GS corpuls3 - Page 269

User Manual corpuls
3
Procedure in case of malfunctions
ENG - Version 2.1 – P/N 04130.2 257
Malfunction Troubleshooting Explanation/corrective action
Expiratory CO
2
cannot
be detected.
Nasal tube of the nasal
adapter is obstructed.
 When the nasal tube is obstructed with
secretions, the sensor cannot detect the
expiratory CO2.
 Replace the nasal adapter with a new
one.
Nasal tube is removed or
not properly inserted in the
nostril.
 When the nasal tube is not properly
inserted in the nostril, the sensor cannot
detect the expiratory CO2.
 Reattach the nasal adapter correctly.
YG-120T nasal adapter is
used for a patient exhibiting
oral breathing.
 The nasal adapter YG-120T cannot
detect the orally expiratory CO2.
 Use adapter YG-121T or YG-122T.
The ambient light is too
bright, thereby making
measurement impossible.
 Protect the CO2 sensor against ambient
light by using opaque material.
Measured ETCO
2
value is inaccurate or
unstable.
The sensor has just been
attached to the patient.
 Immediately after the attachment, the
photo detector drifts due to the patient
body temperature.
 Wait for several minutes until the photo
detector temperature stabilises.
Long time measurement in
an extremely high humidity
environment, such as
humidified respiratory gas
or simultaneous use of a
nebuliser.
 In an extremely high humidity
environment, the transparent membranes
inside the nasal adapter are exposed to
water droplets in which the moisture of
the respiratory gas has condensed. The
transparent membranes may get
damaged and lose its anti-fogging
performance because of the water
droplets and this may cause unstable
and/or inaccurate measurement.
 Periodically check the condition of the
nasal adapter, and if necessary, replace
the nasal adapter with a new one.
 Be aware that the nasal adapter cannot
be used for more than 24 hours.
Blood or mucus adheres to
the transparent membranes
of the nasal adapter.
 Not enough infrared light is transmitted
through the nasal adapter airway.
 Replace the nasal adapter with a new
one.
Window of the photo
detector and light emitter
are dirty.
 Not enough infrared light is transmitted
through the nasal adapter airway. Clean
the sensor according to the operator's
manual.
 Clean the sensor according to the
operator's manual 9.7.6 CO2 Sensor,
p. 223.