Stephan EVETR, Instructions For Use Manual, Page: 201 / 254

®
10 Troubleshooting

Fritz Stephan GmbH GA-070T-0518V2.7-HAO-EN 201
Battery 2 temp. low MP
TA  Battery 2
undercooled  Check battery 2, replace
if necessary
 Do not operate the
device at temperatures
outside ambient
conditions
(see chapter 1.9).
 Contact
F
RITZ
S
TEPHAN
G
MB
H
customer service
Apnea MP
PA

No inspiration
within the set apnea
alarm limits

Check the patient's
condition!
Does the patient actually
exhibit apnea?
 Switch to mandatory
ventilation, if necessary
 Check the flow sensor
 Check the alarm limits
Respiratory rate high
(Alarm delay: 15 s)
MP
PA  Patient is breathing
at a respiratory rate
above the alarm
limit setting  Check the patient's
condition!

Check the alarm limits

Check the trigger
threshold and correct if
necessary
Airway pressure low
MP
PA  Volume
measurement
outside specified
accuracy  Flow sensor clogged
 Water buildup in flow
sensor tube
Blower failure 1 MP
TA  Internal malfunction
of the O
2
valve
 Check the measured and
set the value for O
2
 Contact
F
RITZ
S
TEPHAN
G
MB
H
customer service
Blower failure 2 MP
TA  Malfunction of the
internal flow sensor  Contact
F
RITZ
S
TEPHAN
G
MB
H
customer service
Replace CO
2
adapter MP
TA

CO
2
adapter
malfunction or
contamination

Replace the CO
2
adapter
CO
2
sampling line
clogged
MP
TA  Sampling line is
contaminated or
clogged  Check the sampling line
 Replace the sampling
line