Arrow AutoCAT 2 Series Operating Manual page 165

8 . T r o u b l e s h o o t i n g
8 . 1 : C o m m o n O p e r a t i o n a l P r o b l e m s
COMMON OPERATIONAL PROBLEMS
Problem Possible Cause(s)
Wandering ECG Poor electrode contact
baseline
Respiratory movements
picked up by patient cable
yoke
Electrodes placed
improperly
No AP waveform Catheter or needle occluded
displayed
Defective transducer
Defective amplifier
Incorrect source selected
Defective waveform
displayed
Transducer Defective transducer
cannot be zeroed
or calibrated Improper calibration
procedure attempted
Zero baseline drifts Defective transducer
Erratic pressure Defective transducer
display
Common Operational Problems
8-4
Corrective Actions
Attach new electrodes
Move the patient cable yoke away
from the abdomen and ventilator
equipment
Consider use of MAN GAIN until problem
can be corrected.
Apply new electrodes to proper
locations
Flush and fill the catheter
Replace pressure transducer
Use external AP monitor connected to
the AP input connector to monitor
Arterial Pressure; call Arrow
International for service
Check AP signal source LED. Change
source by pressing SELECT key.
Use strip chart recorder or an external
monitor connected to the the AP
output connector to monitor Arterial
Pressure; call Arrow International
for service
Replace transducer
Disconnect all AP pressure cables and
press the CAL key then RESET CAL twice.
Reconnect AP cables and follow calibration
instructions in Section 7.1
Replace transducer
Replace transducer