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1. If only one channel reports this fault, replace the safety
card. Then recalibrate the DPM and safety system.
2. If both channels report this fault, refer to Table 6-3,
Critical Register, to determine which air detector may
have sensed air. After determining which air detector
may have faulted, refer to the appropriate error codes
(“Air in Anticoagulant Line” for ACAD, “Air in Donor
Line 1” for DLAD1, “Air in Donor Line 2” for DLAD2)
listed in the Troubleshooting Table for the suggested
resolution.
Note:
This error is most commonly caused by a major
obstruction in the disposable tubing or infiltration at the
needle site, resulting in a rapid change in pressure. Check
tubing for kinks or obstructions, and check the needle site.
1. Use pressure test in Diagnostics to check DPM values. If
DPM is out of calibration, use A/D in Calibration and
recalibrate the DPM.
2. Using safety system in Calibration, calibrate the safety
system.
Note:
Improper loading of the tubing into the pumps most
commonly causes this error. This fault could also occur if
there is any obstruction of the pump during the procedure
such as touching the pumps or tubing draped across the
pumps.
1. Inspect the blood pump and AC pump rotors and
ensure the rollers are clean and turn easily. Use
Diagnostics to check the blood pump and AC pump
speeds.
2. Use the valve test in Diagnostics to manually transition
valves and monitor the valve and switch response.
1. Check +5 VDC power supply voltage. The correct
voltage should be 5.10 to 5.20 VDC. Troubleshoot to
determine if power supply needs adjustment or
replacement, or a defective component is bringing
down the voltage.
6-34
PCS2 Service Manual
Code
Error
Meaning
Corrective Action
000400
000800
001000
004000
AIR FAULT
PRESSURE FAULT
STATE FAULT
POWER SUPPLY
FAULT
The CPU has failed
to respond to air
detection in less than
one second.
The safety system
DPM pressure limit
has been exceeded
(-100 to +330
mmHg).
The motion of the
pump motors, or
position of the donor
valve does not
correspond with the
machine state given
to the safety system.
The +5 volt DC
supply as monitored
on the Safety PCB
exceeds the
acceptable range
(+4.6 to +6.3 VDC).
Table 6-2, Error Codes of the Fault Register
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