2-12
Describing the PCS2 Device Components
P/N 85266-30, Manual revision: A
Donor line air detectors (DLAD1 and DLAD2)
The two donor line air detectors are located on the left side of the PCS2 front
panel; the DLAD1 is located above the DLAD2. Both air detectors monitor the
donor line between the donor and the disposable set blood filter as follows:
z
During the PRIME mode, the pumps draw AC solution into the donor
line up to the DLAD. When the DLAD note fluid (or an absence of air),
the detectors signal to PCS2 software that the line has been primed with
anticoagulant solution and is prepared for the Draw cycle.
z
During the DRAW mode, the DLAD will monitor the tubing containing
anticoagulated whole blood and alert the operator if any air has been in-
troduced into the system.
z
During the RETURN mode, the DLAD will monitor the donor line as it
carries blood components being returned to the donor. The DLAD mon-
itor the line for any air which may have passed into the system undetec-
ted (
probability very low
) by the BLAD.
Warning: In the case of any air detection alarm, the operator must respond im-
mediately, note the source and take appropriate action. Further information is
provided in the chapter “Troubleshooting for a PCS2 Procedure.”
During a Return cycle, if either the DLAD1 and/or DLAD2 produce an air de-
tection alarm, this could indicate a failure of the BLAD. The operator should
carefully note the source of air detected; no blood should be sent to the donor
until all air bubbles have been removed from the line.
Haemonetics recommends the following operator actions to remove any air
bubbles detected in the tubing between the BLAD, DLAD1 and the DLAD2:
Î
Press the Draw key until blood enters the bowl, to send any air bubbles
to the bowl.
Î
Continue with a Return cycle only after any air bubbles have been
removed.
Figure 2-9, PCS2 front/side view
1. DLAD1
2. DLAD2
3. Blood filter brackets
4. AC solution pole
5. DPM
6. SPM
1
2
3
5
6
4
