Haemonetics MCS+, Operator And Maintenance Manual

Page: 27 / 112

System Description 2-13
P/N 39551-00, Rev. F
Press the STOP key only when the processing must be stopped immediately.
When the pumps need to be stopped, but the centrifuge can keep turning, press
the PUMP START/STOP Key. To continue processing, press the PUMP START/
STOP Key again.
Note: If the bowl is more than 1/3 full, continuing to draw after losing separa-
tion may interfere with platelet collection performance. In this case, one should
enter the Return mode to empty the bowl before continuing the procedure.
Pump Keys
PUMP START/STOP
During the Draw and Return modes, the PUMP START/STOP key stops the Blood
and Anticoagulant Pumps if they are turning, and then restarts the pumps after
they have been stopped. This key temporarily stops the machine processing. In
the platelet protocols, the White Pump may continue to turn to maintain optimal
separation.
Figure 2-7, Pump Keys
Pressing PUMP STOP/START does not affect Centrifuge operation. Separation of
the blood components in the bowl is not affected.
If the Blood Pump is stopped and plasma is available in the plasma bag, the
White Pump automatically increases speed to maintain a constant critical flow
through the bowl.
Note: Leaving the MCS+ device in the pump stop mode for extended periods
(longer than a few minutes) can cause coagulation in the needle.
UP/DOWN ARROWS
These keys increase and decrease the pump speed during a procedure.
✍
Pump
Start/
Stop
✍