Haemonetics ACP 215, Service Manual

Page: 27 / 186

Equipment Description 27
Haemonetics
®
ACP-215
®
Service Manual P/N: SM-ACP215-01-EN(AB)
Centrifuge
Figure 6, Centrifuge
The device uses a sophisticated centrifuge assembly that offers key
operational features. The centrifuge cover halves are gear coupled and hinged
to provide exceptional access to the centrifuge well. The cover halves also
secure the bowl header in place. An optical switch reports on the position of the
cover latch mechanism. The fluid sensor used to detect moisture in the
centrifuge well area is mounted in the centrifuge well (see
Figure 6 on page 27 ).
Excellent drainage is provided in the event of a fluid spill, which terminates in
a disposable waste bag located at the rear of the device.
The centrifuge motor is controlled by a centrifuge motor control PCB,
discussed later in this chapter.
Circuit Description
One optical sensor controls a +15 VDC signal and the other optical sensor
controls a +28 VDC signal. The +28 VDC is used by the centrifuge distribution
card to energize a relay, which directly controls the +48 VDC centrifuge drive
source. Both signals are then optically isolated and monitored on the CPU card
through an I/O port.