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Equipment Description
P/N: SM-ACP215-01-EN(AB)
Haemonetics
®
ACP-215
®
Service Manual
Pumps
The device uses two peristaltic pumps to move blood and solutions through the
disposable. The pump/tubing system is designed to pump approximately one
ml per revolution and is capable of pumping up to 250 ml/min.
Figure 5, Pumps
Each pump rotor has two urethane pumping rollers and two plastic alignment
rollers. The pumping rollers occlude the tubing against the pump rotor housing,
while the alignment rollers keep the tubing centered on the pumping rollers.
The pump motor is a DC brush type equipped with a 500-line quadrature
encoder for speed feedback. The CPU transmits the desired pump rate and
direction to the driver card. The driver card compares this information with that
received from the encoder and adjusts the motor’s drive level, using pulse
width modulation, to compensate for error. This feedback circuit eliminates the
need to adjust the pump speed, and no provisions are made for pump speed
adjustment by a qualified service technician.
Blood Pump
During Prime, adding hypertonic solution, and dilution, the blood pump rotates
counterclockwise (CCW) simultaneously with the solution pump to drive the
solution to the RBC bag located on the shaker. See
and
.
