Terumo 801763, Operator'S Manual, Page: 207 / 359

Centrifugal Control Unit
6-8
Continuous Mode
Initiate RPM Mode
Pressing the
Start/Stop
button on the control panel of the centrifugal
control unit or the
Start
button on the CCM Pump Control Box will
activate and start Continuous mode. This is the basic functional
mode of the centrifugal control unit. The pump uses internal RPM
data for the motor control.
On the CCM, the centrifugal
Stop
button will be hidden when the
pump speed exceeds 1500 RPM. This is intended to prevent the
user from stopping the pump suddenly and potentially causing a
backflow situation.
Continuous Operation
During use, the pump speed can be adjusted by using the pump
speed control knob or the pump control slide bar on the CCM.
To End Continuous Mode:
On the control panel of the centrifugal control unit, pressing the
Start/Stop
button when the RPMs are greater than 1550 will cause
the message “TURN SPEED TO ZERO” to appear in the message
area prompting the user to manually reduce the speed. Pressing
the
Start/Stop
button again within 4 seconds will stop the pump. If
the speed is less than 1560 RPMs, pressing the
Start/Stop
button
once will stop the pump. Decreasing the speed to zero using the
control knob will stop the pump.
On the CCM, the centrifugal
Stop
button will reappear when the
Arterial
RPM
1510
Arterial
RPM
STOP
1490
WARNING : With a centrifugal pump, maintain a minimum pump speed or
clamp the pump outlet line and patient’s venous line in order to prevent backflow
and drainage of the patient’s blood. Minimum pump speed is the speed which
overcomes line and patient resistance.
WARNING : If a centrifugal pump stops, clamp the arterial and venous lines and
check for air in the arterial line due to retrograde flow; remove air, attain a pump
speed adequate to overcome the circuit resistance, and then unclamp the lines.
WARNING : When using a centrifugal pump as the arterial pump, closely
monitor the arterial line for air as a centrifugal pump will pump air. Stop infusion
if air enters the pump as gaseous emboli may be introduced into the patient,
with attendant risk of death or severe bodily injury.
WARNING : Avoid prolonged operation of the centrifugal pump with the outlet
fully occluded to prevent warming the fluid in the pump chamber and to minimize
blood trauma.
WARNING : Use of a centrifugal pump for periods longer than durations
appropriate to cardiopulmonary bypass procedures may result in pump failure,
reduced pumping capacity, excessive blood trauma, degradation or corrosion
of blood contact materials with possibility of particles passing through the blood
circuit to the patient, leaks, and increased potential for gaseous emboli.