10. Blood Pump
10.3 BP DOORS AND SWITCHES
The blood pump doors protect the operator from injury when the
BP Rotor is turning. These doors each have a small magnet
embedded into the upper corner (see Figure 10-4). A reed switch
is mounted inside the Instrument at the same location. The reed
switches are connected to the Blood Pump Power Board. (See
Tables 10-1 and 10-2.) The state of the reed switch is monitored
by the Blood Pump Controller Board via the ribbon cable from the
Blood Pump Power Board.
When the door is open, the power board receives a stop signal and
the pump will not function. When the door is closed, the power
board receives a non-stop signal and blood pump is able to
function. If the door is opened when the rotor is already moving,
the blood pump will stop immediately and an alarm message will
be displayed within 30 seconds. (If the secondary pump is not
installed, opening that door will not create an alarm.)
Figure 10-4. Location of Blood Pumps, Venous Line Clamp, and Door
Switches
157-1278-917 Rev A 10-7
April 2004
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