6. Temperature Control
Figure 6-2. Cabinet Temperature Control
The air rises, and positive pressure and thermal convection
combine to exhaust the warmed cabinet air out the top of the
instrument through exhaust vents on the upper back and upper
display back of the Instrument.
The cabinet cooling system consists of the following major
components:
Table 6-1. Cabinet Temperature Control Components
Description Location
Cabinet Fan Base of Instrument
Blood Pump Temperature IC Blood Pump Power Board
I/O Temperature IC I/O Electronics Power Board
Software Fan Control Single Board Computer
Cabinet Fan Drive Blood Pump Power Board
As shown in the previous table, the temperature integrated circuits
(ICs) are located on the Blood Pump and I/O Electronics Power
boards. The ICs output a voltage linear with the temperature in the
157-1278-913 Rev A 6-9
November 2003
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