Terumo BCT Trima Accel, Service Manual

Page: 48 / 340

Table 1-14: Valve system components (continued)
Component Function
3 Valve post Pinches the tubing closed. It contains a roller assembly that allows the valve post to
roll smoothly over the tubing to prevent damage.
4 Valve body Contains the valve post and a flag assembly that is used by the optical encoders to
provide valve position feedback. It is attached to the motor shaft.
5 Valve motor Drives the valve body to the left, right, or center position. There is no feedback
mechanism in the motor.
Valve Assembly
1
Valve post
2 Valve post bearing
3
Optical sensors (3 per
valve)
4 Optical sensor window
5
Lowered cassette
position sensor
connector (J3)
6 Raised cassette
position sensor
connector (J2)
7
Drive terminal
8 Valve motor
9
Valve CCA
10 Valve O-ring seal
11
Valve assembly
connector
Figure 1-33: Valve assembly components
Table 1-15: Valve assembly components
Name Function
1 Valve post Pinches the tubing lines closed by pressing against the valve housing
surface.
2 Valve post bearing Rotates to help pinch the tubing lines closed without damaging them.
Valve System
Trima Accel
®
Automated Blood Collection System • Service Manual 1-39