Mindray BC-2800 - Hydraulic Module

Fluidic System
Dispensing
tube
Syringe
assembly
Aerial dust
filter
Negative
pressure chamber
Rinse
entrance
CC
C
C
50uL 10mL
Metering
tube
Figure2-6 Washing module of fluidic system（washing of front and back baths）
2.4.4 Hydraulic module
The hydraulic module is shown in Figure2-7. This module serves to establish the
vacuum and the positive pressure.
To establish the positive pressure：When both valve 1 and the pump are open,
the pump sucks atmospheric air into it, through the upper port and the NC end of
valve 1. The sucked pressure is stored in the pressure chamber to establish the
positive pressure. The pressure value is monitored by the pressure sensor.
To establish the vacuum: When both valve 2 and the pump are open, the liquid
and air in the pressure chamber is expelled to the outside through the NO end of
valve 1 and the pump and the NC end of valve 2 to establish the vacuum. The
pressure value is monitored by the pressure sensor.
The pump is an imported American product, whose P/N is 3001-10-07252.
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