Mindray BC-2800 Service Manual

Fluidic System
1 3 4
2
5
Sample
probe
Probe
Wipe
Buffer
tubing
Buffer
tubing
Diluent (dispensing)
tube
Syringe
assembly
Lyse entrance
Diluent entrance
NC
NO
CNC
NO
C
NC
NO C NC
NO
C
NC
NO
C
50uL 10mL
Lyse
(dispensing) tube
Figure 2-3 Aspiration/dispensing module
The lyse is aspirated and dispensed into the bath as described below:
The valves 1, 3 and 5 are open and the motor pulls the syringe plunger
downward to aspirate certain amount of lyse. The aspirated lyse is stored in the
buffer tubing of valves 1 and 3. Then valve 1 is closed and the motor runs
reversely to push the syringe plunger upward to dispense the stored lyse into the
bath.
Since the capacity of the buffer tubing is far greater than the volume of the
aspirated lyse, the lyse will not overflow to the syringes through valves 3 and 4.
Service tip: Note that the length and type of the buffer tubing shall not be
changed.
2.4.2 Counting module
The counting module mainly consists of the bath, valve 1 and 2, vacuum filter,
metering tube, negative pressure and other supporting components, as figure
below shows.
BC-2800 Auto Hematology Analyzer (V1.0) 2- 5

Mindray BC-2800 Specifications

General

Reagents	Diluent, Lyse, Cleaner
Power Supply	AC 100-240 V, 50/60 Hz
Power Consumption	≤150 VA
Printer	Built-in thermal printer
Type	Hematology Analyzer
Parameters	WBC, RBC, HGB, HCT, PLT
Sample Volume	20 μL
Display	Large LCD display
Data Storage	10, 000 sample results
Interface	RS232, USB
Operating Environment	Temperature: 15-30°C, Humidity: 30-85%
Storage Environment	Temperature: -10-55°C, Humidity: ≤93%