5-
NOTE 
 
The service life of the pump tubing is 18 month. Tubing should be 
checked irregularly and replaced in time.   
Do not use excessive force while pulling, slipping the tubing or doing 
any operation that might pulling the tubing. Otherwise, the tubing 
might be damaged or the inner connection might be cut off.     
While connecting the tubing, insert the tubing into the adapter until the 
tubing reaches the bottom of the adapter so as to ensure the reliability 
of the connection. 
While installing the pump tubing into the pump, avoid twisting. If 
necessary, pull the tubing back and forth slightly.   
Calibrate the pump after replacing the pump tubing. Otherwise, the 
aspiration volume might not be correct and the test may be affected. 
 
5.3.5 Replacing Aspiration Tubing 
During operation, if the aspiration tubing is blocked and can not be unblocked, 
replace it with the tubing (OD: 1.6mm; length: 200-220mm, transparent material), 
with one end connected with silicone tube-OD: 4mm; length: about 30mm) in the 
accessory. The replacement procedure is as follows: 
1  Open the optical window cover and press the bottom of the flow cell ( if flow 
cell fastening screw is installed, you do not have to press), then carefully pull 
the metal inlet tubing which is connected with the flow cell ( the slimmer one 
which is closer to the front of the instrument) 
 
Pull the 
tubing 
out