GE AKTA avant User Manual page 58

3 Standard instrument modules
3.1 Pumps
Part
3
4
5
6
7
8
9
The pump piston rinsing system
A seal prevents leakage between the pump chamber and the drive mechanism. The seal
is continuously lubricated by the presence of eluent. The pump piston rinsing system
continuously flushes the low pressure chamber behind the piston with a low flow of 20%
ethanol prepared in deionized water or equivalent. This prevents any deposition of salts
from aqueous buffers on the pistons and prolongs the working life of the seals.
The pump piston rinsing system tubing is connected to the rearmost holes on the pump
heads.
For instructions on how to fill the rinsing systems, see Section 7.3.1 Change pump rinsing
solution, on page 273.
58
Description
Connections to pump piston rinsing system: Tubing is connected between
the pumps and the Pump piston rinsing system tubes (9)
Check valve: Non-return check valves at the inlet port
Pump head: Encapsulates the inner parts of the pump
System pump B
System pump A
Sample pump
Pump piston rinsing system tubes
ÄKTA avant User Manual 29035184 AE