Oritron ICS-2100 用户手册

Doc. 065291-01 3/09

6. The piston does not come off as part of the pump head assembly because it is 

captured by a magnetic retention system. After removing the pump head, hold 
the shaft of the piston (near the base), tilt the piston slightly, and pull the 
piston away from the pump.

1. Remove the guide from the spacer to expose the piston rinse seal and O-ring. 

Remove the O-ring.

2. Remove the old piston rinse seal from the guide as follows:

a.

Hold the guide with the flat side facing up.

b. To dislodge the piston rinse seal, 

gently insert the shaft of the piston 
through the small hole in the center 
of the guide (see photo).

c.

Pull the seal off the end of the 
piston shaft and remove the piston 
from the guide.

3. Hold the new piston rinse seal 

(P/N 048722) with the grooved side 
facing up.

4. Using your fingertip, gently press the piston rinse seal into the guide until the 

edge of the seal is below the surface of the guide. 

5. Place the new O-ring (P/N 059283) into the groove in the guide.

6. Remove the O-ring from the groove in the flat side of the spacer and replace it 

with the new O-ring (P/N 014895).

7. In one hand, hold the guide with the O-ring and piston rinse seal facing up 

(this prevents the O-ring from falling out). In the other hand, hold the spacer 
with the cavity facing down.

8. Gently press the guide into the cavity in the spacer until it is fully seated.