Pulsafeeder PulsaPro 900 EN User Manual
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7.5.4
Piston Removal
Piston Removal Procedure:
1. Remove reagent head, and dish plate using the procedure defined in Section 7.4.1, HPV
Removal.
2. Remove the nut from the end of the cross head shaft assembly.
3. Set the stroke adjustment setting to 100%.
4. Rotate the Motor by hand (confirm lockout/tag out) until the piston achieves its full forward
position.
5. Continue Motor rotation until the cross head shaft is pulled from the hole in the center of the
piston assembly.
6. Hook the piston assembly through hole in center and pull the piston straight out of the piston
bore by exerting even tension.
7.5.5
Piston Seal Reinstallation
Piston Reinstallation Procedure:
It is important to apply an anaerobic thread locking compound (Loctite® 242™ Henkel
Corporation) to the threads of the hex nut and torque to 140 foot-pounds to prevent
loosening during operation.
Figure 21