5.12
Section 5
Maintenance
Pinnacle Operators Manual
Pickering Laboratories Inc.
Pump Seal Replacement
The Pinnacle PCX uses Pickering’s own pulse-free syringe pump with piston wash. The pump is specially
designed for extended seal life, however the piston seals will require periodic replacement.
The length of service to be expected from the seal depends on a wide variety of factors, including whether
proper shutdown procedures were followed, how often the system was turned on and off, and whether the
piston-wash system was wetted.
It is critically important that the seal be replaced immediately upon failure, or better yet, before failure, because
the reagent can leak into the mechanical housing of the pump and cause corrosion. When a leak occurs, you
may notice fluid on the side of the pump.
The pumps are Items 4 and 10.
SOFTWARE SET UP
To replace the seals, open the PCX control software and select Maintenance under the Instrument menu.
From the Maintenance sub-menu, select Change Seal, and follow the onscreen instructions.
Wait until the end of a run before performing this procedure to conserve reagent.
The Pinnacle will perform the Flush pump sequence, and will flush reagent out of the syringe.
Pull the Piston Wash and Flush lines out of the liquid, so they are just inside the caps. Leave enough space for
the pump to dispense any remaining liquid into the bottles.
When you are ready, click OK on the software.
The pump will retract the piston to dispense any piston wash back into the bottle.
Next, the pump will move the piston all the way forward to empty any remaining liquid into the Flush bottle.
The Valve will move to the blocked position to prevent any flow from the bottles.
Disconnect the Reagent lines from the pump head and plug the openings to prevent any spillage.
Open the panel on the right side of the Pinnacle PCX
by removing the captive screw located at the back of
the Pinnacle PCX, then push the cover back, and lift
it up.
TO REMOVE THE PUMP FROM PINNACLE PCX
Turn off Pinnacle PCX.
Disconnect the electronic pin connector from the
inside wall of the Pinnacle PCX.
Remove the two Alan bolts from the bottom of the
pump first. See Figure 5-11.
Figure 5-11
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