Chapter 4
CHAPTER 4 | MAINTENANCE
To obtain optimum performance and maximum life from the pump, it is important to keep the
instrument well-maintained.
User maintenance is generally limited to the following:
● Cleaning check valves and filters (clean outlet filter after changing piston seal)
● Replacing parts subject to wear and tear in each pump head: piston seal, check valves, and
piston assembly
● Run-in the pump head and/or seal
IN THIS CHAPTER
● Maintenance Overview | 40
● Cleaning | 40
● Pump Head | 41
● Piston Seals | 45
● Piston and Bellows | 46
● Piston Rinsing Chamber | 47
● Reassemble Pump Head | 48
● Check Valves | 49
● Filters | 51
● Maintenance Procedures | 52
● Resetting Maintenance Logs | 52
● Fuse Replacement | 52
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333/334 HPLC PUMPS | USER’S GUIDE
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