4-16 Maintaining and Troubleshooting the Waters 515 Pump
Inspecting the plunger
After you clean the plunger, inspect it for damage by holding it under a bright
white light and looking down its length for nicks and scratches. It is easier to
see scratches under a bright light than to feel them with your fingers.
If the plunger is not scratched or otherwise damaged, reassemble the plunger
with new seals. If the plunger is damaged, replace the plunger and the seals.
Replacing the plunger
To replace the plunger:
1. Reassemble the components of the plunger assembly as shown in the
figure “Disassembled plunger” on page 4-15. Make sure the brass seat
is located at the bottom of the piston.
2. Use the plunger insertion tool and snap ring pliers to insert the plunger
assembly into the pump. You may find this step easier if you set the
pump on its back.
Warning: To avoid the possibility of eye injury or cuts, handle the
plunger with care. Wear safety glasses and use the plunger insertion
tool. Be aware that the pieces of a broken plunger are very sharp.
Warning: To avoid the possibility of eye injury or cuts, handle the
plunger with care. Wear safety glasses and use the plunger insertion
tool. Be aware that the pieces of a broken plunger are very sharp.
Caution: Be careful not to damage the external controller
connector if you set the pump on its back.
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