164 1260 Infinity Binary Pump User Manual
10 Maintenance
Maintenance of a Pump Head with Seal Wash
1
Place the pump head on a flat surface. Loosen the lock
screw (two turns) and while holding the lower half of the
assembly (piston housing) carefully lift up the pump
housing and remove it from the piston housing.
2 Remove the seal holder and the seal wash support rings
from the piston housing. Remove the seal holder from the
support ring assembly.
3
Check the piston surface and remove any deposits or layers.
Most suitable is polishing of the piston rod with toothpaste.
Replace the piston if scratched or if dents are visible.
The best way to inspect a piston is to hold it up and
watch e.g. a light bulb through the piston rod. The
transparent sapphire acts as a very strong magnifier and
even smallest surface abnormalities become visible.
4 Using the steel side of the insert tool carefully remove
the seal from the pump housing. Remove wear retainers,
if still present.
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Seal holder
Seal wash support ring
Piston housing
Piston
Insert tool
Piston seal
Pump housing