NOTE:
A uidized bed cleaning process is recommended for cleaning manifolds and manifold
components.
1. Clean the manifold in a uidized bed. Refer to Section 6.15.1 for more information.
However, if uidized bed cleaning is unavailable, do the following:
a. Using brass scrapers, remove any resin left protruding from the manifold. Do not
damage the sharp corners or sealing surfaces.
b. Clean the manifold bushing and seating surfaces using brass scrapers. Do not damage
the sharp corners or sealing surfaces.
c. Remove all resin from the backup pads and manifold pocket.
2. Clean the mating surfaces on the manifold with a medium India stone (240 grit oilstone). Do
not scratch the manifold.
3. Make sure all contact surfaces on the manifold plate and manifold bushings are clean and
free of resin, scratches, nicks or burrs.
4. Clean the mating surfaces on the manifold insulators with a medium India stone (240 grit
oilstone). Do not scratch the manifold insulators.
CAUTION!
Mechanical hazard – risk of damage to the nozzle housings. Do not hone the back surface of
the nozzle housing to remove nicks and burrs. The back surface is a precision made section
of the housing with a contoured surface. Honing this section will cause the system to leak
and void the leak proof guarantee for the hot runner.
5. Inspect the nozzle housings. Make sure they are free of nicks, burrs and any resin, especially
in the melt channels. If the sealing surfaces are damaged in any way, replace the nozzle
housings.
6. Make sure the manifolds are clean and at.
NOTE:
Use only Husky recommended high temperature power and thermocouple wire.
NOTE:
Refer to the electrical schematic when replacing wiring.
7. Check all manifold, heater and thermocouple wiring. Replace as necessary.
6.15.1
Cleaning Using a Fluidized Bed Process
The following sections describe uidized bed cleaning and how to prepare the hot runner.
Hot Runner Installation Manual v 2.2 — March 2021 Maintenance
Inspecting and Cleaning Manifolds 105
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