WARNING!
Poison hazard - risk of death or serious injury. Do not use abrasives in an open air
environment to clean BeCu components. Airborne beryllium particles are known
carcinogens. Only rework BeCu components using abrasives under ood coolants to
prevent airborne particles.
IMPORTANT!
The Husky Warranty does not cover BeCu components used outside the operating temperature
range, or cleaned using the uidized bed process.
CAUTION!
Do not remove any surface or melt channel plugs. This will void the leak proof guarantee
for the hot runner. Plugs can only be removed by Husky.
1. Any system that is to be sent for uidized bed cleaning is to be completely disassembled.
However do not send the following items for cleaning:
• Set screws
• Polyetheretherketone (PEEK) bushings (refer to Section 6.15.1.3) or ceramic bushings
• Surface hex head plugs
• Nozzle tip insulators
• Nozzle heaters
• Sprue bushing heaters
• Beryllium Copper (BeCu) components, such as manifold bushings, manifold inserts,
some nozzle tips and tip retainers, etc.
NOTE:
Contact Husky for verication of the component’s material before cleaning it with a uidized bed
process.
2. Make sure all electrical wiring and thermocouples are removed.
3. When packing for shipment, make sure the manifold heater ends do not get damaged
during shipping.
The best method is to pack the manifold in a crate where it cannot move, or place the
manifold between two pieces of plywood cut approximately 50 mm (2 in) larger all around.
Hold the manifold and plywood pieces together with bolts using existing hold down holes
or clearance holes in the manifold. Only use plywood thick enough to protect the manifold
and absorb impacts if the manifold is dropped.
4. Send a complete packing list of all the components shipped to make sure nothing is
overlooked when the components are returned.
Hot Runner Installation Manual v 2.2 — March 2021 Maintenance
Inspecting and Cleaning Manifolds 107
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