Mold-Masters Hot Runner - Gate Seal Removal

15.5.2 Gate Seal Removal
WARNING
High temperature on the nozzle. Wear safety clothing such as heat-
resistant coat and heat-resistant gloves. Failure to do so may cause serious
injury.
CAUTION
Seals and liners for Accu-Valve MX, Accu-Valve EX and Accu-Valve CX are
a sub-assembly utilizing a manufactured interference t. Disassembly of this
sub-assembly may a󰀨ect alignment of the valve pin to the gate, causing
wear.
The terminal end is a sensitive area and can easily break if not handled to
specications.
CAUTION
NOTE
If the cavity plate is easily removed you can access the nozzle seals while
still in the system.
Hot Runner systems must be within 40°C (104°F) of mold temperature
before the cavity plate can be removed. It is recommended the nozzle be
removed from the system before removing the gate seal.
Use the socket supplied in the Mold-Masters tool kit to loosen the gate seal.
The following procedure applies to all gate seals (including carbide) with
threads larger than an M6 (excluding TIT Edge).
1. Apply penetrating lubricant to gate seal area.
2. Leave the nozzle in the mold or remove it to a vice and clamp carefully.
3. Using the temperature controller, heat the nozzle body until all residual
plastic is melted from the gate area. If the nozzle is inside the mold, heat
up the whole system and turn on the cooling or remove all O-rings.
15-13MAINTENANCE
Hot Runner User Manual
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