Mold-Masters Hot Runner, User Manual, Page: 204 / 319

15.6.2 Sprint Nozzle Tip Installation
WARNING
Failure to torque the gate seals at processing temperatures may result in
leakage.
1. Clean all residual plastic from the nozzle threads and the torpedo / nozzle
sealing surface.
2. Check the torpedo / nozzle sealing surface for damage. If damaged, lap
the torpedo / nozzle sealing surface in a circular fashion with a hardened
tool and 300 grit lapping compound.
3. After a smooth torpedo / nozzle contact surface is established, apply die
spotting blue compound to the torpedo to the nozzle surface to ensure
proper mating.
4. After ensuring good contact, clean die spotting blue compound off of both
surfaces.
5. Apply nickel based anti-seize compound to the gate seal threads ONLY.
2. Apply loosening torque to the gate seal using the 6-point socket provided
(22 mm socket). If the seal initially loosens, but then starts to bind, apply
some industrial lubricant to remove the gate seal more easily.
3. The gate seal, torpedo and insulator cap should come off the nozzle as
an assembly. If the torpedo remains in the nozzle after the gate seal is
removed, raise the nozzle temperature by 15 ºC (59°F) or 5% power and
remove the torpedo using soft jawed pliers.
4. Turn off heaters after gate seal removal.
Sprint Nozzle Tip Removal - continued
15-17 MAINTENANCE
Hot Runner User Manual
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