Mold-Masters Hot Runner, User Manual, Page: 101 / 319

8.2 Startup
WARNING
When the mold is open never inject material through Hot Runner system
under high pressure. Failure to do so can result in serious injury or death.
The correct startup procedure for your Hot Runner system depends on the
type of system:
• Standard systems: see “8.2.1 Standard Hot Runner Systems” on
page 8-2
• Stack mold systems: see “8.3.2 Stack Mold System” on page 8-4
• Melt Disk systems: see “18.8.1 Startup - Melt Link” on page 18-11 or
“18.8.2 Startup - Reverse Melt Link ONLY” on page 18-12.
• Melt Cube systems: see “19.6.1 Startup” on page 19-34
8.2.1 Standard Hot Runner Systems
CAUTION
Failure to follow this procedure may result in leakage / damage occurring in
the Hot Runner.
CAUTION
IMPORTANT
When running thermally sensitive materials, use a thermally stable material
as recommended by the material supplier for the initial startup.
1. Turn on the machine barrel and mold cooling system.
2. Prior to start up, ensure the:
a) Machine barrel is up to processing temperature.
b) Mold cooling is on and at cooling temperature.
3. Heat up all Hot Runner manifolds and / or bridges and inlets (excluding
the nozzles) to processing temperature.
4. Begin nozzle heating when the manifolds and / or bridges have come
within 50°C of processing temperature.
IMPORTANT
Wait until ALL heating zones have reached processing temperature for
5 minutes before continuing.
For Hot Runner systems using heater plates, allow 10 minutes of soak time
after the system reaches processing temperature.
8-2
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SYSTEM STARTUP AND SHUTDOWN
Hot Runner User Manual