mss / mms / mhs / mis / mXs / mZs
start-up instructions
for männer Hot Runner Valve Gate Systems
Please note: use dehumidified air only. minimum air pressure required for pin actuation: 6 bar.
fillinG
Several injection cycles may be required
to fill the hot runner system the first
time the unit is used. Continually check
the cavities after each cycle and remove
all short shots until ultimately all parts
are completely filled.
emPTyinG The inJecTion uniT
To prevent the gate orifices and valve
pins from being damaged by cold
material, do not actuate the valve pins
while setting up the injection molding
machine or while emptying the injection
unit of any remaining material.
ProDucTion sToP
Reduce the temperature of the hot
runner heating system to standby tem-
perature (100° C to 150° C, depending
on the resin). The valve pins should be
in closed position.
mes
sysTem shuTDoWn
When shutting down the hot runner
system, switch off all control circuits at
the same time. To prevent the hot runner
system from being damaged by heat
accumulation, allow the mold cooling
system to run for another 20-30 minutes
at approx. 30° C.
remoVinG The molD inserTs
Before removing the mold inserts, make
sure that the hot runner is switched off
(temperature not exceeding 60° C) and
the valve pins are in open position.
Turn on the submanifolds
(cylinder blocks) and nozzles.
Heat up the entire system
to production temperature.
In general, use the “soft-start“
function of the control system.
Heat the main manifold with
the sprue bushing to approx.
80-90% of the required pro-
duction temperature.
During the heating cycle,
the compressed air for pin
operation must be switched
off.
Turn on mold cooling and
gate cooling before heating
up the hot runner system.
When starting up after a pro-
duction stop, purge the barrel
of all remaining resin before
restarting. For start-up, re-
duce the injection volume to
70% of the required amount.
Start production.
Turn on the compressed
air for pin operation (min.
6 bar).
Maintain the system at
production temperature
for approx. 5 -10 min. prior
to operating valve pins.
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imPorTanT!
Turn on the nozzles, and heat up
the entire system to production
temperature.
In general, use the “soft-start“ function
of the hot runner control system. Heat
up manifold to approx. 80-90% of the
required production temperature.
Turn on mold cooling and gate
cooling before heating up the
hot runner system.
When starting up after a production
stop, purge the barrel of all remaining
resin before restarting. For start-up,
reduce the injection volume to 70%
of the required amount.
After the system is fully heated,
start production.
Maintain the system at production
temperature for approx. 5-10 minutes
prior to operating valve pins.
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imPorTanT!
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