Manner MES, MSS, MHS, MMS, MIS Technical Information
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TECHNICAL INFORMATION
HOT RUNNER SYSTEMS
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.
MES
1 2 3 4
Turn on mold cooling and
gate cooling before heating
up the hot runner system.
During the heating cycle,
the compressed air for pin
operation must be switched
off.
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 production temperature.
Turn on the submanifolds
(cylinder blocks) and nozzles.
Heat up the entire system
to production temperature.
5 6 7
Maintain the system at
production temperature
for approx. 5 -10 min. prior
to operating valve pins.
air for pin
6 bar).
operation
(min.
MSS / MMS / MHS / MIS / MXS / MZS
1
Turn on mold cooling and gate
cooling before heating up the
hot runner system.
4
Maintain the system at production
temperature for approx. 5-10 minutes
prior to operating valve pins.
2 3
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.
5
After the system is fully heated,
start production.
Start production.Turn on the compressed
Turn on the nozzles, and heat up
the entire system to production
temperature.
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.
IMPORTANT!
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.
IMPORTANT!
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
pin s from be ing dam aged by co ld
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
Re duce the tempera ture of t he hot
runner heating system to standby temperature (100° C to 150° C, depending
on the resin). The valve pins should be
in closed position.
SYSTEM SHUTDOWN
When shuttin g down th e hot r unner
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.
Maintenance Tips
for männer Hot Runner Valve Gate Systems
Polyolefins (f.e. PP/PE)
Approx. 2 million cycles*
Insulating ring
Check for leaks.
If any leaks are detected, please
contact the männer service team.
Melt flow from manifold to hot
runner nozzle
Check for leaks.
Always replace seals whenever the
components are disassembled.
Polyesters (f.e. PC/PBT/PET)
Approx. 1 million cycles*
Engineered resins (f.e. PA)
Approx. 0.5 million cycles*
Gate
If the surface quality is not satisfactory,
ensure that the valve pin and gate
orifice are not damaged.
If any damage is detected, please
contact the männer service team.
Nozzles
Clean off any dirt or deposits.
NOTE: Do not clean heating elements in high-temperature sand
baths or pyrolysis furnaces.
Pneumatic unit
Only use dehumidified air to
operate the pneumatic unit of
männer hot runner systems.
Remove heavy dirt buildup using
cleaning fluid, and apply pneumatic
grease to the contact surfaces.
Replace any brittle seals.
* The mai nte nan ce inte rva ls spec ifi ed here ar e only a n
approximation. Actual intervals may vary, depending on the
resins used, the injection parameters, and the part geometry.
We will be happy to provide you with maintenance information
for your specific hot runner system and application upon request.
Valve pin guide bushing
and valve pin
Use an ultrasonic cleaning system or
similar equipment to clean off any dirt
or deposits produced as a result of
outgassing.
NOTE: Do not use any abrasives to
clean the valve pin guide bushing or
valve pin.
If any damage is detected, please
contact the männer service team.
We recommend that you check your männer hot
runner system regularly to ensure optimum performance and long life.
Pl ease con tact the männer servic e team if any
damage to the parts is detected.
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