Magnum Venus Plastech INNOVATOR MEGAJECT 5000 (8001) - Manual (Page 20)

MAGNUM VENUS PLASTECH Innovator Megaject Manual 20
Flush
Press the flush button to clean the injection head. The operator cannot initiate a
flush when the machine is in injection mode, therefore accidental flushing of the
system into a mould during an injection is not possible.
The flush system has an automatic timer function that will stop the flush cycle
automatically. The default duration of the flush is set between 30-60 seconds
during manufacture; however this can be adjusted by the user if required.
The flush cycle can be stopped at any time by pressing the stop button.
NOTE: Before the flush button is pressed, ensure that the outlet from the
mixing head is directed to a suitable waste container.
Mould Pressure Guard (MPG)
The machine features a Mould Pressure Guard (MPG), which is used to control
the maximum allowable pressure at the mixing head. This can be utilized to
provide line pressure control during an injection, or as a safety mechanism to
prevent the line pressure from exceeding the maximum working pressure of the
injection line to the mould.
The MPG block is shown in figure 3.1. The blue air-line supplies air from the
MPG pressure regulator on the control panel. When fluid pressure at the injection
head exceeds the MPG preset level, shown on the MPG pressure gauge, the
internal diaphragm moves and leaks air from the red air line connected to the
control circuit. This causes the machine to slow and stop.
Figure 3.1 – Mould Pressure Guard (MPG) block
NOTE: The MPG control is active on both injection and recirculation modes. It
is correct to hear air leaking from the MPG block when the MPG is operational.