Magnum Venus Plastech INNOVATOR PRO 5000 (8003) - Manual (Page 25)

MAGNUM VENUS PLASTECH Innovator Pro Manual 25
Figure 5 – Mould Pressure Guard (MPG) Block
MPG Adjustment – The characteristics of the MPG control circuit can be
modified by adjusting the MPG restrictor. This component controls the rate at
which air is supplied to the pump speed control circuit. When the MPG or PPVS
devices leak air, the pressure in the circuit falls and the control circuit stops the
pump and closes the inject gun.
When the circuit is once again sealed, the restrictor controls how quickly the
pressure builds within the circuit and therefore the time delay before the inject
gun opens and the pump restarts.
The lower the flow of air through the restrictor, the longer the pump will take to restart.
See the “Control Box Configuration” section to identify the location of MPG
restrictor in the control box.
NOTE: If this restrictor is fully wound-in, air flow will be blocked and the
pump will not start. Conversely, if too higher flow of air is supplied to the
circuit, safe and correct operation of the machine cannot be guaranteed.
This delay can be further increased if required, by the addition of an air reservoir
to the circuit. Contact MVP for further information.