Magnum Venus Plastech Flex Molding Process PPVS - VACUUM SENSOR - Manual (Page 22)

PPVS (Red) Vacuum Sensor Manual
Rev. 03/2013 Page | 22
Testing using the in box leak circuit:
1. Connect the PPVS supply signal to the Inject port
on the control box.
2. Connect one of leak circuit lead signal to the top
of the PPVS (6mm push fit) using the tube and
6mm-4mm reducer provided.
3. Then connect the other leak signal to the
indicator.
4. Adjust the PPVS, when the indicator is on – the
machine would be running. See image below.
Testing PPVS for vacuum leak:
1. Load the PPVS valve into the Universal Insert Adaptor port.
2. Connect the INJECT Output on the control box to the PPVS supply port using 4mm
tube.
3. Connect the PPVS signal line to the pneumatic Indicator on the control box.
4. Using the Vacuum Level Control adjust the vacuum to the desired level.
5. Turn the Vacuum Isolator valve to the Closed position (horizontal) to lock the
vacuum level – if the vacuum level moves (leaks) down the seal in the valve is not
holding vacuum.
Blind Adjustment:
The term “Blind adjustment” means that adjustment can be made without any reference
to the actual switching point of the PPVS-Infusion. In other words the user simply turns
the adjusting screw anticlockwise by a certain number of turns to make the PPVS more
sensitive (higher vacuum level) and clockwise less sensitive (lower vacuum level –
closer to zero).