Mold-Masters E-Multi EM1 - 8.3 Verify Injection Pressure Oil Circuit (Preload Pressure)

8.3 Verify Injection Pressure Oil Circuit
(Preload Pressure)
The E-Multi controller uses a pressure transducer in the injection pressure oil
circuit to monitor injection pressure during the injection cycle. The pressure in
the circuit should be within specications. See Table 9-4 of the E-Multi User
Manual for the respective size for specications.
8.3.1 Check the Preload Oil Pressure
WARNING
Do not open the high pressure port plugs. High pressure port plugs have
plastic plug caps installed to prevent accidental opening.
1. Always check with E-Multi preload pressure at operating temperature and
idle pressure.
2. On the controller, tap the Operation Mode Select button and choose Set
Up Mode. Check the F1 LED. If it is not blinking, press the F1 key to put
the controller into setup mode.
3. Check the screw position. If the position is greater than half the stroke,
move the screw to the half stroke position, and then move the screw back
approximately 25 mm (1.0”) further. This will decompress the screw and
make sure the pressure value is showing idle pressure.
4. Check the pressure reading on the controller.
If the pressure is below the lower limit, the high pressure circuit will need
to be re-charged using the E-Multi Oil Fill Kit.
5. Navigate to the screw settings page. Verify that the actual voltage is
within the limits. Refer to the Engineering Specication Document for the
respective size for specications.
8-2
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