The Drum Vacuum Pump enclosure feels very hot on the surface.
The DVP has been completely shut down.

Remove the Drum Vacuum Drive (DVD) and Drum Vacuum Pump (DVP) covers. Refer to Accessing the Drum Vacuum System Components.

Drum Vacuum Pump has overheated

The DVP will overheat if it runs at max frequency for an extended period.

Test:

Check that the DVD Inverter Drive's alphanumeric display  indicates an External Fault. If a different fault code is indicated, go to Inverter Drive experiences an internal fault.

Access the Junction Box inside of the DVP enclosure. Refer to the label inside the Junction Box cover for the following steps:

• Using a multimeter, check for continuity between pins 6 and 7 of the Junction Box connector. If pins 6 and 7 are an open circuit, check for any loose wiring.
• If no loose wiring is found, then it is possible that the motor's over-temp protection has opened the fault contact.

Solution:

1. Wait for the motor to cool down (5-30 minutes).
2. Type drumvac reset on the computer followed by drumvac on. The drum vacuum should now resume operation.
3. Check that the DVP fan is functional when operation has commenced; a non-functional fan may be the original cause of the pump overheating.

Faulty connection is indicating a fault

Test:

If there is continuity between pins 6 and 7 of the Junction Box connector, then check for any loose wiring in the Junction Box.

• Check for loose wiring inside the DVD.
• Check for loose wiring between cable 10-4142A(DVD-DVP) and pins 1, 2, and 3 of J3 of Inverter Isolation Board. Ensure pins 4 and 5 of J3 of the Inverter Isolation Board are connected together.
• Ensure that cable 10-4276A (Inverter Board - Inverter) is connected to pins SC, S4, and S5 on the Drive Inverter. If a fault is present there should be an open circuit between SC and S4 or a short-circuit between SC and S5.

Solution:

1. Ensure unit is wired correctly.
2. Reconnect or tighten any loose wires.
3. Type drumvac reset on the computer followed by drumvac on. The drum vacuum should now resume operation.

Inverter Drive experiences an internal fault

The Inverter Drive's alphanumeric display shows a fault code. There are 26 different internal fault codes:
CE, CPF0, CPF1, CPF4, CPF5, EF0, EF_, Err, GF, oC, oH1, oH2, oL1, oL2, oL3, oPr, ov, PUF, rr, rH, SC, SPi, SPo, Uv1, Uv2, and Uv3.

Contact the Creo Response Center if any of the above fault codes are displayed.

Note: Fault code ov (over voltage) is due to the DC bus voltage exceeding 800 VDC - a result of the line voltage reaching 566 VAC (a power surge is enough to create the fault). Turn off the power to the unit using the disconnect switch.