Edwards nRVi, Instruction Manual

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Figure 1 General view of the nRVi pump
1. Lifting eye 2. NW25 inlet port
3. Gas ballast control 4. Oil filler plug
5. NW25 outlet port 6. Oil level sight glass
7. Oil drain plug 8. Rubber feet (4 off)
9. Mode selector 10. Motor fan cover
11. Pump controller 12. Correct direction of rotation
13. Electrical inlet connector 14. Pump controller user interface
1. Lifting eye 2. NW25 inlet port
3. Gas ballast control 4. Oil filler plug
5. NW25 outlet port 6. Oil level sight glass
7. Oil drain plug 8. Rubber feet (4 off)
9. Mode selector 10. Motor fan cover
11. Pump controller 12. Correct direction of rotation
13. Electrical inlet connector 14. Pump controller user interface
2.2 Pump controller
The integral pump controller manages the supply of current to a three-phase electric
motor in accordance with operating conditions. The controller monitors power and
temperature and will protect the pump in the event of operation under sustained high
load or under fault conditions.
The controller provides the user interface. The pump may be operated in these modes:
▪ Manually, using the buttons on the interface panel.
▪ Remotely via serial communications or digital and analogue process control
(parallel), via the 15-way D-type logic interface connector. Refer to Logic interface
on page 14 .
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A65901880_D - General description