How to connect an Edwards RV5 oil-filled backing pump to a Waters ACQUITY QDa Detector - WKB197975

OBJECTIVE or GOAL

Connect an Edwards RV5 oil-filled backing pump to a Waters ACQUITY QDa detector.

ENVIRONMENT

• ACQUITY QDa Mass Detector
• Edwards RV5

PROCEDURE

Connecting the Edwards RV5 backing pump

The Edwards RV5 pump has NW25 inlet and outlet ports. In order to connect to the existing QDa products, you must use a NW16-to-NW25 reducer (Waters part number 700009268) to connect the inlet port. You must also use a NW25 to the 3/8-inch hose nozzle (Waters part number 6070506) to connect the outlet port.

For QDa systems, the Edwards RV5 pump has the oil return kit fitted, so no ballast is required.

To connect the Edwards RV5 backing pump

NOTE:          The switch box control is required for the Edwards RV5 pump.

1. Position the pump on the floor, behind or underneath the instrument, and within 1 m (3.3 ft) of the rear chassis.

CAUTION:    To prevent overheating, ensure that there is adequate ventilation around the pump.

1. Connect the NW16 vacuum hose via the push-fit connection to the back of the instrument.
2. Connect the other end to the rotary pump inlet using the NW16-to-NW25 reducer.
3. Fit the oil mist filter to the Edwards RV5 pump's exhaust port, NW25 ,using a centerting ring and clamp.
   • Do not use the pump exhaust adaptor (black) supplied with the oil mist filter - the Edwards RV5 pump already has a NW25 exhaust flange fitting.
4. Connect the NW25-to-3/8-inch hose fitting piece to the top of the oil mist filter using a centering ring.
5. Connect one end of the PVC exhaust tubing to the mist filter outlet nozzle using the Jubilee clip from the installation kit.
6. Connect the other end of the exhaust tubing to a suitable laboratory air extraction system.

CAUTION:    To prevent electrical shock, ensure that the laboratory mains power supply is switched OFF and isolated before connecting power cables.

6. Make sure correct voltage on pump is selected. The arrow shown on the pump points to what the pump is rated to for the voltage. (e.g. For countries that use 110-V power supply (for example, the US). "200 V 50 Hz/200-210 V 60 Hz" (Japan).

US:         Japan: 

7. Connect one end of the power cable (pump to switch box) to the Edwards RV5 pump.
8. Connect the laboratory mains supply cable to the rear of the instrument (Figure 2) .
9. Connect one end of the pump control cable to the backing control port on rear of the instrument (Figure 2).

Figure 2:    QDa rear panel and connection to pump control cable

1   Power connector (from laboratory supply)         2   Pump control cable connection (to switch box)

 

CAUTION:    To prevent electrical shock, ensure that each power cable is disconnected from the mains power source before connecting each power                     cable to the switch box.

10. Ensure that the pump power switch is set to ON and attach the three cables to the switch box (Figure 3).

ADDITIONAL INFORMATION

BALLAST Knob should be set to 0 when running. 

VACUUM Knob should be set to the smaller droplets for higher vacuum mode.