Figure 1 The RV pump
1
2
3
4
5
6
7
8
9
10
11
12
CS
/110
4/
A
A
B
A
B
14
13
1. Lifting handle*
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. On
‑
off switch†
11. Motor fan
‑
cover
12. Correct direction of rotation
13. Voltage indicator
14. Electrical inlet
‑
connector
1. Lifting handle*
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. On
‑
off switch†
11. Motor fan
‑
cover
12. Correct direction of rotation
13. Voltage indicator
14. Electrical inlet
‑
connector
* RV3 and RV5 pumps only, a lifting bracket is fitted to RV8 and RV12 pumps.
† Single
‑
phase pumps only.
Note:
Single
‑
phase RV3/RV5 pump shown.
2.3 Description
The RV rotary vane pump is shown in
for item numbers in brackets in the following descriptions. The RV pumps are two
‑
stage,
03/2021 - ©Edwards Limited
Page 10
A65201880_AA
A65201880_AA - Introduction