Edwards nRVi, Instruction Manual

Page: 21 / 100

All measurements indicated are shown in mm (inches).
Table 4
Fastening points
Pump
A B C D E Mass without
oil (kg)
nRV4i 537 (21.14) 269 (10.59) 211 (8.31) 121 (4.76) 69 (2.72) 27.8
nRV6i
nRV10i
577 (22.72) 309 (12.17) 251 (9.88) 161 (6.34) 109 (4.29) 30.3
nRV14i 597 (23.5) 329 (12.95) 271 (10.67) 181 (7.13) 129 (5.08) 31.5
3.3 Pump performance data
Note:
The performance characteristics described are for use with hydrocarbon oil.
The positions of the mode selector and the gas ballast control define the performance
characteristics of the pump. These performance characteristics are listed fully in Table:
High vacuum mode performance data on page 20 and Table: High throughput mode
performance data on page 20 .
Table: Gas ballast control - High vacuum mode on page 21 gives the ultimate vacuum
and maximum water vapour inlet pressure for each of the six possible combinations of
control positions. The performance graphs in Figure: nRV4i performance graph on page
18 to Figure: nRV14i performance graph on page 19 show the relationship between inlet
pressure and pumping speed for High Vacuum mode.
Page 17
A65901880_D - Technical data