Edwards nEXT nEXT85 - Alternative Valve Connected to the Vacuum System; Figure 21 Auxiliary Interface Connection

If the pump is controlled with a manufacturer's TIC Turbo and Instrument Controller or
TIC Turbo Controller, the TAV solenoid valve can be operated from the TIC. Refer to the
TIC Instrucon Manuals for more informaon.
Figure 21 Auxiliary interface connecon
1. Accessory connector1. Accessory connector
6.2.4 Alternave valve connected to the vacuum system
When you use another vent valve, install a vent restrictor to the vacuum system to limit
the rate of increase in pressure.
Refer to Table: Vent restrictor orice diameter if venng the vacuum system chamber on
page 71 for informaon about vent restrictor sizes. If a vent restrictor is not installed,
open the vent valve only aer the speed of the pump decreases to 50% of full rotaonal
speed.
Vacuum system volume (litres) Orice diameter (mm)
< 20 < 1.0
< 10 < 0.7
< 5 < 0.5
< 2 < 0.35
Page 71
B8G000880_D - Operaon