Overview; Ordering Information - Edwards nEXT730D Instruction Manual

3. Overview

A nEXT730D, nEXT930D or nEXT1230H pump consists of a turbomolecular pump with a
permanently attached motor controller containing drive electronics.
The motor controller controls the electrical supply to the pump. It allows manual
adjustment of the standby speed and all other controls can only be operated through
the logic interface. To operate the pump, connect it to the customer control equipment
and power supply or, alternatively, use the Edwards TIC Turbo Instrument Controller, TIC
Turbo Controller or TAG Controller and the Edwards power supply.
The motor controller drives the brush-less motor in the pump.
The nEXT pumps are supplied with an inlet screen fitted into the centering O-ring for ISO
version pumps and into the envelope for CF version pumps. The inlet screen protects the
pump against damage that would be caused by debris entering the pump.
The nEXT pumps have a vent port for venting the pump and vacuum system to
atmospheric pressure. The pump is supplied with a manual vent valve fitted; this can be
replaced with a TAV5 or TAV6 solenoid-operated vent valve. The TAV valve can be
directly controlled by the on-board motor controller.
The nEXT pumps have a purge port: an inert purge gas can be introduced to protect the
bearing and motor from corrosion. An optional vent port adapter and purge restrictor
can be fitted to the purge port to control the flow rate of the purge gas and to filter the
gas supply. Additionally this may be used to optimise the performance of the pump, for
example with low molecular mass gases.
A forced air cooling kit and a water-cooling block are available as optional accessories to
cool the nEXT pumps.

3.1 Ordering information

Table 1 Table Ordering information
Part No.
B8J200300
B8J200400
B8K200D00
B8K200F00
B8N4A0F00
B8N4A0E00
B8N4A0D00
B8N4A0FU0
B8N4A0EU0
B8N4A0DU0
nEXT730D and 930D pumps can be mounted in any orientation,
nEXT1230H pumps can be mounted
B8J200880_D
300812671_002_C3
B8J200880_D - Overview
Pump name
nEXT730D NW25 ISO-K 160
nEXT730D NW25 CF 160
nEXT930D NW25 ISO-K 200
nEXT930D NW25 CF 200
nEXT1230H CF200 NW40
nEXT1230H ISO-F200 NW40
nEXT1230H ISO-K200 NW40
nEXT1230H CF200 NW40 INV
nEXT1230H ISO-F200 NW40 INV
nEXT1230H ISO-K200 NW40 INV
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