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nEXT240
Edwards nEXT240 User Manual
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© Edwards Limited 20
09. All
rights reserved.
Page 73
Edwards and th
e Edwards logo
are tradem
arks of Edwa
rds Limited.
Service, spares and accessories
B800-00-880 I
ssue A
Figure 18 - nEXT exploded accessories v
iew
1.
BX 250 Bake out b
and (DN100CF envelope shown)
2.
BX 250 Bake out b
and position
3.
WCX W
ater coolin
g accessory
79
81
Table of Contents
Default Chapter
3
Table of Contents
3
Introduction
8
Scope and Definitions
8
General Description
9
Pump Controller
10
Operational Features
10
Power Limit Setting
10
Standby Speed
10
Timer
11
Analogue Output
11
Automatic Vent Options
11
Normal Speed Setting
12
Logic Interface
12
Parallel Control and Monitoring
12
Serial Control and Monitoring
12
Serial Control with Parallel Monitoring
13
Parallel Control with Serial Monitoring or Serial Configuration
13
Controller Configuration (Serial Set-Up)
13
Technical Data
14
General
14
Pumping Media
14
Next240 Performance Curve
19
Next300 Performacne Curve
19
Next 240D Dimensions (MM)
21
Next 300D Dimensions (MM)
22
Next 400D Dimensions (MM)
23
Vent Gas Specification and Vent Control Data
24
Purge Gas Specification
25
Cooling Water
25
Materials Exposed to Gases Pumped
25
Electrical Data
26
Logic Interface Connector
26
Controller Connector Socket
27
Maximum Allowed Rate of Pressure Rise During Venting: Pressure against Time (with Pump Initially at Full Rotational Speed) 17 7 Controller Connector Showing Pin Numbers
28
Interface Circuits for Next Turbo Pump Controllers
29
Indicator Leds
30
Operating and Storage Environment
30
Installation
32
Unpack and Inspect
32
Typical Installation
32
Connection to the Vacuum System
33
Typical Pumping System with a Next Pump
33
Inlet-Screen (Supplied Fitted on CF Only)
34
Mechanical Fixing
34
Inlet-Connection and Orientation
34
Base Mounting
35
Backing Connection
35
Interstage Connection (Variants Only)
36
Purge Gas Connection
36
Connect the Purge Gas
36
Recommended Purge Gas Flow
36
Electrical Installation
36
Introduction
36
Earth (Ground) Connections
36
Connect the Logic Interface to the TIC
36
Connect the Logic Interface to Your Control Equipment
37
Connect the Electrical Supply
37
Connection for Parallel Control and Monitoring
38
Logic Interface Connections - Parallel Mode
38
Connection for Serial Control and Monitoring
39
Connect the Serial Interface to Your Control Equipment
39
Controller Status Information
40
Serial Enable
41
Serial Protocol
42
Message Structure
43
Command Set
44
Simultaneous Parallel and Serial Operation
46
Schematic Diagram of the Logic Interface Connections
46
Multi-Drop Operation
47
Vent Options, Vent Valve Connection and Control
47
Manual Vent Valve
47
TAV5 or TAV6 Solenoid Vent Valve
47
Controlled Venting
48
Alternative Valve Connected to the Vacuum System
49
Cooling
49
Introduction
49
Forced Air Cooling
49
Water-Cooling
50
Maximum Relative Humidity to Avoid Condensation with Water Cooling
50
Operation
52
Configuring the Next Pump Using Serial Commands
52
Power Limit Setting
52
Powering a Fan from the Controller
53
Controlled Venting Options
53
Standby Speed Setting
54
Normal Speed Setting
54
Timer Setting and Options
55
Analogue Signal Options
56
Factory Settings
56
Assigning a Multi-Drop Address
56
Configuring the Next Pump Using a TIC
57
Start-Up
58
Close the Vent Valve
58
Pre-Start Checks
58
Operation with Parallel Control and Monitoring
59
Start the Pump
59
Running at Standby Speed
59
Stop the Pump
59
Parallel Monitoring
59
Operation with Serial Control and Monitoring
59
Delayed Start
59
Start the Pump
60
Standby Speed
60
Stop the Pump
60
Temperature Readings
60
Link Parameter Readings
61
Measured Motor Speed
61
Simultaneous Parallel and Serial Operation
61
Operation with a TIC
61
Decelerating and Venting
61
Operation at Extreme Conditions
62
Operation with High Inlet Pressure
62
Operation at High Temperatures
62
Operation at Over-Speed
62
Electrical Supply Failure
62
Bakeout
63
Maintenance
66
Introduction
66
Bearing and Oil Cartidge Maintenance
66
Rotor Life
66
Clean the External Surfaces of the Pump
67
Fault Finding
67
Flashing Service Codes
70
Flashing Error Codes
70
Decoding System Status Words
71
Useful Service Information
73
Storage and Disposal
74
Storage
74
Disposal
74
Service, Spares and Accessories
76
Introduction
76
Service
76
Returning a Pump for Service
76
Bearing and Oil Cartridge On-Site Maintenance
76
Spares
77
ISX Inlet-Screen
77
Inlet-Strainer
77
Inlet-Flange Seals and Integrated Inlet Screens
77
Accessories
77
Installation
77
ACX Air-Cooler
77
WCX Water-Cooler
78
BX Bakeout Band
78
TAV Vent-Valve and Vent-Port Adaptor
78
VRX Vent-Restrictor
78
Vent-Port Adaptor
79
PRX Purge-Restrictor
79
Next Exploded Accessories View
80
Next Exploded Accessories View
81
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Edwards nEXT240 Specifications
General
Brand
Edwards
Model
nEXT240
Category
Water Pump
Language
English
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