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Contents
Page
1.
General
3
2.
Suitability
3
3.
Design and Construction
3
3.1
Models
3
3.2
Construction of 2- and 3- stage VLV
3
3.2.1
General construction details
3
3.2.2
Unloading Bypass valves
4
3.2.3
Cooling
4
3.2.4
Lubrication
4
3.2.5
Oil separation
4
3.2.6
Sealing of stages
4
3.2.7
Drive
4
3.2.8
Standard VLV design
4
3.2.9
Optional extras
5
3.2.10
Typical applications
5
3.2.11
VLV pumps with Roots blowers
5
3.2.12
Advantages of the VLV range
5
3.2.13
Conditions for use of VLV vacuum pumps
5
3.2.14
VLV capability
5
4.
Installation and commissioning
5
4.1
Mechanical installation
5
4.1.1
Installation
5
4.1.2
Suction side
5
4.1.3
Exhaust
5
4.2
Electrical installation
6
4.2.1
General
6
4.2.2
Electrical connections for monitoring system
6
4.2.3
Terminal Box Connections
6
4.3
Initial Operation
6
5.
Lubrication
7
5.1
Oil lubrication
7
5.2
Oil lubricating pump
7
6.
Maintenance
7
6.1
Oil lubricating pump
7
6.2
Oil mist separator
8
6.2.1
Maintenance of oil mist separator
8
7.
Fault finding
8
7.1
Pump overload
8
7.2
Loss of vacuum
8
7.3
High oil consumption
8
8.
Instructions for storing fresh oil lubricated rotary vane vacuum pumps
8
Data sheets:
D 140 / DA 140 (USA)
➝
VLV-2
D 141 / DA 141 (USA)
➝
VLV-3
Spare parts lists:
E 140
➝
VLV-2
E 141
➝
VLV-3