1.
Introduction
1.1 Application range and definition
This manual contains installation, operation and maintenance instructions for the BAOSI
hydraulic coupling series roots vacuum pump. The user must use the pump as specified in
this manual and must read this manual before installing and operating the pump.
Important safety information is highlighted by WARNING. The use of WARNING is
defined as follows.
WARNING
Warnings are given where failure to observe the instruction could result in
injury or death to people.
The units used throughout this manual comply with SI International Measurement Unit.
1.2 Description
1.2.1 Outline
The pump is compact and has a high pumping speed. The user must use the pump with a
suitable backing pump. The pump can operate continuously at an inlet pressure of up to
1000mbar (causing the pump body temperature to be abnormally high). Using of two or
more pumps in series can get lower system pressures.
The motor side cover and the gear side cover of the pump are connected to the pump outlet
by a pressure equalization passageway to form a part of the vacuum system. The connecting
passageway is provided with felt to remove debris to prevent contamination of the
lubricating oil and bearings.
The BSJ600LC and BSJ1200LC pumps have a cooling pipeline in the pump outlet, to reduce
the temperature of the rotor and exhaust gas.
Normal operation within the parameters specified in this manual, the pump can safely pump
non-combustible gases and vapors.
The inlet flange and outlet flange of the pump are ISO standard flange.
1.2.2 Structure
The pump is a positive displacement roots vacuum pump, and the three-phase motor drives
the pump through a hydraulic drive.
