Agilent Technologies G2571-64000, Service And Repair Manual

Page: 35 / 104

General Information
MS 120 Major Maintenance Service and Repair Manual / 87-900-155-01 (A.00) 35
The MS120 Single Stage Rotary Vane Pumps are single-stage, rotary vane
pumps oil sealed, driven by an electric motor controlled by an inverter. These
high vacuum pumps are suitable for pumping air and small quantity of water
vapour only. Pumping of other types of gas or vapours must be declared in
advance to Agilent Technologies that will give the conformity to the specific
use.
The flanged electric motor is coupled by means of an elastic coupling. The
cooling is ensured by a powerful centrifugal fan.
At the pump inlet there is a mesh filter in order to protect it from solid parts
having diameter larger than 4.7 mm. Furthermore, an integrated non-return
valve prevents the oil coming back and the return of air in the chamber to be
pumped down during the stop phase.
In the tank there is a system of oil smokes separation from the discharged air
(maximum residual 2PPM/weight corresponding to 2.4 mg/m
3
).
The separated oil is recovered automatically by the pump.
The gas ballast valves prevent condensation inside the pump when pumping
down small quantity of vapour.
The following paragraphs contain all the information necessary to guarantee
the safety of the operator when using the equipment.
This manual uses the following standard protocol:
WARNING! The warning messages are for attracting the attention of the operator to a
particular procedure or practice which, if not followed correctly, could lead to
serious injury.
CAUTION!
The caution messages are displayed before procedures which, if not followed,
could cause damage to the equipment.