Product Description | 2
Instruction Manual FOSSA FO 0015 A - FO 0035 B_EN_en
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2.1 Operating Principle
Compression cycle
Position 1
Position 4
Position 3
Position 2
Position 5
Gas inlet (IN)
Gas outlet (OUT)
Fixed scroll
Orbiting scroll
Gas process pocket
Scroll vacuum pumps consist of both a fixed and an orbiting scroll. As the orbiting scroll
moves, voids are created at the inlet of the pump, drawing in the gas. As the rotor fur-
ther moves, the gas is steadily compressed until it is discharged to atmosphere at the
pump exhaust.
The compression is made without the use of any lubrication whatsoever.
NOTICE
Lubricating a dry running machine (compression chamber).
Risk of damage to the machine!
• Do not lubricate the compression chamber of the machine with oil or grease.
2.2 Application
The machine is intended for the suction of air and other dry, toxic, non-aggressive and
non-explosive gases.
Conveying of other media leads to an increased thermal and/or mechanical load on the
machine and is permissible only after a consultation with Busch.
Depending on the optional variant, the machine may be used for ATEX or oxygen appli-
cations, see
The machine is gas tight when a gas ballast valve is not installed.
The machine is suitable for continuous operation.
The continuous operation of FO 0035 B is limited to a suction pressure of 100 hPa
(mbar) abs..
Permitted environmental conditions, see
.
The machine is capable of conveying gases which contain a certain percentage of water
vapour if the gas ballast valve (accessory) is installed and open. See chapters
and
.
