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Instruction Manual FOSSA FO 0015 A - FO 0035 B_EN_en
2.3 Standard Features
2.3.1 Non-return Valve
The non-return valve (NRV), integrated to the discharge connection (OUT), protects the
process against suckback.
2.3.2 Inlet Screen
The inlet screen (IS), integrated to the suction connection (IN), prevents large solid parti-
cles from entering into the machine.
2.3.3 Operating Hours Counter
The opperating hours counter allows the reading of the total operating time that the ma-
chine has run.
2.3.4 Variable-Frequency Drive (Single-phase Version Only)
The machine is equipped in standard with a variable-frequency drive.
2.3.5 I/O and Communication Port (Single-phase Version Only)
The D-Sub 9 supports maintained dry contact remote control and monitoring of the ma-
chine.
2.4 Optional Accessories
2.4.1 Inlet Filter
2.4.2 Exhaust Filter
The exhaust filter reduces the exhaust noise and retains the tip seal dust when the ma-
chine cannot be connected to a house exhaust system.
2.4.3 Gas Ballast Valve
The gas ballast valve mixes the process gas with a limited quantity of ambient air to
counteract the condensation of vapour inside the machine.
2.4.4 Purge Gas Adapter
The purge gas adapter can be fitted in place of the gas ballast valve. It allows you to
connect a controlled supply of inert gas to the pump.
2.4.5 Wheels
Four wheels can easily be fitted to the bottom of the machine to facilitate transportation
and installation.
