2. General description
2.1 Overview
WARNING: INCORRECT USE OF EQUIPMENT
Risk of injury or damage to equipment. Incorrect use of the equipment can cause
injury. The user is responsible for the safe operation, installation and monitoring of
the system.
The pump is connected by a cord. The pump is designed for use on clean duty
applications. The cord ratings are:
▪
Voltage - 200 - 240 V
▪
Frequency - 50 or 60 Hz
▪
Current - 8.5 A
The pump is not designed for use with flammable, corrosive, toxic or other hazardous
gases. Gas or oxygen can mix in the pump system.
The compact dry-pumping system operates in steady-state gas load conditions with an
inlet pressure from 1
‑
15 mbar. If the inlet pressure is more than 15 mbar for an
extended period, the pump controller reduces the motor speed. The motor speed is
increased when the pressure is reduced, or when the transient overload protection has
recovered. Refer to
on page 13 for information on maximum
inlet pressure.
Refer to
on page 8. The system is supplied with a NW40 or
NW50 inlet port (item 3) and a NW25 exhaust port (item 2).
The pump mechanism is operated by a three
‑
phase electric motor. The pump controller
controls the motor.
The system is air cooled by a fan. The fan is installed between the pump controller and
the pump cartridge. The fan continues to operate for 5 minutes after the pump is set to
off. The pump has a thermal protection device that will stop the motor if a thermal
overload, for example in high ambient temperature occurs. You must restart the pump
after it has cooled down.
The system has a purge gas connection, if it is necessary to purge the system.
The pump is designed to remove the residual gases used in high vacuum systems. The
gases are:
▪
Air
▪
Carbon monoxide
▪
Neon
▪
Ethane
▪
Nitrogen
▪
Krypton
▪
Argon
▪
Helium
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A77010880_B - General description
