Product Description | 2
Instruction Manual COBRA NC 1000 B WCV_EN_en
7 / 32
The cooling liquid is cooled by a plate heat exchanger (PHE) which must be connect-
ed to the water main.
2.4.2 Resistance Thermometer
The resistance thermometer monitors the cooling liquid temperature of the machine.
A trip signal must be set. The machine must be stopped when the cooling liquid tem-
perature reaches 70 °C.
2.4.3 Level Switch
The level switch monitors the cooling liquid level in the cylinder.
The machine must be stopped when the cooling liquid level is too low.
2.4.4 Thermometer
The thermometer allows a visual display of the cooling liquid temperature.
2.4.5 Sealing Systems
The machine is equipped with labyrinth seals on the motor side and suction side.
Other sealing systems are optionally available, see
.
Sealing systems prevent the process gas going to the bearings chambers.
Depending on the application, the sealing systems efficiency can be improved with a
barrier gas system, see
2.5 Optional Accessories
2.5.1 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.
The gas ballast valve has an influence on the ultimate pressure of the machine, see
A ball valve enables to open or close the gas ballast flow.
2.5.2 Silencer
A silencer at the discharge connection (OUT) can be provided to reduce the exhaust
gas noise.
2.5.3 Barrier Gas System
The barrier gas system allows the supply of compressed air or nitrogen into the motor
side shaft seals in order to improve the sealing efficiency.
2.5.4 Mechanical Seals
The sealing systems can be equipped with mechanical seals. The following variants
are possible:
– Oil lubricated single mechanical seals on the motor side and labyrinth seals on the
suction side.
– Oil lubricated single mechanical seals on the motor side and suction side.
Содержание COBRA NC 1000 B
Страница 31: ...Note...
