Description
17
300407956_002_C1 - 01/2017 - © Leybold
Front Panel
The connectors for cooling water (outlet over inlet) are RC3/8"; the connector
for the purge gas inlet is Swagelok 1/4". The maximum pressure for the
purge gas regulator is 2 bar (0.2 MPa), and the pressure is indicated at the
pressure gauge. Refer to the Technical Data Section for adjusting process-
dependent purge gas
pressures.
CC-type pumps are additionally equipped with an EMO at the controller box
to enable the user to turn off the pump in case of an emergency.
Fig. 1.5 Front Panel Layouts
1
2
3
4
5
LEYVAC LV 80 C
LEYVAC LV 140 C
1
2
3
4
5
1. Pressure Gauge
2. Pressure Regulator
3. Purge Gas Inlet
4. Cooling Water Outlet
5. Cooling Water Inlet
LEYVAC LV 80 C / 250 C
LEYVAC LV 140 C
Gas line (rotor purge):
The main purpose is to decrease the partial pres-
sure of the process gas in the pump, to reduce corrosion due to process
gas, and to retard the accumulation of reaction byproducts. The amount of
purge gas can be adjusted by the flow regulator, and the non-return valve
can prevent the process gases from getting into the purge gas pipe line.
Gas line (shaft seal purge):
The main purpose is to prevent process gas
from entering the gear box through the high pressure side plate. The purge
gas will come into the rotating shaft in the high pressure side plate through
the non-return valve.
