Operation
47
300407956_002_C1 - 01/2017 - © Leybold
■
Check the exhaust piping. If there is any valve closed on the exhaust pip-
ing, open it.
■
Check that the 24V valve is opened before starting to ensure a shaft seal
purge flow.
■
Check that the manual rotor purge is opened or closed, depending on the
requirements of your applicaiton.
■
Check if the inlet port of the pump and the vacuum system are connected
properly.
■
Check the connection between the thermal switches of motor and casing
to the protection circuit of the whole equipment.
■
Check that the voltage of the power supply is correct; turn on power.
■
CC-types only
:
Push the ON button, to start the pump; unlock the EMO first, if applicable.
■
Adjust the flow regulator in the N
2
piping, until the flow is suitable.
If the water flow is too low, the temperatures of the pump body and the
motor will rise, and may cause rotor contact and other problems.
If the purge gas
flow is too low, it can cause oil backstream, pump corro-
siveness and byproducts.
CC-types only:
CC-type pumps are equipped with an EMO to enable the user to turn off
the pump in case of an emergency. The EMO signal may be accessed via
the potential-free contact EMO-2 (cf. circuit diagram, Fig. 3.7) for further
use within the customer provided control unit.
The EMO is not intented to be used as a regular switch for turning
off the pump !
4.1.1 Pumping of monoatomic Gas
Due to the higher adiabatic exponent K with monoatomic gases (e.g. argon)
and resulting higher compression temperatures please consult with the corre-
sponding customer service before pumping these gases to evaluate your
application.
CAUTION
NOTE
