LEYBOLD 111065, Operating Instructions Manual

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5.3 Connect the Pump
▪
Remove the caps. We recommend that you retain the caps for decommissioning of
the pump.
▪
During installation work on the intake and discharge lines do not subject flanges to
any excessive stresses.
Intake side
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At the intake side, connect the pipework to the vacuum chamber.
▪
The intake line must be clean. Deposits in the intake line can degas and impair the
vacuum. The connecting flanges must be clean and undamaged.
Note:
Do not allow the ingestion of any objects (screws, welding beads, nuts, washers,
pieces of wire, etc.) through the intake port of the pump.
Exhaust line
▪
Connect the exhaust line with a hose/pipework to the pump, or when operating the
pump without a connected exhaust line, operate the pump only in a well ventilated
room.
▪
The cross-section of the exhaust line must at least match the inside diameter of the
connections.
▪
When pumping vapors, we recommend connecting a condensate separator at the
exhaust. The exhaust lines should be laid so that they drop down and away, thereby
preventing condensate from flowing back into the pump.
DANGER:
The operator must check, whether the pumped gases will lead to safety risks on the
environment if the pump is operated without an exhaust line (i.e. risk of suffocation,
risk of slipping due to condensing vapors, etc.).
CAUTION:
Smaller cross sections may cause an undesirable overpressure within the system. Do
not start the pump with a constricted or blocked exhaust. Ensure that any valves or
blocking devices in the exhaust line are open. Clogged exhaust lines will reduce the
available pumping speed, increase temperature and cause overloading of the pump
motor or a dangerous overpressure within the system. There is the risk of bursting.
The pump can generate pressures up to 1.5 bar (g) at the exhaust, when the
discharge line is shut.
5.4 Removal of Pump Cover
In order to access the electrical terminals, the purge gas or gas ballast connections the
pump cover has to be removed. To do the pump maintenance, remove only the front
cover of the pump.
To remove the pump cover, do the following steps:
1. Allow the pump to cool down in order to avoid receiving burns from hot surfaces
underneath the cover.
2. Disconnect the inlet flange from the vacuum system.
3. Remove the four side screws of front pump cover. Figure: Remove the cover on
page 15 .
300766038_002 - © Leybold
14
Installation