3.3 Connecting the Intake and Exhaust Lines
3.3.1 Intake Lines
Pay attention to the following rules when connecting the vacuum pump and
the vacuum system:
For the lowest vacuum and the best pumping speed, we suggest to use the
shortest pipe, the least elbow, if possible, with the biggest diameter to
reduce the pipe line loss.
The intake lines must be clean. Connect the intake line to the pump. We rec-
ommend using bellows on the top of the pump for vibration absorption.
Support the intake lines.
Align the bellows. Do not overstress the bellows. Too much stress on the
bellows will cause them to drop out untimely and thus leading to leaks in
the system.
Check for leaks after installing the pump. A leak may lead to a dangerous
discharge of hazardous substances or to unpredictable reactions with air
admitted into the pump.
When choosing and installing the vacuum pumps for harsh processes or for
processes of special applications, like harsh furnace process, toxic or explo-
sive gas process, please check in advance with the engineers of Leybold;
when necessary, we suggest installing a trap at the pump inlet or outlet port
to prevent any safety accidents.
Ensure that no items like welding beads, bolts, nuts, washers, pieces of
wire, for example, enter into the inlet.
3.3.2 Exhaust Lines
Connect the exhaust line to the pump system‘s exhaust connection. Use bel-
lows to eliminate tension and vibration in the line. If applicable the exhaust ell-
bow can be detached and turned in 90° angels for an exhaust transport
according to customer-specific needs (cf. Fig.1.9). In this case ensure to
retighten the 4 bolts, and to conduct a leak tightness check on the exhaust.
DANGER
NOTICE
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