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GA02330_002_06 - 01/2010 - © Oerlikon Leybold Vacuum
Operation
2.2.1 Intake Side
The pump has an internally-threaded intake flange. Using suitable connecting
elements (see Fig. 3 and Section 1.4), the pump can be connected to the
vacuum system.
The cross-section of the intake line should be at least the same as the intake
port. If the intake line is too narrow, it reduces the pumping speed.
We recommend applying either LOCTITE or TEFLON tape to the screwed unions
so that they are vacuum-tight (especially if gases are dangerous).
- Pump should be connected to inlet line without any tension. Use flex lines or
pipe unions in your inlet and exhaust lines so that they can be easily removed
for pump maintenance.
- The maximum pressure at the inlet may not exceed atmospheric pressure
(about 1013 mbar). Never operate the pump in the presence of over pressures
at its intake.
- Type of materials used for mounting of canalisations should take care of
pumped gases. It is the same for its tightness.
If the process gas contains dust or particles, it is absolutely essential to install a
dust filter in addition to the dust trap supplied (see Section 1.4). We recommend
to install the dust filter horizontally using the T-piece (3/13) or the elbow (3/14).
This ensures that when removing the filter, no particle falls into the intake port.
You have a choice of four cartridges for the optional inlet filters. The metal
cartridge prevents solid particles such as paper or plastics from entering the
pump ; the paper and polyester cartridges remove small particles such as dust
and powder down to one micron ; the activated carbon cartridge absorbs
chemical vapors of acids, solvents, etc. If the carbon cartridge was stored in a
damp place, bake it for 2 hours at 212°F (100°C) before use.
When pumping vapors, we recommend installing condensate traps or
condensers on the intake side (see Section 1.4).
By pumping of dangerous gases, inlet line must be tight.
No particles or liquids may enter in the pump.
2.2.2 Exhaust Side
The SOGEVACs have integrated exhaust filters which, even at a high gas
throughput, trap the oil mist and guarantee exhaust gas free of oil mist. If
the exhaust filters are clogged, pressure relief valves opens and the filters are
bypassed. As a result, the proportion of oil in the exhaust gas as well as the
pump’s oil consumption rise. Installing new exhaust filters will correct this
problem. (See Section 3.9)
This situation must be resolved by changing the exhaust filters. It is under
utiliser’s responsability to assure maintenance on materiel to avoid any
trespassement of the limits autorised by regulations.
Check in the individual case whether an exhaust line is necessary and/or
prescribed. Volatile substances can pass through the filter. Depending on the
processed gas, we recommend connecting an exhaust line ; this is always
necessary when the exhaust gases are dangerous.
Warning
Warning
