Pfeiffer Vacuum Pascal 2033 C1, Руководство по эксплуатации

Страница: 37 / 71

EN – 36
Recovery of oil
(high pressure and cycling)
For intermittent
pumping
When the pump operates at high pressure, the oil heats up, becomes more fluid and is
flushed out of the functional block by the gas stream.
Oil losses at the exhaust are increased.
For cyclical pumping
or continuous
pumping at high
pressure
Example:
OME 40HP+ oil mist eliminator with ODK236 oil recovery device.
An electrovalve ensure the tightness when the pump is stopped.
If the pump only operates for a very short time at high pressure, the lubricating oil
is replaced when the pump returns to low pressure. The use of a oil mist eliminator
prevents losses due to intermittent high pressure operation.
If the pump operates at high pressure in a cyclical fashion, oil consumption may reach
sufficiently high levels (according to the pumped volume and pumping cycle rates)
causing the level to drop in the oil case.
There is then a risk of seizure due to a lack of oil. In addition, the high flow of gas
passing through the eliminator prevents oil from returning to the oil case.
In order to pump in these conditions, the pump must be equipped with an oil mist
eliminator and an oil draining kit, which enables oil recovery via the gas ballast (
see
accessories page 14
).
In case of oil recovery via the pump inlet port, consult us.
Outlet
Gas ballast
Electrovalve
OME 40HP+