Assemble the gas ballast valve with flushing gas connection
1. Determine the curve of the valve flap and place the valve flap in the screw cap with the curved
side facing downwards.
2. Screw the screw cap and the valve housing hand tight.
3. Fit the G 1/8" hose connection onto the valve housing.
– Tightening torque:
3.0 Nm
.
4. Slide the O-ring over the screw cap up to the stop.
5. Screw the valve housing to the vacuum pump.
6. Tighten the screws.
– Tightening torque:
1.0 Nm
.
7. Fit the spindle in the valve housing.
8. Insert the circlip.
7.7 Changing the operating fluid type
Possibilities for changing the operating fluid type
The operating fluid type can be changed between mineral operating fluid –
P3
– and syn-
thetic operating fluid –
D1
– only.
It is not possible to change from
P3/D1
to
F4/F5
or vice versa.
Required consumables
● 3 times the filling quantity of the new operating fluid
Changing the operating fluid type
1. Change the operating fluid with the new operating fluid
twice
in order to rinse the vacuum pump.
2. Clean any accessories if necessary, such as oil mist filter or oil return, and replace their filter ele-
ments.
3. Fill the vacuum pump with operating fluid to one third full.
4. Note the currently used operating fluid type at a suitable location on the vacuum pump, e.g. on the
rating plate.
Maintenance
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