5. Remove the valve flap.
6. Dismantle the circlip using the circlip pliers.
7. Screw the spindle out of the valve housing.
–
Be careful with the O-rings.
8. Clean all parts.
–
Clean especially the bores in the valve housing.
9. Replace the parts according to the spare parts pack.
Assembling gas ballast valve with inert gas connection
1. Place the valve flap with the arched side facing downwards into the screw cap.
2. Screw the screw cap and the valve housing hand tight.
3. Fit the G 1/8" hose connection onto the valve housing.
–
Be careful with the o-ring.
–
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 screws.
–
Tightening torque: 1.0 Nm.
7. Fit the spindle in the valve housing.
–
Be careful with the O-rings.
8. Insert the circlip.
9. Install the hose of the inert gas line.
7.6 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 – D2 – only.
It is not possible to change from P3/D2 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
45/64
To Next Page
Loading...