KNF N 820.3 FT.40.18, Руководство по эксплуатации

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Servicing Laboratory vacuum pumps N 8__.3 FT.40.18
28 Translation of original Operating Instructions, English, KNF 121350-121429 11/18
The concave side of the first three disc springs must point
away from the screw head, the next three towards it (see fig.
11, detail X).
5. Gently tighten the screws ( 11 ), evenly and diagonally.
6. Turn the fan to check that the pump rotates freely.
7. Now tighten screws (
11 ) hand-tight.
8. Tighten each of the screws (
3
) a half-turn more (tightening
torque: 20 Ncm).
9. Carry out steps 1 to 8 for the second pump head.
10. Refit the pneumatic head connection: Place tube onto the
connecting part of the angle fitting, turn angle fitting to a
straight position and tighten the union nut.
Final steps
1. Refit the fan cover.
2. Reconnect suction and pressure line to the pump.
3. Reconnect the pump to the electricity supply.
If you have any questions about servicing call your KNF technical
adviser (see last page for contact telephone number).