6 Commissioning
Maschinenfabrik Reinhausen GmbH 2020
122
4983703/01 EN
VACUTAP
®
VV-Ex
2. Remove screw cap on air-vent valve E1 on the on-load tap-changer head
cover.
Figure 111: Air-vent valve E1
3. Use screwdriver to lift valve tappet on air-vent valve E1 and bleed on-load
tap-changer head.
Figure 112: Valve tappet
4. Seal air-vent valve E1 with screw cap (tightening torque 10 Nm).