Caution

The VFW41.. and VFL41.. butterfly valves require no maintenance.

WARNING
Before performing any service works on the valve or actuator:
  1. Switch off the pump and power supply
  1. Close the main shut-off valves in the pipe work
  1. Release pressure in the pipes and allow them to cool down completely

If necessary, disconnect electrical connections from terminals.

The valve must be re-commissioned only with the manual adjuster or the actuator correctly assembled.