1. Remove the valve of recirculation of the fulfilled gases, as it is described above in the Head Power systems, release.
2. Disconnect all tubing from the valve, then blow compressed air through the valve. Please note that compressed air must not be passed through the diaphragm of the electromagnetic unit, as it may be damaged.
3. Establish the valve of recirculation of the fulfilled gases, as it is described in the Head Power systems, release.