Immergas VICTRIX HYBRID Instructions And Recommendations page 53

Pump release.
If after a long period of inactivity, the circulator is blocked, adjust the screw in the centre of the head in order to manually release the mo-
tor shaft.
Take great care during this operation to avoid damage to the motor.
Bypass Regulation (Ref. 23 Fig. 40):
The appliance leaves the factory with the bypass closed.
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