Klarstein FARGO Manual page 41

Unusual noises Appliance is not level.
The appliance is touching the
wall or other objects.
A component, e.g. a pipe, on
the rear of the appliance is
touching another part of the
appliance or the wall.
Re-adjust the feet.
Move the appliance slightly.
If necessary, carefully bend the
component out of the way.
EN
41