To install the control unit of the UNA 39, proceed as
follows:
Fit a new regulator gasket (43) to the control
unit.
Position the control unit (18) on the body (15).
Screw in the two Allen screws (44).
Tighten the Allen screws to a torque of 40 Nm.
The set screws in the body are not shown
in the diagram for reasons of clarity.
Attach the cover to the body as described on
page 24.
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