GESTRA UNA 38, Original Installation Instructions

Page: 25 / 48

25
To install the cover of the UNA 39, proceed as
follows:
 Make sure that the control unit is correctly
fitted.
The float must be able to move upwards.

Lubricate the threads and contact surfaces of
the set screws with temperature-resistant
lubricant.
The lubricant must have the same properties as
OKS
®
217.
 Insert a new body gasket (17) in the body (15).

Make sure that the twelve set screws (16) are
securely screwed in the holes in the body.

Position the cover (19) on the twelve set screws
(16).
The set screws must fit through the holes in the
cover. The drainage screw plug (24) must face
downwards.
 Place the twelve sleeves (22) on the set screws.

Screw the twelve hex nuts (23) onto the set
screws.

Tighten the hex nuts to a torque of 340 Nm.