21
Mounting cover
Attention!
Equipment may leak if the gasket is
damaged.
It is therefore essential that you
always insert a new gasket before re-
attaching the cover.
Make sure that the cover is not tilted
or skewed when refitted.
Clean the gasket surfaces of the cover and
body.
Apply heat resistant lubricant to the threads and
bearing faces of the screws.
The lubricant must have the same properties as
OKS
®
217.
Put a new body gasket (3) onto the body (2).
Insert the eight stud bolts (5) into the bores of
the body.
Refit the cover (6) onto the body such that the
name plate (8) points upwards.
The torque required for tightening the eight
hexagon nuts (1) depends on the type.
Tighten the hexagon nuts for UNA 43 with a
torque of 80 Nm.
Tighten the hexagon nuts for UNA 46 with a
torque of 230 Nm.
Fasten the hexagon nuts with the specified
torque.
If necessary, mount the measuring electrode as
described on page 14.
