24
Exchanging Thermovit regulator
Only the complete Thermovit regulator unit can be
exchanged.
Remove the cover as described on page 18.
Unscrew the Thermovit regulator off the body as
described on page 18.
Fasten the Thermovit regulator with the
tightening torque indicated on page 19.
DN15 to DN25: 90 Nm
DN40: 140 Nm.
Attach cover to the equipment as described on
page 18.
Exchanging gasket
Remove the cover as described on page 18.
Remove the gasket from the body.
Attention!
Dirt deposits on gasket seating surfaces
may result in leaking of the equipment.
Clean seating surfaces before
inserting a new gasket.
Clean gasket seating surfaces.
Insert a new gasket in the body.
Attach cover to the equipment as described on
page 18.
Exchanging external setting device
To exchange the external setting device proceed as
follows:
Attention!
Equipment may be damaged if screwdriver
is applied to the scale.
Using a screwdriver may cause damage to
the scale of equipment type BW 31.
Make sure that the screwdriver does
not touch the scale when applying it to
the external setting device.
Unscrew the external setting device from the
cover.
Attention!
Dirt deposits on gasket seating surfaces
may result in leaking of the equipment.
Clean seating surfaces before
inserting a new gasket.
Attention!
Equipment may leak if the gasket is
damaged.
If is therefore essential that you
always insert a new gasket before re-
attaching the external setting device.
Make sure that the external setting
device is not tilted or skewed when
refitted.
