Gasket Replacement - Riello SP20-DN32 Manuel D'utilisation Et D'entretien

ENGLISH

5.7 - Gasket replacement

• Before starting, check the manufacturing date of the gas-
kets, printed on the relevant date stamp (Fig.5). Please note
that the gaskets must not be stored for more than 6-12
months (see chapter 2 - STORAGE).
• Remove the old gasket without using cut-
ting tools, which could irreparably dam-
age the plate.
• Make sure that the plate and gasket are
thoroughly clean and dry alongside the
gasket slot.
5.7.1 - Plug-In® Design gaskets
• Press the gasket onto the plate (Fig. 6), making sure that
the leak detector vents, "A", are facing up and check that
the Plug-In® tabs are hooked into their respective notches
(Fig.7). Make sure that the gasket is properly seated in its
notch, then turn the plate over to check again that all the
Plug-In® tabs are correctly in place.
5.7.2 - Plug-In® Design gaskets which may require the use
of glue
• Plug-In® Design gaskets, for initial plates, intermediate turn-
ing plates (for multi-pass heat exchangers only) and final
plates, may require a limited use of glue. These types of
plates, complete with gaskets mounted at the factory, can
be supplied as spare parts. Alternatively, for the substruc-
tion of the gaskets, proceed as described below.
46
Fig.5
Fig.6
Initial plate
Cut two gaskets along the vertical axis and use the two parts
with sealing rings inside the holes (Fig.8) to form a complete
initial gasket. Discard the other two halves.
A: Leak detector vents
are notches in the
surfaces of the gasket
sections around the
portholes which
vent any leaks to the
atmosphere so that
they can be detected.
Fig.7