®
Repeat the operation with a new valve seat seal.
®
Observe the data specified for heating the valve seat seal.
®
The valve seat seal has been removed.
10.7.4 Lubricating Seals and Threads
Caution!
Damage to seals and threads
Damage to seals and threads can result in malfunction.
► Ensure that an adequate film of lubricant is applied. No grease residues
must be visible once the valve has been assembled completely.
► For product contact seals only use suitable greases and oils.
► Observe the safety data sheets issued by the lubricant manufacturer!
Carry out the following steps:
1.
Lightly grease the valve disk thread.
2.
Grease all seals – including the O-rings at the top and bottom of the actuator
piston rod – very thinly.
!
Do not grease V-ring and O-ring (TEFASEP gold valve seat seal).
®
Done
Hint!
GEA Tuchenhagen recommends Rivolta F.L.G. MD-2 and PARALIQ
GTE 703. These lubricants are approved for foodstuff and are resistant
to beer froth. They have the NSF-H1 (USDA H1) registration. They do
not affect the taste or the consistency of the products and are
compatible with the seals in contact with product.
PARALIQ GTE 703 can be ordered from GEA Tuchenhagen under
material no. 413-064, and Rivolta F.L.G. MD-2 can be ordered under
material no. 413-071. Using other types of grease can result in
malfunctions or in premature seal failure. The warranty will also
become null and void.
A Manufacturer's Declaration for these products can be obtained from
GEA Tuchenhagen if required.
A thin film of grease is required on the seals to ensure the proper
function of the fittings. It reduces friction and extends the service life
of the seals. This is absolutely harmless from a health and hygienic
point of view.
Running dry must be avoided!
10.8
Installation
Assemble the valve in reverse order of disassembly. Observe the notes and
instructions given in the following sections when doing so.
10.8.1 Installing the valve
Maintenance
Installation
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