Viking Pump TSM280: Duralobe (Discontinued) - Manual (Page 46)

Page : 44
4.3 Product Seal Fitting and Removal.
4.3.1 General Procedures for Fitting Mechanical Seals.
"Quick summary" of mechanical seal installation.
- Mechanical seals are precision engineered assemblies incorporating
finely lapped seal faces and seats. They must therefore be handled
with care and will not give optimum performance unless installed
carefully and according to instructions.
- Where mechanical seals are to be reused insure that seal components
are kept in their appropriate sets. Do not mix old and new seal faces
on the same seal.
- Remove any sharp corners and burrs that may damage any elastomers
such as o-rings or lip seals.
- Insure that all seal component fitting bores and housings are
thoroughly cleaned before installation.
- The seal faces and seats must be handled with care and cleaned
thoroughly before installation.
- Insure that seal faces are undamaged and the o-rings are not cut,
swollen or cracked.
- All o-rings should be lightly lubricated with a suitable lubricant (silicon
grease, soap etc.) before fitting but insure there is no excessive
amount of lubricant especially around the seal face area.
- When fitting PTFE encapsulated o-rings it is important to immerse
them in hot water for several minutes to soften them.
- Insure seal seats are mounted squarely in the rotorcase.
- Insure when installing seals with brittle faces such as silicon carbide
that extra care is taken.
- Do not use any excessive force to install a mechanical seal. If it is
difficult to position and assemble the seal then something is wrong.
- If you drop or damage a seal, do not install it before an inspection has
been carried out.
- Do not run a mechanical seal dry. WARNING