4. Remove the stationary part of the mechanical seal (seat ring) from discharge
cover 163.
7.5
Reassembling the pump set
7.5.1 General notes/Safety regulations
CAUTION
Improper reassembly
Damage to the pump!
▷
Reassemble the pump (set) in accordance with the general rules of sound
engineering practice.
▷
Use original spare parts only.
Always reassemble the pump in accordance with the corresponding general assembly
drawing or exploded view. (
Check the O-rings for any damage and replace them by new O-rings, if required.
Always use new gaskets, making sure that they have the same thickness as the old
ones.
Always fit gaskets of asbestos-free materials or graphite without using lubricants
(e.g. copper grease, graphite paste).
Avoid the use of assembly adhesives, if possible.
Should an assembly adhesive be required after all, use a commercially available
contact adhesive (e.g. "Pattex") or sealant (e.g. HYLOMAR or Epple 33).
Only apply adhesive at selected points and in thin layers.
Never use quick-setting adhesives (cyanoacrylate adhesives).
Coat the locating surfaces of the individual components with graphite or similar
before reassembly.
When reassembling the pump set, tighten all screws/bolts as indicated.
7.5.2 Installing the mechanical seal
Always observe the following rules when installing the mechanical seal:
▪
Work cleanly and accurately.
▪
Only remove the protective wrapping of the contact faces immediately before
assembly takes place.
▪
Prevent any damage to the sealing surfaces or O-rings.
✓
The notes and steps stated in (
Section 7.5.1 Page 26) have been observed/
carried out.
✓
The assembled bearing as well as the individual parts are kept in a clean and
level assembly area.
✓
All dismantled components have been cleaned and checked for wear.
✓
Any damaged or worn parts have been replaced by original spare parts.
✓
The sealing surfaces have been cleaned.
1. Clean the seat ring location in discharge cover 163 and seat ring holder 476.
CAUTION
Elastomers in contact with oil/grease
Shaft seal failure!
▷
Use water as assembly lubricant.
▷
Never use oil or grease as assembly lubricant.
Sequence
Seal elements
Assembly adhesives
Tightening torques
Installing the mechanical
seal
7 Servicing/Maintenance
26 of 36
Trialine / Trialine Z
