7 Servicing/Maintenance
39 of 52
Etaline-R
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.
Sequence
Always reassemble the pump in accordance with the corresponding general assembly
drawing or exploded view.
Seal elements
Check O-rings for any damage and replace 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).
Assembly adhesives
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.
Tightening torques
For reassembly, tighten all screws and bolts as specified in this manual.
(
ð
Section 7.6, Page 42)
7.5.2 Installing the bearings
1.
Slide (Nilos) rings 500.21 along the shaft until they abut the shaft shoulder,
observing the correct direction of assembly.
2.
Press ball bearing 321 onto shaft 210.
3.
Fill bearing with grease.
(
ð
Section 7.2.2.3.1, Page 34)
4.
Insert (Nilos) ring 500.18 and fit circlip 932.20 in shaft 210.
5.
Slide pre-assembled shaft into bearing bracket 330 and fit circlip 932.02.
6.
Slide thrower 507 onto the shaft.
7.
Screw casing cover 161 to bearing bracket 330 using hexagon socket head cap
screws 914.03.
7.5.3 Installing the mechanical seal
The following rules must be observed when installing the mechanical seal:
▪
Work cleanly and accurately.
▪
Prevent any damage to the sealing surfaces or O-rings.
