Omega
58
Shaft seal -- mechanical seals -- Type Crane 58U and 58B
Description
The mechanical s eals, 58U and 58B, are precision--made and
must be treated accordingly. The contact faces are lapped to
a high degree of accuracy and prior to despatch they are cove-
red in a protective sleeve to prevent damage. If the protective
sleeve is removed for installation purposes, then great care
must be taken to avoid any damage to the finely finished, lap-
ped surfaces.
Whenever replacing worn out or damaged mechanical seals,
the section of the shaft or sleeve which will accept the new seal
must be cleaned and oiled.
Preparation for installation
1. The installation dimensions and tolerances must comply
with those outlined in the relevant literature.
2. The cover which will accept the seat ring must be checked
with regard to depth and installation dimensions.
780 Retainer 578 Balanced face
305 Grub screw 096 Snap ring
582 (092) Spring 500 Seat type BP
583 Thust ring 501 Seat ring
123 O-ring 902 Seat type BO
574 Rotating face 123 (R) O-ring
564 Support ring
Installation and operation
1. Clean and lightly lubricate the shaft / sleeve with a suitable
lubricant.
Caution:
Sealing elements manufactured in EP --Elastomer materials
must not come in contact with mineral oil and grease.
2. Push on the rotating unit applying light manual pressure.
3. Push the s eat ring together with the joint ring into the cover
applying even manual pressure. The joint ring shall also be
lubricated using a suitable lubricant.
4. The contact faces must be cleaned prior to installation into
the machine. Tightenthe cover bolts evenly. Overtightening
can affect the true running of the rubbing faces and there-
fore have an adverse effect on the functioning of the mecha-
nical seal.
5. Manually turn the s haft. Fill the machine whilst simulta-
neously monitoring the v enting equipment within the seal
area. Check the circulation pipe.
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