KSB 4EYS, Installation & Operating Manual

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5 Installation/Dismantling
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4EYS / 4EYT
1974.91/01-EN
– Shaft speed > 750 rpm to 1000 rpm: 0.15 mm max.
– Shaft speed > 1000 rpm to 1500 rpm: 0.08 mm max.
– Shaft speed > 1500 rpm to 3000 rpm: 0.025 mm max.
▪ The seal faces are clean and have not been touched with fingers.
▪ The mechanical seal is in proper condition and complete.
▪ The elastomers are free from any contamination, cracks, softening, hardening,
stickiness and discolouration.
▪ The mechanical seal has been placed down on a clean and level surface.
5.3 Installing the mechanical seal
The rules of sound engineering practice and the pump manufacturer's general
provisions apply. Tidiness and cleanliness are essential for proper execution of the
installation work.
CAUTION
Use of grease or other permanent lubricants
Torque transmission impeded / overheating of and damage to the pump!
▷
Never use grease or other permanent lubricants for fitting the torque-
transmitting elements of a mechanical seal.
▷
Use soft soap to reduce any friction caused during assembly.
▷ Never coat the mechanical seal faces with grease or oil.
ü The operating manual for the pump set is on hand.
ü
The pump has been prepared in accordance with the operating manual for
installing the mechanical seal.
ü The mechanical seal and assembly aids are on hand.
ü
The relevant documentation for installing the mechanical seal is being observed.
ü The back pull-out unit has been removed from the pump casing and safely
positioned and secured in a horizontal position.
ü The original 4EYS / 4EYT mechanical seal is fully assembled and undamaged.
NOTE
If any installation instructions or an installation sequence are specified in the
product literature of the pump/machinery into which the mechanical seal is to be
installed, they must be observed.
1. Properly remove any corrosion or wear.
2. Clean the seal faces with a suitable paper tissue and ethyl alcohol.
3. Apply a suitable lubricant to O-ring 412.52 and mating ring carrier 476 of the
pump.
4. Position O-ring 412.52 on mating ring 475.
5. Press mating ring 475 together with O-ring 412.52 into its seat on mating ring
carrier 476. If necessary, use a spacer sleeve and elastic intermediate element to
protect the seal faces.
6. Check the seal face for any damage. Clean the seal face again if required.
7. Check that the mating ring is properly seated (face run-out/perpendicular to
shaft 210).
8. Wet O-ring 412.53 and the corresponding surface on shaft 210 with a suitable,
permanent lubricant.
9. Slide the rotating assembly onto shaft 210 until it does not go any further.
10. Observe/verify installation dimension L1N (4EYS) and L1K (4EYT).