Alfa Laval TE20B200, Инструкция по эксплуатации

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Instruction Manuall Toftejorg SaniJet 20 Electrically Driven Page 35
IM-TE91A794-EN6
Maintenance
(continued)
Base Unit
Dismantling of Outer tube
In order to dismantle the parts in the Outer tube, it is necessary first to release the Inner shaft (Pos.
12.8).
Warning: Retaining screw on side of Base housing (Pos. 12.6) must never be loosened, when
machine is mounted in tank unless down pipe is supported and Pressure line is
disconnected, as otherwise the complete Down pipe assembly will fall down.
1. Remove Retaining screw (Pos. 12.6). Loosen and unscrew with a M10 Hex key (Allen key). Pull
out Outer tube (Pos. 12.10) together with Inner shaft (Pos. 12.8) from Base housing (Pos. 12.5).
2. Turn Outer tube upside down. Hold Bevel gear (Pos. 12.13) and push Inner shaft (Pos. 12.8)
approx. 5 mm into Outer tube. Then rotate Inner shaft ¼ revolution, in order for pin in the shaft to
pass through grooves in Bevel gear. Remove Bevel gear (Pos. 12.13) and Ball ring (Pos. 12.12).
3. Rotate Inner shaft to pass grooves in Ball race (Pos. 12.11) and pull it out. Tip out Ball race from
Outer tube (Pos. 12.10).
4. If it is necessary to replace Bearing ring (Pos. 12.9) on Outer tube, pull it off. The Bearing ring
should not be removed unless worn or damaged. Wear on this part will increase leakage around
Down pipe and accordingly increase total flow rate. It is recommended to replace if diameter is
below ø38.7 mm. Diameter must never be below ø38.5 mm.
5. Remove Plain seal (Pos. 12.7) from Inner shaft (Pos. 12.8).
6. If necessary, replace Bearing bush (Pos. 12.14 and 12.15) in Base housing (Pos. 12.5).
Reassembling of Outer Tube
1. Mount Plain seal (Pos. 12.7) on Inner shaft (Pos. 12.8).
2. Turn Outer tube (Pos. 12.10) upside down. Fit Ball race (Pos. 12.11) into Outer tube. Make sure
that it is correctly placed in recess.
3. Mount Inner shaft (Pos. 12.8) from below into the Outer tube. Hold against Ball race (Pos. 12.11)
and fit Inner shaft pin through axial grooves. Place Ball ring (Pos. 12.12) and Bevel gear (Pos.
12.13) over Inner shaft on top of the Ball race (Pos. 12.11). Hold Bevel gear, rotate Inner shaft and
draw back to fit pin into grove in the end face of the Bevel gear.
4. Place Base housing (Pos. 12.5) upside down. Fit upper end of Inner shaft into Base housing. By
pressing at the lower end of Inner shaft push the entire assembly into Base housing. Tighten with
Retaining screw (Pos. 12.6).