Wilo -Flumen OPTI-TR 22 Instrucciones De Instalación Y Funcionamiento página 40

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9.6.3 Propeller replacement
4
3
Fig. 13: Propeller replacement
9.6.4 Replacing the mechanical seal on
the fluid side
4
2
Fig. 14: Replacing mechanical seals
40
Maintenance and repair
1 Propeller
1
2 Propeller attachment: internal hexagonal head screw and washer
3 Shaft
4 Mechanical seal
‡
Mixer set down on a firm surface and secured.
‡
Tools are ready for use.
1. Loosen and unscrew the propeller attachment. NOTICE! Fix the propeller in place with
suitable equipment.
2. Carefully remove the propeller from the shaft. CAUTION! The mechanical seal is now
no longer secured. Only operate the mixer with the propeller! If the mixer is oper-
2
ated without the propeller, the mechanical seal will be destroyed. If the mechanical
seal is faulty, oil escapes from the sealing chamber.
3. Clean the shaft and apply new lubricating grease.
4. Carefully slide the propeller back on as far as it will go.
5. Coat the interior hexagonal head screw with the thread-locking fluid, insert the washer
and screw into the shaft.
6. Tighten the propeller attachment. Max. tightening torque: see Appendix.
7. Turn the propeller by hand and check that it rotates easily.
▶ Propeller is changed. Check the oil in the seal housing and fill up if required.
1 Shaft
2 Mechanical seal: spring
3 Mechanical seal: Stationary ring
4 Seal housing
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Mixer set down on a firm surface and secured.
1
‡
Tools are ready for use.
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Oil drained from seal housing.
3
‡
Propeller removed.
1. Remove key from the shaft.
2. Remove the spring of the mechanical seal with support washer from the shaft.
3. Push the stationary ring of the mechanical seal out of the housing and remove from the
shaft.
4. Clean the shaft and check for wear and corrosion. WARNING! Contact customer ser-
vice if the shaft has been damaged!
5. Lubricate the shaft using wetted water or detergent. CAUTION! Do not use oil or
grease as lubricants!
6. Press in a new stationary ring for the mechanical seal into the housing using an assem-
bly unit. CAUTION! Do not tilt the stationary ring when pushing it in. If the stationary
ring is tilted or installed at an angle when it is pushed in, the stationary ring will
fracture. The mechanical seal can then no longer be used!
7. Insert new spring of the mechanical seal with support washer onto the shaft.
8. Clean the key and lay it in the groove of the shaft.
9. Mount propeller.
▶ Mechanical seal is replaced. Fill oil in the seal housing.
WILO SE 2021-10