Wilo -EMU TRE 36 Serie Instrucciones De Instalación Y Funcionamiento página 313

9.6.3 Propeller replacement
4
3
Fig. 15: Propeller replacement
9.6.4 Replacing the mechanical seal on
the fluid side
4
2
Fig. 16: Replacing mechanical seals
Installation and operating instructions Wilo-EMU TR 14-40
Maintenance and repair
1 Propeller
1
2 Propeller attachment: Interior hexagonal head screw and washer
3 Shaft
4 Mechanical seal
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Mixer set down on a firm surface and secured.
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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
2
is operated 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 it 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
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Tools are ready for use.
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Oil drained from seal housing.
3
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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 its seating and remove from
the shaft.
4. Clean the shaft and check for wear and corrosion. WARNING! Contact customer
service 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 as-
sembly 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 station-
ary 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 the propeller.
▶ Mechanical seal is replaced. Fill oil in the seal housing.
en
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