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Installation and operating instructions • Wilo-Flumen OPTI-TR 50-3 ... 120-1, Wilo-Flumen EXCEL-TRE 50-3 ... 90-2 • Ed.01/2022-07
9.6.3
Propeller replacement for OPTI-
TR 50-3/60-3/80-3 and EXCEL-
TRE 50-3/60-3
1
2
3
4
5
6
7
Fig. 15:
Propeller replacement for OPTI-TR/
EXCEL-TRE 50-3 to 80-3
1
Propeller
2
Propeller attachment: Interior hexagonal head screw and washer
3
Shaft
4
Mechanical seal
5
Packing sleeve
6
Pressure disc
7
Retaining ring
✓
Mixer set down on a firm surface and secured.
✓
Tools are ready for use.
✓
Forcing screw M16 (article number: 6037091) for OPTI-TR/EXCEL-TRE 50-3, 60-3, 90-2
and 120-1.
✓
Forcing screw M20 (article number: 6010679) for OPTI-TR 80-3.
✓
Loctite 242 screw locking device.
✓
Grease
1.
Loosen and unscrew the propeller attachment.
NOTICE! Fix the propeller in place with
suitable equipment.
2.
Check if the retaining ring is positioned correctly. The retaining ring secures the pressure
disc.
3.
Carefully remove the propeller from the shaft: Screw the forcing screw into the pressure
disc. This presses the propeller from the shaft.
CAUTION! The mechanical seal is no
longer secured!
4.
Clean the shaft and apply new lubricating grease.
5.
Carefully slide the propeller back on as far as it will go.
6.
Securing the propeller: Coat the interior hexagonal head screw with the thread-locking
fluid, insert the washer and screw it into the shaft.
7.
Tighten the propeller attachment. Max. tightening torque: see appendix.
8.
Turn the propeller by hand and check that it rotates easily.
▶
Propeller is changed. Check the oil quantity in the pre-chamber and if necessary, top
up oil.
9.6.4
Propeller replacement for OPTI-
TR/EXCEL-TRE 90-2
1
2
3
4
5
6
7
8
9
Fig. 16:
Propeller replacement for OPTI-TR/
EXCEL-TRE 90-2
1
Hub screw cap
2
O-ring
3
Propeller
4
Shaft
5
Mechanical seal
6
Packing sleeve
7
Pressure disc
8
Retaining ring
9
Propeller attachment: Interior hexagonal head screw and disc
✓
Mixer set down on a firm surface and secured.
✓
Tools are ready for use.
✓
Forcing screw M16 (article number: 6037091) for OPTI-TR/EXCEL-TRE 50-3, 60-3, 90-2
and 120-1.
✓
Loctite 242 screw locking device.
✓
Grease