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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
1.
Place mixer on a firm work surface in a horizontal position.
CAUTION! Material damage! Do not set the mixer down on the propeller! Always
place the mixer on a platform.
2.
Secure the mixer against falling over and slipping.
3.
Position a suitable tank to collect the operating fluid.
4.
Remove the screw plug from the filler hole:
⇒
1 = pre-chamber
⇒
2 = gear chamber
⇒
3 = sealing chamber
5.
Unscrew the screw plug of the drain hole and drain the operating fluid:
NOTICE! Flush the pre-, gear and sealing chamber to drain it completely.
⇒
4 = pre-chamber
⇒
5 = gear chamber
⇒
6 = sealing chamber
6.
Check the operating fluid:
⇒
Operating fluid clear: Operating fluid can be reused.
⇒
Operating fluid contaminated (black): fill with new operating fluid.
⇒
Operating fluid milky/cloudy: Water in oil. Minor leakage through the mechanical
seal is normal. If the ratio of oil to water is less than 2:1, the mechanical seal may be
damaged. Change the oil and check again four weeks later. If water is again present
in the oil during the second check, contact customer service!
⇒
Metal chips in the operating fluid: Contact the customer service!
7.
Clean the drain hole screw plug, change the seal ring and replace the screw plug.
Max.
tightening torque: 8 Nm (5.9 ft·lb)!
8.
Pour the operating fluid through the filler hole.
⇒
Comply with the specifications for operating fluid type and quantity!
9.
Clean the filler hole screw plug, change the seal ring and replace the screw plug.
Max.
tightening torque: 8 Nm (5.9 ft·lb)!
10. Restore corrosion protection: Seal screw plug, e.g. with Sikaflex.
9.5.9
General overhaul
The following components are checked for wear and damage as part of general mainten-
ance:
•
Motor bearings
•
Gear bearing and planetary gear speed
•
Propeller
•
Shaft sealings
•
O-rings
•
Connection cable
•
Fitted accessories
Damaged components are replaced with original parts. This will ensure correct operation.
The general overhaul is performed by the manufacturer or an authorised service centre.
9.6
Repairs
WARNING
Risk of injury from sharp edges!
Sharp edges can form on the propeller blades. There is a danger of cuts
and similar injuries!
• Wear protective gloves!
CAUTION
Only operate the mixer with the propeller!
The propeller secures the mechanical seal in place. If the mixer is oper-
ated without the propeller, the mechanical seal will be destroyed!
