Wilo -Flumen OPTI-TR 22 Instrucciones De Instalación Y Funcionamiento página 39

9.6 Repairs
9.6.1 Instructions on using screw lock-
ing devices
9.6.2 Which repair work may be carried
out
Installation and operating instructions Wilo-Flumen OPTI-TR 20-1, 22, 28-1, 30-1, 40-1, Wilo-Flumen EXCEL-TRE 20, 30, 40
Maintenance and repair
WARNING
Risk of injury from sharp edges!
Sharp edges can form on the propeller blades. There is a danger of cutting injuries!
• Wear protective gloves!
The following preconditions must be met prior to starting repair work:
ƒ
Wear protective equipment! Observe the work regulations.
–
Safety shoes: Protection class S1 (uvex 1 sport S1)
–
Protective gloves: 4X42C (uvex C500)
–
Safety goggles: uvex skyguard NT
For detailed marking of frame and disc, see the section on "Personal protective equip-
ment [} 8]".
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The mixer has been thoroughly cleaned and disinfected.
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Motor cooled to ambient temperature.
ƒ
Workplace:
–
Clean, good lighting and ventilation.
–
Firm and stable work surface.
–
Secured against falling over and slipping.
CAUTION! Do not set the mixer down on the propeller! Provide an appropriate platform.
NOTICE! Only carry out the repair work described in these installation and operating in-
structions.
For repair work, the following applies:
ƒ
Wipe up spillage quantities of fluid and operating fluid immediately!
ƒ
Always replace O-rings, gaskets and screw locking devices!
ƒ
Observe the tightening torques in the appendix!
ƒ
The use of force is strictly prohibited!
A screw locking method can be used on the screws. Ex-factory, the screws are locked using
two different methods:
ƒ
Thread-locking fluid
ƒ
Mechanical screw locking device
Always replace the screw locking device!
Thread-locking fluid
When using thread-locking fluid, opt for a medium-strength product (e.g. Loctite 243). This
type of compound can be loosened with increased force. If the screw cannot be loosened,
then the compound must be heated to approx. 300 °C (572 °F). Clean the components thor-
oughly after dismantling.
Mechanical screw locking device
The mechanical screw locking device consists of two Nord-Lock wedge lock washers. The
screw connection is secured by the clamping force.
ƒ
Propeller replacement
ƒ
Replacement of mechanical seal on the fluid side.
ƒ
Replacement of the frame.
ƒ
Replacement of mounting bracket for ground installation.
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