Repairs - Wilo Rexa CUT GI Instrucciones De Instalación Y Funcionamiento

en-US
Fig. 9: Sealing chamber: Oil change
9.6

Repairs

9.6.1 Instructions on using screw lock-
ing devices
32
Maintenance and repair
+/- Sealing chamber screw plug
‡
Protective equipment has been put on!
‡
Pump is removed and cleaned (if necessary decontaminated).
1. Lay the pump horizontally on a firm surface. The screw plug is facing upwards. WARN-
ING! Danger of crushing hands. Make sure that the pump cannot fall over or slip!
2. Unscrew screw plug slowly but not fully. WARNING! Overpressure in the motor! If you
hear hissing or whistling sounds, do not turn any further! Wait until the pressure has
fully dissipated.
3. Once the pressure has fully dissipated, fully unscrew screw plugs.
+/-
4. Place a suitable tank to collect the operating fluid.
5. Drain operating fluid: Rotate the pump until the hole points downwards.
6. Check operating fluid: If there are metal filings in the operating fluid, inform customer
service!
7. Pour in operating fluid: Rotate the pump until the hole points upwards. Pour operating
fluid into the hole.
⇒ Adhere to the information for operating fluid type and quantity!
8. Clean the screw plug, replace the seal ring, and screw it back in. Max. tightening
torque: 8 Nm (5.9 ft lb)!
WARNING
Attached macerator: sharp edges on the cutting plate and rotating blade!
The macerator can cause amputation of limbs! Wear safety gloves to protect against cuts
and never reach into the macerator!
WARNING
Hand, foot or eye injuries due to a lack of protective equipment!
During work there is a risk of (serious) injury. Wear the following protective equipment:
• Safety gloves that protect against cuts
• Safety shoes
• Closed safety goggles
The following preconditions must be met prior to starting repair work:
▪ Pump cooled down to the ambient temperature.
▪ Pump is switched voltage-free and secured against being activated inadvertently.
▪ Pump cleaned thoroughly and disinfected (if required).
For repair work the following generally applies:
▪ Wipe up spillage quantities of fluid and operating fluid immediately!
▪ Always replace O-rings, gaskets and screw locking devices!
▪ Observe the tightening torques in the appendix!
▪ Never use force when carrying out this work!
A screw locking method can be used on the screws. Ex-factory, the screws are locked using
two different methods:
▪ Thread-locking fluid
▪ Mechanical screw locking device
WILO SE 2019-02