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Installation and operating instructions • Wilo-Rexa MINI3 • Ed.03/2022-05
11
If the pump remains installed, observe the following points:
•
Protect pump from frost and ice:
–
Immerse the pump completely in the pumped fluid.
–
Min. ambient temperature: +3 °C (+37 °F)
–
Min. fluid temperature: +3 °C (+37 °F)
•
If the pump will not be used for a prolonged period, switch on
pump and carry out one pumping process every 2 months to
prevent encrustations and clogging. Only carry out the pumping
process under suitable operating conditions!
If the above points are not guaranteed, remove the pump!
7.2
Portable wet well installation
1.
Switching off the pump: Disconnect the plug.
2.
Lift the pump by the handle out of the operating space.
3.
Loosen the hose clip and pull the pressure hose off the dis-
charge port.
4.
Coil up the connection cable and store it with the pump.
5.
Clean pump and pressure hose thoroughly.
8
Cleaning
•
Wear protective equipment!
The protective equipment prevents contact with germs that are
hazardous to health and the disinfectant.
•
If a disinfectant is used, follow the manufacturer's instructions!
–
Wear protective equipment according to the manufacturer's
instructions! If in doubt, ask your specialist dealer.
–
Inform all persons about the disinfectant and how to use it
correctly!
•
Drain the water used for cleaning into the sewage system.
8.1
Clean pump
✓
Pump removed.
✓
Disinfectant is available.
1.
Ensure that the plug or bare cable end is packed and stored in
a watertight manner!
2.
Rinse the pump and cable under clean, running water.
3.
Guide the water jet inwards through the pressure port to clean
the impeller and pump interior.
4.
Rinse attachments such as the discharge pipe and pressure
hose with clean, running water.
5.
Flush dirt residue on the floor into the sewage drain.
6.
Allow the pump to dry out.
7.
Clean plug or bare cable end with a damp cloth!
▶
Pump has been cleaned. Pack and store the pump.
NOTICE! If the suction port is very contaminated, remove the
cover plate for thorough cleaning!
8.2
Cleaning the pump interior
WARNING
Sharp edges on the impeller and suction port!
Sharp edges can form on the impeller and suction
port. There is a danger of cuts and similar injuries!
• Wear protective gloves!
In the case of severe dirt and encrustations, remove the cover plate
on the suction port and clean the pump interior.
1.
Place the pump on a firm surface in a horizontal position.
2.
Secure the pump against slipping!
3.
Unscrew the 3 fastening screws on the cover plate.
4.
Remove the cover plate.
5.
Rinse the pump interior with clean, running water. Remove
solids by hand.
6.
Check the O-ring on the suction port. If the O-ring is damaged
(cracks, porosity, crushed areas), replace the O-ring.
7.
Position the cover plate on the suction port.
8.
Fully screw in the 3 fastening screws.
NOTICE! Replace worn
screws!
▶
Pump interior is cleaned and cover plate has been reat-
tached. Complete the cleaning work.
9
Maintenance
•
Wear protective equipment!
•
Only perform the maintenance work described in these installa-
tion and operating instructions.
•
Carry out maintenance work in a clean, dry and well-lit location.
•
Use only original parts obtained from the manufacturer. The use
of any non-original parts releases the manufacturer from any li-
ability.
•
Collect any leakage of fluid and operating fluid immediately.
•
Dispose of the operating fluid at certified collection points.
9.1
Operating fluid
•
Capacity: 220 ml (7.4 US.fl.oz)
•
Interval for oil change: After 720 operating hours or 1x per year
•
Oil types (ISO VG class 32):
–
ELFOLNA DS 22
–
Shell Turbo T 32
9.2
Oil change
1
Fig. 3: Sealing chamber oil change
1
Sealing chamber screw plug
✓
Wear protective gloves!
✓
Pump is removed, cleaned and if necessary disinfected.
✓
Oil-resistant sealable collector tank is accessible.
1.
Position the pump horizontally on a firm surface. The screw
plug should face upwards.
2.
Secure the pump against falling over or slipping!
3.
Unscrew the screw plug slowly.
