Wilo Rexa MINI3, Инструкция по установке и эксплуатации

Страница: 10 / 16

en
10 Installation and operating instructions • Wilo-Rexa MINI3 • Ed.03/2022-05
6 Commissioning
DANGER
Risk of fatal injury due to electrical currents
in accessible basins!
Do not operate the pump if there are persons in
contact with the fluid. In the event of a fault this
may cause death by electric shock! Only activate the
pump when there are no longer any persons in con-
tact with the fluid.
NOTICE
Check the inlet quantity!
The maximum inlet volume flow must be less than
the maximum pump delivery rate. If the inlet quant-
ity is higher, the pump will not be able to pump
away the volume flow. The pump chamber may
overflow!
6.1 Before activating
Check the following prior to activation:
• Has the electrical connection been carried out in accordance
with regulations?
• Has the connection cable been routed safely?
• Can the float switch move freely?
• Temperature of the pumped fluid observed?
• Immersion depth observed?
• Are the pressure pipe and pump sump free of deposits?
• All gate valves in the pressure pipe open?
6.2 Switching on and off
The pump is switched on and off depending on the version:
• Pump with plug, without float switch
The pump will switch on immediately after the plug has been
inserted into the socket. To switch off the pump, pull the plug.
• Pump with plug and float switch
The pump will switch on and off automatically on reaching the
switching level:
–
Upper floater: Pump on.
–
Lower floater: Pump off.
• Pump with bare cable end ( without plug )
Switch the pump on and off via a separate control. Read the in-
stallation and operating instructions for the control unit for fur-
ther details.
6.3 Test run
If the pump is installed stationary (e.g. cesspool, overflow shaft),
carry out a test run. Check the following points with the test run:
• General conditions (inflow quantity, switching points)
• Direction of rotation (with 3~ motors)
The test run must include three pump cycles.
1. Flood the pump chamber: Open inlet.
NOTICE! The required feed quantity for the test run can also
be simulated using another water source.
2. When the switch-on level is reached: pump starts.
3. Switch-off level reached: pump stops.
4. Repeat two more pumping processes.
▶ Once three pumping processes have been completed
without problems, the test run is finished.
NOTICE! If the pump does not switch on once a week, repeat the
test run every month.
6.4 During operation
CAUTION
Do not allow the pump to dry run!
Do not run the pump without fluid (dry run). Switch
off the pump once the residual water level has been
reached. Dry running may destroy the seal and cause
the pump to be irreparably damaged.
Check the following points:
• Inlet quantity corresponds to the pump delivery rate.
• Float switch is operating correctly.
• Connection cable is not damaged.
• Pump free from deposits and encrustations.
7 Removal
DANGER
Risk of infection due to fluids hazardous to
health!
Hazardous germs can form in standing waters. If
there is a risk of germ formation, observe the fol-
lowing points:
• Ensure sufficient air exchange.
• Wear a breathing protection mask e.g. Half mask
3M series 6000 with filter 6055 A2.
• Disinfect product.
• Wear protective equipment!
• Depending on the operating mode and duration, the housing
parts become hotter than 40 °C (104 °F).
–
Only touch the product by the carrying handle.
–
Allow product to cool down.
• Clean the device thoroughly.
7.1 Stationary wet well installation
1. Close the gate valve in the inlet and pressure pipe.
2. Switch off pump.
Pump
with a plug: Pull the plug.
Pump firmly connected( without plug): Disconnect the pump
from the mains. DANGER! Have electrical work carried out
by a qualified electrician!
3. Disconnect the connection cable from the pressure pipe.
4. Release the pump and discharge pipe from the pressure pipe.
5. Lift the pump by the handle out of the operating space.
6. Unscrew the discharge pipe from the pressure port.
7. Coil up the connection cable and store it with the pump.
8. Clean pump and discharge pipe thoroughly.
▶ Pump removed.