Wilo Rexa MINI3-S, Installation And Operating Instructions Manual

Page: 11 / 16

en
Installation and operating instructions • Wilo-Rexa MINI3-S • Ed.01/2022-03 11
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
Insert the plug into the socket, the pump is ready for operation.
Switch the pump on and off with the ON/OFF switch on the ca-
pacitor control box.
• Pump with plug and float switch
Insert the plug into the socket, the pump is ready for operation.
The pump is controlled via two switches on the capacitor box:
–
HAND/AUTO: Set the operating mode.
HAND: Switch the pump on and off manually.
AUTO: Switch the pump on and off automatically depending
on the fill level.
Upper floater: Pump on, floater down: Pump off.
–
ON/OFF: Switch the pump on and off in operating mode
“HAND”.
• 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 Shut-down
During decommissioning, the pump is disconnected from the
mains, but should remain installed. This ensures that the pump is
always ready for operation.
✓ Completely immerse the pump in the fluid to protect the
pump from frost and ice.
✓ Min. fluid temperature: +3 °C (+37 °F)
✓ Min. ambient temperature: +3 °C (+37 °F)
1. Disconnect the pump from the mains:
- Pull plug.
- Switch off the main switch on the switchgear.
2. Shut off the inlet.
▶ Pump is out of operation.
If the pump remains installed after decommissioning, observe the
following points:
• Ensure that the decommissioning requirements are maintained
for the complete decommissioning period. Remove the pump if
meeting these requirements cannot be guaranteed!
• If the pump will not be used for a prolonged period, switch on
the pump and carry out one pumping process every two months
to prevent encrustations and clogging.
CAUTION! Only carry
out the pumping process under suitable operating conditions.
Allowing the pump to dry run is strictly forbidden! Failure to
observe these instructions will lead to irreparable damage to
the pump!
8 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.
8.1 Stationary wet well installation
✓ Pump is decommissioned.
✓ Inlet shut off.
1. Shut off the discharge pipe.