Wilo Rexa MINI3-S, Installation And Operating Instructions Manual

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en
Installation and operating instructions • Wilo-Rexa MINI3-S • Ed.01/2022-03 7
with two mechanical seals. Stainless steel motor housing. Detach-
able connection cable with capacitor box, float switch and plug
(CEE 7/7).
Rexa MINI3-S ... /T ... /O
Sewage pump with radial macerator with double shear effect. Hori-
zontal discharge port with flange and oval connection. Hydraulics
housing and impeller made of grey cast iron; macerator made of
hardened cutting steel. Surface-cooled 3~ motor with thermal
motor monitoring. Oil-filled sealing chamber with two mechanical
seals. Stainless steel motor housing. Detachable connection cable
with bare cable ends.
2.2 Technical data
Date of manufacture See rating plate
1)
Mains connection See rating plate
Rated power See rating plate
Max. delivery head See rating plate
Max. volume flow See rating plate
Activation type See rating plate
Speed See rating plate
Discharge connection DN 32/40
Operating mode, immersed S1
Operating mode, non-im-
mersed S3 10%
2)
Fluid temperature 3 ... +40 °C (37 ... 104 °F)
Fluid temperature, short-term
for 3 min -
Max. immersion depth 7 m (23 ft)
Protection class IP68
Insulation class F
Max. switching frequency /h 60/h
Key
1)
In accordance with ISO 8601
2)
1 min operation, 9 min standby
2.3 Type key
Ex-
ample: Rexa MINI3-S03/M008-523/A
Rexa Submersible sewage pump
MINI3 Series
S Macerator
03 Nominal diameter of the discharge connection:
DN 32/40
M Mains connection version:
• M = single-phase current (1~)
• T = three-phase current (3~)
008 Value/10 = rated power P
2
in kW
- Not Ex-rated
5 Mains frequency: 5 = 50 Hz/6 = 60 Hz
23 Rated voltage code
A Additional electrical equipment:
• O = with bare cable end
• P = with plug (CEE 7/7)
• A = with float switch and plug (CEE 7/7)
2.4 Scope of delivery
• Pump
• Installation and operating instructions
2.5 Functions
2.5.1 Self-switching thermal motor monitoring
If the motor becomes too hot, the pump is deactivated. After the
motor has cooled down, the pump is automatically switched on
again.
2.5.2 Float switch
The Rexa MINI3-S ... -A is equipped with a float switch. The float
switch is used to switch the pump on and off depending on the
level:
• Upper floater: Pump on
• Lower floater: Pump off
3 Application/use
3.1 Intended use
For the pumping in domestic areas of:
• Sewage containing faeces
• Wastewater (with small amounts of sand)
Sewage pumping according to (DIN) EN 12050
The pumps meet the requirements of EN 12050-1.
3.2 Improper use
DANGER
Explosion due to pumping of explosive fluids!
Pumping of highly flammable and explosive fluids
(gasoline, kerosene, etc.) in pure form is strictly pro-
hibited. There is a risk of fatal injury due to explo-
sion! The pumps are not designed for these fluids.
The submersible pumps must not be used for pumping:
• Untreated sewage
• Drinking water
• Fluids containing hard components (such as stones, wood,
metal, etc.)
• Fluids containing high quantities of abrasive contents (e.g.
sand, gravel).
• Viscous fluids (e.g. oil and grease)
• Seawater
Intended use also includes compliance with this manual. Any other
use is regarded as non-compliant with intended use.
4 Transport and storage
CAUTION
Soaked packaging may tear!
The product may fall on the ground if unprotected
and may be damaged. Lift wet packaging carefully
and replace it immediately!
• Wear protective equipment!