en
12
Installation and operating instructions • Wilo-Rexa PRO-S • Ed.01/2022-03
•
Storage conditions:
–
Maximum: -15 to +60 °C (5 to 140 °F), max. humidity: 90 %, non-condensing.
–
Recommended: 5 to 25 °C (41 to 77 °F), relative humidity: 40 to 50 %.
–
Protect the pump from direct exposure to sunlight. Extreme heat can cause damage!
•
Do not store the pump in rooms where welding work is carried out. The resulting gases
or radiation can corrode the elastomer parts and coatings.
•
Seal the suction and discharge connection tightly.
•
Protect the connection cable against kinking and damage. Maintain a constant bend ra-
dius!
4
Application/use
4.1
Intended use
For pumping in commercial 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 12050-2.
4.2
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 prohibited. There is a risk of fatal injury due to
explosion! 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).
Intended use also includes compliance with this manual. Any other use is regarded as non-
compliant with intended use.
5
Product description
5.1
Description
Fully submersible grinder pump for stationary and portable wet well installation in continu-
ous operation.
1
2
3
4
5
6
7
Fig. 2: Overview
1
Handle/attachment point
2
Connection cable
3
Discharge connection
4
Macerator
5
Hydraulics housing
6
Seal housing
7
Motor housing
Rexa PRO-S .../M .../O
Sewage pump with radial macerator with double shear effect. Horizontal discharge port with
flange and oval connection. Hydraulics housing and impeller made of grey cast iron; macer-
ator made of hardened cutting steel. Surface-cooled 1~ motor with thermal motor monitor-
ing and moisture probe. Oil-filled sealing chamber with two mechanical seals. Motor housing
made of grey cast iron. Detachable connection cable with capacitor box and bare cable ends.
Unit with Ex-rating as standard.
Rexa PRO-S .../T .../O
Sewage pump with radial macerator with double shear effect. Horizontal discharge port with
flange and oval connection. Hydraulics housing and impeller made of grey cast iron; macer-
ator made of hardened cutting steel. Surface-cooled 3~ motor with thermal motor monitor-
ing and moisture probe. Oil-filled sealing chamber with two mechanical seals. Motor housing
