Wilo Rexa UNI User Manual

Product description en
Installation and operating instructions Wilo-Rexa UNI 9
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.
DANGER
Danger due to fluids hazardous to health!
If the pump is used in fluids hazardous to health, de-
contaminate the pump after dismantling and before
carrying out any other work! There is danger to life!
Observe the specifications in the work regulations!
The operator must make sure that the personnel has
received and read the work regulations!
The submersible pumps must not be used for pumping:
▪Drinking water
▪Fluids containing hard components (such as stones,
wood, metal, etc.)
▪Fluids containing large quantities of abrasive contents
(e.g. sand, gavel)
Intended use also includes compliance with this
manual. Any other use is regarded as non-compliant
with the intended use.
4 Product description
4.1 Design
Submersible sewage pump as a submersible monobloc
unit for intermittent operation for wet well installation.
4
5
6
1
2
3
Fig.1: Overview
1 Handle/attachment point
2 Motor housing
3 Hydraulics housing
4 Pressure port
5 Pump support foot, integrated in hydraulics housing
6 Power supply cable
4.1.1 Hydraulics
Rotodynamic hydraulics with vortex impeller and hori-
zontal flange connection on the pressure side. The
screwed connection is integrated in the pressure port.
The hydraulics are not self-priming, in other words, the
fluid must flow in either automatically or with supply
pressure.
NOTICE
Combined connection for DN50 and DN65!
The RexaUNIV06 is equipped with a DN50/65
combined connection. The factory setting of the
connection is DN65. To use the pump with a DN50
connection, press the nuts in the flange inwards
onto the small hole circle. The flange can be reset to
DN65 at any time!
4.1.2 Motor
The drive versions used are single-phase current and
three-phase current surface-cooled motors. The motor
is cooled by the fluid around it. The waste heat is trans-
ferred directly to the fluid via the motor housing. The
motor may emerge during operation.
With single-phase AC motors, the operating capacitor
is integrated in the motor. The connection cable is
available in the following versions:
▪Single-phase version:
– With shockproof plug
– With a shockproof plug and fitted with a float switch
▪Three-phase version:
– With bare cable end
– With CEE plug and fitted with a float switch
4.1.3 Seal
Different designs are used for the seal to the fluid and
the motor compartment:
▪RexaUNIV05: A rotary shaft seal is used on the motor
side, a mechanical seal is used on the fluid side.
▪RexaUNIV06: A mechanical seal is used on the motor
side and the fluid side.
The sealing chamber between both seals is filled with
medical white oil.

Wilo Rexa UNI Specifications

General

Brand	Wilo
Model	Rexa UNI
Category	Water Pump
Language	English