Wilo Rexa UNI Series User Manual

Product description en-US
Installation and operating instructions Wilo-Rexa UNI 9
DANGER
Danger due to fluids which are dangerous to
health!
When the pump is used in fluids which are danger-
ous to health, decontaminate the pump after re-
moval and before all work! There is a risk of fatal in-
jury! Observe information from the work regula-
tions! The operator must ensure that the personnel
have received and read the work regulations!
The submersible pumps must not be used for pumping:
▪Potable water
▪Fluids containing hard components (e.g. stone, wood,
metal etc.)
▪Fluids with large amounts of abrasive contents (e.g.
sand, grit).
Intended use also includes compliance with these in-
structions. Any other use is regarded as improper use.
4 Product description
4.1 Construction
Submersible sewage pump as a submersible monobloc
unit for intermittent operation in wet well installation.
4
5
6
1
2
3
Fig.1: Overview
1 Handle/attachment point
2 Motor housing
3 Hydraulics housing
4 Discharge port
5 Pump support foot, integrated into 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 into the discharge
port.
The hydraulics are not self-priming, therefore the fluid
must flow in either under natural pressure or under
supply pressure.
NOTICE
Combined connection for DN50 and DN65!
The Rexa UNIV06 is fitted with a combined connec-
tion DN50/65. The factory setting of the connec-
tion is DN65. To use the pump on a DN50 connec-
tion, press the nuts in the flange inwards on the
small hole circle. The flange can be reset at any time
to DN65!
4.1.2 Motor
Single or three phase AC surface-cooled motors are
used as a drive. The motor is cooled by the fluid around
it. The waste heat is transferred directly to the fluid via
the motor housing. The motor can emerge during oper-
ation.
With 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 shockproof plug and attached float switch
▪Three-phase current version:
– With bare cable end
– With CEE plug and attached float switch
4.1.3 Seal
The seal for the fluid and the motor compartment is
available in different designs:
▪Rexa UNI V05: A rotary shaft seal is used on the motor
side and a mechanical seal on the fluid side.
▪Rexa UNI V06: On the motor and fluid side a mechanical
seal is used.
The sealing chamber between both seals is filled with
medicinal white oil.
4.1.4 Material
▪Pump housing: PP-GF30
▪Impeller: PP-GF30
▪Motor housing: 1.4301
▪Shaft: 1.4401
▪Seal, on the fluid side: SiC/SiC

Wilo Rexa UNI Series Specifications

General

Brand	Wilo
Model	Rexa UNI Series
Category	Water Pump
Language	English