Wilo Wilo-Rexa NORM, Инструкция по установке и эксплуатации

Страница: 15 / 32

Installation and operating instructions Wilo-Rexa NORM 15
PRODUCT DESCRIPTION English
be used for many applications. Please note that if
requirements change (density, viscosity or general
composition), this can also affect many operating
parameters of the pump.
When using and/or replacing the pump to pump a
different fluid, observe the following points:
• The fluid can be contaminated by oil from the
sealing chamber if the mechanical seal is defec-
tive.
Pumping drinking water is not permitted!
• Pumps that have been used to pump contami-
nated water must be cleaned thoroughly before
being used to pump other fluids.
• Pumps that have been used to pump fluids con -
taining faeces and/or fluids that are hazardous to
health must generally be decontaminated before
being used to pump other fluids.
First clarify whether these pumps may be used
to pump other fluids!
2.10. Sound pressure
NOTICE
lso note all the information in the operating and
maintenance manual for the motor!
CAUTION: Wear noise protection!
According to applicable laws and regula-
tions, ear protection must be worn if the
sound-pressure level is 85 dB (A) or more!
The end-user must make sure that this is
complied with!
The pump generates a sound-pressure level of
approx. 70 dB (A) to 80 dB (A) during operation.
However, the actual sound pressure depends on
several factors. These include e.g. installation,
fixation of accessories and pipe, duty point etc.
We recommend that the end-user takes an
additional measurement at the workplace once
the pump is running at its duty point and under all
operating conditions.
2.11. Standards and guidelines used
The pump is subject to various European direc-
tives and harmonised standards. Refer to the
EC-Declaration of conformity for precise informa-
tion about this.
In addition, various standards are used as a basis
for operating, assembling and dismantling the
pump.
2.12. CE marking
The CE marking is attached to the rating plate for
the pump.
3. Product description
The pump is manufactured with great care and is
subject to constant quality controls. Trouble-free
operation is guaranteed if the device is installed
and maintained correctly.
3.1. Intended use and fields of application
DANGER due to explosive fluids!
It is strictly prohibited to pump explosive
fluids (petrol, kerosene etc.). The pump is not
designed for these fluids!
The sewage pumps are suitable for pumping:
• Wastewater
• Sewage containing faeces
• Sludges with up to 8 % dry matter (depending on
type)
The sewage pumps must not be used for
pumping:
• Drinking water
• Fluids containing hard components such as
stones, wood, metals, sand etc.
• Highly flammable and explosive fluids in pure
form
Intended use also includes compliance with this
manual. Any other use is regarded as non-in-
tended use.
3.2. Structure
Sewage pump for stationary dry well installation.
3.2.1. Version
Fig. 1.: Versions
A Unit
B Bare shaft
• Unit
Hydraulics with standard motor, connected via
coupling, fully mounted on a baseplate.
• Bare shaft
Hydraulics without motor, coupling and base-
plate. The operator must provide an appropriate
motor with coupling as well as the baseplate and
install them on-site.
3.2.2. Hydraulic components
Fig. 2.: Description
1 Hydraulic components 6 Venting screw
2 Suction connection 7 Drainage screw
3 Discharge connection 8 IEC standard motor
4 Bearing bracket 9 Coupling guard
5
Sealing chamber
monitoring connection
(optionally available)
10 Baseplate
Hydraulics housing and bearing bracket as a
self-contained unit, with channel impeller or vor-
tex impeller, axial suction port and radial pressure
port. The connections are configured as flange
connections.
Bearing bracket with seal on the fluid and motor
sides, as well as sealing chamber and leakage
chamber for receiving fluid ingress through the