Operator Responsibilities; Installation - Wilo Rexa UNI Installation And Operating Instructions Manual

▪ Dry well installation
▪ Horizontal installation
6.3

Operator responsibilities

▪ Observe locally applicable accident prevention and
safety regulations of trade associations.
▪ Observe all regulations for working with heavy loads
and under suspended loads.
▪ Provide protective equipment and ensure that the pro-
tective equipment is worn by personnel.
▪ Observe local sewage technology regulations for the
operation of sewage systems.
▪ Avoid pressure surges!
Pressure surges can occur in long discharge pipelines
with steep terrain. These pressure surges can lead to
the destruction of the pump!
▪ Ensure the cooling time of the motor depending on the
operating conditions and the size of the pump cham-
ber.
▪ Structural components and foundations must be of
sufficient stability in order to allow the device to be
fixed securely and functionally. The operator is re-
sponsible for the provision and suitability of the struc-
tural component/foundation!
▪ Check that the available consulting documents (install-
ation plans, design of the operating space, inflow con-
ditions) are complete and correct.
6.4

Installation

DANGER
Potentially fatal danger due to dangerous
autonomous work!
Work in chambers and narrow rooms as well as work
involving risk of falling are dangerous work. Such
work may not be carried out autonomously! A
second person must be present for safety reasons.
WARNING
Hand and foot injuries due to lack of protect-
ive equipment!
Danger of (serious) injuries during work. Wear the
following protective equipment:
• Safety gloves against cuts
• Safety shoes
• Safety helmet must be used if lifting equipment
are used!
Installation and operating instructions Wilo-Rexa UNI
Installation and electrical connection
NOTICE
Only use lifting equipment in a technically
sound condition!
Only use lifting equipment in a technically sound
condition for lifting, lowering and transporting the
pump. Ensure that the pump does not become
jammed during lifting and lowering. Do not exceed
the max. permissible bearing capacity of the lifting
equipment!
NOTICE
Emerging of the motor during operation
If the motor emerges during operation, the specific-
ations for "Operating mode non-immersed" must be
complied with!
To ensure that the motor is cooled during continu-
ous duty, the motor must be immersed completely
before switching it on again!
▪ Prepare operating space/installation location as follows:
– Clean, free of coarse solids
– Dry well
– Frost-free
– Decontaminated
▪ Take immediate countermeasures if there is a build-up
of toxic or suffocating gases!
▪ Use the handle for lifting, lowering and transporting the
pump. Never carry or drag the pump by the power sup-
ply cable!
▪ It must be possible to attach lifting equipment safely.
The storage place and the operating space/installation
site must be accessible with the lifting equipment. The
set-down location must have a solid bearing surface.
▪ Attach the lifting gear to the handle using a shackle.
Only use lifting gear which has been technically ap-
proved.
▪ The routed power supply cables must allow safe opera-
tion. Check whether the cable cross-section and the
cable length are sufficient for the selected installation
type.
▪ The corresponding IP class must be observed when us-
ing switchgear. Install the switchgear overflow-proof
and outside potentially explosive areas!
▪ Avoid air intake into the fluid, use baffles or deflector
plates for the inlet. Air which has entered the system
can collect in the pipe system and lead to impermissible
operating conditions. Air pockets must be removed via
ventilation systems!
en
13