Installation and electrical connection en-US
Installation and operating instructions Wilo-Rexa UNI 13
▪To allow the product to be fixed securely and function-
ally, the structural components and foundations must
be of sufficient stability. The operator is responsible for
the provision and suitability of the structural compo-
nents and foundations!
▪Check that the available consulting documents (instal-
lation plans, layout of the operating space, intake ra-
tios) are complete and correct.
6.4 Installation
DANGER
Danger to life due to dangerous lone work-
ing!
Working in pump chambers and tight spaces as well
as working where there is a danger of falling is dan-
gerous work. This work must not be carried out
alone! A second person must be present for safety
reasons.
WARNING
Hand and foot injuries due to the absence of
protective equipment!
During work there is a risk of (serious) injury. Wear
the following protective equipment:
• Safety gloves against cutting injuries
• Safety shoes
• If lifting equipment is used, a protective helmet
must be worn in addition!
NOTICE
Use only technically flawless lifting equip-
ment!
For lifting, lowering and transporting the pump, use
only technically flawless lifting equipment. Make
sure that the pump does not jam during lifting and
lowering. Do not exceed the maximum permissible
bearing capacity of the lifting equipment!
NOTICE
Motor emerging during operation
If the motor emerges during operation, the informa-
tion for “non-immersed operating mode” must be
adhered to!
To ensure the necessary cooling of the motor for
continuous duty, the motor must be completely im-
mersed before re-activation!
▪Prepare operating space/installation site as follows:
– Clean, cleaned of coarse solids
– Dry well
– Frost-free
– Decontaminated
▪If toxic or suffocating gases build up, immediately take
countermeasures!
▪For lifting, lowering and transporting the pump use the
handle. Never carry or drag the pump by the power
supply cable!
▪Lifting equipment must be safely installed. The storage
location as well as the operating space/installation site
must be accessible with the lifting equipment. The
storage location must have a firm surface.
▪Attach lifting gear to the handle with a shackle. Only
use technically approved lifting gear.
▪The routed power supply cables must allow safe opera-
tion. Check whether the cable cross section and the ca-
ble length are sufficient for the selected installation
type.
▪When using switchgear, the corresponding IP class
must be observed. Install switchgear in a manner that is
overflow-proof and outside potentially explosive areas!
▪Avoid air intake into the fluid, use guide or deflector
plates for the inlet. Entrained air can collect in the pipe
system and lead to impermissible operating conditions.
Eliminate air pockets via the ventilation system!
▪Dry running of the pump is forbidden! Avoid air pockets
in the hydraulics housing or in the pipe system. Never
fall below minimum water level. The installation of a
dry-running protection is recommended!
6.4.1 Instructions for double pump operation
If several pumps are used in an operating space, mini-
mum distances between the pumps and the wall must
be complied with. Here there is a difference in the dis-
tances depending on the type of system: Alternating
operation or parallel operation.
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