Installation And Electrical Connection; Personnel Qualifications; Installation Methods; Operator's Obligations - Wilo Rexa PRO Serie Instrucciones De Instalación Y Funcionamiento

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6 Installation and electrical con-
nection
6.1

Personnel qualifications

6.2

Installation methods

6.3

Operator's obligations

6.4

Installation

18

Installation and electrical connection

▪ Place the pump upright (vertical) on a firm bearing surface and secure it against slipping
and falling over!
▪ The max. storage temperature is -15 °C to +60 °C (5 °F to 140 °F) at a max. relative humidity
of 90 %, non-condensing. Frost-proof storage at a temperature of 5 °C to 25 °C (41 °F to
77 °F) with relative humidity of 40 % to 50 % is recommended.
▪ Do not store the pumps in rooms in which welding works are carried out. The resulting gases
or radiations could corrode the elastomer parts and coatings.
▪ Tightly seal suction and pressure connection.
▪ Protect power supply cable against kinking and damage.
▪ Protect pump from direct sunlight and heat. Extreme heat may lead to damage to the im-
pellers and coating!
▪ Rotate the impellers by 180° at regular intervals (3 – 6 months). This prevents jamming of
the bearings and it renews the film of lubrication on the mechanical seal. WARNING! There
is a danger of injury due to sharp edges on the impeller and suction port!
▪ The elastomer parts and coatings become brittle over time. When stored for more than
6 months, customer service must be consulted.
Following storage, clean the dust and oil from the pump and check the coating for damage.
Repair damaged coatings before further use.
▪ Electrical work: A qualified electrician must carry out the electrical work.
▪ Installation-/dismantling work: The technician must be trained to handle the necessary tools
and required fastening materials for the present building site.
▪ Vertical stationary wet well installation with guide system
▪ Vertical portable wet well installation with pump foot
▪ Vertical stationary dry well installation
The following installation methods are not permissible:
▪ Horizontal installation
▪ Locally applicable accident prevention and trade association safety provisions must be ob-
served.
▪ Observe all regulations for working with and underneath heavy suspended loads.
▪ Make available protective equipment and ensure that the personnel wear the protective
equipment.
▪ Observe the local regulations of sewage technology for the operation of sewage systems.
▪ Avoid pressure surges!
Pressure surges may arise in long discharge pipes with pronounced route profile. These
pressure surges could lead to pump destruction!
▪ Depending on the operating conditions and the pump chamber size ensure the cooling time
of the motor.
▪ To allow the product to be fixed securely and functionally, the structural components and
foundations must be of sufficient stability. The operator is responsible for the provision and
suitability of the structural components and foundations!
▪ Check that the available consulting documents (installation plans, layout of the operating
space, intake ratios) are complete and correct.
DANGER
Risk of fatal injury due to dangerous lone working practices!
Working in pump chambers and tight spaces as well as working where there is a danger
of falling is dangerous work. This work must not be carried out alone! A second person
must be present for safety reasons.
WILO SE 2019-02