During Operation; Shut-Down/Dismantling; Personnel Qualifications; Operator Responsibilities - Wilo -Rexa FIT Instrucciones De Instalación Y Funcionamiento

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Pump with attached float switch and plug
▪ Single-phase current version: After inserting the plug
into the socket, the pump is ready for operation. The
pump is switched on and off automatically depending on
the fill level.
▪ Three-phase current version: After inserting the plug
into the socket, the pump is ready for operation. The
pump is controlled via two switches on the plug:
– MANUAL/AUTO: Determines if the pump is switched
on and off directly (MANUAL) or depending on the fill
level (AUTO).
– ON/OFF: Switch pump on and off.
Pump with attached plug
▪ Single-phase current version: After inserting the plug in
the socket, the pump is switched on.
▪ Three-phase current version: After inserting the plug
into the socket, the pump is ready for operation. The
pump is switched on and off with the ON/OFF switch.
Pumps with bare cable end
The pump must be switched on and off using a separate
operating point (on/off switch, switchgear) provided by
the customer.
7.6

During operation

WARNING
Amputation of limbs due to rotating compon-
ents!
No persons must be present in the work area of the
pump! There is risk of (serious) injuries due to rotating
components! No persons must be present in the work
area of the pump during start-up or operation.
WARNING
Risk of burns from hot surfaces!
Motor housing can become hot during operation. It
may cause burns. Allow the pump to cool down at
ambient temperature after switching it off!
NOTICE
Pumping problems due to water level being
too low
The hydraulics are self-venting. Smaller air cushions
are resorbed during pumping. If the fluid is lowered
too much, separation of the volume flow may occur.
The minimum permissible water level must reach the
upper edge of the hydraulics housing!
48

Shut-down/dismantling

When operating the pump, observe the locally applicable
regulations on the following topics:
▪ Work safety
▪ Accident prevention
▪ Handling electrical machines
Strictly adhere to the responsibilities of the personnel
specified by the operator. All personnel are responsible
for ensuring that the responsibilities of the personnel
and the regulations are observed!
Due to their design, centrifugal pumps have rotating
parts that are easily accessible. Depending on the oper-
ating condition, sharp edges can develop on these parts.
WARNING! This can lead to cuts and limbs may be
severed! Check the following at regular intervals:
▪ Operating voltage (+/-10 % of the rated voltage)
▪ Frequency (+/-2 % of the rated frequency)
▪ Power consumption between individual phases
(max. 5 %)
▪ Voltage difference between the individual phases
(max. 1 %)
▪ Max. switching frequency
▪ Minimum water submersion depending on the operating
mode
▪ Inlet: no air intake
▪ Level control device/dry-running protection: Switching
points
▪ Quiet/low-vibration running
▪ All gate valves open
8 Shut-down/dismantling
8.1

Personnel qualifications

▪ Operation/control: Operating personnel must be instruc-
ted in the functioning of the complete system.
▪ Electrical work: A qualified electrician must carry out the
electrical work.
▪ Installation/dismantling: The technician must be trained
in the use of the necessary tools and fixation materials
for the relevant construction site.
8.2

Operator responsibilities

▪ Locally applicable accident prevention and safety regula-
tions of trade associations.
▪ Observe regulations for working with heavy loads and
under suspended loads.
▪ Provide the necessary protective equipment and make
sure that the personnel wears it.
▪ Provide adequate aeration in closed rooms.
▪ Take immediate countermeasures if there is a build-up
of toxic or suffocating gases!
WILO SE 2019-02