Maintenance; Sitting/Installation; Commissioning; Electrical Connection - Wilo Jet WJ Serie Instrucciones De Instalación Y Servicio

Pos. 7 Pipe supports
Pos. 8 Strainer
Pos. 9 Storage tank
Pos. 10 Town water supply
Pos. 11 3~ motor protection relay
Pos. 12 OFF/ON switch for single phase motor (red indicator
light)
Pos. 13 Power plug (1~ -Motor)
4.2 Scope of supply
– Jet Pump (WJ)
– Installation and Operation instructions
4.3 Accessories
– Suction hose set
5 Sitting/lnstallation
5.1 Installation
The pump must be operated in strict compliance with local
water supply regulations.
Requirements on installation location:
– easy to reach
– well vented, dry and frostfree
– Installation on a concrete socket or directly on a smooth and
horizontal floor
lt is the Operators responsibility to take all preventive meas-
ures (e. g. provision of alarm systems, standby pump, etc.) to
avoid consequential damages such as flooding due to pump
failure.
– Suction and discharge piping to be provided on site by
others.
– When using solid pipe connections the pump must be firmly
fixed to the floor.
– If not firmly fixed, flexible connectors must at least be used
for suction and discharge ports.
– The suction pipe must be fully airtight and be installed free of
stress, steadily rising towards the pump.
– Suction lifts above 5 metres require a suction pipe size of not
less than 1[HH.
– Discharge pipe connections must be free of stress on the
pump.
In order to ensure proper operation a static
ATTENTION!
discharge head of 30 cm is required; the
discharge pipe must thus be installed with a rise
of at least 30 cm.
– A foot valve is required at the end of the suction line. lt must
be located not less than 30 cm below the lowest water level.
Recommended is the use of a suction hose set (optional
extra) consisting of suction hose, suction strainer and foot
valve.
5.2

Electrical connection

All electrical work to be carried out by a qualified
and locally licenced electrician in strict conformity
with locally ruling regulations.
30 mA earth fault circuit interruptors should be used for the
electrical circuits to the pump.
– Regulations of VDE 0100, Part 702 must be observed for use
in conjunction with swimming pools or garden ponds.
– Electrical plug connections must be made in flood-safe
locations and be protected from moisture.
– Check available power supply.
– Take note of pump name plate data requirements.
– Supply side fuse: 10A, inert action.
– Observe local earthing requirements.
Pumps must only be operated on electrical cables (also exten-
sion leads) conforming with local ruling standards.
– Three-phase motors to be wired in accordance with Fig. 3
(motor terminal wiring).
– Three-phase motors require the onsite provision and instal-
lation by others of an external thermal overload protection
device to be set to the F.L.C. value stated on the motor name
plate.

6 Commissioning

– Check to ensure that a sufficiently high water level is availa-
ble in the open break tank or bore. Dry-running of the pump
must be prevented as it will lead to destruction of the
mechanical seal.
– Fill pump and suction line via the fill plug. Only a filled pump
has self-priming capacity.
– Open discharge isolating valve(s) to allow free air evacuation
from the suction pipe.
– Three-phase motors require a rotation check:
Briefly switch on the pump and check whether actual direc-
tion of rotation corresponds with the arrow on the fan hood
of the motor. II necessary, change any two supply phases.
– Never use the power supply cable for lifting, transporting or
fixing of the pump.
– The pump must not be subjected to direct water spray.

7 Maintenance

Isolate from power supply before checking the
pump!
In principle, damage to the connecting cable should
only be repaired by a qualified electrician.
To ensure highest operational safety and reliability at lowest
possible cost the following routine checks are recommended:
– Check on diaphragm vessel pressure (at least 1.4 bar on
standard settings of pressure switch).
– Check pump for leaks.
On danger of freezing it is necessary to completely drain the
pump using the drain plug at the bottom of the pump housing.
For prolonged standdown periods (e. g. winter shutdown) the
pump needs thorough scouring, complete draining and dry
storage.
On re-commissioning check tor free rotation by brieflyswit-
ching-on the pump. Then re-fill with water.
ENGLISH
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