Installation And Operating Instructions; Electrical Connection - Wilo -Jet-WJ Notice De Montage Et De Mise En Service

ATTENTION! The pump must not run dry.
Warranty does not cover damages to the pu mp
due to dryrunning.
4.1 Description of WJ-Series Pump
Series WJ pumps are portable for mobile applica-
tion. Single phase pumps have a carrying grip and
are supplied complete with power cable, plug
and ON/OFF switch.
Standard-Installations
– Figure 1: Pump in suction
– Figure 2: Pump under pressure on storage tank or
on town water supply with dry-running prote-
ction system.
Legend for Installation samples (see figures 1 and 2):
Pos. 1 Strainer-foot valve (maximum passing
section 1 mm)
Pos. 2 Pump suction valve
Pos. 3 Pump discharge valve
Pos. 4 Non-return valve
Pos. 5 Filling plug
Pos. 6 Draining plug
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 kit,
– Isolating valves,
– Non-return valves,
– Strainer-foot valve,
– Bladder tank,
– Vibrationless sleeves,
– Motor protection relay,
– Dry running protection (ME kit),
– On-off control device...
The use of new accessories is recommended.
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 pre-
ventive measures (e. g. provision of alarm
systems, standby pump, etc.) to avoid conse-
quential 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
WILO SE 09/2009
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
– Discharge pipe connections must be free of
stress on the pump.
ATTENTION! In order to ensure proper operation
a static 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

ATTENTION! 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 moi-
sture.
– Check available power supply.
– Take note of pump name plate data require-
ments.
– Supply side fuse: 10A, inert action.
– Observe local earthing requirements.
Pumps must only be operated on electrical cables
(also extension 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 installation by others of an external thermal
overload protection device to be set to the F.L.C.
value stated on the motor name plate.
– Do not forget to connect the earth.
– A connection error would damage the motor.
– The power cable must never touch the pipe or
the pump ; make sure that it is sheltered from
any humidity.
6. Commissioning
– Check to ensure that a sufficiently high water
level is available 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 direction of rotation corresponds with the
1/4 ".
English
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