Transport; Electrical Connection; Potential Equalisation; Rotational Direction - Jung Pumpen MultiFree UAK 25/2 AW /3 Instructions De Service

English
installed, however, it must not be allowed to
freeze in the water.

Transport

The pump must always be lifted by
the shackle and never by the power
supply cable! The pump should only
be lowered by using a rope or chain.
Dimensions [mm]
A B C
...25/2 AW 500 360 135 135 155 215
...35/2 AW 535 360 135 135 155 215
...25/2 BW1 550 375 140 140 205 265
...35/2 BW1 585 375 140 140 205 265
...15/4 BW1 550 375 140 140 205 265
...25/4 BW1 550 375 140 140 205 265
...35/4 BW1 585 375 140 140 205 265
...10/4 CW1 585 415 165 165 220 290
...15/4 CW1 585 415 165 165 220 290
...25/4 CW1 585 415 165 165 220 290
...35/4 CW1 620 415 165 165 220 290
...55/4 CW2 785 520 215 215 245 335
...75/4 CW2 785 520 215 215 245 335
Jung Pumpen GmbH • Industriestr. 4-6 • 33803
Steinhagen
XX1
DIN EN 12050-1
Wastewater lifting plants for buildings, DN 65, 80
and 100
See "Technical Data" for pump performance
Noise emission value < 70 dB(A)
Corrosion protection – synthetic resin coating
1 The first two figures of the pump number indicate
the year of manufacture
4 4
Jung Pumpen GmbH • Industriestr. 4-6 • 33803
Wastewater lifting plants for faecal-free wastewa-
See "Technical Data" for pump performance
Noise emission value < 70 dB(A)
Corrosion protection – synthetic resin coating
1 The first two figures of the pump number indicate
Where no explosion protection is stipulated for
the pumping of foul wastewater at the instal-
lation location, UAK pumps may also be used.

Electrical connection

Circuitry for low voltage (23291)
D E F
Circuitry for high voltage (23290)
Circuitry for high voltage CW2-pumps (29713)
Steinhagen
XX1
DIN EN 12050-2
ter, DN 65, 80 and 100
the year of manufacture
Alterations to the circuitry are to be made us-
ing crimp connectors (X) between the coni
plug connection (Y) and the built-in motor. The
new crimp connection must be professionally
made.
By using our controls, you can be sure that the
requirements of the EU type-testing certificate
are met.
Only qualified electricians may carry
out electrical works to the pump or
the controls.
The standards applicable in each case (e.g. EN),
the country-specific regulations (e.g. VDE in
Germany), and the regulations of the local sup-
ply network operator must be observed.
ATTENTION! Never lay the end of cables in wa-
ter! Penetrating water may cause malfunctions.
Only slow-blow fuses or automatic fuses with C
or D characteristics are to be used as pre-fuses
for the pump. Necessary fuse protection for di-
rect on-line start: 10 A, and for star-delta start
16 A (20 A for ... 75/4).
The pump must be protected via an overload
trip. Setting for direct on-line start = nominal
current, and for star-delta start = nominal cur-
rent x 0.58.
If the protective device has been triggered, the
cause of the malfunction must be eliminated
before switching on again.

Potential equalisation

To comply with EN 60079-14 and EN 1127-1,
an additional equipotential bonding must be
installed for facilities with protective earth con-
ductors in TN/TT networks in areas subject to
explosion hazards. In Germany, for example,
the design must be in accordance with VDE
0100, Part 540 (Association of German Electri-
cal Engineers).
No additional potential equalisation is required
on site for JUNG PUMPEN concrete or plastic
chambers in explosion zones 1 and 2 (state-
ment made by TÜV Nord (Technical Inspection
Agency) in March 2008).
Exception: if conductive parts, such as cable
protection sleeves made of corrugated pipe or
a pressure pipe made of metal, are connected
to the chamber from the outside. In this case,
an electrically conductive connection must be
made between the conductive parts and the
housing of the pump(s). For corrosion protec-
tion reasons, the connection should be made
using stainless steel.
Explosion protected pumps (UFK...) have a spe-
cial connection point at the cable entry point.

Rotational direction

The rotational direction must be checked be-
fore installation! If the rotational direction is
correct, the start-up jolt should be in the oppo-
site direction to the rotational direction arrow
on the motor housing. The wrong rotational
direction is also indicated if the pump performs
inadequately when installed, or if loud noises