Idiomas disponibles
Idiomas disponibles
draining the whole pipe system when servicing
or exchanging the pump.
– Pump must be mounted free of stress from the pi-
pework. The pipes must be attached in such way
that the pump does not bear the weight of the pi-
pes.
– The venting valve always must face upwards (Fig
5, 6, 7, pos. 1.31).
– When pumps are used in airconditioning/cooling
systems, it is possible to drain off the condensa-
tion of the lantern through drilled holes.
– Any mounting position except „motor down-
wards" is allowed.
The mounting position with horizontal motor
shaft of the IL and DL range is only permissible
for pumps with ≤ 15 kW motor power. An addi-
tionally motor support is not necessary. For
pumps with motor power > 15 kW only the moun-
ting position with vertical motor shaft must be
planned. Block end suction pumps of the BL
range must be installed on sufficient base or
brackets.
Mounting positions: IL
The motor terminal box must not face down-
wards. If necessary, the motor or the motor im-
peller unit can be turned after removing the
screws.
When turning, take care not to da-
ATTENTION!
mage the housing o-ring.
When sucking from tank make sure
ATTENTION!
that the level of liquid is always ab-
ove the pump suction port to avoid
dry-running of the pump.The mini-
mum inlet pressure must be main-
tained.
For units which are be insulated,
ATTENTION!
only the pump housing may be in-
sulated, not the lantern and the mo-
tor (Fig. 5, 6, 7, pos. 1.3 to 2)
5.2
Electrical wiring
All electrical wiring to be carried out by
qualified and licensed electricians in
strict conformity to ruling local regula-
tions.
– All wiring and external gear must comply with ru-
ling regulations (use of cables, all-pole switches,
air gaps, etc. in accordance with the latest edi-
tion of IEE wiring regulations).
– For protection against drip water and to ensure
a firm gland grip the mains supply cable must be
see Fig. 1
DL
see Fig. 2
BL
see Fig. 3
of sufficiently large size. The position of the ca-
bleentrance in electrical connection box of the
motor or the cableposition has to protect the
electrical connection box against drip water.
– Heat-resistant power cable must be used for
pumps in systems with water temperatures ab-
ove 90 °C.
– The power cable must be routed in such a way
to avoid any contact with pipework and/or
pump/motor housings.
– Check available mains power supply and vol-
tage.
– Observe motor name plate data.
– Mains power supply fuses: depending on motor
full-load current.
– Observe earthing regulations.
– The power wiring diagramm is inside the termi-
nal box cover (see also Fig. 4).
– Secure the motor with a motor-protection or
thermal relays.
Setting the thermal relays:
DOL-Starting: Set to FLC-level according to mo-
tor name plate data.
Y-V-Starting: If the overload controller is wired
into the input side to the Y-V-contactor combi-
nation the setting is done as for DOL-starting. If
the overload controller is wired into one of the le-
ads to the motor (U1/V1/W1 or U2/V2/W2) its
setting must be adjusted to 0.58 x FLC.
– Special motors can be supplied with PTC ther-
mal sensor, which must be connected to the PTC
trip relay.
Terminals must not be connected
ATTENTION!
to a voltage over 7.5V, a higher vol-
tage will damage the PTC-sensors.
– Mains power supply to the terminal depends on
rated motor power P2, the supply voltage and the
starting method. For the required terminal bridge
connections refer to table below and Fig. 4.
ENGLISH
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