Installation; Start-Up; Electrical Connection - Xylem Lowara CO Serie Instrucciones De Instalacion Y Uso

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5. Installation

The product must be handled with care; impacts can cause damage without any visible external signs.
See figs. 1 and 2 for correct installation.

6. Start-up

6.1 Electrical connection

DANGER
RISK OF
ELECTRIC SHOCK
Connect the pump to the mains using a multiple-pole switch or other device ensuring multiple-pole discon-
nection (interruption of all the supply wires) from the mains, with a contact separation of at least 3 mm.
Remove the terminal board cover by first removing the screws.
Carry out the connections as indicated on the back of the terminal board cover, and as shown in fig. 3 for
single-phase versions and in fig. 4 for three-phase versions.
16
FIGURE 1
Correct installation
A = Eccentric reductions.
B = Positive gradient.
C = Good immersion.
D = Large bends.
E = Suction pipe diameter ≥ pump port-
diameter.
F = Suction lift depends on the pump and
installation (*).
G = The pipes should not weigh on the
pump but on separated supports.
(*) The suction lift is determined based on
liquid temperature, flow resistance and
NPSH required by the pump.
Make sure that the rated voltage corresponds to the supply voltage.
Ground the pump before making any other connection.
We recommend that a high sensitivity differential switch (30 mA) be in-
stalled as extra protection against lethal electric shocks in the event of
faulty grounding.
RECOMMENDED POWER CABLE SECTION
CABLE TYPE H05VV-F
Single- 3x0.75 mm
phase 3x1 mm
3x1.5 mm
Three- 4x0.75 mm
phase 4x1 mm
4x1.5 mm
H05RN-F H07RN-F
3x0.75 mm 3x1 mm
3x1 mm
FIGURE 2
Incorrect installation
1 = Sharp bend: high flow re-
sistance.
2 = Insufficient immersion:
sucking air.
3 = Negative gradient: air
pockets.
4 = Pipe diameter < pump
port diameter: high flow
resistance.