Xylem CO COM IM - Manual (Page 18)

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Ground the pump before making any other connection. The installation technician must make sure that
the wiring system complies with local regulations. The single-phase version has a built-in overload pro-
tection; the three-phase version must be equipped by the user with a suitable protection.
Install a magneto-thermal motor protector set to the rated current.
6.2 Priming
FIG. 5
The pump must be filled with water (fig. 5) before you start it. Dry running
even for a short time would seriously damage the mechanical seal.
Fill both the suction pipe and the pump body with water through the fill plug near the delivery port.
Carry out this operation carefully to prevent formation of air pockets inside the suction pipe or the pump
body.
With three-phase motors start the pump briefly to check the direction of rotation: this must correspond to
that indicated by the arrow on the pump body. If the pump rotates in the wrong direction, switch two supply
leads.
To make sure that the shaft is rotating freely, introduce a screwdriver in the hole in the centre of the motor
fan cover.
– Frost can damage the pump if it remains full and inactive at freezing tempe-
ratures.
– The maximum noise of the electric pump when properly installed and ope
rating within its limits does not exceed 70 dB(A).
7. Maintenance
The pump does not require any regularly scheduled maintenance.
It may require occasional cleaning of the liquid end and replacing of any worn or damaged hydraulic
components.
All maintenance operations should be carried out by skilled and qualified personnel.
Make sure that the multiple-pole switch is disconnected before carrying out
any maintenance operations. DANGER
RISK OF
ELECTRIC SHOCK