Start Up; System Filling - Venting; Maintenance / Service - Wilo Star Serie Instrucciones De Instalación Y Funcionamiento

ENGLISH
The pump/installation should be grounded in compliance with local regulations. A ground fault
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interrupter can be used as extra protection.
8

Start up

8.1 System filling - Venting

Proper fill and pressurize the system with liquid.
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CAUTION!
Never operate the pump dry. The system must be filled before starting the pump.
Ensure that all isolation valves are open.
The pump is normally vented automatically after a short operatinal period. If it becomes ne-
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cessary to vent the pump, please observe the following procedure:
Switch off pump.
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WARNING!
Depending on the operating condition of the pump and/or installation (fluid tempe-
rature) the pump/motor can become very hot.
Close the valve on the discharge side.
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WARNING!
Depending on the fluid temperature and the system pressure, if the vent screw is
completely loosened hot liquid or vapour can escape or even shoot out at high
pressure.
Place a container under the back of the pump to catch any water that may run out.
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Protect all electrical parts against the leaking water.
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Carefully loosen the vent plug with a suitable screwdriver (Fig. 8) continue until water appe-
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ars, but do not remove.
After 30 sec. re-tighten the plug.
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Re-open isolating valve.
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Switch-on pump.
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8.2 Speed setting of Star S... pumps
The speed is changed by means of a rotary switch at the terminal box. 1 represents the lowest
and 3 the highest speed.
9

Maintenance / Service

All servicing should be performed by an authorized service representative!
WARNING!
Dangers caused by electrical energy must be excluded.
All electrical work must be performed after the electrical supply has been switched
off and secured against unauthorized switching.
WARNING!
At high water temperatures and system pressure close isolating valves before and
after the pump. First, allow pump to cool down.
These pumps are maintenance free. Self-lubricated by the system fluid, these pumps have no
seals to leak or coupling to break.
8
Possible damage of the pump
Risk of burning if the pump is touched
Risk of scalding
(Fig. 7)
Electrical shock hazard
Risk of scalding