Start Up; Filling And Venting - Wilo IPL Manual De Instrucciones

CAUTION!
Always connect the motor in accordance to the wiring diagramm inside the
terminal box cover or on the motor housing.
Terminals must not be connected to a voltage higher than the one given on
the type plate.
• Comply with respective installation and operating instructions when wiring to
automatic pump control device (DDC or Building Management Systems).
Connect the motor leads as shown on the connection diagram located on the
name plate or inside the cover of the conduit box. Be sure the following guide-
lines are met:
1. AC power is with in +/- 10 % of rated voltage with rated frequency (see motor
name plate for ratings)
or
2. AC power is within +/- 5 % of rated frequency with rated voltage
or
3. Combined variation in voltage and frequency of +/- 10 % (sum of absolute
values) of rated values, provided the frequency variation does not exceed +/- 5
% of rated frequency

8 Start up

8.1 Filling and venting

Pump, suction and inlet piping must be filled and properly vented.
CAUTION!
Never operate the pump dry.
Dry-running will damage the mechanical seal!
In order to avoid noise and damage due to cavitation a minimum inlet pressure
must be ensured at the pump suction port. This minimum inlet pressure
depends on the operating conditions and the duty point of the pump and must
be accordingly calculated. Please contact WILO or your WILO distributor if this
further information is required.
• Vent pumps by unscrewing its air vent plugs (Fig. 1, pos. 9).
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.
• Check the direction of rotation by briefly switching on the pump and make sure
that rotation corresponds with the arrow on the motor (fan cover or flange). If
rotation is backwards, please contact your local electrician to correct the rota-
tion.
• Ensure a minimum flow of at least 10 % of the maximum flow of the pump.
Installation and Operating Instructions Wilo-IPL
Possible damage of the motor!
Possible damage of the pump!
Risk of scalding!
English
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