Starting Up - Wilo MVIE Série Notice De Montage Et De Mise En Service

ENGLISH
100%
Frequency
in % of
the pump
rotation
40%
0 2

6. Starting up

If the pump is delivered as separate part, not integra-
CAUTION !
ted into a system we mounted, the standard confi-
guration mode is the external control 0-10V.
6.1 Configurations
The pump is controlled with an external system (see fig.7)
If the pump is integrated in a booster assembled by ourselves, consult
the booster instructions.
In normal operation the state of the leds is as follows (see fig.4) :
State of
LED Light on
LED1
Detected failure
RED
LED2
The pump
GREEN
turns
LED3
Pump
GREEN
alive
6.2 Preliminary rinsing
Each of our pumps is tested regarding hydraulic features in factory,
some water may remain in them. It is recommended for hygien pur-
poses, to carry out a rinsing of the pump before any using with potable
water supply.
6.3 Filling - degassing
Never operate the pump dry,
CAUTION !
even briefly.
Pump under pressure (see fig. 2)
- Close the discharge valve (item3).
- Open the venting plug (item5), the suction valve (item2) and comple-
tely fill the pump.
- Close the venting plug only after water flows out and complete aeration.
- In hot water, a stream of water may escape from the venting plug port.
- Take all required precautions as regards persons and motor-converter.
18
Control signal 0-20mA
Pump
stop
security
area
4 Input in current (mA)
Function
Flashing Switched off
Failure
Limit No failure
alarm
The motor is in
The motor
acceleration or
is stopped
deceleration phase
Pump
/
dead
Control laws
100%
Frequency
in % of
the pump
rotation
40%
20 0
Pump in suction (see fig.1) : two possible cases.
1st case (see fig.5.1)
- Close the discharge valve (fig.1-item3), open the suction valve (fig.1-
item2).
- Remove the venting plug (fig.1-item5)
- Unscrew about 4 turns the bottom drain-priming plug (fig.1-item 6)
located on the pump casing.
- Put a funnel into the venting plug port and completely fill the pump
and the suction pipe.
- After water flows out and total air exit, filling is achieved.
- Screw the venting plug and the bottom drain-priming plug back in.
2nd case (see fig.5.2)
- Filling can be made easier by fitting on the suction pipe of the pump, a
vertical pipe (fig.5-item14) fitted with a Ø 1/2" stopcock and a funnel.
- The length of the pipe must be at least 50 mm taller than the venting
plug level.
- Close the discharge valve (fig.1-item3), open the suction valve (fig.1-
item2).
- Open the stopcock (fig.5-item14) and the venting device (fig.1-item5).
- Unscrew about 4 turns the drain-priming plug (fig.1-item 6).
- Completely fill the pump and the suction pipe until water flows out of
the venting plug (fig.1-item5).
- Close the stopcock (fig.5-item14) (which can be left in place), remove
the pipe, close the venting device (fig.1-item5) and screw again the
drain-priming plug (fig.1-item6).
6.4 Starting up
Depending on conveyed fluid and running of pump, surface
temperature can exceed 68°C. Take necessary means to
avoid injuries.
CAUTION !
- We recommend to ensure a minimum flow of about 10 % of the nominal
flow of the pump to avoid the formation of a vapour lock at the top
of the pump.
- Keep the discharge valve closed.
- Start the pump.
- Open draining plug to drain air. If no water leaks within 20s, close the
plug and stop the pump, then wait 20s to allow air to settle.
Control signal 0-10V
Pump
stop
security
area
1 2 Input in a voltage (V)
The pump must not operate at zero flow (closed dis-
charge valve) for more than 10 minutes with cold water
(T°C < 40°C) and more than 5 minutes above 60° C.
10