salmson MULTI-VE 2G Instalacion E Instrucciones página 27

ENGLISH
6.1.4 Programming option :
It is possible to reduce the maximum allowable frequency of the
pump thanks to the encoder.
This option must be used for special liquid (high density, high viscosi-
ty,...) in order to avoid any overload.
Option
- Set the switch (fig. 4 - item S) on position SERVICE.
- According to the chosen mode, "M1" or "M2" or "M3" appears.
- Select "OP" thanks to touch pad.
- "OP" appears.
- Validate.
- Select "ON" or "OFF".
(the information which is blinking is the one validated)
- Validate.
- Set the switch back on position "OPERATION".
ON
1 2
ON
1 2
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 purposes, to carry out a rinsing of the pump befo-
re any using with potable water supply.
6.3. Filling • degassing
Never operate the pump dry, even briefly.
CAUTION !
Pump under pressure (see fig. 2)
- Close the discharge valve (item 3).
- Open the venting plug (item 5), the suction valve (item 2) and com-
pletely 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-variator.
Pump in suction (see fig. 1) : two possible cases.
1st case (see fig. 5.1)
- Close the discharge valve (fig.1 - item 3),
- Open the suction valve (fig. 1 - item 2).
- Remove the venting plug (fig. 1 - item 5).
SERVICE
1s
0,1s
OPERATION
- 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 - item 14) fitted with a Ø 1/2" stopcock and a
funnel.
The length of the pipe must be at least 50 mm tal-
CAUTION !
ler than the venting plug level.
- Close the discharge valve (fig. 1 - item 3), open the suction valve
(fig. 1 - item 2).
- Open the stopcock (fig. 5 - item 14) and the venting device
(fig. 1 - item 5).
- 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 - item 5).
- Close the stopcock (fig. 5 - item 14) (which can be left in place),
remove the pipe, close the venting device (fig. 1 - item 5) and
screw again the drain-priming plug (fig. 1 - item 6).
PUMP UNDER PRESSURE : Operating in pressure
CAUTION !
regulation mode : MODE 2 to ensure the detection
of zero flow, set the non-return valve before the pressure sensor (i.e.
at pump suction if the sensor is mounted on this one – see figure 6).
6.4. Starting up
Depending on conveyed fluid and operating cycles of the
pump, surface temperature (pump, motor) can exceed 68°C.
Take necessary means to avoid injuries.
The pump must not operate at zero flow (closed
CAUTION !
discharge valve) for more than 10 minutes with cold
water (T°C < 40°C) and more than 5 minutes above 60° C.
We recommend to ensure a minimum flow of about 10 % of the nomi-
nal 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.
- Start again the pump.
- If necessary (particularly if the suction height exceeds 5 m) repeat
these operations.
- If water leaks at draining plug (it means the pump delivers its pres-
sure), slowly open the discharge valve.
- The pump has to be primed.
- Check pressure stability at discharge with a manometer, if instabili-
ty, perfect air draining.
- In case of failure, do the filling in again and start the operation
again.
- To perfect air draining, close the discharge valve and the draining
plug, then stop the pump 20s, start the pump again and open the
draining plug. Do it as long as air comes out.
- Open the discharge valve in order to have the wished working
point.
- Check that the current input does not exceed the value indicated
on the pump data plate.
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