Pre-Start Checks; Prime The Pump; Negative Suction Head Pumps; Positive Suction Head Pumps - Xylem Lowara ResiBoost MMW Manual De Instalación, Funcionamiento, Mantenimiento

Display for Display for
MMW and MMA and MTA
MTW
MP MIN.PRESS
WARNING:
If the system is connected to an aque-
duct, check that the sum of the pressure
of the aqueduct and the maximum pres-
sure of the pump does not exceed the
value of the maximum permitted operat-
ing pressure (nominal pressure PN) of
the pump or of the converter of the MTW
or MMW.

7.2 Tank pressure

After setting the required operating pressure of the
system, modify the precharge pressure of the dia-
phragm tanks. The pre-charge value of the dia-
phragm tank can be calculated with this formula:
Description bar
operating pressure (SET
POINT) — 0.6 = pre-
creased or de- charge pressure
creased accord-
ingly.
See
If more than 1
information.
minute is re-
quired to fill the

7.3 Pre-start checks

system during
Make sure that the following are completed before
initial start-up
you start the pump system powered and controlled
and the convert-
by the converter:
er triggers the
• Mechanical installation
dry running
• Hydraulic installation
alarm, increase
• Electrical installation
the MP parame-
• Check the pre-charge pressure of the tank
ter
• Program the converter
(MIN.PRESS)
as long as the
NOTICE:
pumps are run-
Do not run the system dry. Start the pump only after
ning. (Make
filling it completely with liquid.
sure that the
pumps are
primed). Lastly,

7.4 Prime the pump

decrease the
• Prime the pump using the priming cap on the in-
MP parameter
(MIN.PRESS) to
the minimum
permitted pres-

7.4.1 Negative suction head pumps

sure.
• Fill the intake pipe by pouring water into the pri-
Set the mini-
mum pressure
• Fill the pump bodies at the caps near the delivery
below which the
pump is auto-
matically stop-

7.4.2 Positive suction head pumps

ped after the
• Open the check valve installed on the intake
delay time (dL
parameter).
• When there is sufficient head, the water over-
This function
prevents dry
running.
The EL function
• If this does not occur, prime the pump at the caps
(EXT.LOW WA-
TER) and the
MP function
(MIN.PRESS)
NOTICE:
can both be en-
Never run the pumps for more than 5 minutes with
abled.
the delivery gate closed.

7.5 Start the pump

• The pump is at a standstill and the LEDs (9) and
• Press (2) to enter AUTOMATIC mode.
• The pump starts up and the LEDs (9) and (10)
• For MTW and MTA models, check the direction
• After a few seconds, providing the pump is
• If instead the pressure remains steady at 0.0 bar
kPa
operating pressure (SET
POINT) — 60 = pre-
charge pressure
Pressure tank installation
take pipe (when applicable) or following the in-
structions in the manual provided with the pump.
ming hole in the intake pipe of the pump.
flange. Refer to the pump manual.
duct.
comes the resistance of the non-return valve in-
stalled on the pump's intake line and fills the
pump bodies.
near the delivery flange. Refer to the pump man-
ual.
(10) are off when the converter is turned on.
are illuminated if the pressure of the system is
below the SET POINT value.
of rotation of the motor.
primed correctly, the pressure of the system
shown on the display starts to increase and, with
all the utilities closed, the pump stops.
after a few seconds of operation, with the utilities
en - Original instructions
on page 29 for more
43