Pentair NOCCHI FP Multi EVO-A Manual De Instrucciones página 19

Installation of self-priming pumps
above the liquid level (positive suction
head) Figure 2,
tion" Tab1.
1. Ensure that the pipeline downline of
the pump is free (delivery side)
2. Open the shutoff valve downline of the
pump (delivery side).
3. Open the shutoff valve upline of the
pump (suction side).
tion Figure 2.
4. Open the valve near the pump to bleed
the air.
5. Remove the filler cap.
6. using a funnel, fill the pump body and
suction pipe (Figure 2), or only the
pump body (Figure 3) completely with
liquid, until it overflows from the hole.
7. Close the pump filler cap.
8. if the filler hose is on the pipeline, con-
tinue to fill the pipe and pump until
water overflows also from this second
hole.
9. insert the second filler cap.
10. Start up the pump and wait for the
liquid to be pumped. the pump can
run for 5 minutes to attempt to acti-
vate liquid suction. if the pump does
not generate pressure and flow rate,
repeat steps 1 to 10.
the check valve in Figure 3 serves to pre-
vent emptying of the pump under a siphon
effect at the time of shutdown, so that
liquid stays in the pump body for subse-
quent start-up.
if there is no foot valve or check
valve on the suction port, filling
must be repeated before each
start-up.
if the pump has difficulty in in-
creasing pressure, repeat opera-
tions 1 to 10. if, after several at-
Figure 3 and "Installa-
refer to installa-
tempts, the pump does not operate
correctly, see the fault section "quick
troubleshooting guide"
Pump start-up
use the electric pump according
to the performance specifica-
tions as stated on the data plate.
Always avoid operation of the
pump with the upline shutoff
valve closed (suction side). Dry
running of the pump can lead to over-
hearing and damage to the pump itself.
Never run the pump with the
shutoff valve downline (delivery
side) completely closed. in this
case, the water in the system reaches
very high temperatures, with the risk of
damage to equipment and scalding in the
event of escape of the liquid. in this situa-
tion, turn off the pump and leave the sys-
tem to cool.
Never use the pump in the event
of cavitation, as this can cause
damage to the hydraulic compo-
nents.
Pressure on the downline side of
the pump (delivery side) must
never exceed the maximum op-
erating pressure PN as indicated on the
pump data plate (see "Application limits"
Figure 5). Pressure downline of the pump
is obtained from the sum of the pressure
delivered and the pressure on the suction
side (gravity for installations with negative
suction head, aqueducts, or water system
where admissible or required).
1. Check that the shutoff valves downline
of the pump (delivery side) and upline
of the pump are in the open position.
2. Start the pump.
ENGLISH
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