Checking The Direction Of Rotation - Pentair NOCCHI MULTI EVO Series Instruction Manual

ENGLISH
and accumulated pressure during
start­up.
The pump must never be operat­
ed with the shutoff valve on the
delivery side closed. The delivery
valve must be opened as soon as the
pump has been started up, to prevent
damage to the latter by an excessive in­
crease in liquid temperature.
If the pump has difficulty in in­
creasing pressure, repeat opera­
tions 1 to 6.
Installation of self-priming pumps
above the liquid level (positive suction
head) Figure 2, Figure 3 and
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. If a filler cap is fitted on the pipeline
downline of the pump (delivery side),
remove the cap and use the hole for
filling. Otherwise use the pump filling
hole.
7. 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.
8. Close the pump filler cap.
9. If the filler hose is on the pipeline, con­
tinue to fill the pipe and pump until
water overflows also from this second
hole.
10. Insert the second filler cap.
20 20
"Installa-
refer to installa­
11. 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 11.
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 start­up.
If there is no foot valve or check
valve on the suction port, filling
must be repeated before each
start­up.
If the pump has difficulty in in­
creasing pressure, repeat opera­
tions 1 to 11. If, after several at­
tempts, the pump does not operate
correctly, see the fault section "quick
troubleshooting guide"
Operation with frequency con­
verter
If the pump is connected to a frequen­
cy converter during start­up, the pump
should run at maximum speed. If the
pump does not prime within 5 minutes,
stop the motor and repeat steps 1 to 11.

Checking the direction of rotation

(three phase motor)
1. Locate the arrow indicating the direc­
tion of rotation on the pump or fan co­
ver.
2. Start up the motor.
3. Check the direction of rotation looking
at the electric pump from the side of
the motor fan.
4. Stop the motor.