DGFLOW PRESFLO MULTI Руководство - Страница 2

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Installation

Preliminary checks

Take the PRESFLO

out of

the packaging and check the

following:

- check for damage,

- check the RATINGS correspond

with those required,

- that the cable bushings and

screws are in place,

- that PRESFLO

's inlets and

outlets are clean and free of any

packaging materials,

- that the check valve moves

smoothly.

Hydraulic connections

the joint in two pieces allows ra-

pid connection to the sy-

stem. DO NOT apply se-

alant inside the 2-piece

joint because it already

has an internal o-ring.

Orientation

PRESFLO

can be installed at

any angle depending on the ow

direction, as indicated in the

diagrams.

Electrical con-

nections

The electrical

connections

should be made

as indicated in the

Position

diagram which

PRESFLO

can either be tted

can also be found

directly to the pump outlet or

on the inside of

anywhere along the delivery

the circuit cover.

line. Never install taps between

the pump and PRESFLO

. Do

Attention! The cable

not install a non-return valve

bushings and circuit board

between PRESFLO

and the taps,

cover must be properly

meanwhile it is possible, although

assembled and secured

not necessary, to install a non-

in order to guarantee IP

return valve on the suction piping

65 grade protection of the

of the pump.

electrical components.

NOTE 1 - DRY RUNNING = there is no ow and the pressure is lower

than that of the pump start-up pressure (Pm). It occurs when there is no

water. After 15 seconds PRESFLO

stops the pump and indicates an ERROR

message. PRESFLO

AUTOMATICALLY tries to resume NORMAL SERVICE

at intervals of increasing time (1, 15, 30, 60 minutes and successively once

every hour - 24 H for AU/NZ - ). If PRESFLO

detects any pressure and/or

ow, NORMAL SERVICE is resumed, otherwise, the pump is stopped again

until the next attempt is made. A MANUAL attempt to resume NORMAL

SERVICE can be made at any time.

NOTE 2 - FREQUENT START-UP = the repeated stopping and starting of

the pump at intervals of less than 1 minute from each other. This occurs

when the ow rate is less than 2 litres/min. This may cause damage to the

pump. In event of small leaks (dripping), PRESFLO

's water accumulator

guarantees that the pump starts/stops at time intervals of over 1 minute

(less than 60 starts/hour) and that FREQUENT START-UP errors do not occur.

In the event of a major leak or extended use at excessively low ow rates

(less than 2 litres/min), the pump may be started/stopped as often as once

every few seconds, putting the pump at risk of damage. In this case, after

about 40 minutes, PRESFLO

stops the pump for the following 30 minutes

(in order to let it cool down) and indicates an ERROR message. If the time

First start-up

Attention

Priming the pump

The pressure applied

by the water column above

For instructions on how to

PRESFLO

must not exceed that

prime ( ll) the pump, see the

of the pump start-up pressure

pump manual.

(Pm). If, for example, PRESFLO

Attention

is installed at a height 20 metres

(65 ft) below that of the highest

PRESFLO

tap in the system, the pressure

check valve: do not use the

detected by PRESFLO

will be

PRESFLO

approximately 2 bar (30 psi).

pump for priming.

A model with Pm = 2.5 – 35 psi

bar should, therefore, be installed

Switching the pump on

in order to guarantee that the

The red (Power On) LED lights

pump is started when a tap is

up; PRESFLO

turned on.

instantly detects

that there is no

Attention

The maximum pressure

pressure within the system and

produced by the pump

starts the pump

must be at least 0.5 bar (7 psi)

(the green 'Pump

higher than the start-up pressure

On' LED lights up).

If, within 15 secon-

(Pm). If the pressure produced by

ds of starting up,

the pump is too low, PRESFLO

will stop the pump and indicate a

PRESFLO

'dry running' error message.

correct priming of

the pump, it stops the pump

and indicates a 'dry running'

error message.

Attention

When the pump is started for

the rst time, it may have to

be run for longer in order to

Line

Motor

START button

Nut

to restart the

pump and

complete the

priming procedure.

Seal

Cable bushing

interval between the starts-stops is more than 10 seconds (and therefore

poses less of a risk to the pump), PRESFLO

will allow the pump to be

used for more than 30 minutes. Once that enough time has passed to allow

the pump to cool down it is restarted AUTOMATICALLY. The pump may be

restarted MANUALLY any time.

NOTE 3 - OVERCURRENT = electric absorption of the pump (in Ampere)

exceeding the max. allowed (I max). By means of the con guration, it is

possible to set the max. current allowed (I max). During the start-up phase

of the pump PRESFLO

allows for a few seconds the current to exceed the

Imax value. If the absorptions remain above the set Imax value, PRESFLO

stops the pump to avoid damaging the motor and signals an anomaly.

PRESFLO

will not automatically restart the pump. The pump may be

MANUALLY restarted at any moment. Should the problem persist an anomaly

will again be signalled. The manual restart can be repeated several times

since PRESFLO

does not limit the number of attempts.

NOTE 4 - SHUT-OFF FLOW RATE = Flow rate (Qa) of around 2 litres/min

(0,5 gpm) below which PRESFLO

stops the pump.

is tted with a

's outlet to ll the

does not detect the

complete the priming

procedure.

Press the STOP/RE-