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GB SIDE CHANNEL SELF-PRIMING PUMP

User and maintenance manual

Machinery series /

EEM, ENM, ENT, ALM, ALT

Partly completed machinery series

EEMQ, ENMQ, ENTQ, ECC, ALMQ, ALTQ, ALCC

s.n.c.

Fig. 1

Fig. 2

Fig. 3A Fig. 3B

Fig. 5

Fig. 8

Fig. 6

Fig. 4

Fig. 9

Fig. 7

Fig. 10 Fig. 11 Fig. 12

Fig. 13 Fig. 14

Fig. 15 Fig. 16 Fig. 17 Fig. 18

Fig. 19 Fig. 20 Fig. 21 Fig. 22

Fig. 23 Fig. 24 Fig. 25 Fig. 26

GB USER AND MAINTENANCE MANUAL

Translation of the original instructions

Reproduction, for any purpose, of parts of the text or of the

drawings is prohibited without prior written consent from the

manufacturer.

WARNING concerning machinery

Consult carefully before installing the machinery.

WARNING concerning partly completed machinery

Consult carefully before incorporating the partly completed machinery.

When reading, omit information relative to parts that are not present.

Comply with all applicable general safety criteria, to guarantee safe use of

the machinery in which the partly completed machinery is incorporated.

IMPORTANT

Themachineryandpartlycompletedmachinerydescribed hereinmustonlybe

usedbypersonswithappropriateknowledgeoftheiruse.Theymustnotbeleft

in a place accessible to children or to persons that might use them in an

inappropriate and, consequently, potentially dangerous manner. They must be

used exclusively in compliance with the intended use declared by the

manufacturer and in compliance with the safety specifications indicated in this

manual.Theymustalwaysbesupervisedduringuse.

Chapter 9 and relative subchapters, printed in italics, contain information for

maintenance exclusively for use by qualified technicians and must be

performedusingappropriate personal protectiveequipment.

This manual describes the use of the pump in compliance with the design

specifications and illustrates the technical specifications, methods of

installation, use and maintenance and information concerning residual

risks related to use. The manual must be considered part of the pump and

be kept for future consultation for the entire useful life of the pump.

The manufacturer shall not be held responsible in cases of improper use

of the pump, use contrary to specific national regulations, installation not in

conformity with the declared specifications, faults in the power supply,

unauthorized modifications and operations, use of non-original spare parts

or parts not relative to the specific model, total or partial failure to comply

with the instructions indicated herein.

CONTENTS

1 – DESCRIPTION OF SYMBOLS USED - GLOSSARY ...................37

2 – USE OFTHE MACHINERY/PARTLYCOMPLETED MACHINERY......37

2.1 – Specifications of pumped liquid .............................................37

2.2 – Environment of use .................................................................38

3 – TECHNICAL DESCRIPTION............................................................38

3.1 – Specifications...........................................................................38

3.2 – List of components ..................................................................38

3.3 – Maximum priming height ........................................................39

3.4 – Pumping direction....................................................................39

3.5 – Shaft sealing devices ..............................................................39

3.6 – Optional accessories available ..............................................39

4 – INSTRUCTIONS FOR INSTALLATION AND USE .......................39

4.1 – Handling....................................................................................39

4.2 – Installation and use..................................................................39

4.2.1 – Preliminary operations............................................39

4.2.2 – Assembling the hoses.............................................40

4.2.3 – Electrical connection – general instructions ...........40

4.2.3.1 – Connection of single-phase and three-phase pumps 40

4.2.3.2 – Connection of direct current pumps................40

4.2.4 – Starting and stopping..............................................41

4.3 – Washing and storage..............................................................41

4.4 – Use of the by-pass (optional device).....................................41

4.5 – Demolition.................................................................................41

5 – INFORMATION ON RESIDUAL RISKS..........................................41

5.1 – Contact with moving parts......................................................41

5.2 – Temperature of accessible surfaces......................................41

5.3 – Risks caused by spattering and leakage of fluids................41

5.4 – Residual risks caused by faulty operation ............................42

6 – TROUBLESHOOTING ......................................................................42

7 – DECLARATIONS ...............................................................................43

8 – WARRANTY........................................................................................43

9 – NOTES FOR THE SERVICE TECHNICIAN (reserved for qualified

technicians) ...............................................................................................43

9.1 – Disassembling the hydraulic part of the pump.....................43

9.2 – Assembling the hydraulic part of the pump ..........................43

9.2.1 – Replacing the lip seal (brass models type 20 and 50)..........43

9.2.2 –Replacing the lipseal (brass models type 25-30-35-40).......44

9.2.3 – Replacing the mechanical seal ....................................... 44

9.3 – Replacing the brushes ........................................................... 44

1–DESCRIPTIONOFSYMBOLSUSED-GLOSSARY

Safety hazard

Danger of electric shock

Danger of damaging the pump

• The series of products EEMQ, ENMQ, ALMQ, ENTQ and ALTQ are

partly completed machinery identical, respectively, to the machinery of

series EEM, ENM, ALM, ENT and ALT, except for the fact that they are

supplied without the switch and cable for connection to the power

supply but provided with an electrical terminal block. In the rest of the

manual, reference will only be made to the series without the suffix –Q.

When switch and cable are mentioned this refers to the completed

machinery, while when terminal block is mentioned this refers to the

corresponding partly completed machinery.

• The term “series ALCC” refers to the pumps AL 12/20, AL 24/20, AL

12/25, AL 24/25, AL 24/40.

• The type of power supply is indicated in the box identified by the word

“Motor” in the pump ratings plate. 1~ means “single-phase alternating

current”, 3~ means “three-phase alternating current” and

means “direct current”.

2 – USE OF THE MACHINERY/PARTLY COMPLETED

MACHINERY

The machinery or partly completed machinery is a self-priming pump of

“side channel” type. It has been designed and manufactured specifically

for transferring and handling liquids, thanks to some important features:

very rapid self-priming capacity, i.e. suction of air contained in the suction

hose to start pumping;

no damage to the pump if the liquid in the suction tank finishes;

possibility of reversing the flow of liquid (for models supplied with

alternating current).

Although it has been designed for professional use, it can also be used in

a domestic environment, providing the user has become acquainted with

its use, by carefully reading the instructions contained in this manual.

2.1 – PROPERTIES OF PUMPED LIQUID

the liquid to be pumped:

- must have no hard suspended particles (sand, gravel, etc.) which can

cause rapid wear of internal parts. If the liquid to be pumped has this risk

factor, install a suitable filter in the suction hose.

- must not be aggressive towards the materials with which it comes

into contact, i.e.:

1) the material forming the pumping body (brass for series EEM, ENM,

ENT, ECC - AISI 316 stainless steel for series AL);

2) the material of which the shaft is manufactured (AISI 316 stainless

steel);

3) the materials of which the gasket and the sealing device are

manufactured (see Chapter 3.5).

4) (only for models with by-pass) acetalic resin.

- must have suitable viscosity: these pumps are not suitable for very

viscous liquids (such as honey). For series ENM, ENT, ALM, ALT pumps,

consider as an indication of maximum viscosity a mineral oil type SAE 30

at a temperature of 40° C; all other series are suitable for liquids with

viscosity similar to water.

- must have a maximum fluid density of: for series ENM, ENT, ALM,

ALT pumps: 1.1 g/cm3; for other series: density similar to water.

- must have a minimum temperature of: -15°C, in any case above the

freezing temperature of the liquid to be pumped.

WARNING

- must have a maximum temperature of: models without by-pass:

depending on the rubber used to manufacture the gaskets: 90°C (NBR

rubber, which is standard unless otherwise indicated on the pump), 110°C

(EPDM rubber), 130° C Viton rubber; models with by-pass: 90°C.

Examples of use of the series with brass pump body (series EEM,

ENM, ENT, ECC)

Water, sea water, gas oil, oil, soaps; in the European Union pumps with

brass pumping body are generally not considered suitable for use with

food products, such as milk or olive oil (ref. standard UNI EN 13951).

Application in the food sector is subordinate to checking suitability of the

pumps with the provisions of the specific HACCP plan drawn up by the

user.

Examples of use of series with AISI 316 stainless steel pump body,

material suitable for foods and with excellent resistance to corrosion

and abrasion (series AL)

- liquid foods, such as wine, vinegar, olive oil, milk; for these uses

appropriate methods of washing and disinfecting the pump must be

adopted, according to type of liquid (see Chapter 4.3);

- compatible corrosive liquids (such as fungicides or liquid fertilizers)

- the same liquids permitted for brass pumps, in this case ensuring a much

longer useful life.

Use of the pump in environments in which there is danger

of explosion or fire (as defined by the law) is prohibited; in

particular, do not use with petrol, acetone, solvents, etc.

2.2 – ENVIRONMENT OF USE

- Ventilated, clean and dry closed environment.

- Normal or marine atmosphere, ambient temperature between –15 °C

and 40 °C and maximum relative humidity 80%.

- Maximum installation altitude: 1000 meters above sea level.

3 – TECHNICAL DESCRIPTION

3.1 - SPECIFICATIONS

The pump can perform suction of liquid from one port (suction port),

sending it to the other port (discharge port); the essential parameter

characterizing a pump is capacity Q (quantity of liquid transferred in a

given time); the speed of the pumping operation depends on this.

The capacity of a pump is not fixed, but depends on the total manometric

head H required by the installation, which is the sum of two contributions:

1) difference in height (measured vertically) between the level of liquid in

the tank of destination and that of the tank or origin;

2) energy losses caused by liquid flow in pipes, valves, fittings, and other

elements inserted along its path.

Tab. A indicates the capacity (in litres per minute) as a function of total

manometric head (in metres) for the various pump types. The same table

also indicates the value of the maximum head Hmax developed by the

pump (expressed in bar, unit of pressure measurement), which is reached

when the discharge port is closed, and the maximum equivalent A-

weighted sound pressure level (LeqA) obtained at 1 metre from the

surface of the pump operating with water at 20°C.

3.2 – LIST OF COMPONENTS

Tab. B contains the list of all components, and refers to Figs. 1, 2, 3A, 3B,

4, 9.

-Fig. 1: exploded drawing of single-phase electric pumps type ENM 20,

ENM 20 L, ALM 20, ALM 20 L, EEM 20, EEM 20 L and three-phase

electric pumps type ENT 20, ENT 20 L, ALT 20 e ALT 20 L.

-Fig. 2: exploded drawing of single-phase electric pumps type ENM 25,

ENM 25S, ENM 30, ENM 35, ENM 40, ENM 50, ALM 25, ALM 30, ALM

40, ALM 50, EEM 25, EEM 30, EEM 35, EEM 40 and three-phase electric

pumps type ENT 25, ENT 25S, ENT 30, ENT 35, ENT 40, ENT 50, ALT

25, ALT 30, ALT 40, ALT 50;

- Fig. 3A: mechanical seal; Fig. 3B: the various systems adopted for fixing

the rotating part of the seal;

- Fig. 4: components of the motor part of direct current pumps; the pumps

CC 12/20, ECC 24/20, AL 12/20, AL 24/20 have the motor part as shown

in Fig. 3 and the pump part as shown in Fig. 1; the pumps ECC 12/25,

ECC 24/25, ECC 24/40, AL 12/25, AL 24/25, AL 24/40 have the motor

part as shown in Fig. 3 and the pump part as shown in Fig. 2.

- Fig. 9 replaces the parts ref. 18, 19, 20 of Figs. 1 and 2 in the partly

completed machinery of series EEMQ, ENMQ,ALMQ, ENTQ and ALTQ.

TYPE 1 m 5 m 10 m Hmax

(bar)

LeqA

(dB) TYPE 1 m 5 m 10 m Hmax

(bar)

LeqA

(dB)

EEM 20 L, ENM 20 L, ENT 20 L 12 30.6 69 ECC 24/25 55 45 30 2.2 75

EEM 20, ENM 20, ENT 20 28 22 15 2.2 77 ECC 24/40 140 108 70 1.7 80

EEM 25, ENM 25, ENT 25 43 29 91.2 71 ALM 20 L, ALT 20 L 80.4 60

ENM 25S, ENT 25S 88 83 77 4.8 83 ALM 20, ALT 20 32 27 21 1.8 77

EEM 30, EEM 35 86 67 42 1.7 74 ALM 25, ALT 25 43 28 81.0 71

ENM 30, ENT 30 86 69 45 1.7 81 ALM 30, ALT 30 89 80 70 4.0 83

ENM 35, ENT 35 86 69 45 1.7 81 ALM 40, ALT 40 137 112 76 1.6 77

EEM 40 125 97 64 1.5 77 ALM 50, ALT 50 205 176 140 2.6 82

ENM 40, ENT 40 130 100 68 1.7 78 AL 12/20 25 17 71.2 79.7

ENM 50 230 208 170 2.9 91 AL 24/20 25 17 71.3 81.8

ENT 50 230 208 170 2.9 91 AL 12/25 55 36 91.3 75.8

ECC 12/20 25 18 10 1.5 75 AL 24/25 55 38 16 1.5 80.8

ECC 24/20 26 20 13 1.6 76 AL 24/40 157 120 73 1.6 72.1

ECC 12/25 55 42 22 1.8 74

Data obtained with water at 20°C – Tolerances: standard ISO 2548 for Class C mass produced pumps

Tab. A

3.3 – MAXIMUM PRIMING HEIGHT

The maximum priming height is the maximum difference in level between

the pump and the level of the liquid to be pumped with which it can

perform suction of air from the suction hose and start pumping.

With water at 20°C this value can reach 6 metres, but it depends on the

quantity of liquid present inside the pump during priming; this quantity

depends on the installation methods of the pump and on the configuration

of the hoses. To achieve maximum priming performances, comply with the

following installation measures:

1) Discharge hose: during priming the liquid contained in the pump is

pushed outwards through the discharge port; therefore, the quantity of

liquid decreases, causing reduced priming; avoid this by positioning the

discharge hose so that liquid that has flowed out returns inside the pump,

for example, by pointing the initial part upwards with a difference in level of

50 cm.

2) Suction hose: the initial part pointing upwards with a difference in level

of 20 cm increases the quantity of liquid that remains inside the pump after

it is stopped.

3.4 – PUMPING DIRECTION

Pumps with alternating current motor are two-way: by reversing the

direction of rotation of the motor the direction of liquid flow is reversed. For

this purpose, machines are equipped with a 3-way switch: 0 = off, 1 = on,

2 = on with liquid flowing in the opposite direction to position 1. The typical

pumping directions in single-phase machinery are described in Fig. 8,

lines 2 and 3. In three-phase machinery the direction depends on the

connection to the power supply.

In direct current partly completed machinery, the pumping direction is fixed

and is unrelated to connection of the power supply cables to the terminal

block. The typical pumping direction is described in Fig. 8, line 1. The

typical pumping directions are not binding, and in some examples could

be inverted.

3.5 – SHAFT SEALING DEVICES

The impeller, i.e. the rotating mechanical part that allows the pump to

operate is activated through a shaft by the external motor; the pump body

has an opening for the shaft to pass through. The “shaft seal” is the device

that prevents liquid from leaking through the space between the shaft and

the opening in the pump body. Two types of seal are adopted:

-ring seal (lip seal) with stainless steel spring; the standard seal used in

brass versions is the NBR rubber lip seal, unless otherwise specified by a

label affixed to the pump;

-mechanical seal (Fig. 3A); the standard type of seal used in the

stainless steel series AL is the ceramic/graphite/ AISI 316/ NBR rubber

version, unless otherwise specified by a label affixed to the pump; it greatly

increases the number of hours for which the pump can operate before

requiring maintenance operations and does not cause wear on the shaft.

Various types of seals are available on request (Viton lip seal, silicon

carbide mechanical seals and/or parts in EPDM rubber, Viton, Teflon) to

adapt to the majority of requirements linked to temperature, corrosion and

abrasion. Should you require assistance, please contact our technical

department.

3.6 – OPTIONAL ACCESSORIES AVAILABLE

Handle and truck for easy transport.

Manual by-pass to adjust capacity and head; the relative instructions for

use are included in this manual.

Discharge plug or cock, to drain part of the pump body without removing

the hoses.

Filters, to prevent foreign bodies from entering.

Hose kit.

Hose fittings in nylon or stainless steel (for series AL pumps).

4 – INSTRUCTIONS FOR INSTALLATION AND USE

4.1 – HANDLING

Check the weight of the pump indicated on the ratings plate and adopt

methods in accordance with national safety regulations relative to manual

handling of loads. If necessary use lifting systems, lift trucks, personal

protection equipment for manual handling of loads and to prevent the

danger of crushed limbs. If the pump is to be moved frequently,

accessories (handle and truck) are available to facilitate handling.

Do not lift or transport the pump using the power cable, the hoses or

projecting parts (i.e. the inverter or terminal box). Lift the pump by

firmly holding the metal part.

4.2 – INSTALLATION AND USE

To install machinery supplied completed, strictly follow the

procedures indicated below. To incorporate partly completed

machinery, consider the following instructions within the limits of

their applicability. Use them to draw up instructions for use of the

final machinery. All mechanical and electrical installations to be

performed on unprotected parts must be carried out exclusively by

qualified technical personnel adopting personal protective

equipment to protect hands and limbs against crushing, to protect

from sprays and splashes of liquid and to protect against electrical

shock. These must be selected in relation to specific risk

assessment for the installation to be carried out.

Do not start the pump before having completed the installation.

4.2.1 – PRELIMINARY OPERATIONS

- Remove the pump from the packaging and check that all parts are intact:

any breakages that occur during transport can cause dangers of

mechanical or electrical nature.

- Assemble the handle (Fig. 5) or the truck (Fig. 6), if provided. During

transport, the pump must be disconnected from the power supply. After

transport, the truck must be positioned on a completely horizontal surface.

Check that accidental movements of the truck cannot cause danger.

- Position the pump in a dry place (the pump is not submersible) on a

horizontal surface; leave an empty space of at least 10 cm in front of the

WARNING

1Motor fan 14 Seal washer 28 Conical gasket

2Fan cover 15 Tab 29 Threaded sleeve

3Front bearing 18 Capacitor (single-phase pumps

only)

30 Hex head screw

4Pump flange 31 Hex head hollow screw

5Counterflange 19A Toggle switch

(series EEM only)

61 Rear guard

6Brush holder 62 Rear bearing

7Brush 19B Rotary switch (other single-phase

and three-phase series)

63 Casing with stator

8Counterflange gasket 64 Shaft with rotor

9A Stainless steel Seeger ring 20 Inverter box 65 Rear internal part

9B Stainless steel seal ring 21 Terminal box 66 Front internal part

9C Brass seal ring 22 Terminal block 67 Seal

9D Seal spacer 23 Stud 67A Mech. seal rotating part

10 Pump body 24 Cable clamping bracket 67B Mech. seal fixed part - counter-

face

11 Pump cover 25 Straight fitting

12 O-ring 26 Curved fitting 67C Mech. seal fixed part - shroud

13 Impeller 27 Ring nut 68 Motor seal

Tab .B

motor cooling fan; secure the feet with bolts to prevent movement or falling

caused by vibrations during operation, to prevent people from tripping over

hoses or the power cable. Make the connections without damaging the

pump.

Never hang or fix the pump using the power cable.

- Fill the pump body with liquid to be pumped through one of the ports,

preventing the liquid from leaking out either through this port or the other

port; as the pump is self-priming, this operation is only necessary the first

time, or if the pump has been emptied; in fact, when it stops sufficient

liquid remains inside for subsequent priming.

Traces of lubricant (cutting fluids, greases) may be present on the inner

walls of the pumping body. If these substances can pollute the liquid to be

pumped (i.e. food substances), initial pumping must be performed

following the cleansing procedure described in Chapter 4.3.

Do not operate the pump dry.

4.2.2 – ASSEMBLING THE HOSES

- As shown in Fig. 5 or Fig. 6, screw the hose fittings to the ports; these

are provided standard with brass pumps, on request (in nylon or stainless

steel) for series AL pumps, after checking that the gaskets are present in

the fittings; the assembly shown is only indicative, the two fittings, straight

and curved, can be inverted.

- Provide a pair of hoses of suitable length and with the same internal

diameter as the external diameter of the fittings. The hose must be flexible

spiral, made of a material suitable for the type and temperature of the

liquid to be pumped, resistant to the internal vacuum and with a higher

operating pressure than the pressure generated by the pump (equal to

Hmax in Table A).

Insert the ends of the hoses into the hose fittings; secure the connection

using a hose clamp. It is not necessary to install a check valve; if the

liquid can contain hard suspended particles install a suitable filter in the

suction hose to retain them; the hose must not exert excessive forces on

the pump. Avoid excessive bending of the hoses to avoid kinks.

Insert the free end of the suction hose into the receptacle from which liquid

is to be drawn, at a depth at least twice the diameter of the hose and at the

same minimum distance from the bottom. Insert the free end of the

discharge hose into the receptacle to receive the liquid.

The discharge hose must be fixed, without compressing it,

to prevent extraction from the collection receptacle during

start-up or operation, which would wet and contaminate the

surrounding environment. In the event of use with dangerous

liquids, wear personal protective equipment selected according to

the specifications of the liquid, to prevent danger of contamination

or contact with exposed body parts.

4.2.3– ELECTRICALCONNECTION –GENERALINSTRUCTIONS

The inverter box (ref. 20) and the terminal box (ref. 21)

contain electrical parts; they must be disassembled

exclusively by a qualified technician, in compliance with

safety regulations.

Before making the electrical connections, check cables, plugs and sockets

for damage. Electrical connections must be protected against dampness

and sprays of liquid. Only use cables and components in conformity with

the safety provisions of Directive 2006/95/EC and suitable for the

current absorbed by the motor.

Pumps with three-phase and direct current motors are not provided with

overload protection; pumps with single-phase motors are provided with an

internal overload protection device and automatic reset only if the words

“Protetta da sovraccarico - Overload protected” appear on the yellow label

affixedtothepump.

4.2.3.1–CONNECTIONOFSINGLE-PHASEANDTHREE-PHASEPUMPS

Required specifications of the power supply

network

• voltage and frequency coinciding with those indicated on the pump

ratings plate (tolerances: 10% on voltage and 2% on frequency);

• provided with an efficient earthing system and equipped with a high

sensitivity differential switch (30 mA) installed in line;

• protected against overcurrents

• (if the pump is not already equipped with this) equipped with overload

protection system calibrated to the current (A) indicated on the pump

ratings plate;

• (for models with cable without plug and models with terminal block)

equipped with a power isolation device.

Models with switch, cable and plug

• select a power socket compatible with the plug, equipped with earthing

device, away from possible sprays of liquid and in an accessible

position.

• Make sure the switch is positioned to off (0).

• Arrange the cable so that it cannot be knocked or tripped over.

• Insert the plug into the power socket.

• If an extension cable is required, it must be selected according to the

current regulations and the data indicated on the pump ratings plate; the

electrical connection must be protected against possible sprays of liquid.

Models with switch and cable, without plug

Connection to the power supply network must be performed

exclusively by qualified technicians, in compliance with the

regulations regarding electrical installations and with all the safety

rules applicable to the type of operation.

The power supply must be disconnected before making the

connection. First connect the earth conductor, followed by the line

conductors.

Models with terminal block

Connection to the power supply network must be performed exclusively

by qualified technicians, in compliance with the regulations

regarding electrical installations and with all the safety rules

applicable to the type of operation. The power supply must be

disconnected before making the connection. The power cable

must be provided with earth conductor. Connection of the cable to the

partly completed machinery is described below with reference to Fig.

• Remove the cover of the terminal box (ref. 21) after having

unscrewed the fixing screws.

• Insert the power cable through the ring nut (ref. 27), the conical

gasket (ref. 28), the threaded sleeve (ref. 29) of the terminal box

and clamp the ring nut.

• Connect the earth conductor to the motor casing at the stud ref. 23

identified by the symbol , using the bolts provided.

• Connect the power conductors to the terminal block (ref. 22)

following the instructions indicated in the label inside the cover of

the terminal box.

• Use the cable clamping bracket ref. 24 to fix the power cable, the

right way up or overturned depending on the diameter of the cable;

check that it is secured effectively against pulling and twisting of

the cable.

• Replace the cover of the terminal box and fasten it using the

screws removed previously.

4.2.3.2– CONNECTION OF DIRECT CURRENT PUMPS

Required specifications of the power supply network

• voltage coinciding with that indicated on the ratings plate of the partly

completed machinery (tolerances +5% - 10%);

• protected against overcurrents;

• equipped with overload protection system;

• equipped with a power isolation device.

• the partly completed machinery is designed to be supplied by a

battery; if another type of generator is used, assess the risk of

dangerous voltages being present on accessible metal parts of the

partly completed machinery; in particular, bear in mind that the

negative pole of the terminal block supplying the partly completed

machinery is connected to the casing of its motor.

Connection instructions

• Remove the terminal box (ref. 21), after having unscrewed its fixing

screws.

• Insert the power cable through the cable grommet.

• Connect it to the terminal block complying with the polarity (+, -)

indicated.

• If it is necessary to secure the cable against pulling or twisting, take

WARNING

the necessary measures.

• Replace the terminal box and fasten it using the screws removed

previously.

4.2.4 – STARTING AND STOPPING

• Do not start the pump before having completed installation.

• Do not start the pump with wet hands or while standing on wet

surfaces.

• Under no circumstances insert fingers or other body parts or

objects through the ports: the pump contains moving parts.

Check that the hoses are positioned correctly. If the pump was supplied with a switch,

start it by switching this to the on position corresponding to the direction of pumping

required. If the pump was supplied with the terminal block, start it byconnecting it to

thepower supply.

In this phase, take great care that there are no leaks or

sprays of liquid from the installation. It these are present,

stop thepumpimmediatelyandtakeaction toeliminatethem.

The pump must not run with the hoses completely closed for

more than one minute.

After a short period required for priming, the pump will start to transfer

liquid.

If pumping is not obtained and the suction hose bubbles air into the liquid

to be sucked up this means that the pump is pumping in the opposite

direction: in this case stop the pump and reverse the pumping direction or

stop the pump and invert connection of the hoses to the ports.

Operation must always be supervised;

check that the following do not occur:

overheating of the motor surface, reduction

in speed or stopping, abnormal noises or other events that indicate

malfunctioning. In this case, stop the pump immediately, remove the

plug (where present) from the socket and consult Chapter 6.

The noise produced by brass pumps type 20, 25, 30, 35, 40 if they are run

when dry (to be avoided at all costs) does not indicate a fault, but is

caused by the fact that in these models the impeller slides on the shaft to

facilitate maintenance.

To stop the pump, position the switch to stop (0) or disconnect the power

supply.

After it is switched off, the pump remains filled with

liquid, which is essential for priming; if there is any

chance of the ambient temperature dropping to

below the freezing point of the liquid, empty the pump body to avoid

breakage.

4.3 – WASHING AND STORAGE

Before removing the hoses discharge any pressure present

inside the pump. If accessible surfaces are hot (see Chapter

5.2) wait for the pump to cool before handling it or use

appropriate gloves.

If the pump is used for dangerous substances, the user is

responsible for defining the procedures for handling, washing,

storing and disposal of waste fluids in compliance with the safety

regulations in force for the specific substances treated.

If the pumped liquid has no particular problems, (i.e. water, sea water or

soap), in the event of an extended period of disuse, wash the inner walls

of the pump by pumping clean water, empty completely, dry the outer

surfaces with a soft cloth, coil the electric cable and hoses and store in a

dry and protected area.

Cleansing procedure

This allows deeper cleaning than the procedure described previously and

can be used in many cases. In uses with foods it is performed during

installation and as part of the wash cycle.

• Prepare a detersive solution in a receptacle (i.e. common dishwashing

liquid diluted with clean hot water at 40-50°C).

• Insert the suction and discharge hoses of the pump into the receptacle

and recirculate the liquid for 5 minutes.

• Pump clean water until complete rinsing is obtained.

Use with slightly perishable food substances (vegetable oil, wine,

vinegar)

• Before and after use:

• Carry out the cleansing procedure;

• use the pump to recirculate a suitable sanitizing and disinfecting solution

(i.e. based on peracetic acid) for an adequate time;

• rinse the inside of the pump body by pumping clean water until the

sanitizing and disinfecting solution has been completely eliminated.

Before use, perform the start-up procedure, discarding a first fraction

of liquid. Dispose with the fluid used for washing and the discarded

liquid from start-up in compliance with the current provisions of law.

In the specific case of use with vegetable oils, if the pump is to remain

in disuse for a short period of time and subsequently used again for

the same type of oil, it can simply be emptied and the ports capped.

Use with highly perishable food substances (such as milk)

Wash before use, at each time interval established by the HACCP

protocol applied and after use, disassembling the pump, cleansing and

disinfecting its parts with methods depending on the type of liquid. This

operation must be carried out by qualified personnel experienced in

performing the pump disassembly and reassembly procedures.

4.4 – USE OF THE BY-PASS (optional device)

The by-pass is a device to adjust capacity and head of the pump and is

located on the outside in the form of a knob; it can be rotated counter-

clockwise to reduce the maximum capacity to around half and the

maximum head by around a quarter. During the priming stage close the by

-pass by rotating the knob completely clockwise, as priming capacity is

greatly reduced with the by-pass open.

4.5 - DEMOLITION

At the end of its useful life the pump must be demolished, in strict

compliance with the standards in force in the country of use. Do not

neglect any residue of liquid present inside the pump body.

Only EU countries

The pump belongs to the category of electric and electronic

equipment (EEE). The symbol shown here means that it cannot be

disposed of as domestic waste. At the end of its useful life the

owner must deliver the pump to a WEEE collection point, where it

will be subjected to recycling. For more information, contact the

relevant local authority department or the store from which the pump was

purchased.

5 – INFORMATION ON RESIDUAL RISKS

5.1 – CONTACT WITH MOVING PARTS

Do not insert objects through the holes in the fan cover (ref. 2), which

covers the motor cooling fan.

5.2 – TEMPERATURE OF ACCESSIBLE SURFACES

In typical conditions of use, the outer surfaces of the motor part

can reach temperatures in excess of around 40°C higher than the

surrounding ambient temperature. The outer surfaces of the

pumping body reach the temperature of the pumped liquid, and

can therefore be very hot or very cold. In the event of these temperatures

representing a danger, the user must adopt suitable protective measures

(enclose the pump with barriers, handle using suitable gloves).

5.3 –RISKSCAUSEDBYSPATTERINGANDLEAKAGEOFFLUIDS

Undesirable leakage or spraying of liquid may occur, for example,

in the following cases:

- installation procedure carried out incorrectly;

- wear and tear of hoses;

- wear and tear of sealing device (resulting in spattering of liquid from the

space between the flange and the pump body) or of other gaskets (O-ring

or counterflange gasket);

- corrosion of the pump body;

- incorrect reassembly after maintenance;

- pumping of cold liquids, with water vapour condensation forming on the

outer surface of the pumping body and consequent dripping.

These events cause a wet environment (with danger of electric shock,

danger of slipping, etc.) and the risk of persons, animals or objects being

struck by jets of liquid. In particular, maximum caution must be taken when

pumping liquids that are flammable, corrosive, at high temperature or in

WARNING

any way dangerous for living things or for the environment. The user must

assess these risks and if necessary provide appropriate protection from

jets of liquid (i.e. screens) and collection vessels in a suitable position.

Liquid from leakages must be removed and disposed of correctly and

safely.

5.4 – RESIDUAL RISKS CAUSED BY FAULTY OPERATION

The pump is not provided with audible or visual alarms to indicate

breakages or malfunctioning. Therefore, the user must take suitable

measures to avoid damages (i.e. flooding) caused by failure or faulty

operation of the pump (i.e. installation of alarms, back-up pumps, etc.).

Problem Possible cause Remedy

Motor not turning and no humming

sound

No electricity Check the power supply

System overcurrent or overload protection

triggered Reset the protective device; if the problem persists contact

a qualified technician

Plug not inserted Insert the plug

Power connections interrupted or incor-

rect electric connection Contact a qualified technician

Switch positioned to “off” Switch to the correct “on” position

Internal overload protection triggered (only

for pumps provided with this)

The protection is reactivated automatically; if the protection

is triggered again this means the application is too heavy

for the pump

Electrical fault Contact a qualified technician

Motor making humming sound but not

turning Impeller blocked Contact a qualified technician

Electrical fault Contact a qualified technician

Motor turning at low speed and

pump has reduced capacity Incorrect supply voltage Supply the pump with the voltage indicated on the

ratings plate

Overload Application too heavy for the pump

Motor turning but reduced or no liquid

capacity

Suction hose end incorrectly positioned See Chapter 4.2.2

Infiltration of air or leakage of liquid Check hoses, tightness of hose clamp, fitting gaskets

Hoses or filters (if provided) clogged Clean hoses and filter

Pump clogged Contact a qualified technician

Pump worn Contact a qualified technician

Operating head too high Check the head

Pump not priming

Excessive suction height Check the suction height

Pump not filled with liquid Fill the pump with liquid

Suction hose end incorrectly positioned See Chapter 4.2.2

Pump incorrectly positioned See Chapter 4.2.1

Infiltrations of air Check hoses, tightness of hose clamp, fitting gaskets

Wear and tear on gaskets or seal Contact a qualified technician

Pump worn Contact a qualified technician

Pump bubbling air in the suction tank Incorrect pumping direction Reverse pumping direction

Motor overheating

Overload Application too heavy for the pump

Excessive liquid temperature Application too heavy for the pump

Electrical fault Contact a qualified technician

Abnormal noise during pumping

Foreign bodies have entered the pump Contact a qualified technician

Impeller broken Contact a qualified technician

Impeller seized Contact a qualified technician

Bearing worn Contact a qualified technician

Pump leaking Wear and tear on gaskets or seal Contact a qualified technician

6 - TROUBLESHOOTING