Gianneschi BMA-M Series User manual

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SELF-PRIMING ELECTRO PUMP
BMA-M SERIES
OPERATING MANUAL FOR CENTRIFUGAL SELF-PRIMING
ELECTRICAL PUMP WITH INTEGRATED GRINDER.
Edition
Date
Edited
Emitted
Approved
01
23/01/15
A. Dini
G. Ferrari
C. Gianneschi
Revision
Date
Updated
Emitted
Type of update
Date
Approved

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INDEX
1INTRODUCTION .................................................................................................................................... 4
1.1 Preface ............................................................................................................................................. 4
1.2 Safety................................................................................................................................................ 4
1.3 Validity ............................................................................................................................................. 4
1.4 Guarantee ........................................................................................................................................ 5
1.5 Inspection of delivered items........................................................................................................... 5
1.6 Instruction for transport and storage .............................................................................................. 5
1.6.1 Transport ................................................................................................................................. 5
1.6.2 Storage .................................................................................................................................... 7
1.7 Name Plate....................................................................................................................................... 7
1.8 Spare Parts ....................................................................................................................................... 9
2GENERAL............................................................................................................................................. 12
2.1 Pump Description........................................................................................................................... 12
2.2 Condition of use ............................................................................................................................. 13
2.3 Construction Feature ..................................................................................................................... 14
2.3.1 Pump Casing and Impeller..................................................................................................... 14
2.3.2 Diffuser .................................................................................................................................. 15
2.3.3 Mechanical Seal..................................................................................................................... 16
2.4 Self-priming action ......................................................................................................................... 17
2.5 GRinder. ......................................................................................................................................... 17
2.6 Materials ........................................................................................................................................ 18
3INSTALLATION .................................................................................................................................... 18
3.1 Preliminary Operations .................................................................................................................. 18
3.2Installation Guide lines................................................................................................................... 18
3.2.1 Noise Level............................................................................................................................. 18
3.2.2 Piping Installation.................................................................................................................. 19
3.2.3 Suction Pipes ......................................................................................................................... 19
3.2.4 Delivery Pipes ........................................................................................................................ 19
3.3 Electrical Connections.................................................................................................................... 20
3.4 Pre Start-Up Check ......................................................................................................................... 21
3.5 Start- Up ......................................................................................................................................... 21
3.6 Stopping Pump............................................................................................................................... 21

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4MAINTENANCE ................................................................................................................................... 22
4.1 Cleaning.......................................................................................................................................... 22
4.1.1 Cleaning the macerator......................................................................................................... 23
4.1.2 Cleaning the impeller. ........................................................................................................... 23
4.2 Repleacing impeller and Mechanical Seal...................................................................................... 24
4.2.1 Replacing the impeller........................................................................................................... 24
4.2.2 Replacing the mechanical seal .............................................................................................. 25
4.2.3 Adjusting Impeller Clearance ................................................................................................ 26
4.2.4 Adjusting Cutting Clearance .................................................................................................. 28
5TROUBLESHOOTING ........................................................................................................................... 30
6BRUSHES RePLACING (Only DC Version) ............................................................................................ 33
INDEX OF FIGURES.
Figure 1 Lifting instruction for pump unit. ..................................................................................................... 7
Figure 2 Example of pump name plate .......................................................................................................... 8
Figure 3 BMA-M exploded view ................................................................................................................... 10
Figure 4 Body pump internal view. .............................................................................................................. 13
Figure 5 Drain, fill and inspection port......................................................................................................... 14
Figure 6 Gap between Impeller and diffuser................................................................................................ 15
Figure 7 Check of correct gap between Impeller and diffuser..................................................................... 15
Figure 8 Detail of mechanical seal................................................................................................................ 16
Figure 9 Water-fill plug................................................................................................................................. 17
Figure 10 Mechanical seal assembly ............................................................................................................ 26
Figure 11 Impeller face vanes must be within 0.2 –0.3mm diffuser plane for most efficient operation. .. 27
Figure 12 Clearance between rotary and stationary cutter......................................................................... 28
Figure 13 Fixed cutter ring and rotary cutter. .............................................................................................. 29

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1INTRODUCTION
This booklet describes operating procedures for centrifugal self-priming electrical pump “BMA-M” series.
These instructions must be followed to ensure safe and proper installation, operation and maintenance
of the machine. They should be brought to the attention of anyone who installs, operates or maintains the
machine or associated equipment. Ignoring these instructions may invalidate all applicable warranties.
1.1 PREFACE
This manual is intended for technicians and maintenance staff and for those who are in charge of
ordering spare parts.
The use of these machines must be made by qualified and experienced personnel, in full compliance with
local legislation.
This manual contains important and useful information for proper operation and maintenance of this
electrical pump. It also contains important instructions to prevent potential accidents and damage, and to
ensure safe and fault-free operation of this electrical pump.
NOTE
Read this instruction manual carefully before commissioning electrical pump. Familiarize yourself with
el/pump operations and strictly obey to the instructions. Keep this manual with care after reading, and
read as necessary.
The data published here comply with the most recent information at the time of going to press. However
they may be subject to later modifications.
Gianneschi Pumps and Blowers reserves the right to change construction and design of the products at
any time without being obliged to change earlier deliveries accordingly.
NOTE
The manufacturer declines all responsibility in case of accident or damage due to negligence or lack of
observance of instructions given in this booklet, or application in conditions not conforming to details
indicated on motor plate.
All responsibility is also declined for damage caused by improper use.
1.2 SAFETY
This manual contains instructions for working safely with electrical pump. Operator and maintenance
staff must be familiar with these instructions.
This manual has been prepared by Gianneschi Pumps and Blowers with the utmost care. Nevertheless
Gianneschi Pumps and Blowers cannot guarantee the completeness of this information and therefore
assumes no liability for possible deficiencies in this manual.
Gianneschi Pumps and Blowers reserves the right to change safety instructions.
1.3 VALIDITY
The instructions are valid for the following products: BMA-M

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1.4 GUARANTEE
The general guarantee is valid for 24 months from date of material shipment. To check validity of
guarantee, the customer must communicate to Gianneschi Pumps and Blowers both product serial number
and number/date of purchasing document (invoices). The guarantee shall naturally cover any defect in
construction of material manufactured by Gianneschi Pumps and Blowers.
Gianneschi Pumps and Blowers shall not be bound to any guarantee other than the guarantee accepted
by Gianneschi Pumps and Blowers. The guarantee will be immediately invalidated if:
 Service and/or maintenance is not undertaken in strict accordance with instructions;
 The electrical pump is not installed and operated in accordance with the instructions;
 Necessary repairs are not undertaken by our personnel or are undertaken without our prior written
permission;
 Modifications are made to the products supplied without our prior written permission;
 The spare parts used are not original Gianneschi Pumps and Blowers parts;
 The products supplied are not used in accordance with their nature and/or purpose;
 The products supplied have been used amateurishly, carelessly, improperly and/or negligently;
 The products supplied become defective due to external circumstances beyond our control.
All parts which are liable to wear are excluded from guarantee. Damages caused by normal or unusual
wear, wear caused by incorrect use or galvanic currents are not covered by the warranty.
1.5 INSPECTION OF DELIVERED ITEMS
Visually inspect electrical pump upon receiving it. Check for both obvious and hidden damage. If damage
is found, record all necessary information on the bill of lading and file a claim with the final carrier. Check to
be sure that all parts of the shipment, including accessories, are accounted for.
In case of irregularity, contact Gianneschi Pumps and Blowers immediately, signalling the nature of the
discrepancy.
CAUTION
In case of doubt about pump safety, do not use it.
1.6 INSTRUCTION FOR TRANSPORT AND STORAGE
1.6.1 TRANSPORT
The electrical pump is too heavy to be moved by hand. Use the correct transport and lifting equipment.
Usually electrical pump is shipped on pallet. Leave it on pallet as long as possible in order to avoid damages
and to facilitate internal transport.
CAUTION
When using a forklift always set the forks as far apart as possible and lift the package with both forks to
prevent it from toppling over! Avoid jolting the pump when moving it!

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CAUTION
Pump and components are heavy. Failure to properly lift and support equipment could result in serious
physical injury or damage to pumps. Steel toed shoes must be worn at all times.
Electrical pump must always be moved and transported in horizontal position. Prior to move the pump it
is mandatory to verify following items:
 check the total weight of pump;
 find centre of gravity of the pump;
 find and check lifting points location.
For safe lifting to prevent material damages and/or personal injuries is recommended to use ropes or
belts properly positioned on the lifting eyebolts (if present).
CAUTION
When lifting electrical pump always use a proper lifting device, approved to bear the total weight of
the pump. Never go underneath a load that is being lifted!
WARINING
Lifting eyebolts fitted on single components of the unit pump assembly (pump or motor)
should not be used to lift total unit assembly.
If the electric motor is provided with lifting eyebolt, this lifting eyebolt is intended for maintenance
purpose of electrical motor only. The lifting eye is designed to bear the weight of electrical motor only!
It is not permitted to lift a complete pump unit by using only lifting eye bolt fitted on electrical motor!
During transportation, shocks, falls and humidity should be avoided.

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Figure 1 Lifting instruction for pump unit.
1.6.2 STORAGE
After receiving el/pump and inspected it, if it is not immediately installed on the plant, it is recommended
to repackage and store the unit indoors with vibration free, dust free and dry conditions.
Proper storage increases the service life of unit el/pump. For a proper storage proceed as follows:
Store electrical pump unit at indoor clean, dry and vibration free area;
 Do not store el/pump in area with a temperature less than 5°C. For lower temperature it is
mandatory completely drain the pump from any liquids which freeze at temperature of around
0°C;
 Fill body pump with rust-preventative liquid that is compatible with pump gaskets and
elastomers;
 Drain the excessive liquid from the pump;
 Rotate the shaft by hand in order to impregnate all internal surface with rust-preventative liquid;
 Cover the pump with plastic sheet or similar protective material;
 It is recommended that shaft is rotated periodically by hand to prevent binding of moving parts.
1.7 NAME PLATE
Pump name plate includes essential information required to identify pump type and technical data for
electrical motor and hydraulic performances.
Serial number is essential to uniquely identify the pump; this information is necessary to order spare
parts, to replace machine and also for field service inquires.
Before contact Gianneschi Pumps and Blowers company, it is strongly suggested to collect all information
listed on name plate, see Errore. L'origine riferimento non è stata trovata. and refer to Errore.
L'origine riferimento non è stata trovata..

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Figure 2 Example of pump name plate
N°
Symbol
Description
1
MP
Machine serial number
2
Type
Pump Model
3
H
Head (max min)
4
Q
Delivery (min/max)
5
Mot
Type of motor (single phase, three phases, direct current)
6
V
Rated Voltage
7
A
Rated current
8
kW
Installed power
9
rpm
Revolution per minute
10
Hz
Rated frequency
11
I.C.L
Insulation class
12
Serv.
Service
13
IP
Index protection
14
Weight
Pump weight
Table 1 Description of name plate fields

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1.8 SPARE PARTS
To correctly identify spare part to be order, please collect following data:
 Pump model;
 Pump serial number;
 Position number;
 Spare part name;
 Quantity of spare parts to be order;
 Exact reference who orders spare parts (company name or name/surname of person, address,
phone number, e-mail contact);
To facilitate selection of spare parts Gianneschi Pumps and Blowers can supplies two kinds of a pre-
defined spare parts kit, standard or extended spare parts kit. These kits include most usually recommended
spare parts for el/pump.
Manufacturer Address
Gianneschi Pumps and Blowers s.r.l.
via G. Pastore, n.° 19/21
55040 Capezzano Pianore (LU) –Italia
Tel.: [phone] Fax.: [phone]
web site: www.gianneschi.net
e-mail: [e-mail]

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Figure 3 BMA-M exploded view

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Item
Description
9
Spacer
13
Seeger ring
14
Mechanical seal
15
O-ring
16
Body pump screw
19
Diffuser screw
22
Electrical motor
23
Release Screw
24
Plug
26
Metal seal holder
27
Impeller
28
Spacer
29
Macerator blade
30
Diffuser
31
O-ring
32
Pump housing
33
Cover
34
Cover screw
35
Macerator body
36
Macerator impeller screw
37
Dowel pin
Table 2 Spare parts name.
Standard Spare Part kit
14
Mechanical Seal
15-31
O-Ring
37
Dowel Pin
-
Capacitor (Only in 1Ph version)
Extended Spare Part kit
14
Mechanical Seal
15-31
O-Ring
37
Dowel Pin
-
Capacitor (Only in 1Ph version)
27
Impeller
30-35
Diffuser with macerator body
29
Macerator Blade
-
Sheems
Table 3 Standard and extended spare parts kits.

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2GENERAL
2.1 PUMP DESCRIPTION
Horizontal self-priming electrical pump at double volute with open impeller designed for rapid self-
priming with integrated grinder.
To ensure maximum corrosion and wear resistance; body pump, diffuser and impeller are made in high-
quality marine bronze alloy, while pump shaft is made in stainless steel. Cutting unit is made in hardened
AISI 630.
Cutting action takes place with the rotation of the cutter at rated rpm against the fixed cutter.
A separate air pump or any other equipment are not required to priming pump, thanks to a particular
shape of body pump, the priming would be secured even without no-return valve.
The pump unit is suitable in marine application to discharge waste water with faecal matter, domestic
waste water, waste water with toilet paper and grey water. In any case the water content has to be the
larger part of the handled fluid.
If there is a question regarding the intended use of the equipment, please contact Gianneschi Pumps and
Blowers before proceeding.
WARNING
“BMA-M” series electrical pump is not suitable to handle petrol (gasoline) and inflammables liquids.
WARNING
These units are not designed to handle liquids other than sanitary sewage.
If pump is used with contaminated liquids with heavy or abrasive materials, the warranty will be voided.
WARNING
It is important that the grinder rotates in the correct direction to give an efficient grinding operation. This
must be checked on installation and commissioning and after any maintenance has been carried out.
Failure to observe this may lead to mechanical and/or electrical overload or lead to pump failure.

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Figure 4 Body pump internal view.
Standard electrical pump configuration includes one of the following:
 AC - three phases electric motor;
 AC - single phase electric motor;
 DC –electrical motor
Electric motors can be supplied for all main voltages and frequencies, either 50Hz and 60Hz.
2.2 CONDITION OF USE
Maximum operating conditions admitted for “BMA-M” series el/pumps are the following:
 Maximum pressure admitted inside pump casing: 8 bar;
 Maximum suction head: 8 mH2O;
 Liquid temperature range: -5°C to +60°C;
 Maximum ambient temperature: +50°C;
 Voltage variation admitted: ± 5%;
 Acoustic level: < 75db;
 Starts: 20 per hour (max. admitted);
 Abrasive liquids: not admitted;
 Acid liquids: Min. PH=5;
 Alkaline liquids: Max. PH=8;
 Suction velocity not lower than 1 - 1.5 m/s
When waste water is handled the duty points (Qdp)in continuous operation lie within 0.7 to 1.2 x Qm
Example = Qm: 6m3/h 4.2 <Qdp <7.2

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To minimise the risk of clogging/hardening avoid duty points for continuous operation at very low speeds
and small flow rates (<0.7 x Qm). Qm is defined as the middle value of flow range reported in pump
datasheet and/or pump label.
The BMA-M is designed to discharge faecal matter, waste water and toilet paper only.
Using the appliance to discharge any other materials may cause the unit to fail.
Further details about the application possibilities of specific pump are mentioned in the order confirmation.
The following items should not be introduced into the pump either directly or through a kitchen waste
disposal:
 Glass;
 Metal;
 Diapers;
 Socks, rags or cloth;
 Plastic objects (e.g., toys, utensils, etc.)
 Sanitary napkins or tampons.
In addition you must NEVER introduce into the pump:
 Explosives;
 Flammable Material;
 Lubricating Oil and/or Grease;
 Strong Chemicals;
 Gasoline.
Do not use the pump for purpose different from those for which it was delivered before contacting the
manufacturer Gianneschi Pumps and Blowers.
WARNING
Using a pump in a system or under system conditions (i.e. liquids, working pressure, temperature, etc..)
for which it has not been designed, may be hazardous for the user.
2.3 CONSTRUCTION FEATURE
2.3.1 PUMP CASING AND IMPELLER
Body pump is made of marine bronze with frontal inlet port and outlet port on pump top, the pump body
is closed by seal holder body on back side. A diffuser, with double volute design, ensures self-priming
action. On the diffuser inlet is installed the fixed cutter. On the bottom side of pump casing a drain hole is
located for drainage and cleaning purpose. The pump is fitted with open impeller at three blades. The
impeller is directly fixed on electrical motor shaft.
Figure 5 Drain, fill and inspection port.

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2.3.2 DIFFUSER
The innovative diffuser, designed by dual channel volute, has been thought for a fast priming.
Reduction of pump performances might be noted over the time by a decrease of maximum total head or
maximum delivery or by an increase of current absorption. Usually performances reduction can be an
indication of excessive gap between impeller and diffuser due to wear of the previous parts.
The clearance between volute and impeller should be always between 0.2 and 0.4mm. The sum of a and b
should not exceed 0.6mm.
Figure 6 Gap between Impeller and diffuser.
WARINING
The correct gap between impeller and diffuser can be checked by means of feeler gauge.
Figure 7 Check of correct gap between Impeller and diffuser
CAUTION
Improperly setting the clearance between impeller and diffuser can result in sparks,
unexpected heat generation and equipment damage.

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2.3.3 MECHANICAL SEAL
All pump types are equipped with leak-proof and maintenance-free mechanical seal. When air is
aspirated, the mating faces of the mechanical seal are hardly cooled or lubricated by the handled liquid. To
ensure adequate lubrication, the body pump must always be filled with handled liquid.
The life of a mechanical seal depends on various factors such as cleanliness of the liquid handled and its
lubricating properties. Due to the diversity of operating conditions it is not possible to give a data about life
time mechanical seal.
To assure maximum reliability an safely operation with el/pump, Gianneschi Pumps and Blowers
evaluates seal choices when pump is selected in accordance with technical requirements provided by
customer.
The mechanical shaft seal consists of two main parts the rotating part and the fixed part.
Figure 8 Detail of mechanical seal
CAUTION
Mechanical seal should never run dry.
Running mechanical seal dry, even if for a few seconds, can cause seal damages.
Physical Injury may occur if mechanical seal fails.
WARNING
It is recommended to check seal faces wear of mechanical seal every 1000 operating hours.

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2.4 SELF-PRIMING ACTION
“BMA-M” series pumps are self-priming type pumps. Self-priming happens by means of strong liquid
turbulence generated inside the pump. Therefore pump casing must be previously filled-up with liquid to
be pumped.
At pump starting, the impeller creates a strong turbulence between suction and delivery side and this
physical phenomena causes the air passage from suction pipe toward delivery pipe.
The particular design of diffuser, with double channel, produces a quick self-priming action; moreover the
diffuser includes also wear plate.
It is mandatory to fill body pump with liquid before first starting up or after a long period of inactivity. To
fill body pump remove water-fill plug, located on upper side of pump casing and fill body pump with
priming liquid until overflow it. During filling operation, we recommend to slowly rotate the plug-in shaft by
hand in order to allow the air vent into the piping system. Refit water-fill plug and tighten it as required.
Figure 9 Water-fill plug
WARNING
It is mandatory that filling body pump operation is done before first start-up of the pump and each
time body pump is, or could be, empty to avoid any damage to internal parts of the pump.
WARNING
Operating the pump dry will destroy the pump seal. If the pump has been dry operated, stop engine
immediately and allow the pump to cool down. Subsequently proceed with filling body operation.
2.5 GRINDER.
Prior to entering the impeller casing, large solids are reduced in size by a cutting system to ensure passage
through the pump without clogging.
The cutter assembly is comprised of hardened AISI 630 components; a rotary cylindrical cutter directly
connected to the shaft and a fixed cutting ring fixed to the pump diffuser.
The rotary cutter is freely rotating within the fixed cutter and, when the pump is running, liquid including
any particles passes by the cutters, whereby the particles are ground by the cutters to fine pieces avoiding
clogging and eventually stoppage of the pump.

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2.6 MATERIALS
Standard “BMA-M” series pumps are totally made in marine bronze alloy suitable for sea water.
Body pump, impeller and diffuser are in bronze alloy, while shaft is in Stainless Steel AISI 316 made. Both
parts of cutting unit are made in AISI 630 hardened.
3INSTALLATION
3.1 PRELIMINARY OPERATIONS
Before installation, ensure that mains power supply is grounded in accordance with local legislation and it
corresponds to electrical motor requirements, see detail on name plate § 1.7.
Check and verify that pipe connections are compliant with suction delivery ports of the pump.
Ensure that location and fluid handled is in according to what stated in § 2.22.2.
The end user has full reasonability for preparation of the foundation. Metal foundation should be painted
to avoid corrosion.
Foundations must be even and sufficiently rigid to withstand both static (weight) and dynamic forces of
unit pump and also to withstand possible short circuit forces.
3.2 INSTALLATION GUIDE LINES
Correct installation of electrical pump can be complex and it should be carried out only by qualified and
experienced personnel.
ATTENTION
During installing operation all regulations of safety and good practice must be followed. All installing
operation are carried out under full responsibility of the technician installer and/or final user of the unit.
For a proper installation of el/pump, we recommend to follow the instructions below listed:
 Ensure sufficient space around electrical pump in order to allow dismantling operation for
maintenance purpose;
 Install the pump in a dry and well ventilated location with room temperature ≤+ 50°C;
 The machine must be placed on a solid and clean surface in horizontal position;
 Install vibration dumpers between el/pumps and foundation, in order to reduce transmitted
vibration;
 Before starting new plants, always clean thoroughly, wash and blow, tanks, pipes and connections.
3.2.1 NOISE LEVEL
The noise level of the pump is lower than 75 dB. However, the noise level of 75 dB may be exceeded in
some installations and at certain operating points on the performance curve. Make sure that you
understand the noise level requirements in the environment where the pump is installed. Failure to do so
may result in hearing loss or violation of local laws.

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3.2.2 PIPING INSTALLATION
All piping must be independently supported, accurately aligned and preferably connected to the pump by
a short length of flexible piping to reduce stress on the pump head.
Ensure that pipes are fully sealed with jointing compound to the pump ports.
Pumps are supplied with threaded ports.
Check that suction and delivery pipes are correctly connected to pumps ports.
All pipes and containers connected to the pump must comply with the regulations and must be cleaned,
tension- free and intact.
Never draw piping into place by forcing at the flanged connections of the pump. This may impose
dangerous strains on the unit and cause misalignment between pump and driver;
Install the pipes well anchored on their own supports near to inlet and outlet points of the pump to avoid
their transmitting any vibration;
The pump should not have to support the weight of the pipe or compensate for misalignment;
For flanged connections, use only fasteners of the proper size and material;
WARNING
The nominal diameter of the pipes and of the connections built into the system
shall be the same size or larger than the nominal inlet and outlet diameters of the pump.
To avoid wrong functionality on suction side, the suction pipe sizes must be at least
as large as the pump suction connection.
It is recommended to install a valve on delivery line. This valve is required to regulate flow passage
and/or to isolate the pump for inspection and maintenance service.
To reduce the water hammer phenomena it is suggested to install a dampening arrangement on the
piping.
3.2.3 SUCTION PIPES
The length of the suction pipe should be as short as possible. If suction pipe length exceeds 10 meters, or
if many concentrated losses due to elbows or section decrease along the pipe are present, it is suggested to
use a pipe with a diameter greater than diameter suction port of the pump (suction pipe suction
port). Smaller diameters may cause losses of performances, while higher diameters may causes a low self-
priming capability.
Inside suction pipe, the fluid speeds recommended are up to 1.5 m/s. However, the speed shall not be
lower than 0.5 m/s to avoid deposits into the pipe.
The pipe must not trap air pockets that may cause intermittent pump operation. For this reason, suction
pipe must be completely air-tight, without “gooseneck” and with continuous upward slope toward pump
inlet. Avoid sharp bends as possible.
To avoid pump damaging it is suggested to install a strainer along suction line.
All curves, elbows, valves and fittings installed on suction pipe create pressure loss. For this reason we
suggest to verify if losses are not likely to jeopardize pump operation
A vacuum gauge is recommended where pump performance needs to be closely monitored as well a non-
returned valve and sluice valve.
3.2.4 DELIVERY PIPES
Delivery pipe should be air-tight.

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It is recommended to install isolation and check valve and manometer on delivery line. Isolation valve is
required for priming, flow regulation and service of the unit.
Cushioning devices should be fitted on delivery line protect the pump from pressure surge due to water
hammer phenomena.
Delivery pipe diameter shall be equal to diameter of delivery port of the pump.
3.3 ELECTRICAL CONNECTIONS
WARNING
Electrical connections must be made exclusively by qualified personnel in accordance with instructions
from electrical motor manufacturer or other electrical components and it must follow rules of local
National Electrical Code
It is recommended that electric motors and eventual connected accessories must be protected against
overloading by means of circuit breakers and/or fuses.
Circuit breakers and fuses must be sized in accordance with the full load amperage declared on motor
nameplate. It is recommended to install electrical breaker near the pump for emergency situations.
Prior to connecting the electrical wiring, turn the pump shaft by hand to make sure that it rotates freely.
Connect the electrical wiring in accordance with local electrical codes. To be sure to connect to ground
electrical motor.
Make certain the power settings on the pump match your power source
before attempting to operate the pump.
Motor connection should be as indicated on the motor tag (frequency, voltage, poles and max
consumption).
It is mandatory to verify that sense of rotation of electrical motor is the same as sense direction of
rotation indicated by red arrow adhesive label present on the pump.
WARNING
Please be aware that rotation in the wrong direction and/or pump
running dry may cause severe pump damage.
If the sense of rotation is not correct, please immediately modify it following below instructions:
 Incorrect rotation of three phases electrical motor:
The terminals of the power cable are marked with the IEC international codes. Their correct
connection to the L1(u), L2(v), L3(w) line ensures that the electric pump turns in the right
direction. The sense of rotation of the three phases electrical motor can be reversed by switching
any two phases;
 Incorrect rotation of single phase electrical motor:
Wire the motor according to electrical scheme attached in the terminal box cover. In the unlikely
event that the rotation is still incorrect, contact Gianneschi Pumps and Blowers;