Lowara DOMO GRI User manual

Installation, Operation
and Maintenance manual
DOMO
DOMO GRI
DOMO, DOMO GRI
Submersible pump u
nits

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2 DOMO, DOMO GRI - Installation, Operation and Maintenance Manual
Table of Contents
1Introduction and Safety ............................................................................................................................................ 4
1.1 Introduction ...................................................................................................................................................... 4
1.2 Safety ................................................................................................................................................................ 4
1.2.1 Danger levels and safety symbols ............................................................................................................... 4
1.2.2 User safety .................................................................................................................................................... 5
1.2.3 Protection of the environment..................................................................................................................... 6
1.2.4 Sites exposed to ionizing radiations............................................................................................................ 6
2Handling and Storage............................................................................................................................................... 7
2.1 Handling of the packed unit ............................................................................................................................ 7
2.2 Unit inspection upon delivery.......................................................................................................................... 7
2.3 Unit handling .................................................................................................................................................... 8
2.4 Storage ............................................................................................................................................................. 8
3Technical Description ............................................................................................................................................... 9
3.1 Designation ...................................................................................................................................................... 9
3.2 Denomination of the models........................................................................................................................... 9
3.3 Data plate ......................................................................................................................................................... 9
3.4 Identification code .........................................................................................................................................10
3.5 Names of the main components ................................................................................................................... 11
3.6 Intended use...................................................................................................................................................11
3.7 Improper use ..................................................................................................................................................11
4Installation ............................................................................................................................................................... 13
4.1 Precautions ..................................................................................................................................................... 13
4.2 Mechanical installation................................................................................................................................... 13
4.2.1 Installation area .......................................................................................................................................... 13
4.2.2 Permitted positions ....................................................................................................................................14
4.2.3 Permanent installation on support base ...................................................................................................14
4.2.4 Permanent installation with quick coupling.............................................................................................. 14
4.3 Start and stop levels.......................................................................................................................................16
4.4 Hydraulic connection ..................................................................................................................................... 17
4.4.1 Guidelines for the hydraulic system ..........................................................................................................17
4.5 Electrical connection...................................................................................................................................... 18
4.5.1 Ground........................................................................................................................................................ 19
4.5.2 Guidelines for electrical connection.......................................................................................................... 19
4.5.3 Guidelines for the control electric panel...................................................................................................19
5Use and operation ..................................................................................................................................................20
5.1 Precautions ..................................................................................................................................................... 20
5.2 Rotation direction check (three-phase motors) ............................................................................................21

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DOMO, DOMO GRI - Installation, Operation and Maintenance Manual 3
5.3 Starting and stopping .................................................................................................................................... 21
6Maintenance ............................................................................................................................................................22
6.1 Precautions ..................................................................................................................................................... 22
6.2 Maintenance every 6 months of operation ...................................................................................................22
6.3 Long periods of inactivity...............................................................................................................................22
6.4 Spare parts ordering ......................................................................................................................................22
7Troubleshooting......................................................................................................................................................23
7.1 Precautions ..................................................................................................................................................... 23
7.2 The unit does not start ...................................................................................................................................23
7.3 The thermal overload protection triggers..................................................................................................... 23
7.4 The unit runs but there is little or no flow rate ..............................................................................................24
7.5 The unit never stops....................................................................................................................................... 24
8Technical Information ............................................................................................................................................. 25
8.1 Applications.................................................................................................................................................... 25
8.2 Operating environment .................................................................................................................................25
8.3 Maximum head...............................................................................................................................................26
8.4 Maximum number of starts per hour............................................................................................................. 26
8.5 Mechanical characteristics ............................................................................................................................. 26
8.6 Electrical specifications.................................................................................................................................. 27
8.7 Sound pressure .............................................................................................................................................. 27
8.8 Dimensions and weights................................................................................................................................27
9Disposal...................................................................................................................................................................30
9.1 Precautions ..................................................................................................................................................... 30
10 Declarations........................................................................................................................................................31
10.1 EC Declaration of Conformity (Original) .......................................................................................................31
10.2 EU Declaration of Conformity (n. EMCD30)..................................................................................................31
11 Warranty .............................................................................................................................................................32
11.1 Information .....................................................................................................................................................32

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4 DOMO, DOMO GRI - Installation, Operation and Maintenance Manual
1Introduction and Safety
1.1 Introduction
Purpose of this manual
This manual provides information on how to do the following in the correct manner:
•Installation
•Operation
•Maintenance.
CAUTION:
This manual is an integral part of the unit. Make sure to have read and understood the manual
before installing the unit and putting it to use. The manual must always be
made available to
the user, stored in the proximity of the unit, and well kept.
Supplementary instructions
The instructions and warnings of this manual apply to the standard unit as described in the sale
documentation. Special version pumps may be supplied with supplementary instruction
manuals. For situations not considered in the manual or in the sales document, contact Xylem
or the Authorised Distributor.
1.2 Safety
1.2.1 Danger levels and safety symbols
Before using the unit, the user must read, understand and comply with the indications of the
danger warnings in order to avoid the following risks:
•Injuries and health hazards
•Damage to the product
•Unit malfunction.
Danger levels
Hazard level
Indication
DANGER:
It identifies a dangerous situation which, if not avoided,
causes serious injury, or even death.
WARNING:
It identifies a dangerous situation which, if not avoided, may
cause serious injury, or even death.
CAUTION:
It identifies a dangerous situation which, if not avoided, may
cause small or medium level injuries.
NOTICE:
It identifies a situation which, if not avoided, may cause
damage to property but not to people.

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Complementary symbols
Symbol
Description
Electrical hazard
Hot surface hazard
Danger, system pressurized
Do not use flammable liquids
Do not use corrosive liquids
Read the instruction manual
1.2.2 User safety
Strictly comply with current health and safety regulations.
WARNING:
This unit must be used only
by qualified users. Qualified users are people able to recognise
the risks and avoid hazards during installation, use and maintenance of the unit.
Inexperienced users
WARNING:
•
For EU countries: this product may be used by children aged 8 years and above and
persons with reduced physical, sensory or mental capabilities, or who lack experience and
knowledge, provided that they are being supervised and have been instructed on how to
use it safely, and understand the hazards involved. Children must not play with the product.
Cleaning and maintenance must not be carried out by children without supervision.
•
For countries outside the EU: this product is not intended for use by persons (including
children) with reduced physical, sensory or mental capabilities, or who lack experience and
knowledge, unless they are being supervised and have been instructed on how to use it by
a person responsible for their safety. Children should be supervised to ensure that they do
not play with the product.

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1.2.3 Protection of the environment
Disposal of packaging and product
Comply with the current regulations on sorted waste disposal.
Leaking of fluid
The unit contains a small quantity of lubricant oil: always put in place the necessary measures
to ensure that any spilled lubricant does not disperse in the environment.
WARNING:
It is prohibited to dispose of lubricating fluids and other hazardous substances in the
environment.
1.2.4 Sites exposed to ionizing radiations
WARNING: Ionizing radiation hazard
If the
unit has been exposed to ionizing radiations, implement the necessary safety measures
for the protection of people. If the unit needs to be despatched, inform the carrier and the
recipient accordingly, so that appropriate safety measures can be put in place.

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2Handling and Storage
2.1 Handling of the packed unit
WARNING: Crushing hazard (limbs)
The unit and its components may be heavy: risk of crushing.
WARNING:
Always wear personal protective equipment.
WARNING:
Check the gross weight marked on
the packaging.
WARNING:
Handle the unit in compliance with the current regulations on "manual load handling", to avoid
undesirable ergonomic conditions causing risks of back
-spine injury.
WARNING:
Take appropriate measures during transport, installation and storage to prevent contamination
from external substances.
The Manufacturer delivers the unit and its components in a cardboard box.
2.2 Unit inspection upon delivery
Inspect the package
1. Check that quantity, descriptions and product codes match the order.
2. Check the packaging for any damage or missing components.
3. In case of immediately detectable damage or missing parts:
- accept the goods with reserve, indicating any findings on the transport document, or
- reject the goods, indicating the reason on the transport document.
In both cases, promptly contact Xylem or the Authorised Distributor from whom the product
was purchased.
Unpacking and inspection of the unit
CAUTION: Cut and abrasion hazard
Always wear
personal protective equipment.
1. Remove packing materials from the product.
2. Check the unit for integrity and to make sure that there are no missing components.
3. In case of damage or missing components, promptly contact Xylem or the Authorised
Distributor.

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8 DOMO, DOMO GRI - Installation, Operation and Maintenance Manual
2.3 Unit handling
Lift the unit using the handle.
DANGER: Electrical hazard
Holding the unit by the
supply cord or the float switch is strictly forbidden.
WARNING:
During handling, make sure to avoid injury to people and animals, and/or damage to
property.
2.4 Storage
Storage of the packed unit
The unit must be stored:
•In a covered and dry place
•Away from heat sources
•Protected from dirt
•Protected from vibrations
•At an ambient temperature down to -30°C (-22°F), and relative humidity between 5% and
95%.
NOTICE:
Do not place heavy loads on top of the unit.
NOTICE:
Protect the unit from collisions.
Long-term storage of the unit
1. Completely empty the unit manually by tilting it towards the discharge port.
2. Follow the same instructions for the storage of the packed unit.
For further information about preparation for long-term storage, please contact Xylem or the
Authorised Distributor.

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3Technical Description
3.1 Designation
Submersible pump units for draining wastewater.
3.2 Denomination of the models
Series
Description
DOMO
Submersible pump units for draining wastewater with two-channel or vortex (DOMO VX)
impeller
DOMO GRI
Submersible pump units for draining wastewater with grinding system
3.3 Data plate
Figure 1: Single-phase
Figure 2: Three-phase

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10 DOMO, DOMO GRI - Installation, Operation and Maintenance Manual
Position
number
Description
Position
number
Description
1
Model
7
Maximum liquid temperature
2
Flow rate range
8
Rated output
3
Head range
9
Minimum head
4
Motor data
10
Maximum immersion depth
5
Manufacturing date
11
Serial number
6
Pump unit code
3.4 Identification code
Figure 3: DOMO
Position
number
Description
Notes
1
Series name
2
Rated output
HP x 10
3
Frequency
Empty = 50 Hz
6 = 60 Hz
4
Impeller type
Empty = two-channel
VX = vortex
5
Phase
Empty = single phase
T = three-phase
6
Version
7
Float switch
Empty = with float
GT = with tube float
SG = without float
Figure 4: DOMO GRI
Position
number
Description
Notes
1
Series name
2
Rated output
HP x 10
3
Frequency
Empty = 50 Hz
6 = 60 Hz
4
Phase
Empty = single phase
T = three-phase
5
Version
6 Flow Empty = standard
HF = high flow rate
7
Float
Empty = with float
SG = without float
1
2 6
DOMO 6/B GT 10 TVX
3 5 7
4
DOMO_M0007_A_sc

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3.5 Names of the main components
Position
number
Description
Position
number
Description
1
Supply cord
5
Cable stop
2
Handle
6
Float
3
Discharge port
7
Tube float (DOMO GT)
4
Suction port
3.6 Intended use
Pumping of wastewater, including with a limited quantity of suspended filaments or solids.
Observe the operating limits in Technical Information on page 25.
Pumped liquids
•Clean water
•Wastewater and sewage water
•With suspended solids
•With suspended filaments
•Chemically and mechanically non aggressive
•Non flammable and/or explosive.
3.7 Improper use
WARNING:
The unit was designed and built for the use described in the Intended Use section. Any other
uses are prohibited, as they could compromise the safety of the user and the efficiency of the
unit itself.
DANGER:
It is prohibited to use this
unit to pump flammable and/or explosive liquids.

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DANGER: Potentially explosive atmosphere hazard
It is prohibited to start the unit in environments with potentially explosive atmospheres or with
combustible dusts
.
DANGER: Electrical hazard
Do
not use the unit in swimming pools or similar places when people are inside.
Examples of improper use
•Pumping liquids not compatible with the construction materials of the unit
•Pumping liquids with temperatures higher than what shown in Technical Information on
page 25
•Pumping hazardous, toxic, explosive, flammable or corrosive liquids
•Pumping sea water.

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DOMO, DOMO GRI - Installation, Operation and Maintenance Manual 13
4Installation
4.1 Precautions
Before starting, make sure that the safety instructions shown in Introduction and Safety on
page 4 have been fully read and understood.
DANGER:
All the hydraulic and electrical connections must be completed by a technician possessing the
technical
-professional requirements outlined in the current regulations.
DANGER: Potentially explosive atmosphere hazard
It is prohibited to start the unit in environments with potentially explosive atmospheres or with
combustible dusts
.
WARNING:
Always wear personal protective equipment.
WARNING:
Always use
suitable working tools.
WARNING:
When selecting the place of installation and connecting the unit to the hydraulic and electric
power supplies, strictly comply with current regulations.
4.2 Mechanical installation
The unit may be used:
•with manual or automatic operation, for example connected to a level switch
•as mobile unit or in permanent installations, for example inside an existing tank or in a
prefabricated lifting station.
Dedicated installation kits and lifting stations are available: Contact Xylem or the Authorised
Distributor for further information.
4.2.1 Installation area
1. Follow the provisions in Operating environment on page 25.
2. Remove any solid sediments found.
3. If the unit is installed in a tank or a lifting station, check that their sizes are appropriate for
the unit and that the perimeter is even and without obstacles.
4. If the unit is fitted with a float, check that the tank or lifting station sizes do not impair the
free movement of the float.

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14 DOMO, DOMO GRI - Installation, Operation and Maintenance Manual
4.2.2 Permitted positions
4.2.3 Permanent installation on support base
1. Check that the bottom is solid, and if possible even.
2. Connect a 90° rigid or flexible elbow pipe to the discharge port (see Hydraulic connection
on page 17).
3. Submerge the unit in the liquid.
4.2.4 Permanent installation with quick coupling
The unit can be installed inside a tank or lifting station using the quick coupling descent kit
(optional).
DANGER: Electrical hazard
Holding the unit by the
supply cord or the float switch is strictly forbidden.
NOTICE:
In the operating position, the unit, the piping, the electric
supply cord and the support chain
must never be in contact with the walls of the tank.
See the figure below.
1. Secure the guide pipe supports and the foot:
a) In case of tanks with loose or irregular bottom, install a solid foot base, as horizontal
and flat as possible.
b) Temporarily secure the pipe support to the edge of the tank using 2 dowels.
c) Place the foot at on the bottom, ascertaining the correct position with a plumb line,
using the tube support as reference.
d) Secure the foot to the bottom with 4 dowels.
e) Attach the discharge pipe to the foot (see Hydraulic connection on page 17).
2. Complete the installation of the kit:
a) Insert the guide tubes in the foot.
b) Cut the top ends of the pipes so that they coincide with the support.
c) Unscrew the pipe support.
d) Insert the sliding bracket in the pipes.
e) Insert the support at the top end of the pipes.
f) Permanently secure the support to the tank wall.

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DOMO, DOMO GRI - Installation, Operation and Maintenance Manual 15
3. DOMO GRI series only:
a) Remove one of the three support feet by unscrewing the M8x25 screw.
b) Re-tighten the screw.
Tightening torque: 13 Nm (115 lbf·in).
c) Repeat a) and b) for the other two feet.
4. Install the unit:
a) Screw the discharge port to the sliding bracket, placing the seal included in the kit
between the two.
b) Attach the chain to the handle.
c) Slide the sliding bracket through the guide pipes and lower the unit in the tank,
supporting it with the chain until the end.
d) Attach the end of the chain to the edge of the tank.
e) Secure the supply cord to the edge of the tank with a stop.
6
4
1
9
8
5
7
2x
4x
2x
2
3
DOMO_M0002_A_de

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16 DOMO, DOMO GRI - Installation, Operation and Maintenance Manual
Position
number
Description
Position
number
Description
1
Unit
6
Corrosion resistant metal guide pipes, diameter
¾”, length exceeding the tank depth
2
Guide pipe support
7
Dowels
3
Foot
8
Dowels
4
Sliding bracket
9
Corrosion resistant metal chain, capacity 500 kg
(1100 lb), length exceeding the tank depth
5
O-ring
4.3 Start and stop levels
The float switch controls the start and stop of the unit (intermittent operation).
NOTICE:
The unit may only operate for a few minutes while only partially submerged in the liquid, for
example during emptying operations.
DOMO, DOMO VX, DOMO GRI
To adjust the level difference between start and stop, change the length of the float cable
using the cable stop found on the handle:
•Short cable: decrease the distance between minimum and maximum level, more frequent
starts and stops.
•Long cable: increase the distance between minimum and maximum level, less frequent
starts and stops.
The figure shows the minimum (H1) and the maximum (H2) permitted levels for operation
depending on the model.
Series
Model
H1, mm (in)
H2, mm (in)
DOMO
7, 7VX
155 (6.1)
375 (14.8)
10, 10VX, 15, 15VX
155 (6.1)
420 (16.5)
DOMO GRI
11/A
129 (5)
394 (15.5)
11HF
131 (5.2)
396 (15.6)
15
149 (5.9)
414 (16.3)

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DOMO, DOMO GRI - Installation, Operation and Maintenance Manual 17
DOMO GT
The level difference between start and stop cannot be adjusted.
The figure shows the minimum permitted level for operation (H1) depending on the model.
Model
H1, mm (in)
7 GT, 7VX GT
225 (8.9)
10 GT, 10VX GT, 15 GT, 15VX GT
255 (10)
4.4 Hydraulic connection
DANGER:
All the
hydraulic and electrical connections must be completed by a technician possessing the
technical
-professional requirements outlined in the current regulations.
WARNING:
Piping must be sized to ensure safety at the maximum operating pressure.
WARNING:
Install appropriate seals between the unit couplings and the pipings.
4.4.1 Guidelines for the hydraulic system
1. Attach the piping, rigid or flexible, to the discharge port.
2. Support the piping independently to prevent it from weighing on the unit.
3. Install a check valve on the piping, at least 1 m (3.3 ft) from the discharge port.
4. Install a gate valve downstream the check valve.
5. For units without float to be used for automatic operation, install a device stopping the unit
when the liquid level reaches the minimum permitted limit, see Start and stop levels on
page 16.
The figure shows a typical installation.

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18 DOMO, DOMO GRI - Installation, Operation and Maintenance Manual
Position
number
Description
Position
number
Description
1
Gate valve
6
Electric supply cord
2
Discharge pipe
7
Chain
3
Check valve
8
Tank
4
Descent kit
9
Float
5
Unit
4.5 Electrical connection
DANGER:
All the hydraulic and electrical connections must be completed by a technician possessing the
technical
-professional requirements outlined in the current regulations.
DANGER: Electrical hazard
Before starting work, check that the unit is unplugged and that the pump unit, the control
panel and the auxiliary control circuit cannot restart, even unintentionally.

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DOMO, DOMO GRI - Installation, Operation and Maintenance Manual 19
4.5.1 Ground
DANGER: Electrical hazard
Always connect the
external protection conductor (ground) to the ground terminal before
attempting to make any other electrical connections.
DANGER: Electrical hazard
Connect the pump
unit and any electric accessories to a socket with protection conductor
(ground).
DANGER: Electrical hazard
Check that the external protection conductor (ground) is longer than the phase conductors; In
case of accidental disconnection of the unit from
the phase conductors, the protection
conductor must be the last one to detach itself from the terminal.
DANGER: Electrical hazard
Install suitable systems for protection against indirect contact, in order to prevent lethal electric
shocks.
4.5.2 Guidelines for electrical connection
1. Check that:
•The mains voltage and frequency match the specifications on the data plate
•The supply cord is protected from high temperatures, vibrations, collisions and
abrasions.
2. Check that the power supply line is provided with:
•a short circuit protection device of appropriate size
•a mains disconnection device with contact opening distance ensuring complete
disconnection for overvoltage III category conditions
•an RCCB earth leakage switch with tripping current < 30 mA.
4.5.3 Guidelines for the control electric panel
NOTICE:
The electric panel must match the ratings on the unit data plate. Improper combinations could
damage the motor.
•Install appropriate devices for protecting the motor from overloads and short circuits:
Motor
Safety features
Single-phase
• Automatic reset thermal-ampere protection, in-built (motor protector)
• From short circuit, by the installer: aM fuses (motor start-up), or thermal magnetic switch
with C curve and Icn ≥ 4.5 kA, or other similar device.
Three-phase
•
Thermal, by the installer: trip class 10 A overload thermal relay + aM fuses (motor start-
up), or start class 10 A motor protection thermal magnetic switch
• From short circuit, by the installer: aM fuses (motor start-up), or thermal magnetic switch
with C curve and Icn ≥ 4.5 kA, or other similar device.
•If required, install phase failure sensitive thermal relays.
Motor protection from overtemperature
•Single-phase: the unit is equipped with built-in capacitor and thermal overload protection,
and stops automatically in case of overtemperature. After 2-4 minutes the thermal overload
protection gives the restart consent.
•Three-phase: Install an appropriate motor protector with D curve in the control panel, in
accordance with the current shown in the data plate.

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20 DOMO, DOMO GRI - Installation, Operation and Maintenance Manual
5Use and operation
5.1 Precautions
DANGER: Electrical hazard
Do not use the unit in swimming pools or similar places when people are inside.
WARNING: Electrical hazard
Check that the unit is properly connected to the mains power supply.
DANGER: Injuries hazard
Do not insert your hands at the
bottom of the unit when in operation: risk of personal injury
caused by moving components.
WARNING: Injuries hazard
The unit, equipped with a single
-phase motor with automatic reset thermal overload
protection, could restart inadvertently after it
has cooled down: risk of physical injury.
WARNING:
It is prohibited to put combustible materials near the unit.
WARNING:
Do not hold the unit by the handle during operation.
WARNING:
Make sure that the drained liquid cannot cause damage or
injuries.
NOTICE:
In case of outdoor use, the length of the supply cord must exceed 10 m (33 ft).
NOTICE:
Dry run of the unit is forbidden.
NOTICE:
Make sure that the suction port is completely submerged in the liquid before start-up.
NOTICE:
The unit may only operate for a few minutes while only partially submerged in the liquid, for
example during emptying operations.
See Mechanical characteristics on page 26.