GENERAL D'ASPIRAZIONE 126M Service manual

Installation, Use and
Maintenance Manual

Use and Maintenance Manual
MONOBLOCK Vacuum Unit
>>> CONTENTS
Sommario
Installation, Use and Maintenance Manual.......................................................................................................................1
1. General safety information....................................................................................................................................................3
2. MONOBLOCK vacuum unit technical features...............................................................................................................9
3. Movement and unpacking................................................................................................................................................... 16
4. Installation of the MONOBLOCK vacuum unit ................................................................................................................ 17
5. Use and operation of the MONOBLOCK vacuum unit.............................................................................................. 22
6. Maintenance.............................................................................................................................................................................. 29
7. Spare parts ................................................................................................................................................................................33
8. Problems, causes and remedies........................................................................................................................................ 34
9. End of service and decommissioning............................................................................................................................. 37
10. Product guarantee............................................................................................................................................................... 38
11. CE Declaration of Conformity ......................................................................................................................................... 40

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MONOBLOCK Vacuum Unit
>>> General safety information
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1. General safety information
Read this manual carefully before starting operations of movement, unpacking, installation,
use, maintenance and decommissioning of the MONOBLOCK vacuum unit.
A copy of this manual is available on the website:
www.generaldaspirazione.com
1.1 Purpose of this manual
This installation, use and maintenance manual is an integral and essential part of the MONOBLOCK vacuum
unit.
Its purpose is to provide all necessary information to allow the installer to install the system in full
compliance with the manufacturer’s specifications, the user to operate the system in the safest and most
independent way, and maintenance technicians carrying out programmed maintenance operations to
ensure the correct operation of machinery and the system as a whole.
The manufacturer declines all liability for damage deriving from failure to observe the instructions given in
this manual. In case of doubts on the correct interpretation of instructions, contact the manufacturer to
receive the necessary explanations.
1.2 Composition of the manual and consultation details
This installation, use and maintenance manual is composed of chapters divided into sections, identified by a
progressive numbering system at the start of each different topic. Italian is the language of the first release.
The table of contents lists the chapters and sections, allowing the desired topic to be easily found.
The following symbols are used in this manual to indicate and highlight particularly important parts of the
manual that must not be ignored:
DANGER - ATTENTION
Denotes situations of extreme danger that if ignored could create serious risks for the
health and safety of persons.
CAUTION
Denotes that suitable conduct must be followed to avoid accidents and/or causing
economic damage.
INFORMATION
Denotes technical information of particular importance that must not be ignored.
The descriptions and illustrations provided in this manual are not binding. General D’Aspirazione reserves
the right to make any modifications it deems necessary at any moment, without any obligation for prior
notification.
The total or partial reproduction of this document without the consent of the manufacturer is prohibited.

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1.3 General safety precautions
The purpose of this information is to make persons interacting with the system aware of all possible
conditions of danger, and thereby to avoid injuries either to themselves or to others.
Design for safety
During the design and construction phase, the manufacturer dedicated particular attention to aspects that
may cause risks for the safety or health of persons using the system.
In addition to complying with applicable laws, the manufacturer followed all rules for Good Manufacturing
Practices.
Nevertheless, some parts of the system could cause risks that are not immediately evident. It is therefore
advisable to take particular care during use of the system and during routine maintenance operations.
Safety during use
Before starting to use the system in any way whatsoever, the instructions given in this manual supplied
must be read carefully and completely, together with the indications provided directly on the system with
safety warning symbols.
Do not tamper with, bypass or remove the safety devices installed on the system.
Failure to observe these instructions may cause risks for the safety or health of persons.
Safety during maintenance
Personnel carrying out any kind of routine maintenance on the system during its entire lifespan must
possess specific technical skills, special capacities and acquired experience recognized in the sector in
question.
The absence of these requisites may cause risks for the safety or health of persons.
During normal use or during any kind of operations on the system, the safety distances around it must be
maintained in order to avoid causing risks for the safety or health of persons.
For some operations the help of one or more assistants may be necessary.

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1.4 Safety and hazard signals
The following symbols are used in this manual and on the system to draw attention to procedures that
persons interacting with the system must scrupulously respect to protect their own safety and to prevent
damage to the system.
ELECTRICITY LIFE HAZARD
HIGH TEMPERATURE HAZARD
CRUSHING HAZARD
PROHIBITED TO EXTINGUISH FIRES WITH WATER
IT IS PROHIBITTED TO REMOVE THE PROTECTION AND SECURITY DEVICES
DON’T USE THE CENTRAL WITHOUT THE PROTECTIONS
PROHIBITED FOR PERSONS NOT SUITABLY TRAINED TO USE THE SYSTEM
COMPULSORY TO WEAR PROTECTIVE MASK AGAINST INHALATION OF DUST AND
HARMFUL SUBSTANCES
COMPULSORY TO WEAR PROTECTIVE GLOVES AGAINST CONTACT WITH DUST AND
HARMFUL SUBSTANCES
COMPULSORY TO WEAR SAFETY FOOTWEAR
COMPULSORY TO WEAR PROTECTIVE GLOVES WHILE MOVING GOODS
1.5 Identification of the manufacturer
This MONOBLOCK vacuum unit was designed and produced by General D’Aspirazione, founded in 1974 and
Italy's leader in the manufacture of centralized vacuum cleaner systems.
For all requests regarding installation, use, maintenance or the supply of spare parts, customers are invited
to contact only the manufacturer, whose identification data can be found on the identification plates (Figure
1).

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Figure 1
The identification plate is located on the right-hand side of the vacuum unit.
For all requests for technical assistance, in addition to details of the problem encountered, customers are
asked to inform the manufacturer of all system information given on the identification plate, as follows:
• system model
• serial number
MANUFACTURER information
9/11 Via del Lavoro
47030 –San Mauro Pascoli (FC) Italy
[e-mail]
www.generaldaspirazione.com
For all requests regarding installation, use, maintenance or the supply of spare parts,
customers are invited to contact the manufacturer, whose identification data can be found on
the identification plates.

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1.6 Technical documentation supplied with the MONOBLOCK vacuum unit
1. Use and Maintenance Manual for MONOBLOCK vacuum units
2. Guarantee certificate
3. Declaration of CE Conformity
4. Technical manual inverter
5. Technical manual compressor (where present)
1.7 Serial equipment included in the Monoblock Central
The serial equipment includes:
-2 rubber couplings with ties for the connection
of the central to the system
-1 dust bag
-1 muffler complete with fittings
1.8 Correct and improper uses
ATTENTION: Uses other than those indicated are not permitted.
No modifications or adaptations of the vacuum unit are permitted.
Any use whatsoever other than the use for which the product has been designed represents
improper use that may damage the vacuum unit and constitute a serious hazard for the user.
General D’Aspirazione MONOBLOCK vacuum units are designed and constructed solely to vacuum dust of a
domestic type into a central unit inside civil buildings.
The Monoblock system must be used vacuum only dust and objects of small dimensions.
For specific needs contact the General D’Aspirazione technical office. The manufacturer declines all and any
liability for damage to the system or to other things and/or injuries to persons caused by improper use of
the system.

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Recommendations for use
In case of fire, do not attempt to extinguish it with water. Failure to observe this instruction
may expose the operator to the risk of electric shock.
This system is designed to be installed by adequately trained and instructed personnel.
This unit can be used by children aged from 8 years and up and persons with reduced physical
capacity, sensory or mental or lack of experience and knowledge if they received supervision
or instruction concerning use of the appliance safely and understood the risks involved.
Children should not play with the appliance.The cleaning and maintenance performed by the
user should not be made by children without supervision.
The vacuum centrals are destined to residential and tertiary use, like Hotels, cinemas, theatres, congress or
playing halls, offices, industries etc. For use other than the specified please contact the technical office.
Their use during building work may cause serious deterioration that is not covered by the guarantee.
●Do not vacuum plaster, cement or rubble. Such operations can be performed using the liquid cleaner
accessory (see brochure on available accessories).
●Do not use the machine for inappropriate purposes. Do not vacuum glowing ash, cigarette ends still
lit, inflammable products or materials that could cause flames in the dust collection container, materials with
a high risk of explosion or materials that individually are inert but that when mixed together may cause
dangerous chemical reactions.
●It is prohibited to use vacuum units for unintended purposes in industrial facilities in the presence of
values of temperatures, pressure and humidity in excess of those of normal workplaces.
●Do not vacuum liquids, ashes in fireplaces, large quantities of flour, printer toner, building site dust,
fine powder, cement or plaster.
●Always disconnect the power supply at the electrical panel:
oduring installation;
oif maintenance or repair operations are necessary;
oif the system is not to be used for a long period.
●Do not under any circumstances whatsoever work on the unit while it is operating.
●Wear protective gloves and a facemask for all maintenance work (emptying of dust container,
cleaning or replacement of filter).
●Use only original spare parts.
●Do not use the vacuum unit without the filter.
●After all maintenance operations ensure that the filter has been replaced and correctly tightened.
●Do not obstruct air inlets or outlets.
●Do not allow parts of the body to come into contact with accessories of the vacuum unit, and never
direct the suction mouthpiece toward persons or animals.

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IMPORTANT
Ask the installer carrying out the final system test and regulation to certify that the system
has been correctly installed.
2. MONOBLOCK vacuum unit technical features
2.1 Description of the MONOBLOCK vacuum unit
MONOBLOCK vacuum units are designed and manufactured for the suction of dust both in residential
buildings and in service sector premises. MONOBLOCK vacuum units use a suction turbine with an electric
motor that generates suction pressure when switched on. The rotation speed of the suction turbine is
controlled by an inverter. Depending on the suction pressure setting, the inverter controls the rotation
frequency according to the suction pressure detected by a pressure transducer.The air sucked in is
channelled into the central section, where dust particles fall into a collection container. Finer particles are
drawn towards the upper part of the separator, where they are trapped by the filter cartridge. The filtered
air is then expelled towards the exterior through the outlet ducts of the turbine.
2.2 Standard models and approximate dimensions for monoblock from 1 to 2 operators
Characteristics
126M
126MA
126T
126TA
238T
238TA
Number of
operators
1
1
1
1
2
2
Self-cleaning
function
NO
YES
NO
YES
NO
YES
Technical data –
Dimensions
126M
126MA
126T
126TA
238T
238TA
Container capacity
litres
90
90
90
90
90
90
Diameter
cm
Ø46
Ø46
Ø46
Ø46
Ø46
Ø46
Filter surface
m2
2,0
2,0
2,0
2,0
2,0
2,0
Inlet/outlet diam.
mm
Ø63
Ø63
Ø63
Ø63
Ø63
Ø63
Height
cm
179
179
179
179
179
179
Width
cm
65
65
65
65
65
65
Depth
cm
71
71
71
71
71
71
Weight
kg
104
112
104
112
104
112

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2.3 Standard models and approximate dimensions for Monoblock from 3 to 4 operators
Characteristics
350T
350TA
469T
469TA
Number of
operators
3
3
4
4
Self-cleaning
function
NO
YES
NO
YES
Technical data –Dimensions
350T
350TA
469T
469TA
Container capacity
Litres
120
120
120
120
Diameter
cm
Ø55
Ø55
Ø55
Ø55
Filter surface
m2
3,6
3,6
3,6
3,6
Inlet/outlet diam.
mm
Ø100
Ø100
Ø100
Ø100
Height
cm
190
190
190
190
Width
cm
79
79
79
79
Depth
cm
99
99
99
99
Weight
kg
143
159
150
166
Figure 2

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2.4 Technical data and characteristics for Monoblock from 1 to 2 operators
Technical performance data
126M
126MA
126T
126TA
238T
238TA
Maximum airflow
m3
350
350
350
350
460
460
Airflow operating at
160 mbar
m3/h
180
180
180
180
340
340
Operating suction
pressure
mbar
160
160
160
160
160
160
Noise emission
dB A
59
59
59
59
62,5
62,5
Electrical technical data
126M
126MA
126T
126TA
238T
238TA
Motor power
kW
2,6
2,6
2,6
2,6
3,8
3,8
Power supply
voltage
V
230
230
400
400
400
400
Power supply
frequency
Hz
50
50
50
50
50
50
Power absorbed
A
7,2
7,2
7,2
7,2
9,7
9,7
Inverter
YES
YES
YES
YES
YES
YES
Maximum frequency
Hz
70
70
70
70
86
86
Protection rating
IP20
IP20
IP20
IP20
IP20
IP20
Electrical insulation

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2.5 Technical data and characteristics for Monoblock from 3 to 4 operators
Technical performance data
350T
350TA
469T
469TA
Maximum airflow
m3/h
530
530
680
680
Airflow operating at
160 mbar
m3/h
400
400
530
530
Operating suction
pressure
mbar
160
160
160
160
Noise emission
(Note 1)
dB A
66
66
67
67
Electrical technical data
350T
350TA
469T
469TA
Motor power
kW
5,0
5,0
6,9
6,9
Power supply
voltage
V
400
400
400
400
Power supply
frequency
Hz
50/60
50/60
50/60
50/60
Power absorbed
A
12,0
12,0
15,6
15,6
Inverter
YES
YES
YES
YES
Maximum frequency
Hz
86
86
86
86
Protection rating
IP20
IP20
IP20
IP20
Electrical insulation
Electrical protection class –Class 1 –Device with fundamental electrical insulation.
Must be connected to the grounding circuit of the main electrical system.
IP protection rating –IP20 (Devices protected against solid bodies greater than 12 mm in
diameter and not protected against the penetration of water).
A 0.3 A Class B safety cut-out breaker must be installed before the electrical panel.
Short circuit current Icc = 6 Ka
Note 1: Noise level referred to central with muffler and outdoor exhaust.

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Diagram of the MONOBLOCK vacuum unit and description of components.
The illustration in figure 3 shows the Monoblock central,where the main components are listed.
Figure 3

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2.6 Frame
The frame is the support structure of the MONOBLOCK vacuum unit. Its adjustable support feet allow the
vacuum unit to be levelled even on irregular surfaces.
The compressor for the self-cleaning of the filter (only for models with self-cleaning) is housed on the
frame.
2.7 Dust container
The dust container has a collection capacity of 90 litres or 120 litres. The container has a dust collection bag
for the disposal of dust. The level of dust in the dust container must be checked approximately every two
months, depending on the conditions of use.
The handle is used to open the dust container, also making the cartridge filter accessible.
The dust container also has a low-pressure pipe that guarantees the retention of the dust collection bag.
2.8 Central section
The central section contains the main control components of the MONOBLOCK vacuum unit, as follows:
●Electrical control panel
oInverter
oMain switch
oCheck button to reset the ordinary maintenance alarms
oManual Self-Cleaning button (only for models with self-cleaning)
oRelay module (optional)
●Cartridge filter
●Pressure transducer for regulation of the operating suction pressure
●Compressor for filter self-cleaning function (CM126MA, CM126TA and CM238TA)
●Compressed air tank for filter self-cleaning function (only for models with self-cleaning)
●Solenoid valve for filter self-cleaning function (only for models with self-cleaning)
2.9 Head Stage
The head stage contains:
-Vacuum turbine
-Thermo sensor
-User interface panel

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2.10 Safety and hazard stickers
Figure 4 shows the points where stickers with recommendations, hazard warnings and prohibitions are
applied, helping to make the MONOBLOCK vacuum unit safe to use.
Figure 4

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3. Movement and unpacking
The MONOBLOCK vacuum unit is shipped fixed to a europallet inside a cardboard box to protect it during
transport and delivery.
It is advisable not to remove the packaging until the moment of installation, to avoid possible damage.
2 OVIM
ATTENTION
Suitable lifting equipment must be used when moving the vacuum unit, and particular
care must be taken to correctly balance loads.
CAUTION
Never turn a vacuum unit that is still packed upside down.
Do not use box cutters to remove packaging materials.
The manufacturer declines all and any liability for damage caused by the incorrect
opening of packaging materials.
ATTENTION
During movement operations use appropriate items of personal protection equipment.
Failure to use appropriate items of personal protection equipment during movement
and unpacking may expose the operator to the risk of crushing of the feet due to loss of
stability.
Failure to wear safety gloves prevents a safe grip during movement operations with the
risk of accidental falls.
On delivery it is necessary to immediately check the materials supplied for correctness
and lack of damage with the transporter to avoid claims for damage not attributable to
shipping.
If there is visible damage on the product the consignment has to be refused.
If the delivery is accepted there cannot be demanded any
refunds.
On delivery it is necessary to immediately check the materials supplied for correctness and lack of damage
with the transporter to avoid claims for damage not attributable to shipping.
ATTENTION
The support surface must not have a slope of more than 8%, to avoid the risk of overturning
due to loss of stability.
IMPORTANT
Packaging materials must be kept for the entire period covered by the guarantee.

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4. Installation of the MONOBLOCK vacuum unit
This system is designed to be installed by adequately trained and instructed personnel.
The entire system must be installed by qualified personnel in full compliance with standards
of workmanship and with applicable standards and regulations.
During installation operations use appropriate items of personal protection equipment.
Failure to use appropriate items of personal protection equipment during movement and
unpacking may expose the operator to the risk of crushing of the feet due to loss of
stability.
Failure to wear safety gloves prevents a safe grip during movement operations with the risk
of accidental falls.
4.1 Choice of installation position for the vacuum unit
The choice of installation position must be based on these criteria:
●The Monoblock vacuum unit must be installed indoors in well-ventilated rooms, preferably in a
service room on the lowest floor of the building, like a garage or technical utilities room, or in external
locations, provided that the vacuum unit is always protected against bad weather.
●The selected position must have a clear and well-lit space around the main vacuum unit, so as to
facilitate maintenance and repair operations.
●The main vacuum unit must not be installed in rooms where:
- there is a source of heat in the immediate vicinity
- ambient temperature can reach values lower than 5°C and above 35°C
- humidity is very high or flooding may occur
- flammable or explosive products are present
- in environment presenting ionizing radiations
Its location must be able to realize the pipe for the expulsion of the air.
It is the duty of the user to make a valuation of the noise pollution to the activity in the area of installation
of the vacuum central.

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4.2 Installation of the MONOBLOCK vacuum unit –1 and 2 operators
The MONOBLOCK vacuum unit has been designed for easy and convenient installation.
The vacuum unit must be positioned respecting the clearance distances indicated in Figure 5. The central
can be placed close to a wall on its right side, While on its left side there is a minimum distance of 30 cm
(advisable 50 cm) required, on the back the encumbrance e is shown in the figure. In these conditions of
installation the vacuum inlet is at approximately 70 cm, while the exhaust is at 171,5 cm from the ground
(see figure 5)
The MONOBLOCK vacuum unit must now be connected to the suction pipes of the system and to the air
expulsion pipe, using the rubber hoses with metallic fixing clamps provided.
IMPORTANT
●Maximum distance from the Monoblock vacuum unit to the most distant suction
point 50 metres.
●For the air expulsion pipe, the first 7 metres must consist in Ø63 mm pipes. After the
first seven metres, pipe diameter must be increased
●Important: connect the muffler in metal to the exhaust pipe to reduce the noise of
the air in exhaust
Figure 5

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4.3 Installation of the MONOBLOCK vacuum unit –3 and 4 operators
The MONOBLOCK vacuum unit has been designed for easy and convenient installation.
The vacuum unit must be positioned respecting the clearance distances indicated in Figure 5. There must
be a space of 5 cm on each side of the vacuum unit, and a space of 25 cm to the rear.
In these installation conditions, the suction inlet is 78 cm above floor level and 25 cm from the wall. The air
expulsion outlet is 190 cm above the floor and also 25 cm from the rear wall. (see figure 6)
The MONOBLOCK vacuum unit must now be connected to the suction pipes of the system and to the air
expulsion pipe, using the rubber hoses with metallic fixing clamps provided.
IMPORTANT
●Maximum distance from the Monoblock vacuum unit to the most distant suction
point 80 metres.
●For the air expulsion pipe, the first seven metres must consist in Ø100 mm pipes,
after increase the diameter.
●Important: Connect the metal muffler to the Exhaust to reduce the noise of the
exhaust air.
Figure 6

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4.4 Air expulsion
It is important to foresee the installation of the muffler to the exhaust pipe to reduce the noise of the
exhaust air.
All the air expulsion piping must be made with specific galvanized steel piping. In the case of lengths greater
than about 6/7 m, consult the technical office for correct sizing of the same.
4.5 Electrical connection
Complete installation without connecting the vacuum unit to the main electrical system.
Once the pneumatic connection has been completed, the general electrical power supply of the machine
must be connected.
According to the type of central there needs to be disposed an adequate electric socket:
●Socket Schuko monophase of 16A, 230 volt in proximity of the central for models 126MA and 126M
●Pentapolar socket triphase of 16A –400 volt for models 126T, 126TA, 238T, 238TA
●Pentapolar socket triphase of 32A - 400V for models 350T, 350TA, 469T e 469TA
To complete the installation it is necessary to connect the cable of consent sockets to the low tension line
of the suction inlets.
In the case of a wireless system the cable for the inlet consensus on the central has to be connected to the
2–poles cable of the external wireless receiver / Master.
Electrical protection class –Class 1 –Device with fundamental electrical insulation.
Must be connected to the grounding circuit of the main electrical system.
It is the user's responsibility to check whether to provide protection against
overcurrents and indirect contacts upstream of the power supply line of the central
vacuum unit. All the monobloc central units have a magnetothermic switch with a
breaking capacity of 6kA.
A class B 0.3 A safety cut-out breaker must be installed before the electrical panel.