Delfin ESD.MTL-0468 Installation instructions

Equipment classification: Industrial vacuum cleaners
Operator’s and maintenance manual
Original and official manual
Rev.10/02/2021
Read this manual carefully before using the vacuum cleaner
ESD.MTL-0468

Introduction
The manual must be kept with the vacuum cleaner in case of resale!
© Copyright DELFIN S.r.l.
2021
This manual provides all the information needed to use and service your vacuum cleaner. Good
operation and durability depend on proper maintenance and careful use.
Before leaving the factory, this particular model has undergone stringent tests to ensure utmost
reliability. Always check however to make sure the vacuum cleaner has not been damaged during
transport in such a way as to affect operation and safety.
This manual should be considered an integral part of the vacuum cleaner and must be kept
together with the unit until this is scrapped. In case of loss of or damage to the manual, ask DELFIN
for a new copy.
The technical details contained in this manual are the property of DELFIN and should be deemed
of a confidential nature.
Even partial reproduction of the graphic project, the text and the illustrations is legally forbidden.
Some details shown in the illustrations in this manual may be different from those of your vacuum
cleaner. Some component parts may have been removed for greater clarity.
For easier reference, this manual is split into sections, identifiable by specific graphic symbols.
The subjects dealt with in this manual are those expressly required by " Machine Directive
2006/42/CE "and the technical details shown are those provided by the manufacturer at the time
of compilation. For ATEX Vacuums, the reference directive is the 2014/34/EU.
This manual must be kept in a place accessible to all the personnel charged with operating and
servicing the vacuum cleaner.
In case of any doubts, always immediately phone the After-Sales Service .
The competent Law Court for all disputes is that of TURIN (Italy).
TECHNICAL SERVICE
Our engineers are available to help you in case any problem occurs.
Please call +39 011. 800550

Contents
Information section
1.1 Identification of main parts .......................................................................................................................... - 1 -
1.2 Accessories provided......................................................................................................................................- 2 -
1.3 Identification details of manufacturer .....................................................................................................- 3 -
1.4 Marking plate ......................................................................................................................................................- 3 -
1.5 Intended uses....................................................................................................................................................- 4 -
1.6 Allowed environmental conditions............................................................................................................- 4 -
1.7 Storage..................................................................................................................................................................- 4 -
1.8 Scrapping.............................................................................................................................................................- 4 -
1.9 Technical details................................................................................................................................................- 5 -
1.10 Handling................................................................................................................................................................ - 7 -
1.11 Warranty................................................................................................................................................................- 8 -
Safety section
2.1 Safety details......................................................................................................................................................- 9 -
2.2 Safety warnings...............................................................................................................................................- 10 -
2.3 Safety plates and symbols..........................................................................................................................- 14 -
2.4 Outstanding risks............................................................................................................................................ - 15 -
2.5Applied directives ........................................................................................................................................... - 15 -
Operation section
3.1 Installation .........................................................................................................................................................- 16 -
3.2 Description of controls .................................................................................................................................- 18 -
3.3 Work cycle.......................................................................................................................................................... - 19 -
3.4 How to place (or remove) the waste bag ………………………………………………………………… - 21 -
3.5 Filter cleaning system DUSTOP............................................................................................................ - 22 -
Maintenance section
4.1 Informative notes........................................................................................................................................... - 24 -
4.2 General safety warnings............................................................................................................................. - 24 -
4.3 Maintenance operations ............................................................................................................................. - 25 -
4.4 Replacing the filters.......................................................................................................................................- 27 -
4.5 Troubleshooting ............................................................................................................................................. - 29 -
Spare parts section
5.1 Recommended spare parts ........................................................................................................................ - 31 -

Information Section
- 1 - EN
1.1 Identification of main parts
1)Motor head
2)Push handle
3)Dustop filter cleaning system
4)Release fastener
5)Filtering chamber
6)Suction pipe coupling point
7)Dust bag
8)Castors
9)Fixed wheels
1
6
5
7
4
3
8
9
2

Information Section
- 2 - EN
1.2 Accessories provided
FI.0013.0000
H D330X98H ABSOLUTE FILTER
(only spare part)
Remark: these filters must be checked every six months. In case they are worn it will be
necessary to replace them with new ones, to be requested as spare parts to DELFIN S.r.l.
DELFIN S.r.l. will accept no responsibility in case of use of NON-ORIGINAL filters.
FI.0232.0000
D. 340 H350 "M" CAT.FILTER CARTRIDGE FILTER FOR
MTL 202 DS PTFE
(only spare part)

Information Section
- 3 - EN
1.3 Identification details of manufacturer
Delfin S.r.l.
Strada della Merla, 49/a
10036 Settimo Torinese (TO) Italy
Tel. [phone]
Fax [phone]
www.delfinvacuums.it
[e-mail]
1.4 Marking plate
In compliance with the Machine Directive 2006/42/CE on vacuum cleaners, the machine is fitted
with CE plates.
When contacting the manufacturer or dealer, always quote the details shown on the vacuum
cleaner plate.

Information Section
- 4 - EN
1.5 Intended uses
These specific vacuum cleaner models have been designed, built and protected for vacuuming
dusts and solid materials only, using special filters.
For ATEX vacuums, antistatic filters are used according to ATEX Directive 2014/34/EU.
Warning!
Always use specific filters for the type of dust or materials to be vacuumed.
Any other use is considered IMPROPER .
The vacuum cleaner is in any case intended for professional industrial use.
1.6 Allowed environmental conditions
To ensure the correct operation of the vacuum cleaner, this must be positioned protected against
atmospheric agents (rain, hail, snow, fog, dusts in suspension, etc.) with an environmental running
temperature between 5°C and 45°C and relative humidity not above 70%.
The work environment must be clean, well-enough lit and devoid of explosive atmosphere.
1.7 Storage
Remove the filter and clean it, empty the container (in case of Longopac vacuums: replace the
bag) and store the vacuum cleaner in a place protected against atmospheric agents with a
temperature between 0°C and 40°C. Cover with a nylon sheet to prevent accumulation of dust.
1.8 Scrapping
In case of scrapping, all the component parts of the vacuum cleaner will have to be disposed of
through adequate disposal channels in accordance with applicable legislation.
Before scrapping, all plastic and rubber parts will have to be separated from the electrical
material. Parts made of plastic, aluminium and steel only may be recycled if collected by special
centres.

Information Section
- 5 - EN
1.9 Technical details
Model
ESD.MTL-0468
Power
kW
1,15
Voltage
Volts
230/50-60Hz
Max. vacuums rate
mm H2O
2500
Max. air flow rate
m
3/h
180
Noise level (*)
dB (A)
74
Filter type
Polyester cat. “M”
Filter surface
cm
2
30.000
Capacity
lt
Longopac
Suction inlet
Ø
50
Dimensions
cm.
54 x 68 x 136

Information Section
- 6 - EN
(*) Noise level
Noise level readings were taken in accordance with the provisions of Machine Directive
2006/42/CE standards.
Sound tests performed on this specific vacuum cleaner model have been taken from a distance of
1 meter and from a height of 1,60 meters, showing an acoustic pressure no higher than the one
indicates in the table.
The vibrations transmitted by the machine are lower than 2,5 m2/s.
Attention!
Pursuant to articles L.D. 81/08, workers exposed to sound pressure levels above 85 dB (A) must
be protected by special individual protection devices.
It is therefore necessary, if such working conditions exist, to provide workers with such approved
individual protection devices and to inform them of the risks relating to noise exposure.

Information Section
- 7 - EN
1.10 Handling
The machine is supplied in a strong cardboard box secured with straps.
Transport the package using a fork-lift truck of adequate lifting capacity and make sure it is stable
and that weight is properly distributed on the forks.
Before starting to move, make sure the transit area is free and that there are no moving objects
on the packaging.
During movement, keep the load low for greater stability and safety.
When starting up the vacuum cleaner, move this by means of the wheels supplied.
The appliance must never be moved using fork-lift trucks or other equipment that lifts it off the
floor.
If for any reason the need arises to lift and transport the vacuum cleaner, this operation must be
performed under the responsibility of the user. The user is therefore invited to secure the load as
he best thinks fit to ensure the operation is performed in total safety.

Information Section
- 8 - EN
1.11 Warranty
DELFIN guarantees this vacuum cleaner model for a period of 24 months from the date of
purchase indicated on the tax document at the time of delivery of the vacuum cleaner by the
seller.
The warranty shall be invalidated in the event of the vacuum cleaner having been repaired by
unauthorised third parties or of equipment or accessories being used that have not been
supplied by DELFIN or which have not been recommended or approved by DELFIN or whose
serial number has been removed or altered during the warranty period.
DELFIN undertakes to repair or replace, free of charge, those parts which, during the warranty
period show manufacturing faults. Repairs shall be made in the DELFIN facilities only or in a
Technical Assistance Centre indicated by us and machines shall be sent to us carriage free
(transport costs to be paid by the user, unless otherwise agreed).
The warranty does not cover any cleaning of working parts.
Faults not directly attributable to materials or manufacture shall be examined only in our facility
or in a Technical Assistance Centre indicated by us. If claims appear unjustified, all the costs
relating to repair and/or replacement of parts shall be charged to the buyer.
The purchase tax document shall be shown to the technical personnel making the repairs and
must accompany the vacuum cleaner dispatched for repair.
The warranty does not cover: accidental damage, caused by transport or carelessness or
inadequate treatment, or improper use not in compliance with the instructions in the instruction
manual, or in any case by occurrences not dependent on normal operation or use of the vacuum
cleaner. DELFIN declines all responsibility for any damage to persons or things caused by bad or
improper use of the vacuum cleaner.
All disputes shall be referred to the Law Court of Turin (Italy).
The manufacturer declines all liability in the following cases:
➢ Failure to send the warranty Certificate
➢ Failure to follow the instructions
➢ Use of non-original spare parts
➢ Failure to service the machine properly

Safety Section
- 9 - EN
2.1 Safety details
The person in charge of safety shall be responsible for informing workers about the risks
associated with vacuum cleaner operation.
The obligation also exists of training workers so they are able to protect themselves and others.
Failure to observe basic safety regulations and Warnings could cause accidents during vacuum
cleaner operation, maintenance and repair. Accidents can often be avoided by recognising
potentially dangerous situations before these occur. Operators should be aware of potential
hazards and be trained and skilled enough. They should also have the tools necessary to perform
these duties properly.
DELFIN shall under no circumstances be deemed liable for accidents or damage caused by use of
the vacuum cleaner by personnel not properly trained or who use it in an improper manner, as well
as by even partial failure to comply with the safety regulations and intervention procedures
indicated in this manual.
The safety Warnings and warning notices are indicated in this manual and on the product.
Unless these hazard messages are heeded, the operator could become involved in accidents with
serious consequences for him/herself and for other people.
The safety messages are highlighted by the following symbols:
Attention!
Unless these messages are heeded, operator injuries could occur.
Warning!
Unless these messages are heeded, vacuum cleaner damage could occur.
DELFIN cannot foresee all possible circumstances capable of representing a potential hazard. The
warnings in this manual and on the products should not therefore be deemed exhaustive. In the
event of tools, procedures, work or machining methods being used that are not explicitly
recommended by DELFIN , make sure no hazards exist for operators and others.
Only ever use original DELFIN spare parts.
DELFIN declines all liability in the event of non-original spare parts being used.

Safety Section
- 10 - EN
2.2 Safety warnings
Attention!
The following indications are, by themselves, not enough to fully protect against all the hazards
that could arise during vacuum cleaner operation. These will have to be integrated with common
sense and the experience of the operator, both of which are crucial factors for preventing
accidents. Each section of this manual lists further specific safety warnings for the various
operations.
Maintenance jobs must always be performed with the power plug detached from the power
point.
The employer must inform and train the user according to the provisions of applicable laws.
Before using the machine, prepare and train yourself by reading this manual carefully. Use of the
machine by untrained and unauthorised persons is forbidden.
Using the machine to vacuum toxic substances is forbidden unless this has been equipped with
special filters required for the specific type of dusts. Such filters must be explicitly requested by
you.
If the machine is used to vacuum toxic-harmful substances, the container must be emptied and
the filters cleaned using adequate individual protection devices, selected according to the type of
substances to be vacuumed.
Do not vacuum flammable materials or substances or which could cause explosions (fuels,
solvents, etc.). To vacuum such materials, the machine must be built with Anti-explosion Motor
and Electric System and this must be requested by you explicitly.
Do not vacuum corrosive substances unless the machine is equipped with containers suitable for
this purpose ( Stainless-steel AISI 304 ).
Use of the machine without the supplied filters is not recommended.
If the filters are correctly fitted, the machine will not eject any objects.
Never rest miscellaneous materials on the horizontal protection guard.
The machine casing containing moving parts must not be removed by the user.
When using the machine, mind other people, especially children.
Use the machine cautiously on slopes and ramps.
Do not change direction on gradients.
Make sure the parked machine remains stable by operating the braked wheel.
During cleaning operations, maintenance jobs or when changing parts, the starter switch must be
off and the machine must be disconnected from the power mains by removing the cable from the
socket.
Only skilled persons should carry out repairs.

Safety Section
- 11 - EN
During use, mind the power supply cables and avoid crushing or pulling these.
Periodically check the mains power cable to ensure this is not damaged.
In the event of the cable being damaged, the machine must not be used.
In the event of the cable, plugs or couplings being replaced, make sure these are protected against
water spray and check mechanical strength.
Never pull the machine by means of the power cable and the vacuum pipe.
Motor brushes and burnt-out fuses must be replaced by DELFIN or authorised dealers. Always use
original spare parts.
The user is responsible for disposing of vacuumed substances in accordance with applicable laws.
After 10 years of use, we recommend sending the machine for a complete overhaul to DELFIN S.r.l.
The machine is supplied with: instruction manual, Exploded Spare Parts drawing, Test Sheet,
Warranty Slip, Approval Certificate.
In the event of Customers fitting a tool to the machine not supplied by DELFIN , make sure the
safety conditions required by Machine Directive 2006/42/CE are complied with and in any event,
DELFIN is unable to accept liability for any problems arising from use of such tool.
The vacuum cleaner must not be operated in a corrosive or explosive environment.
Always make sure the vacuum cleaner is free of all foreign materials such as debris, oil, equipment
and other objects that could affect operation and cause injury to persons.
Avoid using flammable or toxic solvents such as petrol, benzene, ether and alcohol for cleaning.
Avoid prolonged contact with solvents and inhaling their vapours. Avoid use close to open flames
or sources of heat.
Never use the vacuum cleaner without the filter.
Do not vacuum lit cigarette ends. The filter could be damaged.
Do not vacuum petrol or flammable liquids in general.
Make sure all the guards and protection devices are in place and that all the safety devices are in
place and working properly.
Do not wear loose or hanging clothing such as ties, scarves or torn garments that could become
trapped and be sucked up by the cleaner.
Do not open the vacuum container with the machine running.
The manual should always be kept handy for reference so the operating cycle can be checked
every time there are doubts. In the event of this manual being lost or damaged, ask DELFIN for a
new copy.

Safety Section
- 12 - EN
Structural damage and improper alterations or repairs could change the protection capacity of the
vacuum
cleaner and therefore cancel this certification.
Any alterations to the appliance must only be made by DELFIN engineers.
During maintenance jobs, affix a notice to the appliance indicating "MACHINE BEING SERVICED,
DO NOT START".
Climbing on the cleaner is forbidden.
Never touch electric wires, switches, buttons, etc. with wet hands.
Before connecting to the power mains, make sure the power voltage and frequency are those
shown on the machine plate.
Make power connections to a mains supply with efficient earth system.
In the event of an extension being used, make sure this is in perfect condition, marked CE and that
the cross section of the cable is suitable for the vacuum cleaner power input.
When restoring original working conditions, the appointed personnel should make sure that at the
end of the operating procedure, proper vacuum cleaner operation safety conditions are restored,
especially the safety devices and the protective guards.
Only adult persons should use the vacuum cleaner.
During vacuuming operations, always brake the vacuum cleaner using the special revolving
wheel lock.
In case of vacuums with grounding system, connect the grounding clamp with a conductive
surface connected with the earth.
For ATEX Vacuums:
•Connect the grounding clamp with a conductive surface connected with the earth.
•Do not manumit the vacuum/pressure relief valve.
•All maintenance operations must be executed in non-classified atmosphere.
•Do not vacuum incandescent or burning material.
•The operator must always wear antistatic cloths and shoes. The floor of the area to be
vacuumed must be antistatic.
•The opening of the dust collection container must be executed in non-classified atmosphere
area, after having disconnected and unplugged the machine and only after 10 minutes from
unplugging.

Safety Section
- 13 - EN
•It is prohibited to vacuum toxic substances unless the machine is provided with the
necessary specific filters for the type of dust to be vacuumed. Such specific filters must be
expressly required by the Customer for supply.
•Do not vacuum flammable or explosive substances gases or liquids (fuels, solvents etc.).
•Do not vacuum corrosive substances unless the machine is equipped with suitable containers
( Stainless-steel AISI 304 ).
•Do not suck lighted cigarettes, cigarette stubs or incandescent materials.
•Do not vacuum sources of ignition.
•The supply cable tap must be correctly plug in the current outlet in NON CLASSIFIED
atmosphere, or rather in a safety place.
For LONGOPAC Vacuums:
•If the machine is used to vacuum toxic-harmful substances, the Longopac® container must
be emptied and the filters cleaned using adequate individual protection devices, selected
according to the type of substances to be vacuumed.
•Do not open the vacuum Longopac® container with the machine running.

Safety Section
- 14 - EN
2.3 Safety plates and symbols
Plates are affixed to the vacuum cleaner showing safety symbols and/or messages.
Attention!
Make sure all the safety messages are legible.
Clean these with a cloth, soap and water. Do not use solvents, diesel fuel or petrol.
Replace the damaged plates with new ones supplied by DELFIN.
If a plate is affixed to a replaced part, make sure a new plate is affixed to the new part.
Attention!
Read the operator's and maintenance manual carefully before using the cleaner or doing any
maintenance jobs.
Warning!
Risk of crushing upper limbs while fitting and locking the material container (or material
Longopac® container) on the vacuum cleaner.
Never place hands between the material container (or the material Longopac® container) and
vacuum cleaner while locking.
Do not place hands on sides of container (or Longopac® container) near the guide pins while
locking.
Perform the container (Longopac® container) locking operation by means of the levers located
on the side, USING BOTH HANDS!
IMPORTANT
DO NOT BREATHE IN INFLAMMABLE AND/OR
EXPLOSIVE LIQUIDS OR POWDERS

Safety Section
- 15 - EN
2.4 Outstanding risks
Careful analysis of risks performed by the manufacturer and stored in the technical file has made
it possible to eliminate most of the risks associated with vacuum cleaner operation.
The manufacturer advises carefully following the instructions, procedures and advice contained
in this manual as well as applicable safety regulations, including the use of the envisaged
protection devices, both those integrated in the cleaner and individual.
Outstanding risks associated with the vacuum cleaner could be:
Risk of improper use in the presence of explosive and flammable substances.
The vacuum cleaner must not be used in environments containing substances in the form of
liquids that could vaporise at room temperature and flammable dusts and gas.
Risks of operation in humid environments.
Keep to the limits shown in this manual at chap. 1.6 Allowed environmental conditions.
Risk of erroneous interpretation of the safety pictograms.
Having identified the various outstanding risks, the manufacturer has affixed to the cleaner a
number of hazard labels in compliance with regulations relating to the graphic symbols to be used.
The user must immediately replace any safety plates that become illegible due to wear or damage.
Attention!
Removing the safety plates on the vacuum cleaner is strictly forbidden. The manufacturer
declines all liability in relation to vacuum cleaner safety in the event of failure to comply with the
above indications.
2.5 Applied directives
The following directives apply to the vacuum cleaner described in this manual:
➢ 2006/42/CE Machine Directive
➢ 2014/30/EU Electromagnetic compatibility directive (**)
➢ 2014/35/EU Low-voltage directive (**)
➢ For ATEX Vacuums: 2014/34/EU ATEX Directive
(**) For Air Series Vacuums, do not refer to this Directive.

Operation Section
- 16 - EN
3.1 Installation
Warning!
Before installing the vacuum cleaner, carefully make a sight check to pinpoint any damage
suffered during transport.
In the event of any component parts being damaged, do not proceed with installation. Notify the
manufacturer and reach an agreement on how to proceed.
The vacuum cleaner already features a suction filter.
Fit the accessory required for the type of vacuuming operation on the opposite end of the hose.
Note: No standard accessories (reducers, hoses, nozzles) are included with the vacuum;
accessories must be specified and ordered separately.
Contact your dealer for information relating to the different types of optional accessories available
for this specific vacuum cleaner model.
Fit the supplied pipe on the connector.

Operation Section
- 17 - EN
Make sure the power supply corresponds to the voltage and frequency indicated on the vacuum
cleaner plate. For AIR SERIE vacuums, please check the vacuum’s operating values
STANDARD
SERIE AIR
ATEX
Warning!
Do not fit the plug in the power socket with wet hands.
In the event of an extension being used, make sure this is in perfect condition, in compliance
with CE standards and with cable cross section suitable for the power input of the vacuum
cleaner.