Rotair MDVN 22K Operating instructions

USER'S AND
MAINTENANCE
MANUAL
Date:
20/02/2017
Code
MAN MDVN 22-26 K
ENG
Motor compressor MDVN 22 K –MDVN 26 K
Revision
02
Copyright © 2014, ROTAIR S.P.A. - All rights reserved This manual is intellectual property of ROTAIR S.P.A. Its
full or partial reproduction is forbidden under any form, on any support and by any means, without the written
authorization by ROTAIR S.P.A.
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USER'S AND MAINTENANCE MANUAL
Motor compressor
MDVN 22K –MDVN 26K

USER'S AND
MAINTENANCE
MANUAL
Date:
20/02/2017
Code
MAN MDVN 22-26 K
ENG
Motor compressor MDVN 22 K –MDVN 26 K
Revision
02
Copyright © 2014, ROTAIR S.P.A. - All rights reserved This manual is intellectual property of ROTAIR S.P.A. Its
full or partial reproduction is forbidden under any form, on any support and by any means, without the written
authorization by ROTAIR S.P.A.
Page
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Dear customer,
Thanks for having purchased this Rotair motor compressor, which is designed and manufactured in
compliance with high standards, in order to ensure high quality performance, as well as easy use and
installation.
For any information, you can contact our customer service at the following address:
ROTAIR Spa
Via Bernezzo, 67
12023 CARAGLIO (CN) - ITALY
Phone: [phone]
Fax [phone]
E-MAIL: [email protected]om

USER'S AND
MAINTENANCE
MANUAL
Date:
22/01/2015
Code
MAN MDVN 22-26 K
ITA
Motor compressor MDVN 22 K –MDVN 26 K
Revision
00
Copyright © 2014, ROTAIR S.P.A. - All rights reserved This manual is intellectual property of ROTAIR S.P.A. Its
full or partial reproduction is forbidden under any form, on any support and by any means, without the written
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FOREWORD
These service instructions have been drafted to facilitate the knowledge of the machinery purchased and its
modes of use.
In drafting them, we have intentionally omitted the technical in-depth description of some operations linked to
the motor and the axle, since such information is contained in the user's and maintenance of the respective
manufacturers.
The service instructions contain indications of utter importance concerning the safe appropriate and cost-
effective operation of the machine.
The compliance with said operations helps prevent potentially hazardous situations, additional costs and loss
of time, increasing at the same time its life-span.
The service instructions and safety measures reported in this manual must be complied with by the user of the
machinery.
Besides the service instructions and the accident prevention prescriptions which apply in the countries and
places of installation, all the more general rules of safety at the workplace must be complied with.
It is therefore recommended to carefully read the instructions reported in this manual.
This manual cannot be disclosed, duplicated or copied without the previous authorization by the Manufacturer.
Any lack of compliance with the above shall be pursued under the Law, in particular if the illicit action involves
advantage for competing companies.

USER'S AND
MAINTENANCE
MANUAL
Date:
22/01/2015
Code
MAN MDVN 22-26 K
ITA
Motor compressor MDVN 22 K –MDVN 26 K
Revision
00
Copyright © 2014, ROTAIR S.P.A. - All rights reserved This manual is intellectual property of ROTAIR S.P.A. Its
full or partial reproduction is forbidden under any form, on any support and by any means, without the written
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TABLE OF CONTENTS
1General.................................................................................................................................................................7
1.1 Definitions......................................................................................................................................................7
1.1.1 Qualified personnel..................................................................................................................................7
1.1.2 Hazard......................................................................................................................................................7
1.1.3 Hazardous area........................................................................................................................................7
1.1.4 Exposed person .......................................................................................................................................7
1.1.5 Operator...................................................................................................................................................7
1.1.6 Risk ..........................................................................................................................................................7
1.1.7 Guard .......................................................................................................................................................7
1.1.8 Protection Equipment...............................................................................................................................7
1.1.9 Expected use ...........................................................................................................................................7
1.1.10 Reasonably expectable incorrect use......................................................................................................7
1.1.11 Component...............................................................................................................................................7
1.1.12 Control Device..........................................................................................................................................8
1.1.13 Safety interlock.........................................................................................................................................8
1.1.14 Manufacturer............................................................................................................................................8
1.2 Machinery Identification ................................................................................................................................8
1.3 Harmonized technical standards...................................................................................................................9
1.4 General description of the machinery .........................................................................................................10
2Technical characteristics of the machinery...................................................................................................11
2.1 General technical characteristics ................................................................................................................11
2.2 Technical characteristics of the compressor...............................................................................................11
2.3 Technical characteristics of the engine.......................................................................................................12
2.4 Technical characteristics of the electric battery ..........................................................................................12
2.5 Service temperatures..................................................................................................................................12
2.6 Acoustic emissions......................................................................................................................................13
3Symbols and warnings.....................................................................................................................................14
3.1 Hazards.......................................................................................................................................................14
3.2 Forbiddances...............................................................................................................................................15
3.3 Obligations and notices...............................................................................................................................16
3.4 General notices...........................................................................................................................................16
4Use of the machinery .......................................................................................................................................18
4.1 Use allowed.................................................................................................................................................18
4.2 Use not allowed...........................................................................................................................................18
4.3 Residual risk................................................................................................................................................19
5Levels and qualifications of the personnel....................................................................................................20
6Safety provisions..............................................................................................................................................20
6.1 Safety provisions concerning transport.......................................................................................................20
6.2 Safety provisions concerning lifting.............................................................................................................21
6.3 Safety provisions relevant to towing (for road-certified compressors only) ................................................22
6.4 Prescriptions for the installation and parking of the motor compressor......................................................23

USER'S AND
MAINTENANCE
MANUAL
Date:
22/01/2015
Code
MAN MDVN 22-26 K
ITA
Motor compressor MDVN 22 K –MDVN 26 K
Revision
00
Copyright © 2014, ROTAIR S.P.A. - All rights reserved This manual is intellectual property of ROTAIR S.P.A. Its
full or partial reproduction is forbidden under any form, on any support and by any means, without the written
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6.5 Safety provisions concerning maintenance ................................................................................................24
7Machinery components....................................................................................................................................25
7.1 Chassis and axle.........................................................................................................................................25
7.2 Body ............................................................................................................................................................25
7.3 Engine.........................................................................................................................................................25
7.4 Compression unit ........................................................................................................................................25
7.5 Separator tank .............................................................................................................................................26
7.6 Belts and pulley...........................................................................................................................................26
7.7 Control panel...............................................................................................................................................26
8Electrical equipment of the machinery...........................................................................................................27
8.1 Operator's panel tools.................................................................................................................................27
8.2 Operator's panel pilot lamps........................................................................................................................28
8.3 Fuses...........................................................................................................................................................32
8.4 Lights (for road-certified version) ................................................................................................................33
9Hydraulic and pneumatic sytems ...................................................................................................................35
9.1 Hydraulic lubrication system .......................................................................................................................35
9.2 Pneumatic system.......................................................................................................................................36
9.2.1 Automatic adjustment of the engine rpm ...............................................................................................37
10 Provisions for the appropriate utilization of the motor compressor ..........................................................38
10.1 Before starting-up........................................................................................................................................38
10.2 Start-up........................................................................................................................................................39
10.3 During the work cycle..................................................................................................................................41
10.4 Stop.............................................................................................................................................................41
10.5 After stopping the machine .........................................................................................................................41
11 Monitoring and testing of the machine ..........................................................................................................42
11.1 Monitoring and testing of engine speed......................................................................................................42
11.1.1 Control system of maximum engine speed............................................................................................42
11.1.2 Control system of minimum engine speed.............................................................................................42
11.2 Monitoring and control of the air pressure of the compressor ....................................................................44
11.3 Monitoring and control of air pressure minimum compressor.....................................................................45
12 Safety device.....................................................................................................................................................46
12.1 Emergency stop buttons .............................................................................................................................46
12.1.1 Operation of the emergency button .......................................................................................................46
12.2 Verification of the safety valve ....................................................................................................................47
13 Maintenance......................................................................................................................................................48
13.1 Routine maintenance ..................................................................................................................................48
13.2 Maintenance program .................................................................................................................................49
13.3 Values of tightening screws and bolts.........................................................................................................51
13.4 Maintenance................................................................................................................................................52

USER'S AND
MAINTENANCE
MANUAL
Date:
22/01/2015
Code
MAN MDVN 22-26 K
ITA
Motor compressor MDVN 22 K –MDVN 26 K
Revision
00
Copyright © 2014, ROTAIR S.P.A. - All rights reserved This manual is intellectual property of ROTAIR S.P.A. Its
full or partial reproduction is forbidden under any form, on any support and by any means, without the written
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13.4.1 Checking and cleaning the filter air intake.............................................................................................52
13.4.2 Control the electrical battery ..................................................................................................................53
13.4.3 Fuso replacement ..................................................................................................................................54
13.4.4Replacement lamps light (for version approved) ...................................................................................54
13.4.5 Tyre pressure monitoring.......................................................................................................................55
13.4.6 Clean the radiator cooler........................................................................................................................56
13.4.7 Percentage dosage of cooling liquid......................................................................................................56
13.4.8 Checking and cleaning nozzle oil recovery............................................................................................57
13.4.9 Drainage of the fuel tank........................................................................................................................57
13.4.10 Replacing diesel pre-filter.......................................................................................................................58
13.4.11 Check break device................................................................................................................................58
13.4.12 Control of locking wheel bolts ................................................................................................................59
13.4.13 Oil filter replacement compressor ..........................................................................................................59
13.4.14 Replacement of compressor oil..............................................................................................................60
13.4.15 Checking the oil mist separator..............................................................................................................60
13.4.16 Replacement of the oil separator filter ...................................................................................................61
13.4.17 Engine control and maintenance ...........................................................................................................61
13.4.18 Control, tension and replacement of transmission belts........................................................................62
14 Spare parts........................................................................................................................................................64
15 Faults and troubleshooting .............................................................................................................................65
16 Disposal, elimination, disposal of the machine ............................................................................................67
16.1 Instructions for dismantling .........................................................................................................................67
17 Eliminating the machine ..................................................................................................................................67
18 Waste management..........................................................................................................................................68
18.1 Special waste..............................................................................................................................................68
18.2 Toxic and hazardous waste ........................................................................................................................68
18.3 Temporary storage......................................................................................................................................68
18.4 Features of the containers ..........................................................................................................................68
18.5 Registration requirements...........................................................................................................................68

USER'S AND
MAINTENANCE
MANUAL
Date:
22/01/2015
Code
MAN MDVN 22-26 K
ITA
Motor compressor MDVN 22 K –MDVN 26 K
Revision
00
Copyright © 2014, ROTAIR S.P.A. - All rights reserved This manual is intellectual property of ROTAIR S.P.A. Its
full or partial reproduction is forbidden under any form, on any support and by any means, without the written
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1 GENERAL
1.1 Definitions
The most significant definitions contained in this manual are reported hereinafter
1.1.1 QUALIFIED PERSONNEL
"Qualified personnel" are those personnel who are familiar with the rules for installation, assembly, repair and
servicing of the machinery and who are provided with the specified technical qualification, such as e.g.:
Technical training authorizing to operate in compliance with the safety standards as related to the hazards the
presence of electric current, pressure circuits, etc. may involve.
Technical background or - in any case - specific training relevant to the user's and maintenance procedures of
the machinery in safety conditions.
Training in the basic first-aid activities.
1.1.2 HAZARD
A potential source of injury or damage to health
1.1.3 HAZARDOUS AREA
Any area within and/or in proximity of machinery where the presence of a person constitutes a risk for the
health and safety of said person.
1.1.4 EXPOSED PERSON
Any person being fully or partially in a hazardous area
1.1.5 OPERATOR
The person/people charged to install, operate, adjust, clean, repair or move a
Machinery or perform its maintenance.
1.1.6 RISK
Combination of the likelihood and severity of an injury or damage to health which may arise in a hazardous
situation.
1.1.7 GUARD
Part of the machinery utilized to ensure protection by means of a material barrier.
1.1.8 PROTECTION EQUIPMENT
Device (different from a guard) which reduces the risk, by itself or associated to a guard.
1.1.9 EXPECTED USE
The use of the machinery in compliance with the user's information.
1.1.10 REASONABLY EXPECTABLE INCORRECT USE
The use of the machinery in a different way than the one indicated in the user's instructions, but which may
derive from the easily expectable human behaviour.
1.1.11 COMPONENT
A constituent part of the electrical/pneumatic equipment, usually specified by its function, but used in various
applications.

USER'S AND
MAINTENANCE
MANUAL
Date:
22/01/2015
Code
MAN MDVN 22-26 K
ITA
Motor compressor MDVN 22 K –MDVN 26 K
Revision
00
Copyright © 2014, ROTAIR S.P.A. - All rights reserved This manual is intellectual property of ROTAIR S.P.A. Its
full or partial reproduction is forbidden under any form, on any support and by any means, without the written
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1.1.12 CONTROL DEVICE
A device introduced in a control circuit and used to control the operation of the system (e.g. position sensors,
manual control switches, relays, electro-magnetic control valves).
1.1.13 SAFETY INTERLOCK
Mechanical, electrical or other device whose purpose is to prevent the parts of the machinery from operating
in specified conditions (generally, until the guard is closed)
1.1.14 MANUFACTURER
Physical or legal person who designed and/or develops machinery or partly-completed machinery which is
subject of this directive and who is liable for the compliance of the machinery or partly-completed machinery
with this directive as related to its marketing with his/her name or brand, or for personal use. In absence of a
Manufacturer as defined above, the Manufacturer shall be considered the physical or juridical person who
markets or puts into service machinery or partly-completed machinery.
1.2 Machinery Identification
The CE identification nameplate is attached on the motor compressor chassis.
Such nameplate reports the Manufacturer's data, the CE brand, the denomination of the machinery, the code
and year of manufacturing.
For any requests for spare parts or actions by our technicians, please refer to the data reported in the
nameplate; in particular the code number of the machinery must always be mentioned.
Figure 1.2-1 CE nameplate of motor compressor MDVN 22K –26K

USER'S AND
MAINTENANCE
MANUAL
Date:
22/01/2015
Code
MAN MDVN 22-26 K
ITA
Motor compressor MDVN 22 K –MDVN 26 K
Revision
00
Copyright © 2014, ROTAIR S.P.A. - All rights reserved This manual is intellectual property of ROTAIR S.P.A. Its
full or partial reproduction is forbidden under any form, on any support and by any means, without the written
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1.3 Harmonized technical standards
The machinery has been designed and developed in compliance with the provisions contained in the technical
standards reported herein under:
UNI EN ISO 12100
Safety of machinery -General design principles - Risk assessment and risk
reduction.
UNI EN ISO 13857
Safety of machinery–Safety distances to prevent from reaching the
hazardous areas with the upper or lower limps.
UNI EN ISO 13850
Safety of machinery - Emergency stop system, functional aspects
CEI EN 62061
Safety of machinery - Functional safety of the programmable electrical and
electronic control systems as related to safety
CEI EN 60204-1
Safety of machinery - Electrical equipment of the machineries. Part I:
General rules.
UNI EN 983
Safety of machinery. Safety requirements relevant to systems and related
components for hydraulic and pneumatic transmission. Pneumatics.
UNI EN 349
Safety of machinery - Minimum openings to prevent the crushing of parts of
the human body.
D. LGS. January 27th 2010
no.17
Implementation of Directive 2006/42/CE relevant to machinery, which
modifies directive 95/16/CE relevant to elevators.
UNI EN ISO 14121-1
Safety of machinery - Risk assessment. General principles
UNI EN ISO -TR 14121-2
Safety of machinery - Examples
Machine directive 2006/42/CE.
Article 7. Presumption of conformity and harmonized standards
1. The Member States deem that the machinery provided with the “CE”marking and accompanied by the
CE declaration of conformity, whose elements are provided for in Annex II, Part 1, Section A, comply with the
provisions of this directive.
2. The machinery manufactured in compliance with an authorized standard, whose reference has been
published on the Official Journal of the European Union is assumed to be compliant with the essential health
and safety requirements covered by such harmonized standard.
3. The Commission published the references of the harmonized standards in the Official Journal of the
European Union.
4. The Member States shall take the appropriate measures to allow the social partners influencing - at
national level - the development and control process of the harmonized standards.

USER'S AND
MAINTENANCE
MANUAL
Date:
22/01/2015
Code
MAN MDVN 22-26 K
ITA
Motor compressor MDVN 22 K –MDVN 26 K
Revision
00
Copyright © 2014, ROTAIR S.P.A. - All rights reserved This manual is intellectual property of ROTAIR S.P.A. Its
full or partial reproduction is forbidden under any form, on any support and by any means, without the written
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1.4 General description of the machinery
The machinery described in this manual is motor compressor MDVN 22K –MDVN 26K.
The motor compressor is a piece of machinery with the capacity of generating a given quantity of compressed
air in l/m by using a diesel engine as primary energy.
The pneumatic energy finds applications in different fields of use, where "pneumatic" operation tools,
accessories and equipment are utilized. For instance: demolition hammers, drilling hammers, vibrators, drilling
machines, rammers, coating machines, etc.
Each of these tools/-accessories has its own consumption of compressed air, expressed in litters per minute.
The optimum coupling between the compressor and the tool is achieved when the compressed air
consumption does not exceed 85% of the air generated by the compressor (furthermore, it must be taken into
consideration that the quantity of compressed air required by the tool shall increase in time, proportionally to
the wear of the tool itself).
The correct compressor-tool coupling ratio allows the machinery operating in optimum conditions, as
appropriate to ensure long life-span at the highest performance.
An oversized tool - besides creating unfavourable conditions for the appropriate operation of the machinery -
shall not develop full performance, since it cannot resort to the required quantity of compressed air.
This machinery has been designed to work at ambient temperature ranging from -10 and +40°C.

USER'S AND
MAINTENANCE
MANUAL
Date:
22/01/2015
Code
MAN MDVN 22-26 K
ITA
Motor compressor MDVN 22 K –MDVN 26 K
Revision
00
Copyright © 2014, ROTAIR S.P.A. - All rights reserved This manual is intellectual property of ROTAIR S.P.A. Its
full or partial reproduction is forbidden under any form, on any support and by any means, without the written
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2 TECHNICAL CHARACTERISTICS OF THE MACHINERY
The general technical characteristics of the machinery are reported hereinafter.
2.1 General technical characteristics
2.2 Technical characteristics of the compressor
DESCRIPTION
TECHNICAL VALUES AND DATA
Service pressure
6.5 bar
Minimum pressure
5 bar
Max. pressure
8 bar
Rated payload at service pressure
2000 l/min
2500 l/min
Cooling typology
Hydraulic oil (*)
Hydraulic system capacity
6 Litres
(*) We recommend COMPRESSOR 46 - TOTAL ERG.
MDVN 22K
MDVN 26K
DESCRIPTION
TECHNICAL VALUES AND DATA
Length
2970 mm
Width
1410 mm
Height (with hood closed)
1200 mm
Mass of the braked version
547 Kg
597 Kg
Mass of the non- braked version
490 Kg
540 Kg
Compression system
Screw single-stage
Fuel tank capacity
30 Lt
Tire data
145/80 R13 –155/80R13

USER'S AND
MAINTENANCE
MANUAL
Date:
22/01/2015
Code
MAN MDVN 22-26 K
ITA
Motor compressor MDVN 22 K –MDVN 26 K
Revision
00
Copyright © 2014, ROTAIR S.P.A. - All rights reserved This manual is intellectual property of ROTAIR S.P.A. Its
full or partial reproduction is forbidden under any form, on any support and by any means, without the written
authorization by ROTAIR S.P.A.
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2.3 Technical characteristics of the engine
MDVN 22K
MDVN 26K
DESCRIPTION
TECHNICAL VALUES AND DATA
Engine brand
KUBOTA
Type
D902-E3B
D1105-E3B
Number of cylinders
3
Fuel
Diesel
Cooling
By liquid
Power available
18.5 kW at 3600 rpm
18.5 kW at 2900 rpm
Max. rotation speed
3600 r.p.m.
3000 r.p.m.
Min. rotation speed
1900 r.p.m.
1900 r.p.m.
Emissions
Tier 4 final
Engine oil tank capacity
4 Litres
5.1 Litres
2.4 Technical characteristics of the electric battery
DESCRIPTION
TECHNICAL VALUES AND DATA
Rated voltage
12 Vdc
12 Vdc
Capacity
55 Ah
70 Ah
Discharge current
270 A
400 A
2.5 Service temperatures
DESCRIPTION
TECHNICAL VALUES AND DATA
Minimum ambient temperature limit
-10°C [14 ° F]
Maximum ambient temperature limit
+40° C [105°F]
Humidity limits
≤ 50% (a +40°C)
Altitude
1.000 m above sea level

USER'S AND
MAINTENANCE
MANUAL
Date:
22/01/2015
Code
MAN MDVN 22-26 K
ITA
Motor compressor MDVN 22 K –MDVN 26 K
Revision
00
Copyright © 2014, ROTAIR S.P.A. - All rights reserved This manual is intellectual property of ROTAIR S.P.A. Its
full or partial reproduction is forbidden under any form, on any support and by any means, without the written
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2.6 Acoustic emissions
This machinery is included in the list of machinery mentioned in Annex 1 of European Directive
2000/14/CE dated May 8th 2000 on the approaching of the Member States legislation as related
to the acoustic emissions in the environment of machinery and equipment allocated to work
outdoor.
The noise tests run with the machinery in operation have highlighted an allowed level of sound power LWA in
dB(A)/1 pW lower than 98 db (limit value mentioned in table Art. 12 Directive 2000/14/CE)
The position and value of the max. acoustic pressure as well as the acoustic pressure values must be
indicated.
If - during the running-in stage of the machinery components - excessive noise arises, call ROTAIR
S.P.A customer service.

USER'S AND
MAINTENANCE
MANUAL
Date:
22/01/2015
Code
MAN MDVN 22-26 K
ITA
Motor compressor MDVN 22 K –MDVN 26 K
Revision
00
Copyright © 2014, ROTAIR S.P.A. - All rights reserved This manual is intellectual property of ROTAIR S.P.A. Its
full or partial reproduction is forbidden under any form, on any support and by any means, without the written
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3 SYMBOLS AND WARNINGS
The pictograms and main warning for the operators are reported herein under and indicated by the following
denominations and symbols:
3.1 Hazards
WARNING
The pictogram calls the attention of specific provisions in order to prevent damage.
WARNING FOR ELECTRICAL HAZARD
The pictogram calls the attention of specific provisions in order to prevent damage.
WARNING FOR CRUSHING HAZARD
The pictogram calls the attention on a likely hazardous situation with risk of crushing the
upper limbs.
WARNING HAZARD OF ORGANS IN MOTION
The pictogram calls the attention to the hazard of organs in motion.
WARNING ON RISK OF SCALDING OR HAZARD DUE TO HIGH-TEMPERATURE
ELEMENTS
The pictogram calls the attention on the hazard of high-temperature elements and risk of
scalding.
OVERHANGING LOAD WARNING
The pictogram calls the attention to the hazard due to the presence of overhanging loads
WARNING OF THE PRESENCE OF PRESSURE VESSELS
The pictogram calls the attention to the presence of pressure vessels.
WARNING:
OVERHANG
ING LOADS

USER'S AND
MAINTENANCE
MANUAL
Date:
22/01/2015
Code
MAN MDVN 22-26 K
ITA
Motor compressor MDVN 22 K –MDVN 26 K
Revision
00
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full or partial reproduction is forbidden under any form, on any support and by any means, without the written
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3.2 Forbiddances
FORBIDDANCE TO REMOVE THE PROTECTION EQUIPMENT AND THE GUARDS
The pictogram calls the attention on the forbiddance to remove protection equipment such
as fixed, movable, interlock guards or to tamper with photocells or photocell barriers.
FORBIDDANCE TO PERFORM CLEANING OR MAINTENANCE WHEN THE
MACHINERY IS IN MOTION
The pictogram calls the attention on the forbiddance to perform cleaning or maintenance
operations with organs in motion.
FORBIDDANCE TO TRANSIT UNDER OVERHANGING LOADS
The pictogram calls the attention on the forbiddance to transit under overhanging loads.
FORBIDDANCE TO START THE MACHINERY WHEN THE HOOD IS OPEN
DO NOT REMOVE THE
SAFETY DEVICES
DO NOT REPAIR OR
ADJUST WHEN IN
MOTION

USER'S AND
MAINTENANCE
MANUAL
Date:
22/01/2015
Code
MAN MDVN 22-26 K
ITA
Motor compressor MDVN 22 K –MDVN 26 K
Revision
00
Copyright © 2014, ROTAIR S.P.A. - All rights reserved This manual is intellectual property of ROTAIR S.P.A. Its
full or partial reproduction is forbidden under any form, on any support and by any means, without the written
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3.3 Obligations and notices
NOTICES
This symbol recommends to consult the manual before undertaking a given action.
OBLIGATIONS TO USE THE PPE (PERSONAL PROTECTION EQUIPMENT)
The pictogram calls the attention on the obligation to use the personal protection
equipment.
NOTICES
This symbol highlights that the description involves significant parts, since they may cause
severe mechanical and electrical damage and malfunctions if the relevant standards are not
complied with. It is recommended to comply with the information contained in this manual and
with the law provisions in force as related to health and safety at the workplace.
HIGHLIGHTING OF THE HOOKING POINT TO LIFT THE MACHINERY.
OBLIGATION TO USE THE SUPPORT FOOT, THE PARK BRAKE AND WHEEL LOCKING
WEDGES.
3.4 General notices
This manual includes the user's and routine maintenance instructions of the machinery. Whenever it is not
specified otherwise, the operational and maintenance actions are to be considered as "specialized", i.e. they
can only be performed by a technician appointed to the purpose.
Before undertaking any operation on the machinery, carefully read this manual.
ROTAIR S.P.A. declines any responsibility for any operation performed in conflict with the contents of this
document.
Before utilizing the machinery, carefully read this document and comply with the safety law, regulations and
standards in force.
This manual and the annexed documents must be considered as an integral part of the machinery they refer
to and must always accompany the machinery, even if the latter is transferred to another user. It is therefore
appropriate to preserve them for further reference.
This manual and the annexed documents are specific for the machinery they have been drafted for.
Do NOT utilize this manual and the annexed documents to run operations on similar
machinery, of the same brand or typology.
THE USE OF THE
PERSONAL PROTECTION
EQUIPMENT IS
MANDATORY

USER'S AND
MAINTENANCE
MANUAL
Date:
22/01/2015
Code
MAN MDVN 22-26 K
ITA
Motor compressor MDVN 22 K –MDVN 26 K
Revision
00
Copyright © 2014, ROTAIR S.P.A. - All rights reserved This manual is intellectual property of ROTAIR S.P.A. Its
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Page
17/68
ROTAIR S.P.A. is available to its Customer for any further information. Please report the information (type of
machinery, model and code) contained in the machinery identification nameplate. All the specific data not
indicated in the text are mentioned in chapter "Technical characteristics of the Machinery" as well as in the
technical annexes of this user's and maintenance manual.
This manual thoroughly describes:
-The information relevant to towing, lifting and parking of the machinery;
-The general rules and recommendations useful for routine and extraordinary maintenance;
-The modalities to identify and order the spare parts.
Remark: the instructions for the appropriate use of the engine are described in the manual drafted by the
engine manufacturer.
This manual must be preserved with care, in its folder, far from sources of humidity, heat and sun rays, so that
it can be consulted at any time by both the personnel appointed to the use and by those who need to perform
routine and extraordinary maintenance.
This machinery has been exclusively designed and manufactured to deliver compressed air in the conditions
stated by the Manufacturer. Every other utilization not mentioned in the "expected uses" shall relieve the
manufacturer from any liabilities, which will be at full charge of the user.
“Approved purpose" assumes compliance with the provisions reported hereinafter and related to the
appropriate use and maintenance, as well as to the transport of the unit.
All the accident prevention regulations and standards in force need to be complied with as well, besides
complying with the general rules in terms of safety and occupational medicine which are governed by the
legislation in force.
The manufacturer declines any responsibility in case of changes made on the machinery without its
authorization.
Before commissioning, the buyer must ascertain that ANY equipment or machinery, components and
protection installations that are not part of the supply of this machinery comply with Machine Directive
2006/42/CE and to the other applicable European Directives (2006/95/CE - 2004/108/CE, etc.).

USER'S AND
MAINTENANCE
MANUAL
Date:
22/01/2015
Code
MAN MDVN 22-26 K
ITA
Motor compressor MDVN 22 K –MDVN 26 K
Revision
00
Copyright © 2014, ROTAIR S.P.A. - All rights reserved This manual is intellectual property of ROTAIR S.P.A. Its
full or partial reproduction is forbidden under any form, on any support and by any means, without the written
authorization by ROTAIR S.P.A.
Page
18/68
4 USE OF THE MACHINERY
4.1 Use allowed
The machinery described in this manual is motor compressor MDVN 22K and MDVN 26K.
The machinery is allocated to work outdoor.
The motor compressor is a piece of machinery with the capacity of generating a given quantity of compressed
air in l/m by using a diesel engine as primary energy.
The pneumatic energy finds applications in different fields of use, where "pneumatic" operation tools,
accessories and equipment are utilized. For instance: demolition hammers, drilling hammers, vibrators, drilling
machines, rammers, coating machines, etc.
Each of these tools/-accessories has its own consumption of compressed air, expressed in litres per minute.
The optimum coupling between the compressor and the tool is achieved when the compressed air
consumption does not exceed 85% of the air generated by the compressor (furthermore, it must be taken into
consideration that the quantity of compressed air required by the tool shall increase in time, proportionally to
the wear of the tool itself).
The correct compressor-tool coupling ratio allows the machinery operating in optimum conditions, as
appropriate to ensure long life-span at the highest performance.
An oversized tool - besides creating unfavourable conditions for the appropriate operation of the machinery -
shall not develop full performance, since it cannot resort to the required quantity of compressed air.
This machinery has been designed to work at ambient temperature ranging from -10 and +40°C.
WARNING: It must be highlighted that the compressed air generated by this unit may contain
some very fine traces of oil, therefore it is not appropriate to be utilized with those systems that
call for fully oil-free air (e.g..: food processing and pharmaceutical industry, transports of flours
and powders, cement, etc...).
4.2 Use not allowed
It is not allowed to use the machinery for other processes than those which are mentioned in the section
above. ROTAIR S.P.A. declines any responsibility as related to injuries or accidents due to lack of compliance
with the specific provisions for use.

USER'S AND
MAINTENANCE
MANUAL
Date:
22/01/2015
Code
MAN MDVN 22-26 K
ITA
Motor compressor MDVN 22 K –MDVN 26 K
Revision
00
Copyright © 2014, ROTAIR S.P.A. - All rights reserved This manual is intellectual property of ROTAIR S.P.A. Its
full or partial reproduction is forbidden under any form, on any support and by any means, without the written
authorization by ROTAIR S.P.A.
Page
19/68
4.3 Residual risk
Avoid standing in front of the compressed air discharges. The direct exposure to the air jet may
cause medium severity injuries because of the strength and speed of the compressed air.
The machine must operate outdoor, because of the presence of the engine and of the relevant
exhaust gases.
It is strictly forbidden to operate the machine in indoor environments whose atmosphere is
made of vapours or mixtures of corrosive or explosive gases.
When performing demolition, drilling, sandblasting activities or any other operation that generates dust the tool
needs to be connected to the compressor through a pressure-resistant hose of sufficient length to keep the
machinery away from the work area, thus preventing the clogging of both the exhaustion filters mounted on
the unit and of the radiator for the cooling of the lubrication and cooling liquids. Even in this case, a good
operator will locate the machinery leeside versus the work area.
The machinery has been designed and built to work with the hood closed and - consequently - it is forbidden
to keep it open when the engine is on, because - besides generation harmful sound emissions - the required
internal ventilation would be interrupted, and this is instead indispensable for the appropriate operation of the
compressor.
Make sure that the hood is closed, as well as the hinges located on the rear side of the motor compressor.
Figure 4.3-1 Engine compartment hood closing hinges
Even selecting the hoses to connect the machinery to the tool, make sure that they are sized as appropriate,
taking into account their length, the volume of air which needs to pass through them and the service
pressures: if the hoses show a too small diameter or excessive length, the air flow would interrupt, with
subsequent loss of load and poor performance of the tool.
The hoses which convey compressed air to from the machinery to the tool, or to any device applied, is to be
provided with a tap located at the end which is connected to the tool; the tap shall be held closed during the
connection of the hoses to both the machinery and the tool in order to prevent an inappropriate opening of the
tap on board the machine from generating strong flickering of the piping, which may cause injuries. Before
disconnecting any hose, make sure there is no pressure inside.

USER'S AND
MAINTENANCE
MANUAL
Date:
22/01/2015
Code
MAN MDVN 22-26 K
ITA
Motor compressor MDVN 22 K –MDVN 26 K
Revision
00
Copyright © 2014, ROTAIR S.P.A. - All rights reserved This manual is intellectual property of ROTAIR S.P.A. Its
full or partial reproduction is forbidden under any form, on any support and by any means, without the written
authorization by ROTAIR S.P.A.
Page
20/68
5 LEVELS AND QUALIFICATIONS OF THE PERSONNEL
The actions on the machinery must be performed by qualified, trained and informed personnel only.
"Qualified personnel" means people who - based upon their profession - have acquired experience
and instructions as well as knowledge on the relevant standards and provisions on accident
prevention and operational conditions. Such personnel, appointed by the machinery safety
managers, must be able to perform the required operations as well as to recognize and anticipate
the potential hazards.
Entrust the activities to appropriately trained or instructed personnel only; determine unmistakably the
competences of the personnel as related to the fine tuning and to the maintenance and repair activities.
Define the responsibility of the operators appointed to run the equipment, also through accurate written
provisions and authorize them to reject provisions by third parties if in conflict with the safety regulations and
standards.
Make sure that the activities are performed by purposely-appointed personnel only.
The actions on the electrical equipment of the machinery can be performed - in compliance with the electro-
technical regulations and standards - only by qualified electricians or by people with an appropriate level of
competences in the electro-technical field.
The mechanical and pneumatic maintenance can be performed by the operators of the authorized workshops
only.
6 SAFETY PROVISIONS
6.1 Safety provisions concerning transport
The motor-compressors which are not certified for towing need to be loaded onto another means of transport.
The motor compressor shall have to be attached as appropriate to the floor of the means of transport in order
to prevent and unbalancing of the load during transport.
The unit is shipped by Rotair attached to a support appropriate for its handling by means of fork-lift trucks;
such wooden platform facilitates the anchorage to the floor of the
transport vehicle and prevents the load from sliding. For safe
transport, operate as follows:
1) Locate the unit with the towing steer opposed to the cockpit of the
transport vehicle.
2) Locate the towing bar as in Figure 6.1-1.
3) Make the ropes pass around the towing bar and tighten them by
means of the winches provided with the means of transport.
4) Set two wedges (Part A Figure 6.1-1) on each wheel, attaching
them to the vehicle floor, in order to prevent the machinery from
moving. Utilize wedges of appropriate sizes, both in height and in
width.
5) Travel at moderate speed.
Figure 6.1-1 Instruction for towing in safe
conditions