NARDI COMPRESSORI PACIFIC E23 Operating instructions

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PACIFIC E23
PACIFIC EG23
HIGH PRESSURE BREATHING
AIR COMPRESSOR
User’s and Maintenance Manual

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This User’s and Maintenance Manual contains general information
and instructions for the operation and maintenance of high pressure
breathing air compressor PACIFIC E23 EG23. All users must read
this manual carefully and understand it in its entirety before
operating the machine.
WARNING. The operation of this machine is to take place only
after having read this manual in all its parts.

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INDEX
1 BASIC INFORMATION page 05
1.01 Warning Symbol Explained page 05
1.02 Precautions page 05
1.03 Brief ntroduction page 05
1.04 Description of the Compressor Block page 06
1.05 Description of PAC F C E23 – EG23 (Breathing Air) page 07
1.06 Technical Datasheet PAC F C E23 – EG23 page 08
2 SAFETY REGULATIONS FOR THE USE OF THE COMPRESSOR page 09
2.01 dentification of Safety Regulations for the Operators page 09
2.02 Safety Regulations for the Operators and for the Proper Use of the Compressor page 09
2.03 Safety Essentials page 09
2.04 General Safety Considerations page 10
3 WARRANTY AND ASSISTANCE page 11
3.01 Warranty of the Compressor page 11
3.02 Maintenance and Assistance page 11
INSTALLATION page 12
4.01 Unpacking and Handling page 12
4.02 Placement in Open Air page 12
4.03 Placement in a Close Room and Minimum Requirements of the Room page 12
4.04 Room with Artificial Ventilation page 13
4.05 ntake Pipe page 14
4.06 Electric Line Connection page 14
5 QUICK STARTING GUIDE page 15
6 OPERATION AND USE page 16
6.01 Preparing to Start the Compressor page 16
6.02 Starting the Compressor page 16
6.03 Use of Filling Valves page 17

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7 MAINTENANCE AND SERVICE page 18
7.01 Maintenance Operations page 18
7.02 Lubrication System page 18
7.03 Oil page 18
7.04 Oil Change page 19
7.05 Change Type of Oil page 19
7.06 Change Oil Filter page 19
7.07 Alarm Oil Level page 20
7.08 Change ntake Filter page 20
7.09 Maintenance of ntermediate Separators page 21
7.10 Carbon Filter for Breathing Air page 21
7.11 Carbon Filter Cartridge page 22
7.12 Lifetime Filter Cartridges Charts – PAC F LTER 1, PAC F LTER 2 and PAC F LTER 3 page 23
7.13 Pressure Maintaining Valve page 25
7.14 Heads and Compression Valves page 25
7.15 Valve Replacement – First Stage page 26
7.17 Valve Replacement – Second Stage page 26
7.18 Valve Replacement – Third Stage page 27
7.19 Safety Valves page 27
7.20 Filling Valves and Filling Hoses page 28
7.21 Automatic Condensate Drain page 28
7.22 Automatic Stop System page 29
7.23 Use of the Electronic Control Panel page 29
7.24 Visible Alarms and Actions page 32
7.25 Special Waste Disposal page 32
7.26 Trouble-shooting page 33
8 SPARE PARTS page 3
Exploded View Drawing Driving Gear page 34
Exploded View Drawing Driving Gear page 35
Exploded View Drawing Crankcase with Accessories page 36
Exploded View Drawing First Stage page 37
Exploded View Drawing Second Stage page 38
Exploded View Drawing Third Stage page 39
Exploded View Drawing Filter Separator page 40
Exploded View Drawing Filter Separator page 41
Exploded View Drawing Cooling System page 42
Exploded View Drawing Filter Housing PAC F LTER 1 page 43
Exploded View Drawing Filter Housing PAC F LTER 2 page 44
Exploded View Drawing Filter Housing PAC F LTER 3 page 45
Exploded View Drawing Filling Valve 300 Bar page 46
Exploded View Drawing Filling Valve 200 Bar page 47
Exploded View Drawing Filling Devices with Connections page 48
Exploded View Drawing Automatic Condensate Drain page 49
9 MAINTENANCE SCHEDULE TABLE page 50

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1 BASIC INFORMATION
1.01 WARNING SYMBOL EXPLAINED:
This manual contains special messages to bring your attention to important information regarding safety and proper
operation of the machine. The symbol below is placed in different parts of the manual next to paragraphs that all users
must be fully familiar with. Make sure you read all the information carefully to avoid injury and/or machine damage.
1.02 PRECAUTIONS:
The compressors are manufactured in accordance with the EC Machinery Directive 2006/ 2/EC, in accordance
with the Law on General Product Safety dated 01/05/200 on noise emissions and in accordance with the
Machinery Directive, Annex I, Section 1.7. . and following. The machine is constructed in a workmanlike manner
and in accordance with technical and operational aspects of safety management.
NARDi COMPRESSORI also declares that the compressor has been subjected to a compliance pressure test,
certifying with our 'DECLARATION OF CONFORMITY'' that the product complies with Pressure Equipment
Directive 2006/ 2/EC.
Before using the compressor we recommend reading carefully the following indications:
1. Read carefully the manual for the proper operation of the compressor.
2. Do not allow the air that comes out from the compressor to be directed to people or animals.
3. Do not operate the compressor in damp places and/or places without good air ventilation.
4. Make sure the compressor is placed in a stable position.
5. The maximum pressure of the compressor is clearly indicated on the compressor itself.
6. When using the compressor place it in a fresh, well ventilated location and away from heat sources.
7. The compressor can reach high temperatures during operation.
8. Do not to allow children to handle the compressor even when it is turned off.
9. Do not use the compressor to suck/compress gases other than ambient air or air with an oxygen content higher than
21%.
1.03 BRIEF INTRODUCTION:
PACIFIC E23 – EG23 is a high pressure compressor used to compress air for breathing in scuba diving, firefighting and
military applications, among others. The maximum compression pressure can arrive at 420 bar and the exercise
pressure can be 225 bar or 330 bar.
Main parts of the compressor:
•Pump Unit
•Electric Motor
•Series of separators and filter
•Filling hoses and connectors for cylinders
•Protection and anti-vibration system
•Automatic condensate drain*
•Electronic control system*
•Automatic start and stop system*

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(*) These features can be optional based on the model and can be requested when ordering the compressor.
1.0 DESCRIPTION OF THE COMPRESSOR BLOCK:
The compressor block PACIFIC 23 has a range of use for high pressure air up to a maximum of 330 bar (4700 psi). The
compressor consists of three stages driven by three pistons. The first stage is in the center, the second is on the right
(fig.1) and the third is on the opposite side.
The compressor block is a single body unit including several intermediate separators that are placed between the
cooling serpentines (inter-cooler) of the various stages. The flywheel of the compressor does not require balancing
because it is made of ultra-light alloy materials while the compressor has a crankshaft complete with counterweights that
eliminate vibration due to dead times or non-compression times.
The movement of pistons is transmitted through the connecting rods using roller bearings. The roller bearings have a
high workload and as a result the mechanism is very strong. Cylinders are made in aluminum with a barrel in cast iron
inside.
This allows the machine to be the most technologically advanced product available in the market. The main advantage is
that the cooling fins dissipate heat much faster and is more resistant to corrosion, compared to cast-iron.
The machine has a large capacity oil storage sump of 3,5 liters, a gear oil pump for forced-feed lubrication followed by
an oil filter and a magnet that holds back all the iron particles inside the sump. This way the oil will remain clean which in
turn makes the machine more reliable.
COMPRESSOR BLOCK COMPONENTS:
1. ntake filter 1
st
stage
2. Compression valve 1st stage
3. ntercooler 1
st
stage
4. Safety valve 1
st
stage
5. Head 2
nd
stage
6. ntermediate separator 2
nd
stage
7. ntercooler 2
nd
stage
8. Safety Valve 2
nd
stage
9. Head 3
rd
stage
10. ntercooler 3
rd
stage
11. Safety valve 3
rd
stage and relief valve
12. ntermediate separator 3
rd
stage
13. Gear oil pump for forced-feed lubrication
14. Oil filter
15. Oil refill plug
16. Oil sump drain plug and tap

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1.05 DESCRIPTION OF PACIFIC E23 – EG23 :
The structure of the PACIFIC E23 – EG23 is very robust, designed to suppress vibration discharging it on the ground
and thus reducing up to 60% of noise. This is possible thanks to an internal thermo acoustic insulation that guarantees
noise levels lower than 70db(A).
All the elements, the internal structure and the walls around the internal structure are painted with epoxy coatings which
grant an extraordinary resistance to corrosion. This ensures longer lasting of the equipment and as a consequence it
extends the life of the compressor block inside.
The air filtering system is placed in the front part of the compressor, in the outside, in order to simplify and expedite the
replacement of the filter cartridge. t is possible to add a second filtering system (optional accessory) that can be placed
next to the filtering system present in the compressor.
n the front, we also find the electric control panel and the final pressure gauge. Up to four filling valves can be used to
connect filling hoses and filling valves. The condensate drain valve is placed in the back of the compressor.
COMPRESSOR COMPONENTS:
1. Electronic control panel
2. Final pressure gauge
3. Filling valves and hoses
4. Filtering System PAC F LTER 1
(PAC F LTER 2 and PAC F LTER 3 are optional)

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1.06 TECHNICAL DATASHEET PACIFIC E23 – EG23 :
TABELLA CARATTERISTICHE TECNICHE - TECHNICAL DATA
Description Descrizione Unità - Unit PACIFIC E23 PACIFIC EG23
Working Pressure Pressione di esercizio PN 200 300 200 300
Charging rate Aria Resa L/min. – m
3
/h – cfm 230 – 3,8 – 8, 3 230 – 3,8 – 8, 3
Safety Valve Pressure Pressione di esercizio Bar – Psi
225-3200 330-4700 225-3200 330-4700
Compressor block Gruppo pompante Name – Nome PACIFIC 23 PACIFIC 23
Number of stages Numero di stadi N° 3 3
Number of connecting
rods Numero di bielle N° 3 3
Pressure st Stage Pressione ° stadio Bar / Psi 7,5 – 0 7,5 – 0
Pressure 2nd Stage Pressione 2° stadio Bar / Psi 65 – 940 65 – 940
Pressure 3th Stage Pressione 3° stadio Bar / Psi
225-3200 330-4700 225–3200 330-4700
Compressor Block Oil
capacity Capacità coppa dell’olio Liter – gal(US) 3,5 – 0,924 3,5 – 0,924
Speed Compressor Giri Compressore r.p.m. 350 350
Oil Type Tipo di Olio Name – Nome NARDI SYNTHETIC 50
Environment working
temperature
Temperatura ambiente di
lavoro °C / °F
From +5°C to +45°C / From +4 °F to
+ 3°F
Max inclination of
compressor
Max inclinazione del
compressore Grade – Gradi 5° 5°
Max operating height
Max altezza dal livello del
mare Meter / Feet 2000 / 6500 2000 / 6500
Power pump weight Peso gruppo pompante Kg. / lb 47 / 03 47 / 03
Dry and oil intermediate
separator Separatori acqua olio N° 2 2
Filtration Sistema Filtrante Name – Nome PAC ** PAC **
Interstage coolers and
after coolers Tubi di raffreddamento Material – Materiale Acciaio Inox – Stainless Steel
Breathing air Aria respirabile Directives - Direttive UNI EN 202 :2000 – ANSI/CGA E – Z 80
Filling time single cilynder
0 L. 0-200 Bar
Tempo ricarica bombola
0 L. 0-200 Bar Min. 08’: 46’’ 08’: 46’’
Motor Motore Tipe Three Phase Gasoline
Operating Voltage Tipo di Voltaggio Volt / Hz 230 → 690 / 50-60 -
Power Potenza Motore Kw 4 6,7
Noise level Pressione Sonora dB 77 86
Type of enclosure Protezione IP 54 -
Current Rating Assorbimento Ampere
9 (230) – (400) -
Weight Peso Kg. / lb (US) 08 / 238 08 / 238
** Standard filtration system - ** Sistema filtrante standard

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2 SAFETY REGULATIONS FOR THE USE OF THE COMPRESSOR
2.01 IDENTIFICATION OF SAFETY REGULATIONS FOR THE OPERATOR:
t is very important to check and be familiar with the potentially dangerous parts of the machine before
putting it into operation. n order to facilitate this, warning labels have been placed to identify the
following: High pressure, pressure valve, rotating fans, hot surfaces, etc.
Additionally, some components are mounted on the machine for accident prevention and global security that in the event
of malfunction or breakdown intervene so as not to cause danger to the life of the operators.
These components should always be present and cannot be removed or modified. n case of need contact our
technicians. The operator should make sure that the equipment and the safety components are in good working
condition at all times.
The compressor needs to be checked regularly by the operator and by technicians who will replace any worn or
damaged components.
2.02 SAFETY REGULATIONS FOR THE OPERATOR AND FOR THE PROPER USE OF THE
COMPRESSOR:
The operators of the compressor must have technical knowledge about breathing air, be aware of
current regulations and be familiar with the operation of the machine perfectly. n the case of
delegation of work, the operator of the compressor should take all necessary measures to inform the
next operator of all the maintenance operations required.
The compressor is designed to produce compressed breathing air in accordance with regulation D N EN 12021.
t draws air from the surrounding environment (the operator must make sure intake air is devoid of fumes and / or
harmful gases) and passing through an air intake filter it begins the cycle of compression / filtering until the air arrives at
the cylinder in high pressure.
2.03 SAFETY ESSENTIALS:
•Fill only inspected and tested cylinders and never exceed their working
pressure.
•The compressor must not take in fug, frowst or polluted air, it should not be
placed in areas where there is dust, danger of explosion, corrosion or fire.
•If the compressor is driven by a combustion engine, its use is prohibited in
closed environments. In any case, make sure that air intake is opposite to
the direction of the fumes coming from the engine. Refueling must be done
only when the machine is shut off.
•Make sure that when you service the machine or replace any spare parts on the compressor, it is
not pressurized and the power cable is disconnected from the power line.
•Regularly replace air filter cartridges only with genuine products from Nardi Compressori (tested
material).
•Drain the condensate regularly if the compressor has a manual drain. In the case of automatic
condensate drain check that this happens in periods not exceeding 10 minutes. Check daily the
operation by manually draining the condensate.
•When the compressor is not in use turn the power off, do not tug at the wire but use the plug to
unplug it. Make sure the power cable does not go against any sharp edges or bend at an angle
(in this case, it is recommended to use an extension).
•Periodically check the condition of the filling hoses (hoses for high pressure), especially near
the joints and if minor defects are present replace them. In any case, hoses must be replaced

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every 12 months.
•Check regularly the condition of the fittings.
•Do not repair damaged parts if you do not have original parts from Nardi Compressori.
•Do not modify the machine except with express written authorization from Nardi Compressori.
•In case of visible wear and tear of any components of the compressor, do not use the machine
until the worn parts are replaced with original parts. Check if there is additional damage to other
parts of the compressor.
•Before starting the machine, make sure no one is in contact with it.
•Be careful about any moving parts and do not get in contact with them.
•Do not change the ventilation system of the compressor and make sure it is positioned so as to
ensure the proper circulation of air.
•When starting the compressor, make sure that the sense of rotation of the compressor is equal
to that indicated by the arrow on the fan wheel cover.
2.0 GENERAL SAFETY CONSIDERATIONS:
1. The operator qualified to use the compressor, shall be aware of all the provisions and devices to control the
machine, tools, indicators and all the information on the various stickers/labels attached to the machine.
2. Always have first aid supplies, and a CO2 fire extinguisher. Make sure the extinguisher is fully charged and
ready to work at all times.
3. When operating the compressor, use appropriate protective clothing such as safety shoes, goggles, gloves and
so on.
4. Always disconnect the power cable when performing operations within the compressor, never perform any
operations on it with the power on while the compressor is in operation.

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3 WARRANTY AND ASSISTANCE
3.01 WARRANTY OF THE COMPRESSOR:
NARDI COMPRESSORI warrants the PACIFIC E23 – EG23 for a period of twelve months from the date of purchase,
indicated on the label fixed on the compressor.
During the time of production and testing a label is fixed on the machine showing that it is in conformity with the
standards of the European Union showing the CE marking. The warranty is voided if this label is by any reason
removed or altered in any way.
For the warranty to be valid, it is necessary that the own complies with the provisions of the contract and that the
compressor is used as specified by Nardi Compressori and is not been altered or modified in any way without the
agreement and authorization of NARD COMPRESSOR .
The warranty is not applicable when:
•The machine has not been used properly (as indicated in this manual).
•Non-guaranteed consumable materials and materials of periodic maintenance are used, particularly if used improperly.
•Non original NARD COMPRESSOR spare parts and replacements are used.
•Gases other than air are sucked/compressed or air with oxygen content higher than 21%.
The replacement of defective parts under warranty will be performed free of charge at Nardi Compressori’s location in
Montecchio Maggiore or at the location of our authorized dealers.
Repairs and replacements made by NARD COMPRESSOR or from an authorized dealer during the warranty period, do
not prolong the duration of the warranty thereof.
f the repair takes place outside Nardi Compressori, the cost of shipping of replacement parts is for account of the buyer
(replacement of defective parts must be performed only by technically trained personnel that NARD COMPRESSOR ’s
trained staff has assessed/trained and approved before the repair job is done).
f the replacement of the part requires a technician from NARD COMPRESSOR , travel expenses will be borne by the
buyer.
3.02 MAINTENANCE AND ASSISTANCE:
To order spare parts please contact or visit our dealers in your area. n case of difficulty in finding a spare part, contact
directly NARD COMPRESSOR . We are available for any queries or further information and we will put you in contact
with skillful technical staff to help you. f you need service or assistance, please contact us directly at:
NARDI COMPRESSORI
[e-mail] or by fax Nr. +39.0444.151922

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INSTALLATION
.01 UNPACKING AND HANDLING:
The compressor is shipped on pallets and is covered by a box and finally fastened with strapping. After unpacking it is
important to check if the compressor has suffered any damage during transit. f any damage is present, it is important to
inform the carrier and the seller as soon as possible but no later than 7 days after delivery.
The compressor PAC F C E23 – EG23 is designed to facilitate handling. n fact, if you look at the bottom, you will notice
it has an opening which allows it to be picked up using a forklift.
The compressor is mounted on anti-vibration mounts to avoid transmitting vibration to other things nearby. At any rate, it
must be positioned in a stable location. The pump unit is not resistant to the permanent exposure to marine corrosion. n
the event it comes into contact with corrosive agents it is recommended to clean the surface and protect it with anti-
corrosive spray. Be careful of any electrical parts at all times.
.02 PLACEMENT IN OPEN AIR:
n order to obtain good quality breathing air it is very important to position the compressor in open
places. The compressor must not suck the exhaust fumes of any internal combustion engine.
f the situation makes this impossible, it is necessary to use an extension for the aspiration of fresh air
to be set higher and as distant as possible from harmful gases/fumes and away from flammable
agents.
Check continuously wind direction and fumes coming from the engine.
The compressors must be positioned in a cool place protected from the weather.
Check Chapter 4.03 for the proximity of walls and roof.
f your compressor is driven by an internal combustion engine it is very important check often the wind
direction of the fumes and exhaust gases coming from the engine.
The compressors must be positioned in such a way that the fumes and exhaust gases are not sucked
by the compressor. f you are not sure about this it would be advisable to us an extension pipe to place
the air inlet at a save location. The compressor driven an a combustion engine must not be used in
closed environments.
.03 PLACEMENT IN A CLOSED ROOM AND MINIMUM REQUIREMENTS OF THE ROOM:
The compressor placed in a room, requires a continuous recirculation of fresh air.
nside the room there should be no liquid that can evaporate (solvents, additives, etc.). The
compressor room must be an absolutely “no smoking” area.
The compressor must draw unpolluted air and it is preferable to place it in the vicinity of open windows
during its operation so as to ensure recirculation of air both to ensure the quality of the air during the compression phase
as for the cooling of the compressor.
The minimum requirements of the room are the following:
•The temperature of the room must not be lower than 5° C and should not be higher than 45° C with proper
ventilation (see Table A).
•The room should be dry and clean, there should be no dust that can be sucked by the compressor.
•f in the same room two or more machines were placed make sure that the size is adequate (see Table C).
•Place the compressor preferably in the coldest area of the room. n the case of natural ventilation make sure that
the compressor is as close as possible to the fresh air intake and that it has the appropriate dimensions. n
addition to this there must be an opening in the upper part of the room that gives the possibility to dispose of hot
air, and also that it has the appropriate size (see Table A and Fig. 2). The two openings should not be on the
same wall, otherwise make sure to direct hot air upwards.

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Table A : Minimum room size with natural ventilation.
Volume a d
Height of the Room
Volume >50 m³
-
Height >2,3 m
Volume >100 m³
-
Height >3 m
Volume >200 m³
-
Height >4 m
ntake (A)
Outlet
(B)
ntake (A)
Outlet
(B)
ntake (A)
Outlet
(B)
0,95 m²
0,78 m²
0,63 m²
0,52 m²
0,25 m²
0,21 m²
Tab. A
Tab. B
Fig. 2
CAUT ON: The size of the openings depend on the heat sources and machinery placed in the room.
The dimensions indicated in Table A are for a compressor PAC F C 35 M and vary depending on the
volume and height of the room. The height of the room should not be lower than 2.3 meters and the
minimum distance from the top panel of the compressor to the roof must be 1 meter.
f in the same room two or more machines are placed you have to calculate the ventilation adequate for both machines
to work properly. Use the formula on Table C for your calculation.
Volume of Air ntake ( m² ) = Number of Compressors x Volume of Air Required for the Room ( m² ) x 1,6
Tab. C
f the room volume is lower than indicated, and vents for air circulation less than those indicated, it is
mandatory to insert artificial ventilation (see section 4.04)
.0 ROOM WITH ARTIFICIAL VENTILATION:
n the case of artificial ventilation it is important to check that the fresh air inlet is positioned at the bottom and the outlet
is positioned at the top in two different walls. n the case of extractor fan make sure that the flow rate is equal to or
greater than that indicated by calculation (see Table D).
Minimum air circulation ( m³/h ) = Capacity of the compressor ( l/min ) x 7,5
Tab. D
To ensure that there is sufficient ventilation and that the fan flow rate is adequate simply measure the speed of the
Mi imum Dista ce
from the Walls
C 0,10 m
D 0,50 m
E 1,00 m

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outgoing air (m / sec) and the section of the exhaust duct where the measurement is made (m²) and then calculate it
using the formula in Table E.
Air circulation ( m³/h ) =
Cross
Secti
o
n
al Area
of the Duct ( m² ) x Air Speed ( m/sec ) x 3600
Tab. E
To calculate the dimensions of the intake duct, it is recommended that the speed of the incoming air is not less than 5 m
/ sec and should not be more than 10 m / sec. We suggest using the formula in Table F to calculate the cross sectional
area of the duct with an air speed of 5 m / sec.
Cross Sectional Area of the Duct ( m² ) = Minimum
air circulation ( m³/h ) / 5 (
Air Speed m/sec
) x 3600
Tab. F
.05 INTAKE PIPE :
f you decide to place the intake of the compressor in a different location of that of the compressor itself, you can
connect a pipe to the intake of the compressor. t is important that this pipe has a diameter of 40 mm or more. Make sure
it is not plugged or bent so as to create a bottleneck. At its end it is recommended to put a filter.
Once connected check the time to refill cylinders to make sure that the compressor has not decreased the air delivery.
f this situation is present, check the pipe because the compressor may be going into depression and the causes can be:
•Pipe chokes
•Pipe is too long ( n this case the cross sectional area of the pipe should be increased).
.06 ELECTRIC LINE CONNECTION:
For the electrical installation you must follow these steps:
•n this manual you will find a diagram of the electrical control panel of the compressor that indicates how to
connect the compressor to the mains.
•Have an electrician check that the system is compliant and that it can support the maximum power draw of the
compressor shown under the CE label by NARD COMPRESSOR .
•We recommend installing a circuit breaker or fuse adapted to the power consumption of the motor.
•Check that the current reaches the voltage required by the compressor and that the plug that is used is
not undersized.
•CAUTION: When connecting the plug make sure that the fan of the compressor spins in the exact
direction of the arrow on the fan wheel cover. To reverse the rotation, just reverse two of the three
phases of the plug. Your compressor may have phase sequence problems (wrong sequence on phase
connection), in this case it will not turn on until the threads of the phase are inverted as indicated
above.
•Ensure that the ground wire is connected correctly to the plug and to the electrical system.
•f you change the mains cable make sure it is of the right size.

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5 QUICK STARTING GUIDE
WARNING: This QU CK START NG GU DE does not replace the Operator’s and Maintenance
Manual, but is intended to help the operator start the compressor, with quick and practical advice,
which should be followed with extreme caution and only after having read this manual in its entirety.
We remind you to perform periodic maintenance of the compressor, to avoid unwanted problems.
Getting Started:
-Place the compressor in the desired location
-Connect the condensate drain hose at the back of the compressor
-Check the oil level
-Check that the cartridge is inserted inside the filter housing
-Plug the power cable into the electrical outlet
-Turn the line switch on the electronic panel to the position - ON
-Pay attention to the direction of rotation of the electric motor f the plug was connected the wrong way the
electronic panel will show “SEQUENCE OR PHASE FA LURE” . n this case, invert two of the three wires on
the plug of the mains cable.
-To check if it is rotating in the correct direction: f the air comes out from the top of the compressor then it is
rotating in the right direction while if the air comes out from the bottom of the compressor then it is rotating in
the wrong direction.
Preparation for compressor with petrol engine:
- Place the compressor in the desired location
- Connect the condensate drain hose at the back of the compressor
- Check the oil level
- Check that the cartridge is inserted inside the filter housing
- Check that there is fuel in the tank (never refuel when the engine is hot)
- Turn the selector - ON
- Pull the starter rope if the compressor has manual start or turn the key if the engine has an electric starter.
- You can see the correct direction of rotation in the picture above. Make sure that air comes out from the top of the
compressor, and not from the bottom.
SEQUENCE
OR
PHASE FAILURE

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6 OPERATION AND USE
6.01 PREPARING TO START THE COMPRESSOR:
This compressor has been designed to compress ambient air. t is forbidden to modify the intake to
compress air other than ambient air. The compressor is constructed to compress air with a percentage
of oxygen content which must not exceed 21%. The use of the compressor to draw/compress air with a
higher content of oxygen or using other gases, can lead to breakage or to EXPLOS ON of the
compressor.
All compressors are tested by NARD COMPRESSOR before delivery, but for powering it on you need to follow these
safety steps:
•Before turning on the machine, all the operators of the compressor must read carefully the User’s and
Maintenance Manual.
•f the compressor has not been in operation for a period longer than twelve months we recommended changing
the oil, changing the intake filter and doing a checkup of the compressor by a technician.
•Test the condensate drain valve by pressing the button PURGE and test the emergency button on the electronic
control panel.
•Check that the oil level be at MAX (full). f the compressor is driven by a fuel engine also check the oil level of the
fuel engine reading the relevant manual. Before powering on the compressor, make sure the fuel tank is full.
Never refuel the engine’s fuel tank while the compressor is running.
•Every time you turn on the compressor follow these steps and if something is not working properly, do not turn on
the compressor, and run a maintain check or contact a technician to solve the problem.
6.02 STARTING THE COMPRESSOR:
Compressor driven by an electric motor with Automatic Control System:
This model is provided with an electronic control panel which controls the compressor in all its functions.
Before starting the compressor, follow all the steps in 6.01 above and after press the START button. Automatic
condensate drain cycles will begin to execute the opening of the valve every 6 minutes.
At maximum pressure, the machine will automatically shut down.
Press the STOP / emergency button to stop the compressor (once pressed the emergency button needs to be reset).

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6.03 USE OF FILLING VALVES:
CAUTION: Filling valves are very delicate components that allow you to connect the cylinders to the
compressor. Filling valves must be used with care, should not be hit, should not be cleaned with
solvents or harmful products and most importantly do not exceed the pressure for which they are
designed.
Normally 225 bar filling valves are attached to a compressor.
To attach the filling valve to the cylinder you must follow these steps:
•Make sure that the compressor is turned off and that the filling valve
and the cylinder valve are closed.
•Attach the filling valve to the cylinder.
•Open completely the cylinder valve.
•Open the filling valve.
•Start the compressor and fill the cylinder.
•At maximum pressure, close the cylinder valve and the filling valve.
•Blow-off any residual air between the cylinder and the filling valve and
disconnect the cylinder valve.
If you need to use the compressor at a pressure higher than 225 bar
Nardi Compressori can provide the material required to refill at higher
pressure with different filling valves, connectors and safety valves with
higher calibration.

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7 MAINTENANCE AND SERVICE
7.01 MAINTENANCE OPERATIONS:
Your compressor needs regular maintenance and service over time. In addition to stretching the life of
the machine, regular maintenance keeps it performing consistently and running efficiently.
During its work cycles the compressor requires regular maintenance that must be performed by
technicians trained by Nardi Compressori.
In case maintenance is not performed by our technicians, it is very important to follow the guidelines
of the maintenance checklist in all its parts.
In the maintenance checklist you will find all the maintenance operations scheduled that should be
performed based on the hours of operation of the compressor.
It is very important to register any and all maintenance operations performed on the compressor, in
order to keep a historical record of the parts that have been replaced, the date maintenance was done,
the hours of operation of the machine up to the date maintenance is done and the signature of the
qualified technician who serviced the machine.
IMPORTANT: All maintenance operations must be performed by the technical staff of
NARDI COMPRESSORI or by qualified technical staff.
IMPORTANT: All maintenance operations must be performed with the machine
switched off and the power cable disconnected.
7.02 LUBRICATION SYSTEM:
NARD compressors have two different lubrication systems:
•Splash Lubrication: This method of lubrication is done mechanically
with the movement of the connecting rod. With every rotation, a dipper,
at the bottom of the connecting rod is submerged in oil at high speed.
When the dipper emerges from the oil sump in the lower part of the
crankcase, the oil is thrown upward as droplets or fine mist, providing
adequate lubrication to the cylinders and the crankshaft.
•Force-feed Lubrication: This type of lubrication is done through an
oil gear pump that force-feeds oil and that is driven by the shaft. Oil
sucked from the sump is pumped to the piston of the last stage and
filtered by a micron filter. n its movement the oil pump sprays oil to all
moving parts.

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7.03 OIL:
Oil is a very important component for the life of the compressor over time. Nardi Compressori has studied in detail the
compressor so that it has a large capacity oil sump and oil filter. A magnet has been fixed on the case to attract all
metallic impurities that settle at the bottom of the case.
Nardi Compressori recommends using our oil that has been designed and tested specifically for this machine. The
compressor is usually supplied with oil to be used only with non-mixed air (21% O²).
Oil Characteristics:
•Low carbon deposit
•No carbonizing effect
•Good anticorrosive properties
•Physiological and toxicological suitability
7.0 OIL CHANGE:
The steps for changing the oil of the compressor are as follows:
•Make sure you have enough oil on hand to make the change.
•Switch the compressor on for 15 - 20 minutes to heat the
oil and make it more fluid.
•Remove the oil refill plug along with the oil breather extension.
•Remove the oil drain plug and before opening the tap make
sure you have a container to catch the exhausted oil.
•Close the tap and replace the oil drain plug.
•Pour the new oil slowly down the oil filler neck.
•Make sure that it reaches the maximum level (MAX).
•Do not exceed this level.
•Close the oil refill plug.
7.05 CHANGE TYPE OF OIL:
To avoid serious damage to the compressor when changing the type of oil, you must strictly follow the following steps:
• Follow the steps on the oil change Chapter 7.04.
• Change or clean all parts that have old oil.
• After 10 hours of operation of the compressor check if there is contamination.
• f the oil has been contaminated change it again.
• Do not mix different types of oil and always use the same type of oil.

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7.06 CHANGE OIL FILTER (Only for compressors with oil pump):
The steps for changing the oil filter are as follows (this is to be performed at every
oil change):
•Unscrew the nut of the fitting that holds the tube that
delivers the oil to the last cylinder using a 14mm wrench
and disconnect it.
•Unscrew the four screws of the oil filter housing using a
Phillips screwdriver.
•Lift the oil filter housing cap with the tube attached to it
and remove the filter.
•Check if it is necessary to change the O-ring on the oil
filter house housing.
•Close everything, turn on the compressor and make sure
there are no oil leaks.
7.07 ALARM OIL LEVEL:
When the oil level drops below the minimum threshold, an alarm (visible and
acoustic), is triggered, with a message on the display that shows the scarcity of oil in
the compressor
.
t is necessary to do a top up of oil to the compressor, as described above, up to the maximum level. Press
"RESET" on the front of the electronic control panel, so as to reset the alarm and then "START" to start the compressor.
n the event that, within a short time, the oil level alarm is triggered again, you need to call a technician to check any
possible anomaly.
7.08 CHANGE INTAKE FILTER:
The filter traps any impurities present in the environment.
t must be replaced at regular intervals as indicated in the maintenance checklist.
t should not be washed but replaced.
The steps for changing the filter are as follows:
• Release the latches on the lid and remove the filter cartridge.
• Clean with a damp cloth inside the filter housing and the cap.
nsert the new filter cartridge and close the lid.
OIL LEVEL