Nuvair Open Horizontal Electric MCH30 User manual

User Manual
Open Horizontal Electric MCH22
Open Horizontal Electric MCH30
Open Horizontal Electric MCH36
&
Open Vertical Electric MCH22
Open Vertical Electric MCH30
Open Vertical Electric MCH36
Rev. 03.19

Nuvair Open Electric Models
Nuvair Page 1www.Nuvair.com

Nuvair Open Electric Models
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If you have any questions on this equipment please contact Technical Support at:
Nuvair
1600 Beacon Place
Oxnard, CA 93033
Phone: [phone]
Fax: [phone]
Email: [e-mail]
Hours: Monday through Friday
8:00 AM to 5:00 PM PST USA
This User Manual contains important safety information and should always be available to
those personnel operating this equipment. Read, understand, and retain all instructions
before operating this equipment to prevent injury or equipment damage.
Every effort was made to ensure the accuracy of the information contained within. Nuvair, however,
retains the right to modify its contents without notice.
Under Nuvair’s system of continuous improvement, certain components may be updated or changed
as higher quality or more efficient parts and assemblies become available.
Nuvair will make every effort to update manuals as parts and functional aspects change. However,
the look or location of components on your product may differ from those in this manual if
improvements have been made that do not affect functionality or operational procedures.
Units pictured may also be equipped with different options than those on your product. In this case,
the basic operational and maintenance guidelines will still apply.
If you have problems or questions after reading the manual, stop and call Nuvair at [phone]
for information.

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Table of Contents
Introduction
1.0 Introduction……………………………………………………………................................
1.1 Required Operator Training………………..……………..……………………….
1.2 Important Information for the User…………..……………..……………………..
1.3 Foreword……………..…………….………………………………………………...
1.4 Assistance ……………………………….…………………………………………..
1.5 Responsibility…………………………………...…………………………………...
1.6 Purpose of the Machine…………………………………………………………….
1.7 Where the Compressor may be used………………………………….................
1.8 Running and Testing the Compressor……………………………………………
2.0 Safety Warnings……………………………………………………………………………..
3.0 Safety and Operation Precautions…………………………………………………………
4.0 General Description of the Compressor…………………………………………………..
5.0 System Components………………………………………………………………………..
6.0 Compressor Specifications ………………………………………………………………..
6.1 Unpack and Installation……………………………………………………….………
6.2 Electrical Connection ……………………………………………………..………..…..
7.0 Checks to be run at the start of each working day ………………………………………
7.1 Lubricating oil check ………………………………………………….…………….
7.2 Check the refill hoses are in good condition ……………….……………………
7.3 Storing technical documentation…………………………………………………
8.0 Gauge Panel………………………………………………………………..………………..
9.0 Overpressure Safety Valves ……………………………………………..………………..
10.0 Bottle Refill ……………………………………………………………………..…….………
11.0 Maintenance …………………………………………………………………………..……..
11.1 Forward……………………………………………………………………….………
11.2 General…………………………………………………………………………..……
11.3 Unscheduled Work………………………………………………………....………
11.4 Scheduled Maintenance Table …………………………………………….……..
11.5 Troubleshooting ……………………………………………………………………
11.6 Checking and Changing the Lubricating Oil and Filter ………………………..
11.7 Checking the Oil Level……………………………………………………………..
11.8 Changing the Lubricating Oil and Filter …………………………………………
11.9 Tightening Torque Value ………………………………………………………….
11.10 CO and Moisture Indictor …………………………………………………………
11.11 Changing the Air Intake Filter ……………………………………………………
12.0 Transmission Belt ………………………………………………………………………….
12.1 Checking the Transmission Belt ………………………………………….……..
13.0 HP Compressor Filtration Active Carbon Filters / Molecular Sieve ………………….
13.1 Temperature effect on filter life ……………………………………………………
13.2 Condensate Discharge …………………………………………………………….
14.0 Power Requirements ……………………………………………………………………….
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Table of Contents
14.1 Amperage Load for the System…………………………………………….
14.2 Rotation Check………………………………………………………………
15.0 Storage………………………………………………………………………………..
15.1 Stopping the Machine for a Brief Period………………………………….
15.2 Stopping the Machine for a Long Period………………………………….
16.0 Dismantling and Putting the Compressor Out of Service………………………...
16.1 Waste Disposal………………………………………………………………
16.2 Dismantling the Compressor……………………………………………….
17.0 Instructions for Emergency Situations…………………………………………….
17.1 Fire…………………………………………………………………………….
18.0 Maintenance Register………………………………………………………………
18.1 Customer Service……………………………………………………………
18.2 Scheduled Maintenance……………………………………………………
18.3 Using the Compressor Under Heavy Duty Conditions……………………
18.4 Nuvair Customer Care Contact……………………………………………
19.0 Spare Parts List……………………………………………………………………...
20.0 Service Record Log…………………………………………………………………
21.0 Appendix…………………………………………………………………………….
Supply and Breathing Air Specifications
Nuvair System Compressor Warranty Info
Additional Record of Changes
Notes
Separate Manuals Included:
Compressor Parts Manual
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1.0 Introduction
This manual will assist you in the proper set-up, operation and maintenance of the Nuvair Open
Electric compressor packages. Be sure to read the entire manual. Throughout this manual we will
use certain words to call your attention to conditions, practices or techniques that may directly affect
your safety. Pay particular attention to information introduced by the following signal words:
Indicates an imminently hazardous situation which, if not avoided, will result in serious injury
or death.
Indicates a potentially hazardous situation which, if not avoided, could result in serious
personal injury or death.
Indicates a potentially hazardous situation which, if not avoided, may result in minor or
moderate injury. It may also be used to alert against unsafe practices.
Notifies people of installation, operation or maintenance information which is important but
not hazard-related.
1.1 Required Operator Training
This manual must be read carefully and entirely
•All compressor operators / maintenance personnel must read this entire manual with
due care and attention and observe the instructions/information contained herein.
•Company owners ensure that the operator has the required training for operation of
the compressor and that he/she has read the manual.
1.2 Important Information for the User
The information/instructions for compressor use contained in this manual concern the
Nuvair compressors: Open Horizontal Electric, Open Vertical Electric
The instruction manual must be read and used as follows:
•Read this manual carefully; treat it as an essential part of the compressor
•The instruction manual must be kept where it can readily be consulted by
compressor operators and maintenance staff
•Keep the manual for the working life of the compressor
•Make sure updates are incorporated in the manual
•Make sure the manual is given to other users or subsequent owners in the event of
resale
•Keep the manual in good condition and ensure its contents remain undamaged
•Do not remove, tear or re-write any part of the manual for any reason
•Keep the manual protected from damp and heat
•If the manual is lost or partially damaged and its contents cannot be read it is
advisable to request a copy from the manufacturer

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1.3 Foreword
The regulations/instructions for use contained in this manual constitute an essential
component of the supplied compressor.
These regulations/instructions are intended for an operator who has already been
trained to use this type of compressor. The contained information is necessary and
essential to efficient and proper use of the compressor.
Hurried or careless preparation leads to improvisation, which is the cause of accidents.
Before beginning work, read the following suggestions carefully:
1) Before using the compressor, gain familiarity with the tasks to be completed and the
admissible working position
2) The operator must always have the instruction manual to hand
3) Plan all work with due care and attention
4) You must have a detailed understanding of where and how the compressor is to be
used
5) Before starting work make sure that safety devices are working properly and that
their use is understood; in the event of any doubts do not use the compressor
6) Observe the warnings given in this manual with due care and attention
7) Constant and careful preventive maintenance will always ensure a high level of
safety when using the compressor. Never postpone repairs and have them carried out
by specialized personnel only; use only original spare parts
1.4 Assistance
Nuvair technicians are at your disposal for all routine/unscheduled maintenance work. Please
forward your request for assistance to Nuvair by sending a fax or e-mail to:
Phone: [phone]
Fax: [phone]
Email: [e-mail]
1.5 Responsibility
Nuvair considers itself exonerated from any responsibility or obligation regarding injury or
damage caused by:
•Failure to observe the instructions contained in this manual that concern the running,
use and maintenance of the compressor
•Violent actions or incorrect maneuvers during use or maintenance of the compressor
•Modifications made to the compressor without prior written authorization from Nuvair
•Incidents beyond the scope of routine, proper use of the compressor
Maintenance and repairs must only be carried out using original spare parts and qualified
technicians. Nuvair cannot be held liable for any damages caused by failure to observe this
rule. The compressor is guaranteed as per the contractual agreements made at the time of
sale. Failure to observe the regulations and instructions for use contained in this manual shall
render the warranty null and void.

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1.6 Purpose of the Machine
This high pressure compressor has been designed and built for the purpose of producing
breathing air by drawing it from the surrounding environment. The surrounding environment air
must be free from any harmful fumes or contaminates. The air is pulled through an intake air
filter, compressed, and passed through breathing air filtration before it is stored in bottles
constructed to contain air at high pressure. The compressor can also be used for the pumping
of gases:
•Nitrogen
•Helium
•Nitrox mixtures up to 40%
Any other use is inappropriate. The manufacturer cannot be held liable for any personal injury
or damage to objects / the machine itself caused by improper use.
•Use only tested, certified bottles: do not exceed the working pressure indicated on
them.
•Drain air from tanks before filling when tanks have not been used for an extended
period of time.
•Use the compressor in areas free from dust, risk of explosion, corrosion and fire.
•Improper use could have serious consequences for the user.
•Do not disconnect the hose from the fittings or the clamp when under pressure.
•Change the air purification filters regularly as described in section 13.0.
•Drain the condensate regularly as illustrated in section 13.2: Condensate Discharge.
•The power must be disconnected and locked out before carrying out any cleaning or
maintenance tasks.
•Never pull a plug out by tugging the cord. Make sure the cord is not bent at a sharp
angle and that it does not rub against any sharp edges. Use of extensions is not
advised.
•Never operate the compressor when the power cord is damaged
•All routine and unscheduled maintenance tasks must be carried out with the
compressor at a standstill, the electrical power supply disconnected or locked out and
all lines are depressurized.
•After switching off the compressor wait about 30 minutes before carrying out any
maintenance tasks so as to prevent burns.
•The high pressure flex hose (also called the fill whip) that connects the compressor to
the bottle must be in good condition, especially in the areas near the fittings. The
plastic sheath that covers the hose must not show any signs of abrasion, otherwise
moisture could get in and corrode the steel braid thus weakening it. The hose must be
changed periodically (yearly) or when it shows signs of wear. Failure to observe this
rule could seriously endanger the users’ safety. Make sure the minimum bending
radius of the hose is no less than 10 inches (250 mm).

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To ensure maximum working efficiency, Nuvair has constructed the compressor with carefully
selected components and materials. The compressor is tested prior to delivery. Continued
compressor efficiency over time will also depend on proper use and maintenance as per the
instructions contained in this manual.
All the components, connections and controls used in its construction have been designed and built
to a high degree of safety so as to resist abnormal strain or in any case a strain greater than that
indicated in the manual. Materials are of the finest quality; their introduction and storage in the
company and their utilization in the workshop are controlled constantly so as to prevent any damage,
deterioration or malfunction.
Before carrying out any work on the compressor each operator must have a perfect
understanding of how the compressor works, know how to use the controls and have read the
technical information contained in this manual.
•It is forbidden to use the compressor under conditions or for purposes other than those
indicated in this manual and Nuvair cannot be held liable for breakdowns, problems or
accidents caused by failure to observe this rule.
•Check that the fittings provide a proper seal by wetting them with soapy water: Stop the
compressor and eliminate any leaks immediately when detected.
•Do not attempt to repair high pressure tubes by welding them or while the compressor
is running.
•Do not empty the bottles completely, not even during winter storage as this practice
allows damp air to get in and eventually corrode the bottle.
•It is forbidden to tamper with, alter or modify, even partially, the systems and equipment
described in this instruction manual, especially as safety guards and safety symbols
are concerned.
•It is also forbidden to carry out work in any way other than that described or to neglect
the illustrated safety tasks.
•The safety information and the general information given in this manual are highly
important.

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1.7 Where the Compressor may be used
This high pressure compressor has been designed and built for the purpose of producing
breathing air by drawing it from the surrounding environment. The surrounding environment air
must be free from any harmful fumes or contaminates. The air is passed through an intake air
filter, compressed and run through breathing air filtration before it is stored in bottles constructed
to contain air at high pressure. The compressor must only be used in environments having the
characteristics described in the following table.
Area of Machine Use: Essential Data Table
Temperature ambient
Min. +41°F - Max. +113°F (Min. +5°C - Max. +45°C)
Air humidity
(%)
Maximum 80%
rain
Tolerated Weather Conditions
hail
none
snow
Max tilt angle (bank)
(%)
6%
Check that the area in which the compressor is to be positioned is adequately ventilated: good air
exchange (more than one window) with no dust and no risk of explosion, corrosion or fire. If
ambient temperatures exceed 113°F (45°C) air conditioning will be required. Make sure that
lighting in the area is sufficient to identify every detail (such as the writing on the info
plates/stickers); use artificial lighting where daylight on its own is insufficient.
•When Pumping Nitrox, Ambient temperature Maximum is 100°F and Maximum fill pressure
is 3600 psi.
1.8 Running and Testing the Compressor
Each compressor is carefully ran and tested prior to delivery. A new compressor must
nevertheless be used with caution during the first 5 working hours so as to complete proper
breaking in of its components. If the compressor is subject to an excessive workload during initial
use, its potential efficiency will be prematurely compromised and functionality soon reduced.
During the breaking in period proceed as follows:
•After starting the unit, let the compressor run un-loaded for 5-6 minutes.
After the first 25 hours carry out in addition to the scheduled maintenance the following tasks:
•Change the compressor oil
•Change the oil filter
•Check and adjust nuts and bolts
When changing the oil filter, inspect the filter element and check for any deposits. If metal or
carbon deposits are present, locate the source before restarting the compressor.

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2.0 Safety Warnings
Nuvair has taken extreme care in providing you with the information you will need to operate this
system. However, it is up to you to carefully read this manual and make the appropriate decisions
about system safety.
This equipment is used to provide breathing Air or Nitrox for the purpose of life support. Read
this manual in its entirety. Failure to heed the warnings and cautions contained in this
document may result in severe injury or death.
The equipment you will be using to compress Air or Nitrox will expose you to both low and
high-pressure gas. Gas, even under moderate pressures, can cause extreme bodily harm.
Never allow any gas stream to be directed at any part of your body.
Any pressurized hose can cause extreme harm if it comes loose or separates from its restraint
(or termination) while under pressure and strikes any part of your body. Use appropriate care
in making and handling all gas connections.
Do not use any form of mineral oil or synthetic lubricant not rated for the compressor in this
system. Use only the recommended Compressor Lubricant. Never mix the Compressor
Lubricant with other lubricants. The use of improper lubricants can lead to fire or explosions,
which may cause serious personal injury or death.

Nuvair Open Electric Models
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3.0 Safety And Operation Precautions
Because a compressor is a piece of machinery with moving and rotating parts, the same precautions
should be observed as with any piece of machinery of this type where carelessness in operations or
maintenance is hazardous to personnel. In addition to the many obvious safety precautions, those
listed below must also be observed:
1) Read all instructions completely before operating any compressor or Nitrox System.
2) For installation, follow all local electrical and safety codes, as well as the National Electrical Code
(NEC) and the Occupational Safety and Health Administration (OSHA) standards.
3) Electric motors must be securely and adequately grounded. This can be accomplished by wiring
with a grounded, metal-clad raceway system to the compressor starter; by using a separate
ground wire connected to the bare metal of the motor frame; or other suitable means.
4) Protect all power cables from coming in contact with sharp objects. Do not kink power cables and
never allow the cables to come in contact with oil, grease, hot surfaces, or chemicals.
5) Make certain that power source conforms to the requirements of your equipment.
6) Pull main electrical disconnect switch and disconnect any separate control lines, if used, before
attempting to work or perform maintenance. “Tag Out” or “Lock Out” all power sources.
7) Do not attempt to remove any parts without first relieving the entire system of pressure.
8) Do not attempt to service any part while System is in an operational mode.
9) Do not operate the System at pressures in excess of its rating.
10)Do not operate compressor at speeds in excess of its rating.
11)Periodically check all safety devices for proper operation. Do not change pressure setting or
restrict operation in any way.
12)Be sure no tools, rags or loose parts are left on the Compressor System.
13)Do not use flammable solvents for cleaning the Air Inlet Filters or elements and other parts.
14)Exercise cleanliness during maintenance and when making repairs. Keep dirt away from parts by
covering parts and exposed openings with clean cloth or Kraft paper.
15)Do not operate the compressor without guards, shields, and screens in place.
16)Do not install a shut-off valve in the compressor discharge line, unless a pressure relief valve, of
proper design and size, is installed in the line between the compressor unit and shut-off valve.
17)Do not operate in areas where there is a possibility of inhaling carbon monoxide, carbon dioxide,
nitrogen, or flammable or toxic fumes.
18)Be careful when touching the exterior of a recently run electric, gasoline, or diesel motor - it may
be hot enough to be painful or cause injury. With modern motors this condition is normal if
operated at rated load - modern motors are built to operate at higher temperatures.
19)Inspect unit daily to observe and correct any unsafe operating conditions found.
20)Do not “play around” with compressed air, or direct air stream at body, as this can cause injuries.
21)Compressed air from this machine absolutely must not be used for food processing or breathing
air without adequate downstream filters, purifiers and controls and periodic air quality testing.
22)Always use an air pressure-regulating device at the point of use, and do not use air pressure
greater than marked maximum pressure.
23)Check hoses for weak or worn conditions before each use and make certain that all connections
are secure.
The user of any compressor or Nitrox System manufactured by Nuvair is hereby warned that failure to
follow the preceding Safety and Operation Precautions can result in injuries or equipment damage.
However, Nuvair does not state as fact or does not mean to imply that the preceding list of Safety and
Operation Precautions is all-inclusive, and further that the observance of this list will prevent all
injuries or equipment damage.

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4.0 Description of the Compressor
Nuvair MCH36 Open Horizontal
shown without front cover
Optional Skids with Fork Slots
Auto Drain
Condensate Catch
Document Holder
Electrical Box
Triple Auto Drains
Optional Coltri
MCH36 Tropical Plus
Compressor
Optional Certified Lifting Eyes

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Optional 400V Transformer
Watertight
On/Off Switch
Fill Whip
Connections
Visual CO
Monitor
Optional Frame
Certification Plaque
Auto Drain
Test/Purge Button
Hour Meter
Optional Block
Heater On/Off
Emergency Stop
Top of Electrical Box
Optional Triple
Filtration
(Good for 90,000 CFM)
Filters:
(2x) 65677 Absorbent
Filter
(1x) 65247 Triplex
Filter

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(Pictured is the Nuvair Open Vertical MCH22 Tropical Plus Electric)
HP Filter
Replacement
Filter:
X65247
Condensate Collection
Container Attached to Auto
Drains. (Drain Daily)
Auto Drains and
Manual Drains (3x)
Compressor
Oil Level
Compressor Oil Drain
Motor Starter &
Electrical Box
HP Air Intake
Oil Fill
Stage Pressure
Gauges
1,2,3,4
Oil
Pressure
Gauge
Fill
Pressure
Gauge
HP Air
Outlet
On/Off
Switch
Rotation
Sticker
Always Check
Before Operating
Hour
Meter

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5.0 System Components
Coltri MCH30/MCH36 High Pressure Air Compressor
4 Cylinder, 4 stage, Air Cooled
Visual CO / Moisture Indicator
Hour Meter
Electric Motor: 220V/230V or 440V/460V, 3 Phase, 50 or 60 Hz
NEMA 4 box
Interstate Pressure Gauges
3 Condensate Separators
Large Stainless Steel Interstage Cooling Tubes
Low Pressure Oil Pump with Filter
Oil Level Sight Gauge and Oil Pressure Gauge
Automatic Condensate Drains
Load less Start
Low Oil Shutdown Switch
High Temp Switch set at 350° F
Lubricant:
Nuvair 455 Food Grade Lubricant (standard)
Nuvair 751 Diester Based Lubricant (optional)
Aluminum Frame with isolation vibration mounts
(Stainless Steel or Powder-Coat options available)
Certified Lifting Eyes

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6.0 Compressor Specifications
Ambient room temperature should never exceed 113oF (45oC) during operation of the
Compressor System. Operation at higher temperatures may lead to system damage and
malfunction.
6.1 Unpack and Installation
1) Please read all information supplied before physically installing the Compressor System.
2) Unpack the system and remove from the pallet. Visually inspect the system to make sure there has
been no damage during shipping. If damaged, please call Nuvair to file a damage report. Please
take photos and supply detailed information about the damage.
3) Place the system in a permanent location allowing a minimum spacing of 36” from adjacent walls.
Select a location where ambient room temperature is a minimum of +41°F to a maximum +113°F
(°C Min. +5° - Max. +45°).
4) Make sure the installation space is well ventilated.
MCH 22
MCH 30
MCH 36
Charging Rate
Filling an 80 cu ft tank from 500 psi
15.8 SCFM (447 L/min) 20.4 SCFM (577 L/min) 27 SCFM (764 L/min)
Electrical Power Requirements
208-220 V / E1 / 60 Hz
208-230 V / E3 / 60 Hz
380-415 V / E3 / 50 Hz
440-480 V / E3 / 60 Hz
46 Amps 10 hp (7.4 kW)
28 Amps 10 hp (7.4 kW)
17 Amps 10 hp (7.4 kW)
17 Amps 10 hp (7.4 kW)
N/A
31 Amp 15 hp (11KW)
18 Amp 15 hp (11KW)
16 Amp 15 hp (11KW)
N/A
48 Amp 20 hp (15KW)
29 Amp 20 hp (15KW)
25 Amp 20 hp (15KW)
Max Operating
Pressure
Up To 6000 psi (414 bar)
Pumping Unit RPM
880 1100 1300
Number of Stages
4 4 4
Lubrication Pressure Lubrication, capacity 4 L
Oil Pressure 58 psi,4 bars
21.75 psi, 1.5 bars
14.5 psi, 1 bar
cold
routine use
minimum pressure
Air Quality Grade E

Nuvair Open Electric Models
Nuvair Page 17 www.Nuvair.com
a
6.2 Electrical Connection
•Please read all information supplied before Connecting Electricity to the Compressor System.
•You should hire a licensed electrician to install any electric compressors purchased from Nuvair.
•The compressor is delivered with raw leads ready to be installed into a junction box.
•In the event a plug is needed, Nuvair recommends that the licensed electrician doing the install
determines the plug necessary.
•Make sure your electrician follows approved and compliant standards
for your location.
7.0 Checks to be run at the start of each working day
Inspect the exterior of the compressor (couplings, pipes, pneumatic
components etc.) and check for any oil leaks. Replace parts where
necessary or contact Nuvair.
7.1 Lubricating oil level check
Check that the level of lubricating oil (a) is within acceptable limits (i.e.
between min. and max.). Note that an excessive quantity of oil can leave
deposits on the valves while too low a level prevents proper lubrication and could cause engine
seizure. If the oil level is not within the minimum and maximum limits top up or drain as described in
section 11.8 Changing the lubricating oil and filter”.
7.2 Check that the refill hoses are in good condition
Inspect the refill hoses and make sure there are no cuts, holes,
abrasions, leaks etc. If necessary replace with new hoses.
7.3 Storing technical documentation
The use and maintenance manual and its appendices must be stored
carefully and must always be kept where they can be accessed easily
for immediate review.
This User Manual contains important safety information and should always be available to
those personnel operating this equipment. Read, understand, and retain all instructions
before operating this equipment to prevent injury or equipment damage.

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8.0 Gauge Panel
1st stage pressure gauge (1)
The (1) gauge indicates the pressure inside the 1st compression stage. If the Pressure is not
between 45 psi (3 bar) and 60 psi (4 bar) switch off the compressor and contact Nuvair.
2nd stage pressure gauge (2)
The (2) gauge indicates the pressure inside the 2nd compression stage. If the Pressure is not
between 230 psi (16 bar) and 290 psi (20 bar) switch off the compressor and contact Nuvair.
3rd stage pressure gauge (3)
The (3) gauge indicates the pressure inside the 3rd compression stage. If the Pressure is not
between 940 psi (65 bar) and 1200 psi (80 bar) switch off the compressor and contact Nuvair.
4th stage pressure gauge / Working Pressure Gauge (4)
This (4) gauge indicates the pressure as it exits the compressor. If the Pressure fails to reach
the pressure set on the pressure switch, switch off the compressor and contact Nuvair.
Fill Pressure Gauge
Pressure at the fill whips.
Oil Pressure Gauge
If No Oil Pressure or High Pressure readings occur, switch off compressor and contact Nuvair.
9.0 Overpressure Safety Valves
Each stage of the compressor is equipped with an overpressure relief valve to ensure that the
unit will not be damaged in the event that the pressure shutoff switch fails to work. The final
stage valve is pre-adjusted to 3200 psi (225 bar), 4300psi (300bar), 4700psi (330bar) or 6000
psi (425 bar) dependent on the final pressure specified when the unit was ordered.
Tampering with the safety valve to increase the pressure setting is strictly forbidden.
Tampering with the safety valve can seriously damage the compressor, cause serious injury
to personnel and renders the warranty null and void.
Oil Pressure
58 psi (4 Bar)
21.75 psi (1.5 Bar)
14.5 psi (1 Bar)
Cold
Routine Use
Minimum Pressure
Oil
Pressure
Gauge
Fill
Pressure
Gauge

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10.0 Bottle Refill
To refill the bottles proceed as follows:
- Fit the hose connector (a) to the tank valve (b)
- Screw in the fixing knob (c) until it is completely
tightened
- Check that the bleed valve (f) is closed by
rotating it clockwise
- Open the valve (d) by rotating it counter clockwise
- Open the valve (e) by rotating it counter clockwise
- Start the compressor by pressing the on button (g)
- When the refill has been completed the compressor
shuts down automatically
- Close valves (d) and (e) by rotating them clockwise
- Open the bleed valve (f) by rotating it counter clockwise
until all the residual air in the fitting has been expelled
- Unscrew the fixing knob (c) by rotating it counter clockwise
- Disconnect the bottle coupling.
Options for this compressor that may or may not be installed are:
•Pressure Switch: Shuts down the compressor at a set pressure
•Dial-A-Pressure Switch: Allows the operator to dial in a pressure for the compressor to
automatically shut off at when the pressure is reached during the filling process.
During refill the operator must be in the work area. It is advisable, during the bottle refill
phase, to submerge the bottles in cold water so as to reduce the drop in pressure that
accompanies cooling of the bottle.
During bottle refill those not involved in the refill procedure must maintain a safety distance of
at least 9 feet (3 meters). Also, it is forbidden to disconnect the hoses from the fittings or the
refill tap while the machine is under pressure.
Should bottles show evident signs of internal or external corrosion, do not refill them even if
they have been tested.
Use only tested bottles (as proven by a test stamp and/or certificate). The working and bottle
refill pressures are shown on the bottles themselves. It is forbidden to refill them at a pressure
greater than that indicated.
Fill Whip connection
points on compressor
G