Doosan 9/270 User manual

This manual contains
important safety information
and must be made available to
personnel who operate and
maintain this machine.
22839567 _en_E_10/15
9/270, 9/300, 12/235, 17/235, 21/215
9/270HA, 9/300HA, 10/300HA, 12/235HA, 17/235HA, 21/215HA
OPERATION AND MAINTENANCE MANUAL
Original Instruction
9/270, 9/300 SERIAL No : 893000 ->
10/300, 12/235
17/235, SERIAL No : 881500 ->
21/215

Machine models represented in this manual may be used in various locations world-wide. Machines sold and
shipped into European Union Territories require that the machine display the CE Mark and conform to various
directives. In such cases, the design specification of this machine has been certified as complying with EC
directives. Any modification to any part is absolutely prohibited and would result in the CE Certification and marking
being rendered invalid. A declaration of that conformity follows:
SAMPLE

CONTENTS & ABBREVIATIONS 1
9/270, 9/300, 12/235, 17/235, 21/215, 9/270HA, 9/300HA, 10/300HA, 12/235HA, 17/235HA, 21/215HA
1 CONTENTS
2 FOREWORD
3 WARRANTY
6 ISO SYMBOLS
9 SAFETY
11 GENERAL INFORMATION
Dimensions
Data
14 OPERATING INSTRUCTIONS
Commissioning
Prior to starting
Starting
Stopping
Emergency stopping
Re-starting
Monitoring during operation
Decommissioning
23 MAINTENANCE
Routine maintenance
Lubrication
Speed & pressure regulation
Torque settings table
Compressor lubrication
35 MACHINE SYSTEMS
Electrical system
Piping & instrumentation system
39 FAULT FINDING
41 OPTIONS
43 ENGINE INSTRUCTION MANUAL
62 PARTS ORDERING
ABBREVIATIONS & SYMBOLS
#### Contact the company for serial number
->#### Up to Serial No.
####-> From Serial No.
*Not illustrated
†Option
WDG Generator option
AR As required
HA High ambient machine
S.R.G. Site running gear
H.R.G. High speed running gear
bg Bulgarian
cs Czech
da Danish
de German
el Greek
en English
es Spanish
et Estonian
fi Finnish
fr French
hu Hungarian
it Italian
lt Lithuanian
lv Latvian, Lettish
mt Maltese
nl Dutch
no Norwegian
pl Polish
pt Portuguese
ro Romanian
ru Russian
sk Slovak
sl Slovenian
sv Swedish
zh Chinese

2 FOREWORD
9/270, 9/300, 12/235, 17/235, 21/215, 9/270HA, 9/300HA, 10/300HA, 12/235HA, 17/235HA, 21/215HA
The contents of this manual are considered to be proprietary and
confidential to and should not be reproduced without the prior written
permission of the company.
Nothing contained in this document is intended to extend any
promise, warranty or representation, expressed or implied, regarding
the products described herein. Any such warranties or other terms and
conditions of sale of products shall be in accordance with the standard
terms and conditions of sale for such products, which are available
upon request.
This manual contains instructions and technical data to cover all
routine operation and scheduled maintenance tasks by operation and
maintenance staff. Major overhauls are outside the scope of this
manual and should be referred to an authorised service department.
The design specification of this machine has been certified as
complying with EC directives. As a result:
a) Any machine modifications are strictly prohibited, and will invalidate
EC certification.
b) A unique specification for USA/Canada is adopted and tailored to
the territory.
All components, accessories, pipes and connectors added to the
compressed air system should be:
• of good quality, procured from a reputable manufacturer and,
wherever possible, be of a type approved by the company.
• clearly rated for a pressure at least equal to the machine maximum
allowable working pressure.
• compatible with the compressor lubricant/coolant.
• accompanied with instructions for safe installation, operation and
maintenance.
Details of approved equipment are available from the company
Service departments.
The use of repair parts / lubricants / fluids other than those included
within the approved parts list may create hazardous conditions over
which the company has no control. Therefore the company cannot be
held responsible for equipment in which non-approved repair parts are
installed.
The company reserves the right to make changes and
improvements to products without notice and without incurring any
obligation to make such changes or add such improvements to
products sold previously.
The intended uses of this machine are outlined below and
examples of unapproved usage are also given, however the company
cannot anticipate every application or work situation that may arise.
IF IN DOUBT CONSULT SUPERVISION.
This machine has been designed and supplied for use only in the
following specified conditions and applications:
• Compression of normal ambient air containing no known or
detectable additional gases, vapours. or particles
• Operation within the ambient temperature range specified in the
GENERAL INFORMATION section of this manual.
The use of the machine in any of the situation types listed in
table 1:-
a Is not approved,
b) May impair the safety of users and other persons, and
c) May prejudice any claims made against the company.
The company accepts no responsibility for errors in translation of
this manual from the original English version.
©COPYRIGHT 2011
DOOSAN COMPANY
TABLE 1
Use of the machine to produce compressed air for:
a) direct human consumption
b) indirect human consumption, without suitable filtration and purity
checks.
Use of the machine outside the ambient temperature range
specified in the GENERAL INFORMATION SECTION of this
manual.
This machine is not intended and must not be used in potentially
explosive atmospheres, including situations where flammable
gases or vapours may be present.
Use of the machine fitted with non approved components /
lubricants / fluids.
Use of the machine with safety or control components missing or
disabled.

WARRANTY 3
9/270, 9/300, 12/235, 17/235, 21/215, 9/270HA, 9/300HA, 10/300HA, 12/235HA, 17/235HA, 21/215HA
The company, through its distributor, warrants that each item of
equipment manufactured by it and delivered hereunder to the initial
user will be free of defects in material and workmanship for a period of
three (3) months from initial operation or six (6) months from the date
of shipment to the initial user, whichever occurs first.
With respect to the following types of equipment, the warranty period
enumerated below will apply in lieu of the foregoing warranty period.
A. Aftercoolers - The earlier of nine (9) months from date of
shipment to or six (6) months from start up by initial user.
B. Portable Compressors, Portable Generator Sets -
9 Kva through to 550 Kva, Portable Light Towers and Air
Dryers - The earlier of twelve (12) months from shipment to or the
accumulation of 2,000 hours of service by the initial user.
2.5 Kva Through to 8 Kva - The earlier of twelve (12) months
from shipment to or the accumulation of 2,000 hours of operation
by the initial user.
The company will provide a new part or repaired part, at it’s sole
discretion, in place of any part which is found to be defective in
material or workmanship during the period described above.
Labor cost to replace the part is the responsibility of the initial
user.
C. Portable Compressor Air Ends - The earlier of twenty-four (24)
months from shipment to or the accumulation of 4,000 hours of
service by the initial user. For Air Ends, the warranty against
defects will include replacement of the complete Air End, provided
the original Air End is returned assembled and all original seals
are intact.
C1. Portable Compressor Airend Limited Extended Warranty -
The earlier of sixty (60) months from shipment to or the
accumulation of 10,000 hours of operation by the initial user. This
extended warranty is limited to defects in design or defective
material or workmanship in rotors, housings, bearings and gears
and provided all the following conditions are met:
The original air end is returned assembled and all original seals
are intact.
Continued use of genuine Doosan parts, fluids, oils and filters.
Maintenance is performed at prescribed intervals by authorized
and properly trained service engineers.
D. Generator Alternator - 9 Kva through to 550 Kva. The earlier of
twenty-four (24) months from shipment to or the accumulation of
4,000 hours of operation by the initial user.
2.5 Kva Through to 8 Kva - The earlier of twelve (12) months
from shipment to or the accumulation of 2,000 hours of operation
by the initial user.
E. Portable Light Tower Alternator - The earlier of twelve (12)
months from shipment to or the accumulation of 2,000 hours of
operation by the initial user. Light Source model only, the earlier
of twenty-four (24) months from shipment to or the accumulation
of 4,000 hours of operation by the initial user.
F. Platinum Drive Train Extended Warranty - Platinum drive train
warranty is available for the following compressor types.
European built
7/20-7/26E-7/31E-7/41-7/51-7/71-12/56-P65-P90
7/120-9/110-14/85-10/105-14/115-10/125-7/170-12/150
USA built
Model Serial Code**
P185WJD-T4I D75
P185WYM-T4I D76
C185WKUB-T2 D80
P250WJD-T3 D81
P260/HP220WYM-T3 D82
C185SKUB-T2 E04
C185WKUB-T4I D95
P425-XP375-HP350-P600-HP450-VHP400 WIR (John Deere engines
only)
1. The original airend is returned assembled and unopened.
2. Continued use of genuine Doosan parts, fluids, oil and filters
3. Maintenance is performed at prescribed intervals by
authorized and properly trained service engineers.
The company shall be provided with such information as it
requires to confirm that these conditions have been complied with.
G. Construction Tools, (Portable Power range only) - Twelve (12)
months from shipment to initial user. The company will provide a
new part or repaired part, at it’s sole discretion, in place of any part
which is found to be defective in material or workmanship during
the period described above. Labour cost to replace the part is the
responsibility of the initial user.
H. Spare Parts - Six (6) months from date of shipment to the initial
user.
The company will provide a new part or repaired part, at its sole
discretion, in place of any part that is found to be defective in material
and workmanship during the period described above. Such parts will
be repaired or replaced without charge to the initial user during normal
working hours at the place of business of a distributor authorized to sell
the type of equipment involved or other establishment authorized. User
must present proof of purchase at the time of exercising warranty.
The above warranties do not apply to failures occurring as a result of
abuse; misuse, negligent repairs, corrosion, erosion and normal wear
and tear, alterations or modifications made to the product without
express written consent; or failure to follow the recommended
operating practices and maintenance procedures as provided in the
product’s operating and maintenance publications.
Accessories or equipment furnished by the company, but
manufactured by others, including, but not limited to, engines, tires,
batteries, engine electrical equipment, hydraulic transmissions,
carriers, shall carry only the manufacturers warranty, which the
company can lawfully assign to the initial user.
THE ABOVE WARRANTIES ARE IN LIEU OF ALL OTHER
WARRANTIES EXPRESSED OR IMPLIED, (EXCEPT THAT OF
TITLE), AND THERE ARE NO WARRANTIES OF
MERCHANTABILITY OR OF FITNESS FOR A PARTICULAR
PURPOSE.

4 WARRANTY
9/270, 9/300, 12/235, 17/235, 21/215, 9/270HA, 9/300HA, 10/300HA, 12/235HA, 17/235HA, 21/215HA
GENERAL WARRANTY INFORMATION - ESA
COMMENTS
PORTABLE COMPRESSOR PACKAGE 12 MONTHS / 2,000
HOURS
COVERS CONTROLS, SWITCHES, SHEET METAL,
RADIATOR, OIL COOLER, RECEIVER, PIPEWORK,
ELECTRICAL CIRCUIT ETC.
AIREND 24 MONTHS / 4,000
HOURS
60 MONTHS / 10,000 HOURS. EXTENDED LIMITED
WARRANTY AVAILABLE ON MAJOR COMPONENTS.
REFER TO OPERATOR’S MANUAL.
ENGINE SEE BELOW
2.5kVA - 8kVA
GENERATORS
PACKAGE 12 MONTHS / 2,000
HOURS
CONTACT THE COMPANY NETWORK FOR WARRANTY
(PARTS ONLY NO LABOUR).
ALTERNATOR 12 MONTHS / 2,000
HOURS
CONTACT THE COMPANY NETWORK FOR WARRANTY
(PARTS ONLY NO LABOUR).
ENGINE SEE BELOW
9kVA - 550kVA
GENERATORS
PACKAGE 12 MONTHS / 2,000
HOURS
COVERS CONTROLS, SWITCHES, SHEET METAL,
ELECTRICAL CIRCUIT ETC.
ALTERNATOR 24 MONTHS / 4,000
HOURS
CONTACT THE COMPANY FOR WARRANTY.
ENGINE SEE BELOW
LIGHT TOWER PACKAGE 12 MONTHS / 2,000
HOURS
COVERS CONTROLS, SWITCHES, SHEET METAL,
ELECTRICAL CIRCUIT ETC.
ALTERNATOR 12 MONTHS / 2,000
HOURS
EXTENDED WARRANTY OF 24 MONTHS / 4,000 HRS.
FOR LIGHTSOURCE INTRODUCED 8/16/99.
ENGINE SEE BELOW
ENGINES
MONTHS HOURS COMMENTS
CATERPILLAR 12 UNLIMITED EXTENDED WARRANTY PROVIDED VIA ENGINE
SUPPLIER’S OWN APPROVED NETWORK AT TIME OF
PURCHASE.
CUMMINS 24 2,000 EXTENDED WARRANTY PROVIDED VIA ENGINE
SUPPLIER’S OWN APPROVED NETWORK AT TIME OF
PURCHASE.
JOHN DEERE
(IN COMPRESSORS)
24 2,000
(IN GENERATORS) 24 2,000 24 MONTHS / 4,000 HRS. AVAILABLE FROM THE
COMPANY WITH USE OF GENUINE DOOSAN PARTS
AND OILS AT PRESCRIBED SERVICE INTERVALS.
CONTACT THE COMPANY NETWORK.
KUBOTA
(North America only)
24 2,000 EXTENDED WARRANTY OF 36 MONTHS / 3,000 HRS.
ON MAJOR COMPONENTS, PARTS ONLY, AVAILABLE
FROM KUBOTA.
(Western Europe and Oceania) 24 2,000 NO EXTENDED WARRANTY AVAILABLE.
(Central and South America, Asia,
Middle East and Africa)
12 1,000 NO EXTENDED WARRANTY AVAILABLE.
PARTS
MONTHS HOURS COMMENTS
DOOSAN 6 UNLIMITED PARTS ONLY AVAILABLE FROM THE COMPANY
NETWORK.
AIREND EXCHANGE
MONTHS HOURS COMMENTS
AIREND 12 2,000 60 MONTHS/10.000 HOURS AVAILABLE UNDER
CONDITIONS.

WARRANTY 5
9/270, 9/300, 12/235, 17/235, 21/215, 9/270HA, 9/300HA, 10/300HA, 12/235HA, 17/235HA, 21/215HA
NOTE: Actual warranty times may change.
Consult the Manufacturer’s warranty policy as shipped with each
new product.
Extended Limited Airend Warranty
All machines have the standard airend warranty, - The earlier of 24 months from shipment to, or the accumulation of 4000 hours of service by
the initial user.
The warranty against defects will include replacement of the complete Airend, provided the original Airend is returned assembled and unopened.
The optional limited warranty is the earlier of 60 months from shipment to, or the accumulation of 10,000 hours of service. The optional warranty
is limited to defects in major components (rotors, housings, gears and bearings), and is automatically available when the following conditions are
met:
1. The original airend is returned assembled and unopened.
2. Submissions of proof that Doosan fluid, filters and separators have been used. Refer to the Operation and Parts manual for the correct fluids,
filters and separator elements required.
3. Submissions of proof that maintenance intervals have been followed.
*BARE AIREND - pertains to major airend parts (rotors, housings, gears and bearings).
**AIREND COMPONENTS - pertains to auxiliary attachments to the bare airend (seals, pumps, valves, tubes, hoses, fittings and filter housing).
CONSTRUCTION TOOLS
MONTHS HOURS COMMENTS
CONSTRUCTION TOOLS 12 N/A
WARRANTY TIME *BARE AIREND **AIREND COMPONENTS
STANDARD 2YRS / 4,000HRS 100% PARTS & LABOUR 100% PARTS & LABOUR
OPTIONAL 5YRS / 10,000HRS 100% PARTS & LABOUR 0%

6 ISO SYMBOLS
9/270, 9/300, 12/235, 17/235, 21/215, 9/270HA, 9/300HA, 10/300HA, 12/235HA, 17/235HA, 21/215HA
GRAPHIC FORM AND MEANING OF ISO SYMBOLS
Prohibition / Mandatory Information / Instructions Warning
WARNING: Electrical shock risk WARNING - Pressurised component or
system.
WARNING - Hot surface.
WARNING - Pressure control. WARNING - Corrosion risk. WARNING - Air/gas flow or Air discharge.
WARNING - Pressurised vessel. WARNING - Hot and harmful exhaust gas. WARNING - Flammable liquid.
WARNING - Maintain correct tyre pressure.
(Refer to the GENERAL INFORMATION
section of this manual).
WARNING - Before connecting the tow bar
or commencing to tow consult the
operation and maintenance manual.
WARNING - For operating temperature
below 0°C, consult the operation and
maintenance manual.

ISO SYMBOLS 7
9/270, 9/300, 12/235, 17/235, 21/215, 9/270HA, 9/300HA, 10/300HA, 12/235HA, 17/235HA, 21/215HA
WARNING - Do not undertake any
maintenance on this machine until the
electrical supply is disconnected and the air
pressure is totally relieved.
WARNING - Consult the operation and
maintenance manual before commencing
any maintenance.
Do not breathe the compressed air from this
machine.
Do not remove the Operating and Maintenance
manual and manual holder from this machine.
Do not stack. Do not operate the machine without the guard
being fitted.
Do not stand on any service valve or other parts
of the pressure system.
Do not operate with the doors or enclosure
open.
Do not use fork lift truck from this side.
Do not exceed the trailer speed limit. No naked lights. Do not open the service valve before the
airhose is attached.
Use fork lift truck from this side only. Emergency stop. Tie down point

8 ISO SYMBOLS
9/270, 9/300, 12/235, 17/235, 21/215, 9/270HA, 9/300HA, 10/300HA, 12/235HA, 17/235HA, 21/215HA
Lifting point. On (power). Off (power).
Read the Operation and Maintenance manual
before operation or maintenance of this
machine is undertaken.
When parking use prop stand, handbrake and
wheel chocks.
Compressor oil filling
FREE SAFETY DECALS!
Safety Decals are available free of charge.
Decal part numbers are on the bottom of each decal and are also listed in the
compressor's parts manual. Submit orders for Safety Decals to the Doosan
Portable Power EMEA Aftermarket Department. The no charge order
should contain only Safety Decals. Help promote product safety! Assure that
decals are present on the machines. Replace decals that are not readable.

SAFETY 9
9/270, 9/300, 12/235, 17/235, 21/215, 9/270HA, 9/300HA, 10/300HA, 12/235HA, 17/235HA, 21/215HA
General Information
Ensure that the operator reads and understands the decals and
consults the manuals before maintenance or operation.
Ensure that the Operation and Maintenance manual, and the
manual holder, are not removed permanently from the machine.
Ensure that maintenance personnel are adequately trained,
competent and have read the Maintenance Manuals.
Make sure that all protective covers are in place and that the
canopy/doors are closed during operation.
The specification of this machine is such that the machine is not
suitable for use in flammable gas risk areas. If such an application is
required then all local regulations, codes of practice and site rules must
be observed. To ensure that the machine can operate in a safe and
reliable manner, additional equipment such as gas detection, exhaust
spark arrestors, and intake (shut-off) valves may be required,
dependant on local regulations or the degree of risk involved.
A weekly visual check must be made on all fasteners/fixing screws
securing mechanical parts. In particular, safety-related parts such as
coupling hitch, drawbar components, road-wheels, and lifting bail
should be checked for total security.
All components which are loose, damaged or unserviceable, must
be rectified without delay.
Compressed air
Compressed air can be dangerous if incorrectly handled. Before
doing any work on the unit, ensure that all pressure is vented from the
system and that the machine cannot be started accidentally.
Ensure that the machine is operating at the rated pressure and that
the rated pressure is known to all relevant personnel.
All air pressure equipment installed in or connected to the machine
must have safe working pressure ratings of at least the machine rated
pressure.
If more than one compressor is connected to one common
downstream plant, effective check valves and isolation valves must be
fitted and controlled by work procedures, so that one machine cannot
accidentally be pressurised / over pressurised by another.
Compressed air must not be used for a direct feed to any form of
breathing apparatus or mask.
The discharged air contains a very small percentage of compressor
lubricating oil and care should be taken to ensure that downstream
equipment is compatible.
If the discharged air is to be ultimately released into a confined
space, adequate ventilation must be provided.
When using compressed air always use appropriate personal
protective equipment.
All pressure containing parts, especially flexible hoses and their
couplings, must be regularly inspected, be free from defects and be
replaced according to the Manual instructions.
Avoid bodily contact with compressed air.
The safety valve located in the separator tank must be checked
periodically for correct operation.
Materials
The following substances may be produced during the operation of
this machine:
• brake lining dust
• engine exhaust fumes
AVOID INHALATION
Ensure that adequate ventilation of the cooling system and exhaust
gases is maintained at all times.
The following substances are used in the manufacture of this
machine and may be hazardous to health if used incorrectly:
• anti-freeze
• compressor lubricant
• engine lubricant
• preservative grease
• rust preventative
• diesel fuel
• battery electrolyte
AVOID INGESTION, SKIN CONTACT AND INHALATION OF
FUMES.
Should compressor lubricant come into contact with the eyes, then
irrigate with water for at least 5 minutes.
Should compressor lubricant come into contact with the skin, then
wash off immediately.
Consult a physician if large amounts of compressor lubricant are
ingested.
Consult a physician if compressor lubricant is inhaled.
Never give fluids or induce vomiting if the patient is unconscious or
having convulsions.
Safety data sheets for compressor and engine lubricants should be
obtained from the lubricant supplier.
Battery
Batteries contain corrosive liquid and produce explosive gas. Do
not expose to naked lights. Always wear personal protective clothing
when handling. When starting the machine from a slave battery ensure
that the correct polarity is observed and that connections are secure.
DO NOT ATTEMPT TO SLAVE START A FROZEN BATTERY
SINCE THIS MAY CAUSE IT TO EXPLODE.
Radiator
Hot engine coolant and steam can cause injury. Ensure that the
radiator filler cap is removed with due care and attention.
Engine starting fluid (ether)
Use and recharge system only with suppliers instructions and
replacement parts.
Some machines are fitted with an ether cold starting aid.
Do NOT use on engines which are provided with inlet heaters.
AVOID INGESTION, INHALATION, HOT SURFACES AND NAKED
LIGHTS.
Transport
When loading or transporting machines ensure that the specified
lifting and tie down points are used.
WARNINGS
Warnings call attention to instructions which must be followed
precisely to avoid injury or death.
CAUTIONS
Cautions call attention to instructions which must be followed
precisely to avoid damaging the product, process or its surroundings.
NOTES
Notes are used for supplementary information.

10 SAFETY
9/270, 9/300, 12/235, 17/235, 21/215, 9/270HA, 9/300HA, 10/300HA, 12/235HA, 17/235HA, 21/215HA
When loading or transporting machines ensure that the towing
vehicle, its size, weight, towing hitch and electrical supply are all
suitable to provide safe and stable towing at speeds either, up to the
legal maximum for the country in which it is being towed or, as specified
for the machine model if lower than the legal maximum.
Before towing the machine, ensure that:-
• the tyres and towing hitch are in a serviceable condition.
• the canopy is secure.
• all ancillary equipment is stored in a safe and secure manner.
When parking always use the handbrake and, if necessary, suitable
wheel chocks.

GENERAL INFORMATION - ESA (CE/HA) 11
9/270, 9/300, 12/235, 17/235, 21/215, 9/270HA, 9/300HA, 10/300HA, 12/235HA, 17/235HA, 21/215HA
‘CE’
‘HA’

12 GENERAL INFORMATION - ESA (CE/HA)
9/270, 9/300, 12/235, 17/235, 21/215, 9/270HA, 9/300HA, 10/300HA, 12/235HA, 17/235HA, 21/215HA
MODEL 12/235 9/270 9/300 10/300 21/215 17/235
COMPRESSOR
Actual free air delivery. m
3
/min/
cfm
23,3/
825
27,0/
950
29,9/
1060
29,9/
1060
21,5/
750
23,3/
825
Normal operating discharge
pressure.
psi/bar/
kPa
175/12/
1200
125/8,6/
860
125/8,6/
860
145/10/
1000
300/21/
2100
250/17,2/
1724
Maximum allowable pressure psi/bar/
kPa
200/13,8/
1380
150/10,3/
1030
150/10,3/
1030
170/11,7/
1170
325/22,4/
2240
275/19/
1900
Safety valve setting psi/bar/
kPa
217/15/
1500
217/15/
1500
217/15/
1500
217/15/
1500
362/25/
2500
362/25/
2500
Maximum pressure ratio
(absolute)
8:1 8:1 8:1 8:1 18:9:1 18:9:1
Operating ambient temperature
range
°C -10/+50 -10/+50 -10/+50 -10/+50 -10/+50 -10/+50
Maximum discharge temperature °C 120 120 120 120 120 120
COMPRESSOR
Cooling system. Oil Injection
Oil capacity. Litre 70 70 70 70 75 75
Maximum oil system temperature °C 120 120 120 120 120 120
Maximum oil system pressure psi/bar/
kPa
217/15/
1500
217/15/
1500
217/15/
1500
217/15/
1500
362/25/
2500
362/25/
2500
LUBRICATING OIL
SPECIFICATION (for the
specified ambient temperatures).
SEE NOTE - 1
MODEL 12/235 9/270 9/300 10/300 21/215 17/235
ENGINE QSL (300hp) QSL (300hp) QSL (340hp) QSL (340hp) QSL (340hp) QSL (340hp)
Number of cylinders /
Displacement
/Litre 6/8,9 6/8,9 6/8,9 6/8,9 6/8,9 6/8,9
Oil capacity. Litre 24 24 24 24 24 24
Speed at full load. Rev min
-1
1800 1800 1800 1800 1800 1800
Speed at idle. Rev min
-1
1200 1200 1200 1200 1350 1350
Electrical system. V DC 24 24 24 24 24 24
Power available at rated speed KW 224 224 255 255 255 255
Fuel tank capacity. Litre 550 550 550 550 550 550
Coolant capacity Litre 48 48 48 48 48 48
Max. gross weight kg 5125 5125 5125 5125 5125 5125
Shipping weight kg 4665 4665 4665 4665 4665 4665
NOTE - 1
ABOVE -23°C(-9°F)
Recommended: PRO-TEC or XHP605
Approved: SAE 10W, API CF-4/CG-4
PRO-TEC compressor fluid is factory-fitted, for use at all ambient
temperatures above -23°C(-9°F).
NOTE: Warranty may be extended only by continuous use of PRO-
TEC and Doosan oil filters and separators.
No other oil/fluids are compatible with PRO-TEC
No other oils/fluids should be mixed with PRO-TEC because the
resulting mixture could cause damage to the airend.
In the event that PRO-TEC is not available and / or the end user
needs to use an approved single grade engine oil, the complete
system including separator / receiver, cooler and pipework must be
flushed clear of the first fill fluid and new Doosan oil filters installed.
When this has been completed, the following oils are approved:
for ambient temperatures above -23°C(-9°F),
SAE 10W, API CF-4/CG-4
Safety data sheets can be obtained on request from your Doosan
dealership.

GENERAL INFORMATION - ESA (CE/HA) 13
9/270, 9/300, 12/235, 17/235, 21/215, 9/270HA, 9/300HA, 10/300HA, 12/235HA, 17/235HA, 21/215HA
INFORMATION ON AIRBORNE NOISE (CE regions)
- The A-weighted emission sound pressure level
. 83 dB(A), uncertainty 1 dB(A)
- The A-weighted emission sound power level
. 100 dB(A), uncertainty 1 dB(A)
The operating conditions of the machinery are in compliance with
ISO 3744:1995 and EN ISO 2151:2004
WEIGHT
Shipping weight 4665 kg
Maximum weight 5725 kg
Maximum horizontal towing force 5012 kgf Estimated
WHEELS AND TYRES - SITE RUNNING GEAR
Number of wheels. 4
Tyre size. 750 x 16 x 6PR
Tyre pressure. 3,5 bar (50 lbf in
-2
)
TOWING SPEED
Maximum towing speed. 30 km h
-1
(20 mile h
-1
)
Further information may be obtained by request through the
customer services department.

14 OPERATING INSTRUCTIONS
9/270, 9/300, 12/235, 17/235, 21/215, 9/270HA, 9/300HA, 10/300HA, 12/235HA, 17/235HA, 21/215HA
COMMISSIONING
Upon receipt of the unit, and prior to putting it into service, it is
important to adhere strictly to the instructions given below in PRIOR
TO STARTING.
Ensure that the operator reads and understands the decals and
consults the manuals before maintenance or operation.
Ensure that the position of the emergency stop device is known and
recognised by its markings. Ensure that it is functioning correctly and
that the method of operation is known.
Before towing the unit, ensure that the tyre pressures are correct
(refer to the GENERAL INFORMATION section of this manual) and
that the handbrake is functioning correctly (refer to the
MAINTENANCE section of this manual). Before towing the unit during
the hours of darkness, ensure that the lights are functioning correctly
(where fitted).
Ensure that all transport and packing materials are discarded.
Ensure that the correct fork lift truck slots or marked lifting / tie down
points are used whenever the machine is lifted or transported.
When selecting the working position of the machine ensure that
there is sufficient clearance for ventilation and exhaust requirements,
observing any specified minimum dimensions (to walls, floors etc.).
Adequate clearance needs to be allowed around and above the
machine to permit safe access for specified maintenance tasks.
Ensure that the machine is positioned securely and on a stable
foundation. Any risk of movement should be removed by suitable
means, especially to avoid strain on any rigid discharge piping.
Attach the battery cables to the battery(s) ensuring that they are
tightened securely. Attach the negative cable before attaching the
positive cable.
WARNING: All air pressure equipment installed in or connected
to the machine must have safe working pressure ratings of at
least the machine rated pressure, and materials compatible with
the compressor lubricant (refer to the GENERAL INFORMATION
section).
WARNING: If more than one compressor is connected to one
common downstream plant, effective check valves and isolation
valves must be fitted and controlled by work procedures, so that
one machine cannot accidentally be pressurised / over pressu-
rised by another.
WARNING: If flexible discharge hoses are to carry more than 7
bar pressure then it is recommended that safety retaining wires
are used on the hoses.

OPERATING INSTRUCTIONS 15
9/270, 9/300, 12/235, 17/235, 21/215, 9/270HA, 9/300HA, 10/300HA, 12/235HA, 17/235HA, 21/215HA
PRIOR TO STARTING
1. Place the unit in a position that is as level as possible. The design
of the unit permits a 15 degree lengthways and sideways limit on
out of level operation. It is the engine, not the compressor, that is
the limiting factor.
When the unit has to be operated out of level, it is important to keep
the engine oil level near the high level mark (with the unit level).
2. Check the engine lubrication oil in accordance with the operating
instructions in the Engine Operator’s Manual.
3. Check the compressor oil level in the sight glass located on the
separator tank.
4. Check the diesel fuel level. A good rule is to top up at the end of
each working day. This prevents condensation from occurring in the
tank.
5. Drain the fuel filter water separator of water, ensuring that any
released fuel is safely contained.
6. Check the radiator coolant level (with the unit level).
7. Open the service valve(s) to ensure that all pressure is relieved
from the system. Close the service valve(s).
9. Check the emergency stop. Rotate knob as indicated to release.
10.Close the manual relief valve inside the service door near the
emergency stop.
When starting or operating the machine in temperatures below or
approaching 0°C, ensure that the operation of the regulation system,
the unloader valve, the safety valve, and the engine are not impaired
by ice or snow, and that all inlet and outlet pipes and ducts are clear of
ice and snow.
CAUTION: Do not overfill either the engine or the compressor with
oil.
CAUTION: Use only a No. 2-D diesel fuel oil with a minimum octane
number of 45 and a sulphur content not greater than 0,5%.
CAUTION: When refueling:-
• switch off the engine.
• do not smoke.
• extinguish all naked lights.
• do not allow the fuel to come into contact with hot surfaces.
• wear personal protective equipment.
8. CAUTION: Do not operate the machine with the canopy/doors in
the open position as this may cause overheating and operators to
be exposed to high noise levels.

16 OPERATING INSTRUCTIONS
9/270, 9/300, 12/235, 17/235, 21/215, 9/270HA, 9/300HA, 10/300HA, 12/235HA, 17/235HA, 21/215HA
OPERATING CONTROLS AND INSTRUMENTS
The operating controls and instruments are arranged on the control
panel as shown above. A description of each panel device is as
follows:
1. Panel Light: Illuminates the instrument control panel controlled
by Switch 14.
2. High Compressor Temp: Fault indicator lamp. Indicates
shutdown due to high compressor temperature.
3. Low Radiator Coolant Level: Alarm indicator lamp. Indicates
engine coolant needs service.
4. Low Engine Oil Pressure: Fault indicator lamp. Indicates
shutdown due to low engine oil pressure.
5. Restricted Air Filter: Alarm indicator lamp. Indicates engine/
compressor air inlet filters need service.
6. High Engine Coolant Temp: Fault indicator lamp. Indicates
shutdown due to high engine water temperature.
7. Restricted IQ Air Filters: Fault indicator lamp. Indicates
shutdown due to high pressure in ”IQ” air filters (if equipped).
8. Low Fuel Level: Fault indicator lamp. Indicates shutdown due to
low fuel level. Lamp blinks at low fuel warning.
9. Compressor Malfunction: Fault indicator lamp. Indicates
shutdown due to compressor system fault. Refer to Fault Code
List.
10. Low Battery Voltage: Alarm indicator lamp. Indicates battery or
charging system requires service.
11. Engine Malfunction: Engine Fault code. Refer to service card or
engine manual for codes and service requirements.
12. Malfunction Code (4 Digit): Compressor or engine fault. Refer
to manual for list of codes and service requirements.
13. Inlet Heater / Wait to Start Lamp: Indicates engine manifold pre
heater is energized. Wait until lamp extinguishes before engaging
starter.
14. Panel Light Switch: Controls panel lamp # 1.
15. Service Air Switch: Momentary contact switch. Allows engine to
warm up at low compressor pressure.
16. ON/OFF Start Switch: Main Power Control Switch.
17. Heater Switch: ON/OFF Power Switch for regulation and IQ
heaters. Prevents freeze up in cold weather.
18. Hourmeter: Indicates machine operating hours.
19. E-STOP: Emergency Stop Push Button (ESA units only). Push to
stop, turn to release.
20. Discharge Air Pressure Gage: Indicates pressure in receiver
tank, normally from 0 psi(kPa) to the rated pressure of the
machine.
21. Engine Tachometer: Indicates engine speed in RPM from 0
when stopped to full speed.
22. Fuel Level Gage: Indicate fuel level in tank.
23. Engine Water Temp Gage
24. Compressor Oil Temp Gage
25. Engine Oil Pressure Gage
26. Battery Voltage Gage

OPERATING INSTRUCTIONS 17
9/270, 9/300, 12/235, 17/235, 21/215, 9/270HA, 9/300HA, 10/300HA, 12/235HA, 17/235HA, 21/215HA
Wedge Diagnostic Display Codes
If the fault indicator lamp is illuminated, refer to the Alert/Shutdown list below.
If the fault indicator lamp is illuminated, refer to the Engine diagnostic list below.
ALERT/SHUTDOWN CONDITIONS
CONDITION
ALERT SHUTDOWN
CODE LIGHT BLINKS CODE LIGHT STEADY DELAY
(sec)
Engine Speed < Min. RPM 1 CPRSR
Malfunction.
30
Engine Speed > Max. RPM 2 CPRSR
Malfunction.
30
Engine Crank Time Exceeded 3 CPRSR
Malfunction.
0
High Engine Oil Temperature 5 CPRSR
Malfunction.
High Intake Manifold
Temperature
6 CPRSR
Malfunction.
Water In Fuel 8 CPRSR
Malfunction.
Engine Not Responding To
Throttle command
10 CPRSR
Malfunction.
Too Many Start Attempts
During Autostart
11 CPRSR
Malfunction.
0
Engine Shut Itself Down:
reason unknown
29 CPRSR
Malfunction.
0
Low AE Oil Pressure 31 CPRSR
Malfunction.
20
Disch. Temp (RT2)
Sensor Fault
32 CPRSR
Malfunction.
10
Sep. Tank Pressure (PT1)
Sensor Fault
33 CPRSR
Malfunction.
Seperator Tank Pressure >20
PSI During Start Attempt
(Engine Will Not Crank)
34 CPRSR
Malfunction.
0
Machine Over Pressure 35 CPRSR
Malfunction.
1