Atlas Copco XAMS 527 User manual

XAMS 527 - XAMS 1150 CD7
XATS 487 - XATS 1050 CD7 Engine CAT C9
XAHS 447 - XAHS 950 CD7
XAVS 407 - XAVS 900 CD7
Instruction Manual
for Portable Compressors
English

ATLAS COPCO - PORTABLE AIR DIVISION
www.atlascopco.com
Printed matter N°
03/2009
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Instruction Manual
for Portable Compressor
XAMS 527 /
XATS 487 /
XAHS 447 /
XAVS 407 /
XAMS 1150 Cd7
XATS 1050 Cd7
XAHS 950 Cd7
XAVS 900 Cd7
07/2014

2
Warranty and Liability Limitation
Use only authorized parts.
Any damage or malfunction caused by the use of unauthorized parts is not covered by Warranty
or Product Liability.
The manufacturer does not accept any liability for any damage arising for modifications,
additions or conversions made without the manufacturer's approval in writing.
Copyright 204, Atlas Copco Airpower n.v., Antwerp, Belgium.
Any unauthorized use or copying of the contents or any part thereof is prohibited.
This applies in particular to trademarks, model denominations, part numbers and drawings.
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Table of contents
1 SAFETY PRECAUTIONS ..................................................................................................................... 7
1.1 Introduction ............................................................................................................................................. 7
1.2 General safety precautions ...................................................................................................................... 8
1.3 Safety during transport and installation .................................................................................................. 9
1.4 Safety during use and operation............................................................................................................ 10
1.5 Safety during maintenance and repair................................................................................................... 12
1.6 Tool applications safety ........................................................................................................................ 14
1.7 Specific safety precautions.................................................................................................................... 14
2 LEADING PARTICULARS................................................................................................................. 16
2.1 General description ............................................................................................................................... 16
2.2 Markings and information labels .......................................................................................................... 18
2.3 Main parts.............................................................................................................................................. 20
2.4 Regulating system ................................................................................................................................. 22
2.4.1 Overview ......................................................................................................................................... 22
2.4.2 Air flow ........................................................................................................................................... 24
2.4.3 Oil system........................................................................................................................................ 25
2.4.4 Continuous regulating system ......................................................................................................... 26
2.5 Electric system ...................................................................................................................................... 28
2.6 Options .................................................................................................................................................. 30
2.6.1 ABS brakes...................................................................................................................................... 30
2.6.2 Aftercooler and waterseparator ....................................................................................................... 30
2.6.3 Reheater........................................................................................................................................... 30
2.6.4 PD filter ........................................................................................................................................... 30
2.6.5 QD filter........................................................................................................................................... 30
2.6.6 Spark arrestor................................................................................................................................... 30
2.6.7 Inlet shut down valve....................................................................................................................... 30
2.6.8 Cold weather equipment.................................................................................................................. 30
2.6.9 Manifold with sensors ..................................................................................................................... 30
3 OPERATING INSTRUCTIONS .......................................................................................................... 31
3.1 Parking, towing and lifting instructions................................................................................................ 31
3.1.1 Parking instructions ......................................................................................................................... 32
3.1.2 Towing instructions ......................................................................................................................... 33
3.1.3 Lifting instructions .......................................................................................................................... 34
3.2 Before starting....................................................................................................................................... 35
3.2.1 Specific start procedure.....................................................................................................................39
3.3 Starting / Stopping................................................................................................................................. 38
3.3.1 Control panel ................................................................................................................................... 38
3.3.2 Operations overview........................................................................................................................ 39
3.3.4 Battery switch................................................................................................................................... 39
3.3.4 Overview icons................................................................................................................................ 40
3.3.5 Possible views.................................................................................................................................. 42
3.3.6 Starting ............................................................................................................................................ 43
3.3.7 Stopping............................................................................................................................................ 50
3.3.8 Sutdown............................................................................................................................................52
3.3.9 Power off.......................................................................................................................................... 52
3.3.10 Diesel particulate filter regeneration................................................................................................ 52
3.3.11 Settings.............................................................................................................................................57
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3.3.12 Fault codes....................................................................................................................................... 59
3.3.13 Emergency stop................................................................................................................................ 62
4 MAINTENANCE.................................................................................................................................. 62
4.1 Liability ................................................................................................................................................. 62
4.2 Service paks........................................................................................................................................... 63
4.3 Service kits ............................................................................................................................................ 63
4.4 Storage................................................................................................................................................... 63
4.5 Preventive maintenance schedule for the compressor........................................................................... 63
4.6 Oil specifications................................................................................................................................... 66
4.6.1 Synthetic compressor oil PAROIL S............................................................................................... 67
4.6.2 Mineral compressor oil PAROIL M................................................................................................ 67
4.6.3 Synthetic engine oil PAROIL 5W30............................................................................................... 67
4.6.4 Mineral engine oil PAROIL SAE 15W40....................................................................................... 67
4.7 Oil level check....................................................................................................................................... 67
4.7.1 Check engine oil level ..................................................................................................................... 67
4.7.2 Check compressor oil level.............................................................................................................. 68
4.8 Oil and oil filter change......................................................................................................................... 68
4.8.1 Engine oil and oil filter change........................................................................................................ 68
4.8.2 Topping up the compressor oil ........................................................................................................ 69
4.8.3 Compressor oil and oil filter change................................................................................................ 70
4.9 Coolant specifications ........................................................................................................................... 72
4.9.1 PARCOOL EG ................................................................................................................................ 72
4.10 Coolant check........................................................................................................................................ 73
4.10.1 Monitoring coolant condition .......................................................................................................... 73
4.10.2 Topping up of coolant...................................................................................................................... 74
4.10.3 Replacing the coolant ...................................................................................................................... 74
4.11 Cleaning coolers.................................................................................................................................... 75
4.12 Battery care ........................................................................................................................................... 75
4.12.1 Electrolyte........................................................................................................................................ 76
4.12.2 Activating a dry-charged battery ..................................................................................................... 76
4.12.3 Recharging a battery........................................................................................................................ 77
4.12.4 Battery maintenance ........................................................................................................................ 77
4.13 Compressor element overhaul............................................................................................................... 77
5 ADJUSTMENTS AND SERVICING PROCEDURES ....................................................................... 78
5.1 Adjustment of the continuous regulating system .................................................................................. 78
5.2 Air filters engine / compressor .............................................................................................................. 79
5.2.1 Main parts........................................................................................................................................ 79
5.2.2 Cleaning the dust trap...................................................................................................................... 80
5.2.3 Replacing the filter element and the safety cartridge ...................................................................... 80
5.2.4 Air receiver ...................................................................................................................................... 81
5.3 Safety valve........................................................................................................................................... 82
5.4 Fuel system............................................................................................................................................ 83
5.5 Brake adjustments ................................................................................................................................. 85
5.5.1 Brake shoe adjustment (no ABS) .................................................................................................... 85
5.5.2 Brake adjustment wagon ................................................................................................................. 86
5.5.3 Frame maintenance and repair......................................................................................................... 87
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6 PROBLEM SOLVING ......................................................................................................................... 88
7 AVAILABLE OPTIONS ...................................................................................................................... 91
8 TECHNICAL SPECIFICATIONS ....................................................................................................... 93
8.1 Torque values........................................................................................................................................ 93
8.1.1 General torque values ...................................................................................................................... 93
8.1.2 Critical torque values....................................................................................................................... 93
8.2Compressor / Engine specifications....................................................................................................... 95
8.2.1 Reference conditions ....................................................................................................................... 95
8.2.2 Limitations....................................................................................................................................... 95
8.2.3 Performance data............................................................................................................................. 96
8.2.4 Design data ...................................................................................................................................... 96
9 DATAPLATE ....................................................................................................................................... 99
10 LEGISLATION..................................................................................................................................... 100
10.1 Parts, subjected to Pressure Equipment Directive GB12243-89
........................................................... 100
10.2 Parts, subjected to Simple Pressure Vessel Directive GB150-1998...................................................... 100
11 MAINTENANCE RECORD................................................................................................................. 101
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Preface
Congratulations on the purchase of your Atlas Copco compressor. It is a solid, safe and reliable machine, built
according to the latest technology. Follow the instructions in this booklet and we guarantee you years of troublefree
operation. Please read the following instructions carefully before starting to use your compressor.
Always keep the manual available near the machine.
In all correspondence always mention the compressor type and serial number, shown on the data plate.
The company reserves the right to make changes without prior notice.
1 Safety precautions
1.1 Introduction
The policy of Atlas Copco is to provide the users of their equipment with safe, reliable and efficient products.
Factors taken into account are among others:
• the intended and predictable future use of the products, and the environments in which they are expected to
operate,
• applicable rules, codes and regulations,
• the expected useful product life, assuming proper service and maintenance,
• providing the manual with up-to-date information.
Before handling any product, take time to read the relevant instruction manual. Besides giving detailed operating
instructions, it also gives specific information about safety, preventive maintenance, etc.
Keep the manual always at the unit location, easy accessible to the operating personnel.
See also the safety precautions of the engine and possible other equipment, which are separately sent along or are
mentioned on the equipment or parts of the unit.
These safety precautions are general and some statements will therefore not always apply to a particular unit.
Only people that have the right skills should be allowed to operate, adjust, perform maintenance or repair on Atlas
Copco equipment. It is the responsibility of management to appoint operators with the appropriate training and skill
for each category of job.
Skill level 1: Operator
An operator is trained in all aspects of operating the unit with the push-buttons, and is trained to know the safety
aspects.
To be read attentively and acted accordingly before towing, lifting, operating, performing
maintenance or repairing the compressor.
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Skill level 2: Mechanical technician
A mechanical technician is trained to operate the unit the same as the operator. In addition, the mechanical
technician is also trained to perform maintenance and repair, as described in the instruction manual, and is allowed
to change settings of the control and safety system. A mechanical technician does not work on live electrical
components.
Skill level 3: Electrical technician
An electrical technician is trained and has the same qualifications as both the operator and the mechanical
technician. In addition, the electrical technician may carry out electrical repairs within the various enclosures of the
unit. This includes work on live electrical components.
Skill level 4: Specialist from the manufacturer
This is a skilled specialist sent by the manufacturer or its agent to perform complex repairs or modifications to the
equipment.
In general it is recommended that not more than two people operate the unit, more operators could lead to unsafe
operating conditions. Take necessary steps to keep unauthorized persons away from the unit and eliminate all
possible sources of danger at the unit.
When handling, operating, overhauling and/or performing maintenance or repair on Atlas Copco equipment, the
mechanics are expected to use safe engineering practices and to observe all relevant local safety requirements and
ordinances. The following list is a reminder of special safety directives and precautions mainly applicable to Atlas
Copco equipment.
These safety precautions apply to machinery processing or consuming air. Processing of any other gas requires
additional safety precautions typical to the application and are not included herein.
Neglecting the safety precautions may endanger people as well as environment and machinery:
? endanger people due to electrical, mechanical or chemical influences,
? endanger the environment due to leakage of oil, solvents or other substances,
? endanger the machinery due to function failures.
All responsibility for any damage or injury resulting from neglecting these precautions or by non-observance of
ordinary caution and due care required in handling, operating, maintenance or repair, also if not expressly
mentioned in this instruction manual, is disclaimed by Atlas Copco.
The manufacturer does not accept any liability for any damage arising from the use of non-original parts and for
modifications, additions or conversions made without the manufacturer’s approval in writing.
If any statement in this manual does not comply with local legislation, the stricter of the two shall be applied.
Statements in these safety precautions should not be interpreted as suggestions, recommendations or inducements
that it should be used in violation of any applicable laws or regulations.
1.2 General safety precautions
1 The owner is responsible for maintaining the unit in a safe operating condition. Unit parts and accessories must
be replaced if missing or unsuitable for safe operation.
2 The supervisor, or the responsible person, shall at all times make sure that all instructions regarding machinery
and equipment operation and maintenance are strictly followed and that the machines with all accessories and
safety devices, as well as the consuming devices, are in good repair, free of abnormal wear or abuse, and are not
tampered with.
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3 Whenever there is an indication or any suspicion that an internal part of a machine is overheated, the machine
shall be stopped but no inspection covers shall be opened before sufficient cooling time has elapsed; this to
avoid the risk of spontaneous ignition of oil vapour when air is admitted.
4 Normal ratings (pressures, temperatures, speeds, etc.) shall be durably marked.
5 Operate the unit only for the intended purpose and within its rated limits (pressure, temperature, speeds, etc.).
6 The machinery and equipment shall be kept clean, i.e. as free as possible from oil, dust or other deposits.
7 To prevent an increase in working temperature, inspect and clean heat transfer surfaces (cooler fins,
intercoolers, water jackets, etc.) regularly. See the 4.5 Preventive maintenance schedule for the compressor
8 All regulating and safety devices shall be maintained with due care to ensure that they function properly. They
may not be put out of action.
9 Care shall be taken to avoid damage to safety valves and other pressure-relief devices, especially to avoid
plugging by paint, oil coke or dirt accumulation, which could interfere with the functioning of the device.
10 Pressure and temperature gauges shall be checked regularly with regard to their accuracy. They shall be
replaced whenever outside acceptable tolerances.
11 Safety devices shall be tested as described in the maintenance schedule of the instruction manual to determine
that they are in good operating condition. See the 4.5 Preventive maintenance schedule for the compressor.
12 Mind the markings and information labels on the unit.
13 In the event the safety labels are damaged or destroyed, they must be replaced to ensure operator safety.
14 Keep the work area neat. Lack of order will increase the risk of accidents.
15 When working on the unit, wear safety clothing. Depending on the kind of activities these are: safety glasses,
ear protection, safety helmet (including visor), safety gloves, protective clothing, safety shoes. Do not wear the
hair long and loose (protect long hair with a hairnet), or wear loose clothing or jewelry.
16 Take precautions against fire. Handle fuel, oil and anti-freeze with care because they are inflammable
substances. Do not smoke or approach with naked flame when handling such substances. Keep a fire-
extinguisher in the vicinity.
1.3 Safety during transport and installation
To lift a unit, all loose or pivoting parts, e.g. doors and towbar, shall first be securely fastened.
Do not attach cables, chains or ropes directly to the lifting eye; apply a crane hook or lifting shackle meeting local
safety regulations. Never allow sharp bends in lifting cables, chains or ropes.
Helicopter lifting is not allowed.
It is strictly forbidden to dwell or stay in the risk zone under a lifted load. Never lift the unit over people or
residential areas. Lifting acceleration and retardation shall be kept within safe limits.
1 Before towing the unit:
. ascertain that the pressure vessel(s) is (are) depressurized,
. check the towbar, the brake system and the towing eye. Also check the coupling of the towing vehicle,
. check the towing and brake capability of the towing vehicle,
. check that the towbar, jockey wheel or stand leg is safely locked in the raised position,
. ascertain that the towing eye can swivel freely on the hook,
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. check that the wheels are secure and that the tyres are in good condition and inflated correctly,
. connect the signalisation cable, check all lights and connect the pneumatic brake couplers,
. attach the safety break-away cable or safety chain and emergency brake cable to the towing vehicle,
. remove wheel chocks, if applied, and disengage the parking brake.
2 To tow a unit use a towing vehicle of ample capacity. Refer to the documentation of the towing vehicle.
3 If the unit is to be backed up by the towing vehicle, disengage the overrun brake mechanism (if it is not an
automatic mechanism).
4 Never exceed the maximum towing speed of the unit (mind the local regulations).
5 Place the unit on level ground and apply the parking brake before disconnecting the unit from the towing
vehicle. Unclip the safety break-away cable or safety chain. If the unit has no parking brake or jockey wheel,
immobilize the unit by placing chocks in front of and/or behind the wheels. When the towbar can be positioned
vertically, the locking device must be applied and kept in good order.
6 To lift heavy parts, a hoist of ample capacity, tested and approved according to local safety regulations, shall be
used.
7 Lifting hooks, eyes, shackles, etc., shall never be bent and shall only have stress in line with their design load
axis. The capacity of a lifting device diminishes when the lifting force is applied at an angle to its load axis.
8 For maximum safety and efficiency of the lifting apparatus all lifting members shall be applied as near to
perpendicular as possible. If required, a lifting beam shall be applied between hoist and load.
9 Never leave a load hanging on a hoist.
10 A hoist has to be installed in such a way that the object will be lifted perpendicular. If that is not possible, the
necessary precautions must be taken to prevent load-swinging, e.g. by using two hoists, each at approximately
the same angle not exceeding 30° from the vertical.
11 Locate the unit away from walls. Take all precautions to ensure that hot air exhausted from the engine and
driven machine cooling systems cannot be recirculated. If such hot air is taken in by the engine or driven
machine cooling fan, this may cause overheating of the unit; if taken in for combustion, the engine power will
be reduced.
12 Before moving the compressor, switch it off.
1.4 Safety during use and operation
1 When the unit has to operate in a fire-hazardous environment, each engine exhaust has to be provided with a
spark arrestor to trap incendiary sparks.
2 The exhaust contains carbon monoxide which is a lethal gas. When the unit is used in a confined space, conduct
the engine exhaust to the outside atmosphere by a pipe of sufficient diameter; do this in such a way that no extra
back pressure is created for the engine. If necessary, install an extractor. Observe any existing local regulations.
Make sure that the unit has sufficient air intake for operation. If necessary, install extra air intake ducts.
3 When operating in a dust-laden atmosphere, place the unit so that dust is not carried towards it by the wind.
Operation in clean surroundings considerably extends the intervals for cleaning the air intake filters and the
cores of the coolers.
4 Close the compressor air outlet valve before connecting or disconnecting a hose. Ascertain that a hose is fully
depressurized before disconnecting it. Before blowing compressed air through a hose or air line, ensure that the
open end is held securely, so that it cannot whip and cause injury.
5 The air line end connected to the outlet valve must be safeguarded with a safety cable, attached next to the
valve.
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6 No external force may be exerted on the air outlet valves, e.g. by pulling on hoses or by installing auxiliary
equipment directly to a valve, e.g. a water separator, a lubricator, etc. Do not step on the air outlet valves.
7 Never move a unit when external lines or hoses are connected to the outlet valves, to avoid damage to valves,
manifold and hoses.
8 Do not use compressed air from any type of compressor, without taking extra measures, for breathing purposes
as this may result in injury or death. For breathing air quality, the compressed air must be adequately purified
according to local legislation and standards. Breathing air must always be supplied at stable, suitable pressure.
9 Distribution pipework and air hoses must be of correct diameter and suitable for the working pressure. Never
use frayed, damaged or deteriorated hoses. Replace hoses and flexibles before the lifetime expires. Use only the
correct type and size of hose end fittings and connections.
10 If the compressor is to be used for sand-blasting or will be connected to a common compressed-air system, fit
an appropriate non-return valve (check valve) between compressor outlet and the connected sand-blasting or
compressed-air system. Observe the right mounting position/direction.
11 Before removing the oil filler plug, ensure that the pressure is released by opening an air outlet valve.
12 Never remove a filler cap of the cooling water system of a hot engine. Wait until the engine has sufficiently
cooled down.
13 Never refill fuel while the unit is running, unless otherwise stated in the Atlas Copco Instruction Book (AIB).
Keep fuel away from hot parts such as air outlet pipes or the engine exhaust. Do not smoke when fuelling.
When fuelling from an automatic pump, an earthing cable should be connected to the unit to discharge static
electricity. Never spill nor leave oil, fuel, coolant or cleansing agent in or around the unit.
14 All doors shall be shut during operation so as not to disturb the cooling air flow inside the bodywork and/or
render the silencing less effective. A door should be kept open for a short period only e.g. for inspection or
adjustment.
15 Periodically carry out maintenance works according to the maintenance schedule.
16 Stationary housing guards are provided on all rotating or reciprocating parts not otherwise protected and which
may be hazardous to personnel. Machinery shall never be put into operation, when such guards have been
removed, before the guards are securely reinstalled.
17 Noise, even at reasonable levels, can cause irritation and disturbance which, over a long period of time, may
cause severe injuries to the nervous system of human beings. When the sound pressure level, at any point where
personnel normally has to attend, is:
. below 70 dB(A): no action needs to be taken,
. above 70 dB(A): noise-protective devices should be provided for people continuously being present in the
room,
. below 85 dB(A): no action needs to be taken for occasional visitors staying a limited time only,
. above 85 dB(A): room to be classified as a noise-hazardous area and an obvious warning shall be placed
permanently at each entrance to alert people entering the room, for even relatively short times, about the
need to wear ear protectors,
. above 95 dB(A): the warning(s) at the entrance(s) shall be completed with the recommendation that also
occasional visitors shall wear ear protectors,
. above 105 dB(A): special ear protectors that are adequate for this noise level and the spectral composition of
the noise shall be provided and a special warning to that effect shall be placed at each entrance.
18 The unit has parts, which may be accidentally touched by personnel, of which the temperature can be in exess
of 80 °C (176 °F). The insulation or safety guard, protecting these parts shall not be removed before the parts
have cooled down to room temperature.
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19 Never operate the unit in surroundings where there is a possibility of taking in flammable or toxic fumes.
20 If the working process produces fumes, dust or vibration hazards, etc., take the necessary steps to eliminate the
risk of personnel injury.
21 When using compressed air or inert gas to clean down equipment, do so with caution and use the appropriate
protection, at least safety glasses, for the operator as well as for any bystander. Do not apply compressed air or
inert gas to your skin or direct an air or gas stream at people. Never use it to clean dirt from your clothes.
22 When washing parts in or with a cleaning solvent, provide the required ventilation and use appropriate
protection such as a breathing filter, safety glasses, rubber apron and gloves, etc.
23 Safety shoes should be compulsory in any workshop and if there is a risk, however small, of falling objects,
wearing of a safety helmet should be included.
24 If there is a risk of inhaling hazardous gases, fumes or dust, the respiratory organs must be protected and
depending on the nature of the hazard, so must the eyes and skin.
25 Remember that where there is visible dust, the finer, invisible particles will almost certainly be present too; but
the fact that no dust can be seen is not a reliable indication that dangerous, invisible dust is not present in the air.
26 Never operate the unit at pressures or speeds below or in excess of its limits as indicated in the technical
specifications.
1.5 Safety during maintenance and repair
Maintenance, overhaul and repair work shall only be carried out by adequately trained personnel; if required, under
supervision of someone qualified for the job.
1 Use only the correct tools for maintenance and repair work, and only tools which are in good condition.
2 Parts shall only be replaced by genuine Atlas Copco replacement parts.
3 All maintenance work, other than routine attention, shall only be undertaken when the unit is stopped. Steps
shall be taken to prevent inadvertent starting. In addition, a warning sign bearing a legend such as ”work in
progress; do not start” shall be attached to the starting equipment. On engine-driven units the battery shall be
disconnected and removed or the terminals covered by insulating caps. On electrically driven units the main
switch shall be locked in open position and the fuses shall be taken out. A warning sign bearing a legend such as
”work in progress; do not supply voltage” shall be attached to the fuse box or main switch.
4 Before dismantling any pressurized component, the compressor or equipment shall be effectively isolated from
all sources of pressure and the entire system shall be relieved of pressure. Do not rely on non-return valves
(check valves) to isolate pressure systems. In addition, a warning sign bearing a legend such as ”work in
progress; do not open” shall be attached to each of the outlet valves.
5 Prior to stripping an engine or other machine or undertaking major overhaul on it, prevent all movable parts
from rolling over or moving.
6 Make sure that no tools, loose parts or rags are left in or on the machine. Never leave rags or loose clothing near
the engine air intake.
7 Never use flammable solvents for cleaning (fire-risk).
8 Take safety precautions against toxic vapours of cleaning liquids.
9 Never use machine parts as a climbing aid.
10 Observe scrupulous cleanliness during maintenance and repair. Keep away dirt, cover the parts and exposed
openings with a clean cloth, paper or tape.
11 Never weld on or perform any operation involving heat near the fuel or oil systems. Fuel and oil tanks must be
completely purged, e.g. by steam-cleaning, before carrying out such operations. Never weld on, or in any way
modify, pressure vessels. Disconnect the alternator cables during arc welding on the unit.

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12 Support the towbar and the axle(s) securely if working underneath the unit or when removing a wheel. Do not
rely on jacks.
13 Do not remove any of, or tamper with, the sound-damping material. Keep the material free of dirt and liquids
such as fuel, oil and cleansing agents. If any sound-damping material is damaged, replace it to prevent the
sound pressure level from increasing.
14 Use only lubricating oils and greases recommended or approved by Atlas Copco or the machine manufacturer.
Ascertain that the selected lubricants comply with all applicable safety regulations, especially with regard to
explosion or fire-risk and the possibility of decomposition or generation of hazardous gases. Never mix
synthetic with mineral oil.
15 Protect the engine, alternator, air intake filter, electrical and regulating components, etc., to prevent moisture
ingress, e.g. when steam-cleaning.
16 When performing any operation involving heat, flames or sparks on a machine, the surrounding components
shall first be screened with non-flammable material.
17 Never use a light source with open flame for inspecting the interior of a machine.
18 Disconnect –battery-clamp before starting electrical servicing or welding (evt. turn battery-switch in “off”
position).
19 When repair has been completed, the machine shall be barred over at least one revolution for reciprocating
machines, several revolutions for rotary ones to ensure that there is no mechanical interference within the
machine or driver. Check the direction of rotation of electric motors when starting up the machine initially and
after any alteration to the electrical connection(s) or switch gear, to check that the oil pump and the fan function
properly.
20 Maintenance and repair work should be recorded in an operator’s logbook for all machinery. Frequency and
nature of repairs can reveal unsafe conditions.
21 When hot parts have to be handled, e.g. shrink fitting, special heat-resistant gloves shall be used and, if
required, other body protection shall be applied.
22 When using cartridge type breathing filter equipment, ascertain that the correct type of cartridge is used and that
its useful service life is not surpassed.
23 Make sure that oil, solvents and other substances likely to pollute the environment are properly disposed of.
24 Before clearing the unit for use after maintenance or overhaul, check that operating pressures, temperatures and
speeds are correct and that the control and shutdown devices function correctly.
1.6 Tool applications safety
Apply the proper tool for each job. With the knowledge of correct tool use and knowing the limitations of tools,
along with some common sense, many accidents can be prevented.
Special service tools are available for specific jobs and should be used when recommended. The use of these tools
will save time and prevent damage to parts.
1.7 Specific safety precautions
Batteries
When servicing batteries, always wear protecting clothing and glasses.
1 The electrolyte in batteries is a sulphuric acid solution which is fatal if it hits your eyes, and which can cause
burns if it contacts your skin. Therefore, be careful when handling batteries, e.g. when checking the charge
condition.

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2 Install a sign prohibiting fire, open flame and smoking at the post where batteries are being charged.
3 When batteries are being charged, an explosive gas mixture forms in the cells and might escape through the
vent holes in the plugs. Thus an explosive atmosphere may form around the battery if ventilation is poor, and
can remain in and around the battery for several hours after it has been charged. Therefore:
• never smoke near batteries being, or having recently been, charged,
• never break live circuits at battery terminals, because a spark usually occurs.
4 When connecting an auxiliary battery (AB) in parallel to the unit battery (CB) with booster cables: connect the
+ pole of AB to the + pole of CB, then connect the - pole of CB to the mass of the unit. Disconnect in the
reverse order.
Pressure vessels
Maintenance/installation requirements:
1 The vessel can be used as pressure vessel or as separator and is designed to hold compressed air for the
following application:
• pressure vessel for compressor,
• medium AIR/OIL,
• and operates as detailed on the data plate of the vessel:
• the maximum working pressure ps in bar (psi),
• the maximum working temperature Tmax in Centigrade (Fahrenheit),
• the minimum working temperature Tmin in Centigrade (Fahrenheit),
• the capacity of the vessel V in l (US gal, Imp gal, cu.ft).
2 The pressure vessel is only to be used for the applications as specified above and in accordance with the
technical specifications. Safety reasons prohibit any other applications.
3 National legislation requirements with respect to re-inspection must be complied with.
4 No welding or heat treatment of any kind is permitted to those vessel walls which are exposed to pressure.
5 The vessel is provided and may only be used with the required safety equipment such as manometer,
overpressure control devices, safety valve, etc.
6 Draining of condensate shall be performed daily when vessel is in use.
7 Installation, design and connections should not be changed.
8 Bolts of cover and flanges may not be used for extra fixation.
Safety valves
Operating & Maintenance
Only trained and technically competent personnel should consider overhaul, re-set or performance testing of safety
valves.
The safety valve is supplied with either a lead security seal or crimped cover to deter unauthorised access to the
pressure regulation device.
Under no circumstances should the set pressure of the safety valve be altered to a different pressure than that
stamped on the valve without the permission of the installation designer.
If the set pressure must be altered then use only correct parts supplied by Seetru and in accordance with the

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instructions available for the valve type.
Safety valves must be frequently tested and regularly maintained.
The set pressure should be periodically checked for accuracy.
When fitted, the lifting device should be operated at pressures not less than 75% of the set pressure to ensure free
and easy movement of internal parts.
The frequency of tests is influenced by factors such as the severity of the operating environment and aggressiveness
of the pressurised medium.
Soft seals and springs should be replaced as part of the maintenance procedure.
Do not paint or coat the installed safety valve.
(see also 4.5 Preventive maintenance schedule for the compressor).

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2 Leading particulars
2.1 General description
The XAMS1150 CdH is a silenced, single-stage, oil-injected screw compressor, built for a nominal effective
working pressure of 8.6 bar (125 psi).
• Engine
The compressor is driven by a liquid-cooled diesel engine.
The engine’s power is transmitted to the compressor element through a heavy-duty coupling.
• Compressor
The compressor casing houses two screw-type rotors, mounted on ball and roller bearings. The male rotor,
driven by the engine, drives the female rotor. The compressor delivers pulsation-free air.
Injected oil is used for sealing, cooling and lubricating purposes.
• Compressor oil system
The oil is boosted by air pressure. The system has no oil pump.
The oil is removed from the air, in the air/oil vessel at first by centrifugal force, secondly through the oil
separator element.
The vessel is provided with an oil level indicator.
• Regulation
The compressor is provided with a continuous regulating system and a blow-off valve which is integrated in the
unloader assembly. The valve is closed during operation by air receiver pressure and opens by air receiver
pressure via the compressor element when the compressor is stopped.
When the air consumption increases, the air receiver pressure will decrease and vice versa.
This receiver pressure variation is sensed by the regulating valve which, by means of control air to the unloader
and an electronic engine speed regulator, matches the air output to the air consumption. The air receiver pressure
is maintained between the pre-selected working pressure and the corresponding unloading pressure.
• Cooling system
The engine is provided with a liquid-cooler and intercooler and the compressor is provided with an oil cooler.
(For available options see chapter 7 Available options.)
The cooling air is generated by a fan, driven by the engine.
• Safety devices
A thermal shut-down sensor protects the compressor against overheating. The air receiver is provided with a
safety valve.
The engine is equipped with low oil pressure and high coolant temperature shut-down sensors.

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• Frame and axles
The compressor/engine unit is supported by rubber buffers in the frame.
The standard compressor has a towbar with parking brakes.
For available options see chapter 7 Available options.
• Bodywork
The bodywork has openings for the intake and outlet of cooling air and hinged doors for maintenance and
service operations. The bodywork is internally lined with sound-absorbing material.
• Lifting beam
A lifting beam is accessible when a small door at the top is opened.
• Control panel
The control panel grouping the air pressure gauge, control switch etc., is placed at the left hand/ rear end corner.
• Data plate
The compressor is furnished with a data plate showing the product code, the unit serial number and the working
pressure (see chapter 9Dataplate).
• Serial number
The serial number is stamped in at the front of the compressor on the upper edge of the frame behind the right
door. It is also mentioned on the data plate and inside the control box.

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2.2 Markings and information labels
Dangerous outlet gases.
Danger, heat flat.
Electrocution hazard.
Atlas Copco synthetic compressor oil.
Atlas Copco mineral engine oil.
Manual.
Read the instruction manual before working on the battery.
Reset fuse.
On / off button.
Prohibition to open air valves without connected hoses.
Rotation direction.
Inlet.
Outlet.
Compressor oil drain.
Read the instruction manual before starting.
Service every 24 hours.

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Warning! Part under pressure.
Do not stand on outlet valves.
Start-Stop indication of switch.
Do not run the compressor with open doors.
Lifting permitted.
Use diesel fuel only.
5.5 bar (80 psi) Tyre pressure.
Sound power level in accordance with Directive 00/14/EEC (expressed in dB (A)).
Fork lifting permitted.
Don’t lift here.
Read the instruction manual before lifting.
Filler cap coolant.
Read the instruction manual before topping up
with coolant.
Service point.
Circuit breaker.
Do not run the compressor when the baffles are not in the right position.