Atlas Copco XAS 175 Dd Instruction Manual Download Page 12

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XA(S)175 Dd

Fig. 2.3

Speed regulating and unloading system

OCc

DETAIL

6
7

OFc

BDV

Max.

Min.

OLG

DP1

DP4

DP3

DP2

SEE DETAIL

OCe

PEED REGULATING AND UNLOADING SYSTEM

Air filter (for engine and
compressor)

Air receiver

Air outlet valves

BDV

Blow-down valve

Bleeder valve

Compressor element

Check valve

DP1

Drain plug, oil tank

DP2

Drain plug, oil stop valve

DP3

Drain plug, check valve

DP4

Drain plug, oil cooler

Engine

Fan

Filler plug, compressor oil

Flow restrictor, oil scavenging line

Loading valve

Minimum pressure valve

OCc

Oil cooler compressor

OCe

Oil cooler engine

OFc

Oil filter, compressor

OLG

Oil level gauge

Oil separator element

Oil stop valve

Working pressure gauge

Regulating valve

Scavenge line

Speed regulator

Safety valve

Air/oil temperature gauge

Throttle valve

Unloader valve

Vacuum indicator

Venting valve

Check nut, ball joint

Ball-and-socket joint

Piston rod

Piston

Engine speed control lever

Adjusting wheel, working pressure

Check-nut, adjusting wheel

Spring

Summary of Contents for XAS 175 Dd

Page 1: ... fšr transportabla kompressorer 163 Istruzioni per l uso di compressori mobili 195 Bruksanvisning for mobil kompressorer 227 Instruktionsbog til mobile kompressorer 259 BÈ Ï Ô Ô ËÁÈÒÓ ÁÈ ÊÔÚËÙÔ Û Ì ÈÂÛÙ 291 Manual de instru es para compressores port teis 323 SiirrettŠvien kompressorin ohjekirja 355 Parts list Ð Onderdelenlijst Ð Liste de pi ces Ð Ersatzteilliste Ð Lista de las partes Ð Reservdelsf...

Page 2: ...XA S 175 Dd 2 ...

Page 3: ...during maintenance and repair 6 Tool applications safety 7 Specific safety precautions 7 Batteries 7 Ether fuel systems 7 Pressure vessels 7 Safety valve 8 Injury prevention 8 2 Leading particulars 9 2 1 Description of safety pictograms used in this manual 9 2 2 General description 9 2 3 Markings and information labels 10 2 4 Main parts 11 2 5 Air flow 13 2 6 Oil system 13 2 7 Speed regulating and...

Page 4: ...d servicing procedures 24 5 1 Adjustment of the regulating valve 24 5 2 Air filter engine compressor 25 5 2 1 Main parts 25 5 2 2 Recommendations 25 5 2 3 Cleaning the dust trap 25 5 2 4 Replacing the air filter element 26 5 3 Air receiver 26 5 4 Safety valve 26 5 5 Fuel system 26 5 6 Brake option adjustment 27 5 6 1 Brake shoe adjustment 27 5 6 2 Brake cable adjustment 27 5 6 3 Test procedure of ...

Page 5: ...e attached to each of the isolating valves 8 Before a machine is being repaired 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...

Page 6: ...r outlet valve before connecting or disconnecting a hose Ascertain that a hose is fully depressurized before disconnecting it When blowing through a hose or air line ensure that the open end is held securely A free end will whip and may cause injury Never play with compressed air Never apply it to your skin or direct an air stream at people Never use it to clean dirt from your clothes When using i...

Page 7: ...rolyte 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 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 cell...

Page 8: ...e necessary steps to eliminate the risk of personnel injury 7 Before lifting machines all loose parts which could be liable to fall down shall be removed or secured pivoting parts such as doors towbars etc shall be safely immobilized 8 To lift heavy parts a hoist of ample capacity tested and approved according to local safety regulations shall be used 9 When lifting machinery or parts with one or ...

Page 9: ...ion 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 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 com...

Page 10: ...3 MARKINGS AND INFORMATION LABELS Lifting permitted diesel Use diesel fuel only Sound power level in accordance with Directive 84 533 EC expressed in dB A Horizontal towbar position required in case of coupling Start Stop indication of switch Do not run the motor with open doors Danger heat flat Electrocution hazard PAROIL M Atlas Copco compressor oil Read manual Read the instruction manual before...

Page 11: ... EP Exhaust pipe F Fan FC1 Filler cap engine oil FC2 Filler cap fuel tank FF Fuel filter FP Filler plug compressor oil FT Fuel tank FU Fuel pump ML Manual stop lever MV Minimum pressure valve OCc Oil cooler compressor OFc Oil filter compressor OFe Oil filter engine OLG Oil level gauge RV Regulating valve SR Speed regulator SV Safety valve TB Towbar TG Air outlet temperature gauge UV Unloader valve...

Page 12: ...eck valve DP4 Drain plug oil cooler E Engine F Fan FP Filler plug compressor oil FR Flow restrictor oil scavenging line LV Loading valve MV Minimum pressure valve OCc Oil cooler compressor OCe Oil cooler engine OFc Oil filter compressor OLG Oil level gauge OS Oil separator element OV Oil stop valve PG Working pressure gauge RV Regulating valve SL Scavenge line SR Speed regulator SV Safety valve TG...

Page 13: ...d from the air as described in section 2 5 The oil that collects in the bottom of the oil separator element is returned to the system through scavenging line SL which is provided with a flow restrictor FR The oil filter by pass valve opens when the pressure drop over the filter is above normal because of a clogged filter The oil then by passes the filter without being filtered For this reason the ...

Page 14: ...rcuit breaker 10A G1 Alternator G2 Batteries H1 Alternator charging indicator lamp H6 Alarm lamp shut down switches K0 Starter solenoid K1 Shut down relay compressor temperature and engine oil pressure K6 Starter motor protection relay K8 Shut down relay engine temperature V belt protection and fuel level M1 Starter motor P1 Fuel level gauge P3 Hour meter S1 ON OFF switch S2 Override start switch ...

Page 15: ...pressure has built up sufficiently engine oil pressure switch S5 closes its contact energising relay K1 Relay K1 makes contact 30 87 Lamp H6 goes out 5 Releasing override start switch S2 interrupts overriding of the shut down circuit Solenoid Y1 hourmeter P3 and relay K1 remain energised over relay K1 contact 30 87 and over relay K6 contact 30 87a Engine safety shut down 1 If engine oil pressure s...

Page 16: ...n not exceeding 15 If the compressor is parked on sloping ground immobilize the compressor by placing wheel chocks in front of or behind the wheels Locate the compressor upwind away from contaminated wind streams and walls Avoid recirculation of exhaust air from the engine This causes overheating and engine power decrease 3 1 2 TOWING INSTRUCTIONS Fig 3 3 Label on towbar towing instructions Before...

Page 17: ...sary to the upper mark on dipstick Consult the Engine Operation Manual for the type and viscosity grade of the engine oil 3 Check the level of the compressor oil The pointer of oil level gauge OLG Fig 2 3 should register in the green range Add oil if necessary See section 4 3 for the oil to be used Before removing oil filler plug FP Fig 2 3 ensure that the pressure is released by opening an air ou...

Page 18: ...m Wait a few minutes between each starting attempt If the engine fails to start three times consult the Engine Operation Manual to localise the cause and remedy For starting in extremely cold conditions consult the Engine Operation Manual 4 Run the engine a few minutes at no load to warm up During this period check the pressure on gauge PG 5 When the engine is running smoothly press loading valve ...

Page 19: ...has been restarted or the contact is turned off also when due to cooling off the thermocontact has closed again 3 4 DURING OPERATION The doors must be closed during operation and may be opened for short periods only Regularly carry out following checks 1 That regulating valve RV is correctly adjusted i e starts decreasing the engine speed when reaching the preset working pressure in the receiver 2...

Page 20: ...Tyre pressure Check Check Leaks in air oil or fuel system Check Check Oil cooler package Clean Clean Engine minimum and maximum speeds Check Check Torque of wheel bolts Check Check Brake system if installed Check Adjust Check Adjust Safety valve Test Door Hinges Grease Grease Towing eye shaft or ball coupling and its shaft Grease Grease Shut down switches Check Pressure drop over separator element...

Page 21: ...sult Atlas Copco for more information concerning the recommended oil and service intervals 4 4 OIL LEVEL CHECK Never mix oils of different brands or types Use only non toxic oils where there is a risk of inhaling delivered air 4 4 1 CHECK ENGINE OIL LEVEL Consult also the Engine Operation Manual for the oil specifications viscosity recommendations and oil change intervals See schedule Check engine...

Page 22: ...element Screw it into place until the gasket contacts its seat then tighten one half turn only 5 Fill the air receiver until the pointer of the oil level gauge 4 registers in the upper extremity of the green range Take care that no dirt drops into the system Reinstall and tighten the filler plug 6 Run the unit at no load for a few minutes to circulate the oil and to evacuate the air trapped in the...

Page 23: ... must be open i e plugs and or cover removed Use a commercial automatic battery charger according to its manufacturer s instructions Apply with preference the slow charging method and adjust the charge current according to the following rule of thumb battery capacity in Ah divided by 20 gives safe charging current in Amp 4 7 4 BATTERY MAINTENANCE Keep the battery clean and dry Keep the electrolyte...

Page 24: ...ve DP3 Drain plug check valve DP4 Drain plug oil cooler E Engine F Fan FP Filler plug compressor oil FR Flow restrictor oil scavenging line LV Loading valve MV Minimum pressure valve OCc Oil cooler compressor OCe Oil cooler engine OFc Oil filter compressor OLG Oil level gauge OS Oil separator element OV Oil stop valve PG Working pressure gauge RV Regulating valve SL Scavenge line SR Speed regulato...

Page 25: ... the outlet valve s to decelerate the engine to its unloading speed The piston rod of the speed regulator should then be in its full in position and piston 4 rest against its stop in the regulator 5 Check the unloading speed Adjust if necessary the length of the speed regulator operating rod by means of ball and socket joint 2 Tighten the check nut 1 of the ball joint after adjustment 1 Never oper...

Page 26: ... cocks once the water has been separated Operate the priming lever 10 on the fuel lift pump FU until air free fuel emerges at the released vent plugs Retighten the vent plugs Replacing the filter s 1 Unscrew the filter s 2 Clean the adapter head sealing surface s lightly oil the gasket s of the new filter s and screw it them onto the header by hand Next securely tighten 3 Air vent the fuel system ...

Page 27: ... other wheel 4 Adjust the brake cables as described below 5 6 2 BRAKE CABLE ADJUSTMENT 1 Reconnect the brake cables Fig 5 6 2 With the towing eye pulled out and the hand brake lever Fig 5 7 in the downward position turn adjusting nut and brake cable nuts Fig 5 6 4 clockwise until there is no slack in the brake mechanism The equalizer Fig 5 6 6 must remain perpendicular to main brake cable Fig 5 6 ...

Page 28: ...hing S1 to I and depressing S2 Possible faults a Discharged or defective battery b Loose battery cable s or oxidised terminals c Loose connection or damaged wiring d Switch S1 defective e Circuit breaker F1 defective a Lamp H1 blown b Alternator regulator defective a Lamp H6 blown b See fault 1d a Low battery output b Start switch S2 defective c Alternator output relay K6 defective d Start solenoi...

Page 29: ...e relay K8 out of order a Hour meter P3 defective a Air leaks in regulating system b Regulating valve RV incorrectly set or defective c Unloader valve UV or its actuating piston stuck a Air consumption exceeds capacity of compressor b Choked air filter element AF c Regulating valve RV incorrectly set d Engine not up to full speed Corrective actions a See remedy 4b b Check solenoid and its valve co...

Page 30: ...r OFc clogged h Oil stop valve OV stuck in closed position Corrective actions e Remove and inspect valve Replace damaged or worn O rings f Have element removed and inspected by an Atlas Copco Service representative g Disconnect hose between throttle valve housing and loading valve from the latter and connect hose to independent compressed air line Repeatedly admit air and listen for sound of valve...

Page 31: ... system a Regulating valve RV out of order b Air intake throttle valve TV stuck in closed position a Speed regulator SR defective a Fuel tank FT contains insufficient fuel b Engine oil pressure too low c Compressor or engine overheating Corrective actions a Remove and dismantle Correct if necessary b See remedy 11g c See remedy 12b a Remove and dismantle Correct if necessary b See remedy 11g a Rem...

Page 32: ...ut undercarriage Towing eyes Atlas Copco DIN Ball NATO Towbar support Jockey wheel Road signalisation Full Semi Air quality equipment Aftercooler water separator Aftercooler water separator PD QD fine filters Aftercooler water separator PD QD reheater Lubricator Safety Wheel chocks Silencing foam Spark arrestor Cold start 20 C kit Customer colour single double triple ...

Page 33: ...ssor temperature C 116 120 Safety valve opening pressure EC type bar e 9 5 8 3 COMPRESSOR ENGINE SPECIFICATIONS Compressor type XA S 175 Dd Reference conditions 1 Absolute inlet pressure bar 1 2 Relative air humidity 0 3 Air inlet temperature C 20 4 Normal effective working pressure bar 12 The inlet conditions are specified at the air inlet grating outside the canopy Performance data 1 Engine shaf...

Page 34: ...Unit serial number 4 Name of manufacturer 5 EEC or national type approval number 6 Vehicle identification number 7 A Maximum permitted laden weight of the vehicle B Maximum permitted road weight of the vehicle C Maximum permitted laden weight of the towing eye 8 Working pressure 9 Speed 10 Engine power 11 Manufacturing year 12 EC mark in accordance with Machine Directive 89 392 EEC ATLAS COPCO AIR...

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