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User Manual for Screw Compressors

1. MODEL KW HP CABLE SIZE CIRCUIT BREAKER ERA 20 15 20 3x6mm N E 40A ERA 25 18 25 3x10 mm N E 40 A ERA 30 22130 3x10 mm N E 50A ERA 40 30 40 3x16 mm N E 63 A ERA 50 37 50 16 mm 80 60 45 60 3x25mm N E 100 A ERA 60S 45 60 25 100 A ERA 75 55 75 3 35 125 100 751100 3x50mm N E 160 A ERA 100S 751100 50 160 125 90 125 70mm N E 200 A ERA 150 110 150 3 95 250A ERA 1505 110 150 3 95 250A ERA 180 132 180 120 N 250A ERA 220 160 220 3 x 120 N 300 270 200 270 3x185mm N E 400 A ERA 340 250 340 3 x 300 mm N 500 A Specified models include all of ERA ERA D ERA GD ERA VST ERA DVST ERA GDVST series compressors N Neutral E Earth Ground NOT ES 1 POWER SUPPLY VOLTAGE FOR COMPRESSORS IS SUPPOSED AS 380V AC 2 IF THE CABLE LENGTH IS LONGER THAN 50 M PLEASE USE ONE STAGE BIGGER CABLE SIZE 3 DO NOT USE ADDED AFFIXED CABLES 4 DO NOT EXTEND POWER SUPPLY FROM COMPRESSOR S STARTER BOX TO ANOTHER DEVICE Table 2 Power MOTOR LUBRICATION GREASE GREASE GREASE SPEED PERIOD MOUNT CHANGETIME ADDITION GREASE TYPE kW rpm hour gr hour gr Grease as the amount given on the table must be added to the bearing balls and to the bearing
2. seen enne enne 6 A OIL FILTER ELEMENT CHANGE B ATR INTAKE FILTER ELEMENT 7 AIR INTAKE FILTER ELEMENT INSPECTION 7 D SEPARATOR ELEMENT CHANGE tesaicsiscssssecesssscetssssonestiesoesessosed 7 E CONTROL SYSTEM ADJUSTMENT cersetori 8 POLY V BELT REPLACEMENT AND 7 8 G OIL RETURN SCAVENGE LINE MAINTENANCE eee 29 H MOISTURE SEPARATOR MAINTENANCE AND DRAIN TIME SETTINS eee 9 5 8 SERVICE INSTRUCTIONS FOR THREE PHASE MOTORS 2 10 5 8 ANAEROBIC SEALANT LOCTITE USAGE 2 10 5 8 PIPING AND INSTRUMENTATION 5 9 INVERTER MAINTENANCE AND INSPECTION FOR ALL VST COMPRESSORS 12 5 10 MAINTENANCE RECORD on oeste ene eda o ua rea 13 SECTION 6 TROUBLESHOOTING 6 1 INTRODUCTION MF 14 6 2 TROUBLESHOOTING ess 222055500 14 SECTION 7 ANNEX TABLES AND ILLUSTRATIONS 7 1 COOLING AIR EXHAUST DUCES es pete oe etuer voe ep a a AA ye a eee ee reed baee ev ree ia eee 1 2 CABLE SIZES FUSES CIRCUIT BREAKERS 7 3 MOTOR BEARINGS
3. 22 VENTILATION AND COOLING Hr 3 2 3 SERVICE AIR PIPING 2 4 OIL LEVEL CHECK eee 2 5 ELECTRICAL PREPARATION 2 6 MOTOR ROTATION DIRECTION CHECK 3 ccecccseccssesesessnsoscoabtesasnevessovecevasecsesssiecosoasssessssesouansebavedbonedtesebretebasaebose aS 3 SECTION 3 SPECIFICATIONS 3 1 55 HIERO EQUO CORE FOE A EUER e EA TERR 4 SECTION 4 COMPRESSOR SYSTEMS 4 1 INTRODUCTION tet de E IERI asa ata e eese eden 2 4 2 DESCRIPTION COMPONENTS 4 3 COMPRESSOR UNIT FUNCTIONAL DESCRIPTION 5 4 4 COOLING AND LUBRICATION SYSTEM FUNCTIONAL DESCRIPTION 5 4 5 COMPRESSOR DISHARGE SYSTEM FUNCTIONAL DESCRIPTION eese n en nnn 5 4 7 AIR INLET SYSTEM FUNCTIONAL DESCRIPTION 4 8 CONTROL SYSTEM FUNCTIONAL 2 SECTION 5 MAINTENANCE 5 1 A 5 2 DAILY OPERATION 5 4 MAINTENANCE 5 5 OIL FILTER MAINTENANCE 5 6 SEPARATOR MAINTENANCE iini tio piensen ive 5 7 PARTS REPLACEMENT AND ADJUSTMENT PROCEDURES
4. p Wrong or P1 pressure sensor for operative or defective you can set the pressure to minimum by turning the please read symptom 5 together some electronic control panel models with two pressure sensors fault defective and it must be changed Minimum pressure valve defective could not open Separator element is plugged blocked The shut off valve at the delivery line of the compressor outside the compressor is left closed adjustmennt screw If presure switch does not change it s contact status between open and close according to safety pressure setpoint the switch is Inspect gasket and o rings of the MPV change if it is required Read 7 E Open the shut off vasve and restart the compressor After reset 16 10 SYMPTOM High temperature fault shut downs compressor A B C 11 Safety valve opens TaS 12 Compressor shut downs itself when working pressure is reaching to the maximum working pressure 13 Compressor does not stop in auto mode POSSIBLE CAUSE The temperature gauge combistat or sensor setting is wrong Ambient temperature too high Ventilation openings and cooling air flow is not enough adequate dirty Or inside oil flow sections of Cooling air exhaust duct is too long or it has narrow small section than required Thermostatic valve defective For compressor with electromechanic co
5. Figure 5 3 SEPARATOR ELEMENT amp TANK E CONTROL SYSTEM ADJUSTMENT refer to Figure 5 4 The compressor is delivered as the control system is adjusted from the factory according to the data plate of the compressdor If a new adjustment is requested or required prior to adjusting the control system it is necessary to determine the desired operation pressure range and also the maximum working pressure at which the compressor is to operate The pressure must not exceed the maximum working pressure which is stamped on the compressor data serial number plate Start the compressor with the shut off valve closed or slightly cracked open Compressor will make a passing between loaded and unloaded running modes Observe the line pressure on the control panel display or P2 pressure gauge If the control sysytem does not unload or it unloads the compressors prior to the desired pressure adjust the working pressure switch or working pressure setpoint of the controller if the compressor equipped with electronic control panel as required DO NOT FORGET THAT WORKING PRESSURE SWITCH IS A SENSITIVE DEVICE AND WRONG PRESSURE SETTING MAY CAUSE DAMAGE OF THE COMPRESSOR FOR PRESSURE RANGE MAX WORKING PRESSURE ADJUSTMENT 1 See two adjusting screws on the pressure switch to set high and differential values of the working pressure ranges of the compressor The screw on the right hand side when looking from the front side of the pressur
6. Should any questions arise in spite of the instructions in this manual or if you have any inquiries concerning this manual or wish to obtain additional copies please do not hesitate to contact our Technical Service Department so they will glad to help you Make sure the manual is kept near the compressor and thus always at hand for the operaating personel This compressor should be operated and used only by trained and qualified person No person is allowed to operate the compressor even for only a short time without adequate training The owner should clearly establish who is responsible for assembling disassembling and reassembling the compressor for putting it into operation set up operating and servicing the compressor The owner is obligated to operate the compressor only if it is in a safe condition Major repairs must only be carried out by the manufacturer or by specially authorized qualified personel The operator is obligated to immediately remedy if authorized or report any defects or alterations that may affect the safety of the compressor Product safety signs or decals should be periodically inspected and cleaned or replaced when they no longer meet the legibility requirements for safe viewing at a reasonable distance Make sure that enclosures removed for maintenance or repairs are refitted before restarting the compressor DO NOT remove alter or deactive any machine parts such as safety valve belt guard fan guard combi
7. t must be seen that liguid draining discharge is finished and air is coming discharging out from the vessel s drain way while the drain way is open and just before it will being closed That is for preventing condensate water to be collected more in the vessel for preventing significant quantity of compressed air loss and The quantity of water condensate which is collected in the moisture separator vessel in the unit of a specified time depends on the installation environment ambient conditions as moisture content and temperature and also loading conditions rates of the compressor DRAIN TIMER Figure 5 6 MOISTURE SEPARATOR Optional Stop the compressor and wait for all internal pressure is released 0 bar pressure must be shown P1 pressure gauge or the display for P1 internal pressure before any maintenance or repairs In order to service open the moisture separator vessel by removing fixing bolts between the housing and the cap Clean the vessel and the internal parts before reassembling Use a new o ring lubricate it with grease then reassemble the moisture separator vessel Check the drain soleonid valve clean with compressed air or replace if it is neccessary For float type drain device there is no timer function for draining it operates with increased water condensate level So float device is cleaned for keeping or improving it s own functionality and service life There is not any timer or s
8. 60 Hz RPM KW see A 380 400 V 50 60 Hz RPM KW ens A nog m h Pa m kcal h The first filling type of oil m RPM Hz Hz Natural Frequency of Beltspan 1 Only for VST DVST GDVST type variable speed ERA compressors 2 Only for belt driven ERA compressors 3 Only for direct gear driven ERA compressors Above specifications are for information only ERAPOWER reserves design modification rights without giving information before Please read troubleshooting section and the last section of this manual for troubleshooting and spare part ordering procedure Please state the model name and the serial number when you will order spare parts for your compressor because of it will be helpful for your company and ERAPOWER to supply and get spare parts as correct and quickly 4 1 INTRODUCTION ERAPOWER oil injected rotary screw air compressors are heavy duty air compressors with proved quality durability and reliability 4 2 DESCRIPTION OF COMPONENTS ERA ERA D ERA GD ERA VST ERA DVST ERA GDVST series rotary screw air compressors consist of a compressor unit air end electric motor starter drive system with belt pulley or coupling air inlet system compressed air discharge system compressor lubrication and cooling system control panel and controller unit oil
9. LUBRICATION SCHEDULE een n enn nen eren nenne 22 7 4 RECOMMENDED SPARE PARTS AND SERVICE OPERATIONS Hmm 23 SECTION 8 PROCEDURE FOR ORDERING PARTS 7 csset tenentes 24 PLEASE READ THEPART LIST BOOK FOR SPARE PART LISTS WITH EXPLODED VIEW ILLUSTRATIONS Dear ERAPOWER Compressor User Your compressor has been produced with advanced technology and the latest engineering standards with the experiments of years It is mostly problem free efficiency and reliable if operated properly Security must be main consideration on use as production ERA air screw compressors has been made to produce the compressed air which is used for air tools machines and process Manufacturer will not be liable for applications outside the scope of the machine intended use and this will void the warranty However any machine might be a potential source of danger if improperly handled or use by unqualified untrained or careless personel or if used the scope of its intended use Therefore be sure to observe all instructions given in this manual and strictly comply with all local safety and accident prevention rules and regulations DO NOT attempt to make any handling locating mounting maintaining and repairing process unless read and understand this manual carefully Your compressor may deviate a few details from the illustrations shown in this manual This is no importance for the operation of the machine
10. Lal Use appropriate cable with recommended size in recommended length To understand check that measure incoming voltage lines phases while the B Lowincomine voltase compressor is in stopped state and start the compressor while measuring ee continues If voltage is reducing to 360 volts or below the problem source is main power network or installed power capacity of your factory workshop If ambient temperature is too low under 5 C or lower increased cold oil The ambient temperature is too low viscosity can cause increased resistance load to run of the compressor Ensure the ambient temperature in installation area is above 5 C The compresor has been re started When the compressor has been stopped an air blow down or releasing sound noise is heard Wait for the time of this air discharge sound noise ends D before the internal pressure is full 3 released since the last stop or verify all of the internal pressure is released by pressing the control i button or by looking at internal pressure gauge shows ZERO 11 45 kW models The air inlet valve is open at the beginning of te start up 2 Compressor runs then closes in WYE stage of start If it does not closes at this time stage difficultly there is a mechanical problem the control air can not move the valve head Verify the valve head moves easily toward and backward by hand when the compressor is stopped and internal pressure is ZERO If the valve head m
11. air separation system all mounted in a steel cabinet enclosure In addition to above mentioned components for VST DVST and GDVST models of ERA compressors only an interver device drive is used to change main motor speed as a variable speed drive application for continuous and sensitive variable capacity regulation The main motor rotates drives the compressor unit air end by belt pulley system on ERA and ERA VST models by coupling on ERA D GD DVST GDVST models The compressor unit the air end compresses air by help of oil film and delivers it to the separator tank the oil air receiver The separator element in the tank separates air from the oil Oil is collected at the bottom of the tank and it is forced to pass through the oil cooler where it will be cooled then the oil filter and finally it is injected into the compressor unit at the injection port orifice while the compressed air passes through minimum pressure valve and to out of the compressor then to the air receiver of the service line The fan blows cooling air on to the oil air combined cooler section to cool oil before returning it into the compressor unit and also to cool the compressed air in the aftercooler section of the combined cooler 4 3 COMPRESSOR UNIT FUNCTIONAL DESCRIPTION ERAPOWER rotary screw air compressors all of ERA series feature the oil injected type compressor unit Air End which consists of two rotors and a housing provides positive displacem
12. restricted in such circumstance If air is contamined due to the environment around of the compressor has fine dusts and abrasive gases fumes as in sand blasting workshops chemical installations plants contaminated inlet air reduces the Periyodik bak mlar s ras nda t m mekanik ba lant lar n d zg nce s k ld n kontrol edin zellikle motor vida ve fan gibi ekipman ba lant lar n n s k l can ve mal g venli i a s ndan b y k nem ta r For belt driven compressors Read 14 F Also stop the compressor and check alignment of belt pulleys by using a proper template If pulleys are misaligned correct the aligment defect by following described belt tensioning and alignment procedure in the Read 2 G A possible cause is the air inlet valve does can not perform by pass function while running off load Another possible cause is plugged scavenge line Call the service company C Solenoid valve defective or plugged Clean if the diaphragm control air line is plugged D Solenoid valve arrangement plugged Clean the by pass bleed air ways A 21 temperature is Read sysmptom 10 Different oil is filled at the last oil Check the oil which is added at the last If wrong type oil is used filled drain B the oil replace oil filter and separator element then add correct type oil change Call the service company if the problem continues C The compressor starts runs for short Extend ru
13. separator tank through the MPV Replace MPV gasket and o rings B Air inlet valve defective The air inlet valve does can not close exactly Read 5 B For belt driven compressors Check the belt tension you can understand a slcak belt by observing the movement of the belt Correct aligned belt with correct tensioning will not operate by vibrating Tighten the belt if it is required as described on belt tensioning and repcament subject in the maintenance section or call the service company Also if ribs of the belt is contaminated with oil it causes belt slipping and while the compressor is running with rising pressure load a smoke appears with very high belt noise sound You can prevent this circumstance to continue by using a powder type which is used for babies Apply the powder on to oil contaminated ribs of the belt then clean the powder on the belt surface This circumstance can be understood with high abnormal running noise from the air end Call the authorized local service company for repair Call the authorized local service company for repair If any piece of cloth was dropped into the separator tank it can cause to restriction blocking through oil circulation system if it has been forgotten in the separator tank Please be careful while using a cloth to clean inside of the compressor and it s components If the oil filter is not an original oil filter resistance to oil flow may be higher than original then oil flow is
14. shut downs Overload relay is defective or overload currents through the thermic overload relay are in normal limit and balanced compressor B setting i on each phases If overload relay cuts the current circuit while setpoint is g is wrong I correct but measured current is below than setpoint the relay is defective read symptom 2 if and must be changed it occurs during If the compressor has electronic control panel or it is VST please read the start up electronic control panel manual manual fascicle C Low incoming voltage Read 2 B D Compressor running with pressure Read symptom 5 above max working pressure setpoint When the compressor running on near to full load check the pressure 5 differences between P1 and P2 gauge pressures If internal P1 and delivery E Separator element is plugged blocked P2 pressure differential has reached to 1 1 5 bar level that means the separator element is blocked and it needs to be changed F Mechanic failure in the air end Read 4 E Verify the fan motor thermic overload relay is adjusted correctly according to the fan motor s nominal power and current limit By using a clamp A Overload relay is defective or overload ammeter while the fan is running observe values of currents through the setting is wrong thermic overload relay are in normal limit and balanced on each phases If overload relay cuts the current circuit while setpoint is correct but measure
15. the reports about actual field applications and extensive 3 Check for parts damaged by heat or an electrical short circuit testing done at the factory It contains symptoms and usual causes usually apparent by discoloration or a burnt odor for the described problems All available data concerning the Should your problem persist after making the recommended check trouble should be systematically analysed before undertaking any consult your nearest ERAPOWER representative or the repairs or component replacement procedures A detailed visual ERAPOWER s factory inspection is worth performing for almost all problems IWARNING Take care of the performing any repairs or maintenance or troubleshooting process by trained and those who know what to do persons or by our company 6 2 TROUBLESHOOTING SYMPTOM POSSIBLE CAUSE REMEDY A Come 16 Mie Energise the compressor compressor B Line fuse blown Check the fuse For compressors with electronic control system phase sequence fault C Phase sequence is wrong prevents compressor to start and 0020 error message is diplayed The solution is to change sequence position of any two phases Motor protection relay cuts the energy Please check if the light on this relay Most common cause is a phase fault while compressor is running in where D Low incoming voltage or phase fault low voltage problem then the fault disappears after the compressor is or unbalanced phases stoppe
16. 0 hours for dusty environments 2 Every 6 months 3 Every oil replacement 5 6 SEPARATOR MAINTENANCE 1 As the 1 st in priority by using the control button or P1 and P2 pressure gauges check differential pressure value before or after the separator element Replace the separator element when the differential pressure is higher than 1 5 bar even if service hours less than 4000 hours If pressures are only shown on the controller display instead of gauges check differential pressure shown by the controller display or calculate it by using displayed internal and P2 delivery working pressure values When the separator element is blocked pressure differential is very high the control system displays an error message for it if this feature is set on 2 Replace the separator element regulary after it is used for one year Because of it s structure and performing method separator elements can not be cleaned instead of change 3 Replace the separator element at the end of every 4000 hours regularly if the compressor runs more than 4000 hours in one year If the operating environment is very dusty or ambient temperature is higher than 35 C separator element must be changed at the end of it s 3000 service hours 5 7 PARTS REPLACEMENT AND ADJUSTMENT PROCEDURES A OIL FILTER ELEMENT REPLACEMENT Figure 5 1 1 Stop the compressor and wait for all internal pressure is released 2 Using a strap wrench remove th
17. 15 seconds of the running the compressor being carried to the then oil foam flow Check the scavenge oil flow after 15 20 minutes again delivery line If scavenge oil return line is functioning properly most possible cause is damaged separator element You can see oil mixed to compressed air at the B The separator element defective deli po us pr elivery point as liquid oil or oil mist carried in pipe significant oil centent in drained condensate Change the separator element in such circumstance Oil leakage from oil circulation circuit Check the oil circulation line circuit fittings and connections tighen if any one is loose Call the service if you could not prevent the oil leakage Read fault message error code on the controller display E OC or E OL etc of the electronic control panel Wrong pressure setting or A Motor or power supply fault or wrong worn damaged motor bearings mechanical rotation resistance or power maximum working pressure setting supply voltage fault may cause to overload trip shutdown Please read the electronic control panel manual Operation manual fascicle for details Correct the malfunction by performing proper remedy methods of the cause Verify the main motor thermic overload relay is adjusted correctly according Main motor to the main motor s nominal power and current limit By using a clamp overload protection ammeter while compressor is running on full load observe values of
18. EPARATOR ELEMENT CHANGE SEPARATOR ELEMENT IF IT IS BLOCKED 6 CLEAN THE AIR INLET FILTER CHANGE THE FILTER ELEMENT IF IT IS REQUIRED 7 CHECK OIL HOSE CONNECTIONS for leakage AFTER THE FIRST 2000 HOURS OF OPERATION 1 CHANGE OIL AND OIL FILTER 2 CHECK ALL OIL HOSE UNIONS COUPLINGS 3 CHECK ALL OF ELECTRICAL POWER CONNECTIONS 4 ADD GREASE TO THE MOTOR BEARINGS SEE MOTOR LUBRICATION TABLE at the end of this manual Table 2 AFTER EVERY 4000 HOURS OF OPERATION 2 CHANGE THE O RING OF THE OIL FILLING PLUG 3 CHANGE SEPARATOR ELEMENT 4 CHECK ALL ENCLOSURE FRAME BOLTS 5 4 OIL MAINTENANCE 1 Shutdown the compressor and relieve all internal pressure 2 Remove the plug of the oil drain valve then connect the drain hose to the drain valve Remove the oil filter element Drain oil completely Fit the new oil filter element after filling the new oil in it Fill the new oil up to signed specified normal oil level into the separator tank Oil level limits are signed on a decal which is on the separator tank and at the behind of the transparent level tube 7 Fitand tighten all related parts connections fittings then start the compressor by observing running status carefully against possible leaks and other possible problems 5 5 OIL FILTER MAINTENANCE Replace the oil filter element and the gasket under any of the following conditions whichever occurs first 1 Every 2000 hours This may be reduced to 100
19. INDUSTRIAL AIR COMPRESSOR ERA SERIES 20 340 Hp PLEASE READ THIS MANUAL CAREFULLY BEFORE START UP THE COMPRESSOR INSTALLATION AND MAINTENANCE ERA ERA D ERA GD ERA VST ERA DVST ERA GDVST USER MANUAL 1 2009 3 Parca No 909001 E A ROTARY SCREW AIR COMPRESSOR ERA SERIES MODEL SERIAL NO S aoa dba dd WORKING PRESSURE qhuya MIN WORKING PRESSURE E spans bi apii t OIL TYPE OIL QUANTITY MOTOR POWER HP 224 kW USER START UP BY START UP DATE PLEASE READ THEPART LIST BOOK FOR SPARE PART LISTS WITH EXPLODED VIEW ILLUSTRATIONS SECTION 1 SAFETY 1 1 SEEN AT tectae mv ten n Ober d cinta nn hr caress ses RE ITO ERO 1 1 2 PERSONAL PROTECTIVE EQUIPMEN s 1 3 PRESSURE sd 1 4 FIRE AND EXPLOSION sg reto eren Pierre Loser feed tee tu esee orien FE 1 1 5 MOVING tetti tret teet FE re reae ot ie sass d 1 6 HOT SURFACES SHARP EDGES AND SHARP CORNER em 1 7 TOXIC AND IRRITATING SUBSTANCE sciis ai EAE AEAEE EE EA 2 1 8 ELECTRICAL SHOCK qe NESS 2 1 9 LIFTING AND HANDLING ser 2 1 10 OTHER IMPORTANT MAT TERS ttti rtr htt 2 SECTION 2 INSTALLATION 2 1 LOCATION OF COMPRESSOR
20. Kit inlet valve MER 122 Kit inlet valve MER 145 Kit inlet valve HDKG 85 120 160 gt x gt x gt lt gt lt Solenoid valve Kit contactor Kit minimum pressure valve lt lt lt DK DK lt lt gt DK gt gt gt lt gt lt gt lt gt lt lt gt lt gt lt gt lt gt lt gt lt gt lt gt lt gt lt gt lt 32000 4 years Kit scavenge Thermostatic valve element O ring oil filling plug Belt for belt driven compressors only gt x gt x gt lt gt lt gt lt Coupling for direct coupled compressors only Main motor bearings Fan motor bearings Air end revision Pressure sensor Temperature sensor Temperature gauge Working pressure switch Safety pressure switch SERVICE OPERATIONS Check oil level EVERY START UP Check Clean air filter element Every 1000 hours Check load unload working modes Every 1000 hours Check air and oil leakages Every 1000 hours Check scavenge line Every 1000 hours Clean separator moisture Every 2000 hours Clean strainer Every 2000 hours Check screws for electrical connections Every 2000 hours Clean cooler Every 4000 hours Check screws for c
21. Make sure forklift truck forks are fully engaged and tipped back prior to lifting or transporting the compressor Forklift no higher than necessary to clear obstacles at floor level and transport and corner at minimum practical speeds Make sure pallet mounted compressors are firmly bolted or otherwise secured to the pallet prior to attempting to forklift or transport them Never attempt to forklift a compressor that is not secured to its pallet as unev en floors or sudden stops may cause the compressor to tumble off possibily causing serious injury or property damage in the process H Lo Figure 1 1 LIFTING and HANDLING 1 10 OTHER IMPORTANT MATTERS A If the compressor enclosure is large enough to hold a person and if it is necessary to enter it to perform service adjustments inform other personel before doing so or else secure and tag the access door in the open position to avoid the possibility of others closing and possibly latching the door with personel inside Make sure all personel are out of compressor before closing and latching enclosure doors Do not leave any spare parts cleaning equipment tools and measuring control equipments in or on the compressor after any kind of adjustments and repairs Ensure that the whole guards are reconnected after any kind of repair and adjustments Ensure that themoving parts are not rubbing Do not leave elect
22. Owner SUI HR re Operators mH 1 1 GENERAL ERAPOWER Corporation and its subsidiaries design and manufacture all of their products so they can be operated safely However the responsibility for safe operation rests with those who use and maintain these products The following safety precautions are offered as a guide which if conscientiously followed will minimize the possibility of accidents throughout the useful life of this equipment The compressor should be operated only by those who have been trained and delegated to do so and who have read and understood this User Manual Failure to follow the instructions procedures and safety precautions in this manual can result in accidents and injuries Read this manual prior to installation start up and maintenance Do not make modifications on the compressor without a written approval by ERAPOWER group 1 2 PERSONAL PROTECTIVE EQUIPMENT Prior to installing or operating the compressor owners employers and users should become familiar with and comply with all applicable regulations and any applicable Federal State and Local codes standards and regulations relative to personal safety and protection equipment 1 3 PRESSURE RELEASE A Install an appropriate shut off ball valve between the compressed air outlet of the compressor and compressed air receiver tank inlet of the user s compressed air system The shu
23. aust fumes or other toxic noxious or corrosive fumes or substances Coolants and lubricants used in this compressor are typical of the industry Care should be taken to avoid accidental ingestion and or skin contact In the event of ingestion seek medical treatment promptly Wash with soap and water in the event of skin contact Consult the lubrication section of this manual for information pertaining to compressor oil fill 1 8 ELECTRICAL SHOCK A This compressor should be installed and maintained additional to this manual in full compliance with all applicable Federal State and Local codes standards and regulations including those of the National Electrical Code and also including those relative to equipment grounding conductors and only by personal that are trained qualified and delegated to do so Keep all parts of the body and any hand held tools or other conductive objects away from exposed live parts of electrical system Maintain dry footing stand on insulating surfaces and do not contact any other portion of the compressor when making adjustments or repair to exposed live parts of the electrical system Make all adjustments and repairs with one hand only if possible with the right hand so as to minimize the possibility of creating a current path through the heart Attempt repairs in clean dry and well lightened and ventilated areas only Do not leave the compressor unattended with open electrical enclosures If necessary
24. back cover after replacing the bearings and cleaning the bearing covers throughly Bearing front cover should be empty unconditionally SKF LGWA 2 type grease should be used In addition to equivalent types are indicated below Gres other than these types must not be used SHELL ALVANIA R3 ESSO UNIREX N3 Lubrication details are given on the lubricating label on the machine NOTE Bearing lubrication should be performed while the motor is running 22 Table 3 RECOMMENDED SPARE PARTS AND SERVICE OPERATIONS 250 or 500 hours 1000 2000 or 6 months 3000 4000 5000 6000 7000 8000 or 1 year 9000 10000 110000 12000 or 18 months 13000 14000 15000 16000 or 2 years 17000 18000 19000 20000 or 30 months 21000 22000 23000 25000 26000 27000 28000 or 42 months 29000 30000 31000 Syntetic Oil AIRMAX 46 Mineral Oil AIRMAX 2000 Air filter element Oil filter element Panel filter gt x lt gt gt lt gt lt gt gt x gt lt gt lt gt x lt gt gt lt gt lt gt gt x gt lt gt lt gt lt gt Separator element gt gt lt lt gt gt lt gt lt 24000 or 3 years gt x gt x gt lt gt lt gt lt gt x lt gt gt gt x gt x gt lt gt gt gt x gt x gt lt gt gt gt x gt x gt lt gt lt gt lt Hydraulic hoses Pneumatic hoses tubes
25. d To undersand that look at the light of the relay during start up if the light is ON at the beginning of motor start up but becomes OFF it is a 1 Compressor is pot low voltage problem staring If the control system displays a trip shutdown or alarm message about an Inverter in VST DVST GDVST error which inhibits compressor to start or run solve the problem which is the source of that fault Please read the control panel Operation manual for E compressors or electronic control aa BS anel system fault details Verify the starter inverter and controller wiring and connections P i according to the electrical wiring diagram of the compressor Call the nearest authorized ERAPOWER local service company The compressor have stopped due to a Check the failure lights on the control panel If your compressor is equipped with electronic panel please read to the electronic control panel Operation failure manual to understand the meaning of the fault signal G The earth and neutral line connection Connect the point with Mp signed on the electrical control starter board to is not existent or wrong neutral line and also connect the point with earth sign to the earth ground line The size section of the incoming cable Check if your cable size is enough depending to the cable sizes table If the f A cable size is not enough the incoming voltage can drop under the lower limit
26. d current is below than setpoint the relay is defective and must be changed Fan motor Panel filter the cooler Ensure the compressor room installation area ventilation is proper enough overload relay B honeycomb battery outer surfaces Change the dirty prugged filter elements Clean the cooler surfaces by using shut downs plugged or warm cooling air exhaust compressed air Do not let any obstructions or restrictions narrow sections compressor is obtructed Ventilation problem on cooling air suction inlet and exhaust duct channel If motor currents are higher than normal nameplate values it means overload on the fan motor When all enclosure access doors of the compressor are C Ean motor defective open run the compressor for a short time and listen fan motor noice sound to understand if it is abnormal or normal and inpect the body stator housing temperature if motor is being overheated due to overload or a bearing problem Call the service company if there is a motor fan failure For compressors with electromechanic control panel defective working A pressure switch or wrong setting Read 5 A For compressors with electronic control panel max working pressure setting is wrong Compressor shut Check the safety pressure switch setting it must switch when the adjusted downs due to high Safety pressure switch setpoint is safety high pressure is reached To understand if the switch contact is pressure fault N MM N
27. d in preparation for reinjection The separator tank receiver performs three basic functions 1 Acts as a primary oil separator by structural feature 2 Serves as the compressor oil sump 3 Houses the oil separator element Please look at Figure 5 7 at the end of Maintenance section 4 5 COMPRESSOR DISCHARGE SYSTEM FUNCTIONAL DESCRIPTION While compressed air oil mixture delivered by the Air End enters the separator tank receiver the velocity of the mixture is reduced and changed its direction Thus this allows oil to combine be collected at the bottom of the separator tank Then the air oil mixture with reduced oil rate is directed to the separator element with its special form holds the oil particles moving by velocity of air and separates oil from the air Meanwhile some of oil leaks into the separator element This amount of oil will be returned to the compressor unit Air End through a scavenge return line which leads from the bottom of the separator element by pressure differential between the separator tank and the compressor inlet The life of the separator element can be understood with periodical inspections by checking the pressure difference between the line pressure and internal pressure P2 and P1 When the compressor is on load and above 5 bar the differential must be less than 1 5 bar If the pressure difference is over 1 5 bar separator element must be changed If the safety pressure switch stops th
28. d must be rotating on counter clockwise when looking at its pulley or coupling side See Figure 2 2 Figure 2 2 DIRECTION OF ROTATION CHECKING ROTATION DIRECTION FOR COMPRESSORS EQUIPPED WITH ELECTRONIC CONTROL Energize the compressor If the control panel is energized and if there is no alarm Er 0020 on the screen that means you can run the compressor But if the panel is not energized or if you face Er 0020 fault that means the phases R S T are connected wrong Disconnect the power and change the position of 2 phases Then press START button and run the compressor only for a few seconds The air end must be rotating on counter clockwise when looking at its pulley or coupling side See Figure 2 2 3 1 TECHNICAL SPECIFICATIONS COMPRESSOR TYPE WORKING PRESSURE CAPACITY DRIVE TYPE START SYSTEM AIR END TYPE COOLING SYSTEM AMBIENT TEMPERATURE AVERAGE WORKING TEMP DELIVERY AIR TEMPERATURE MAIN MOTOR FAN MOTOR FAN DIAMETER FAN CAPACITY COOLING CAPACITY RECOMMENDED OIL EQUIVALENT OILS OIL CAPACITY OIL FILTER AIR INLET FILTER SEPARATOR ELEMENT SAFETY PRESSURE SWITCH WORKING PRESSURE SWITCH PRESSURE SENSOR TEMPERATURE SENSOR D INVERTER MOTOR SPEED MAX MIN BELT COUPLING 7 2 BELT TENSION FREQUENCY O7bar Q8bar Q 10 bar O 13 bar m min Belt Drive Direct Gear Drive OStar Delta Inverter Driven Air Cooled 0 45 C 82 96 C 8 12 C above ambient 380 400 V 50
29. defective and it must be replaced with new one Check the setting and functionality replace the defective part of the controller unit if it is required Call the authorized local service company for checking and repairing the controller unit If off load running time of the compressor is shorter than the setpoint of the run on time waiting duration for off load running before stop while the compressor starts to run on load again the control system disables and resets the run on time countdown ZR2 relay or timer and the compressor does not stop even if it runs in auto mode 17 14 Compresor runs with high temperature above normal level 15 When compressor changes running mode to off load air end delivery temperature rises A 16 17 Compressor running with abnormal noise above the normal level Compressor running with abnormal noise above the normal level while the working pressure approaches to the max value A B 18 Abnormal noise above the normal level while compressor runs off load 19 Off Load running pressure does not reduce to normal level high off load running pressure 20 Early oil deterioration SYMPTOM POSSIBLE CAUSE REMEDY A Low oil level quantity Check the oil level add oil into separator tank if oil level is low B High ambient temperature Check the ambient temperature Prevent high temperature in
30. ding pressure setpoint is changed wrong If your compressor has electronic control panel check the max unloading working pressure setpoint on the menu page of the controller unit display This circumstance appears when the inlet valve can not close valve head stays open as stuck While compressor is stopped and internal pressure is Inlet valve defective zero check the valve head is full closed and can move backward and toward easly Call the service company if the vave head can not close or stays open as stuck Solenoid valve defective Read 3 D D Air leaks on the control air Check the control air circuit fittings and connections tighen if any one is line circuit loose Change hose or tube if it is defective damaged 15 SYMPTOM POSSIBLE CAUSE The orifice or strainer on the scavenge REMEDY When the compressor is ruinning on load observe the oil return through transparent tube or sightglass If there is no oil flow retun in the scacenge line stop the compressor Clean the scavenge orifice by a thin wire and compressed air also clean the strainer if it is used then fit it to it s place Significant oil x aoil return line plugged after testing the orifice is open by blowing air If you cleaned the orifice consumption and strainer properly you see oil flow in the scavenge line transparent Oil leaks or oil is tube or sightglass at the initial 10
31. e compressor frequently pressure loss in the separator element must be checked The minimum pressure and non return check valve which is located downstream of the separator assures a min tank internal pressure of 4 to 4 5 bar while the compressed air passing through the separator element This minimum pressure is necessary for proper air oil separation and also for proper oil circulation The minimum pressure valve has also a check valve feature to prevent reverse compressed air flow from the service line to the separator tank on shut down and during operation of the compressor in an unloaded condition The minimum pressure valve prevents air flow to the compressor outlet when the internal pressure P1 is under 4 or 4 to 4 5 bar A pressure relief safety valve is set to open if the separator tank pressure exceeds the separator tank rating Also the control system will shut down the compressor if the discharge Air End delivery temperature reaches 115 C trip limit as high temp protection Do not remove caps plugs or other parts when compressor is running or pressurized Stop compressor and relieve all internal pressure before doing so Oil is added to the separator tank by it s oil filling hole with plug 4 6 AIR INLET SYSTEM FUNCTIONAL DESCRIPTION The compressor inlet system consists of a dry type air filter and an air inlet valve suction regulator as shown in Figure 4 1 The air inlet valve directly controls the amo
32. e old element 3 Clean gasket sealing surface 4 Apply a light film of oil to the new gasket Fill oil into the filter element 5 Tighten the new element by hand Avoid mistake which causes damage of filter cardridge 6 Restart compressor and check for leaks CAUTION To minimize the possibility of filter element rapture it is important that ONLY original replacement elements identified with the ERAPOWER name and appropriate part number be used and that substituted element not be used due to the fact that such filters may have inadequate or questionable working pressure ratings eh FILTER HEAD ED GASKET C LES ELEMENT Figure 5 1 OIL FILTER B AIR INTAKE FILTER REPLACEMENT refer to Figure 5 2 Air filter replacement time depends on environment conditions but as average or expected service time it should be performed every 6 months The air filter element replacement procedure is as below 1 Stop the compressor 2 Clean exterior of air filter housing 3 Release tension on cover clamp assembly 4 Remove element and clean interior of housing using a damp clotch DO NOT blow dirt out with compressed air Replace the element Reassemble in the reverse order of the disassembly nin Figure 5 2 AIR INLET FILTER NOTE Service life of the separator element will shorten and also may cause compressor damage if original spare part is not used C AIR INTAKE FILTER ELEMENT INSPECTION 1 Place a bright l
33. e switch is the high pressure setting screw Turn the screws softly during adjustment 2 If the compressor runs unloaded under required pressure turn screw counterclockwise slightly up to reach desired pressure NOTE IF YOUR COMPRESSOR IS EQUIPPED WITH ELECTRONIC CONTROL PANEL WORKING PRESSURE SENSOR IS USED INSTEAD OF THE SWITCH AND WORKING PRESSURE SETTINGS ARE DONE BY USING CONTROL PANEL Please read and perform electronic control panel controller unit adjustment instructions and explanations in the 2 nd fascicle of this user manual Operation for VST DVST GDVST series and other type ERAPOWER compressors with electronic control system FOR DIFFERENTIAL ADJUSTMENT Differential is the difference between the high and low pressure settings Here high means unloading or maximum working pressure setpoint while low means loading or minimum working pressure setpoint Differential is set to run compressor on load at desired pressure After the setting of the maximum working unloading pressure of the compressor by using Range adjustment screw the diffential pressure is set by using Differential adjustment screw If the compressor runs on load before desired pressure the differential adjustment screw is turned on clockwise slowly to widen the differential The screw is turned on counter clockwise to reduce the differential value Please adjust the pressure range and differential as described above a
34. e that the compressor is running properly DO NOT remove caps plugs or other components when compressor is running or pressurized Stop the compressor and relieve all internal pressure before doing so 5 3 PERIODIC MAINTENANCE AFTER INITIAL 50 HOURS OF OPERATION 1 TIGHTEN THE BELT AGAIN TILL ACHIEVING SPECIFIED BELT TENSIONING FREQUENCY The first belt tensioning procedure must be performed by the authorized service company personnel If belt tension is as required a new tensioning procesure is not necessary AFTER EVERY 50 HOURS OF OPERATION WEEKLY Perform the following maintenance operations to prevent unnecessary problems 1 CHECK OIL LEVEL 2 DRAIN CONDENSED WATER FROM THE BOTTOM OF THE SEPARATOR TANK 3 CLEAN THE OIL AIR COOLER S Honeycomb Section OUTSIDE SURFACES BY USING COMPRESSED AIR 4 CLEAN THE PANEL FILTER s 5 CLEAN THE AIR INLET FILTER 6 CHECK THE INTERNAL ARRANGEMENT OF THE COMPRESSOR for leaks AFTER EVERY 500 HOURS OF OPERATION 1 CHECK THE BELT TENSION Tighten the belt again if the belt tension is not as required AFTER EVERY 1000 HOURS OF OPERATION 1 CHECK CONTROL AIR LINE TUBING CHANGE IF IT IS REQUIRED 2 CHECK CONTACTS OF MOTOR CONTACTORS CHANGE IF IT IS REQUIRED 3 CHANGE THE PANEL FILTER s Clean if applicable 4 CLEAN THE COOLER S Honeycomb OUTSIDE SURFACES VIA NON FLAMMABLE LIQUID CLEANER 5 CHECK THE DIFFERENTIAL PRESSURE BEFORE AND AFTER THE S
35. e the scavenge arrangement strainer orifice and others and clean it them by compressed air or by a thin wire by taking care of not make any damage DO NOT widen the diameter of the scavenge orifice This may reduce the capacity of the compressor 0 0 Reduction Strainer W Reduction with orifice b Check Valve Tube Coupling Transparent Tube Figure 5 5 SCAVENGE ARRANGEMENT H MOISTURE SEPARATOR MAINTENANCE As optional usage a moisture separator is located downstream of the air cooler after cooler of the compressor just before the compressor olutlet delivery flange or pipe for removing the water which is condensed in oil air cooler This moisture separator Figure 5 6 drains the condensate which is collected in the vessel automatically by a timer solenoid valve or float device If the compressor is equipped with the moisture separator as optional on request by the customer the condensate drain start and on open time is adjusted in the factory Generally it is adjusted to be open for 3 seconds by 1 minute periods It can be set 1 to 5 minutes of start period and 3 to 6 seconds of on open time Note Condensate drain will stop close after on open time is expired and wait for start period before next opening The authorized service personnel or the user must set the condensate drain removal time by considering that principle
36. e value If the measured frequency value is higher than the reference value the belt tension is more than required if the measured frequency value is lower than the reference value it is less than required slack Warning If pulley diameters or belt length will be changed later then belt tensioning frequency reference value will changed The given reference value on Technical Specification page of the this manual in Section 3 is for original factory belt pulley configuration It is required to refer to an authorized local compressor service company for a new belt tensioning frequency value for a new pulley belt configuration also for preventing drain way blockage restriction by help of compressed air flow discharge for a short time Adjustment must be performed by keeping this balance G OIL RETURN SCAVENGE LINE MAINTENANCE During the oil air separation some amount of oil passes through the separator The oil is regained to the system by the return scavenge line When the compressor is running at full load oil flow should be visible in the transparent retun line tube Sluggish flow at full load indicates a need to clean the return line strainer or scavenge orifice When the little hole of the scavenge orifice is plugged by an undesired particules or any corrossion then the oil level in the separator tank falls down quickly During oil level is decreasing the reason may be the plugging in orifice In this case remov
37. ent type air compression as continuous and pulse free flow as needed pressure and quantity of air Any interferances to the internal parts of the Air End of ERAPOWER compressor are not permitted and will void the warranty 4 4 COMPRESSOR COOLING AND LUBRICATION SYSTEM FUNCTIONAL DESCRIPTION The cooling system consists of a fan fan motor an oil air cooler oil filter interconnecting piping and tubing and separator tank The pressure in the receiver separator tank causes oil flow by forcing the oil from the high pressure area of the sump to the oil cooler then to oil filter and from oil filter to low pressure area in the compressor unit Oil is purified from harmful dirt particles and deposits in the oil filter Then it is injected into the compressor unit in large quantities and mixes with the air as the rotors turn compressing the air The oil flow has three basic functions l As coolant it controls the rise of air temperature normally associated with the heat of compression 2 Seals the leakage paths between the rotors and the stator and also between the rotors themselves 3 Lubricates the bearings of the rotors The air oil mixture is discharged from the compressor unit enters the separator tank where the oil is separated from the air as coarse at first then fine separation is performed by the separator element After that the air flows through the aftercooler then to the service line while the oil is being coole
38. g bolt nuts of motor plate as required to get correct belt tension 6 Check pulley alignment by using apropriate template Check if front faces of pulleys are coincident in same plane it is OK 7 Tighten the counter nuts of the tensioning bolts to fix the motor position after ensuring or confirming the alignment is correct 8 Check all bolts and nuts are secured 9 Re energize the compressor and start it Check the belt pulley arrangement while running and readjust if it is necessary If the belt is vibrating the cause may be inadequate belt tension slack belt or mistaken pulley alignment Belt tension checking and adjusting if it is necessary is important to prevent early wear and break out of the belt The belt should be re tensioned after the first 50 running hours and the tension should be checked for every 500 hours USING OF BELT TENSIONING FREQUENCY MEASURING DEVICE By using Contitech VSM 1 or another device with same functionality 1 While the compressor is not running hit the top middle of the installed belt by hand or by a wrench without damaging the belt to vibrate it Or pull the belt from the middle to up hardly by finger 2 While the belt is vibrated by hitting locate the probe of the device at about 2 cm distance from middle top surface of the belt 3 The device will display the tensioning frequency as Hertz Hz unit That is Natural Frequency of Beltspan value and it must be equal to the referenc
39. ight inside the element to inspect for damage or leak holes 2 Inspect all gaskets and gasket contact surfaces of the housing Replace the gasket if there is a faulty 3 If the clean element is to be stored for using later it must be stored in a clean container 4 After the air filter element has been installed inspect and tighten all air inlet connections prior to resuming operation D SEPARATOR ELEMENT REPLACEMENT refer to Figure 5 3 The separator elements must be changed every year Follow the procedure explained below for separator element replacement 1 Stop the compressor Close the outlet shut off valve 2 Ensure all pressure in the receiver separator tank is relieved 3 Disconnect all piping connected to the separator tank s cover plate to allow removal 4 Loosen and remove the the cover plate bolts 5 Lift the cover plate from the separator tank Remove the separator element 6 Inspect the separator tank for rust or dirt Clean if necessary 7 Fit the new separator element into the separator tank by using new gaskets 8 Replace the separator cover gasket and place cover plate washers and bolts 9 Tighen bolts in across opposite order with required torque 10 Reconnect all piping making sure correct and tight 11 Clean the scavenge strainer and or orifice before restarting the compressor If scavenge filter exists on the scavenge line SEPARATOR ELEMENT SEPARATOR TANK
40. ing air of the compressor can not be carried moved out rejected properly enough The temperature may be increased and cooling capacity may be reduced if the cooler is being exposed to direct sunlight or the cooling air exhaust is obstructed by winds on adverse direction Check and take precautions for it D Oil level too low Check and add oil if necessary E Oil filter plugged Check and replace if necessary You can understand if oil has lost its service performance usage life easily is 4 by looking at the colour of the oil The oil color becomes more dark and oil Oil viscosity descreased and other oil viscosity decreases oil becomes more thin If oil change becomes necessary F features deteriorated Oil service life ired in a shorter time than specified recommened oil change time please check the running conditions of the compressor is worst as high ambient and running temperature gases in the area environment moisture rate etc G Air filter is dirty plugged Check the filter element clean and replace if it is required H Panel filtre is dirty plugged Check the filter element clean or replace if it is required Oura H oneycomb gar taces ot the Check and clean if it is required Call the service to understand if inside cooler is dirty plugged Fan blades is I cleaning of the cooler is necessary or not when outside cleaning can not solve the problem the cooler a
41. ion G Remove any acoustical material or other material that may be damaged by heat or that may support combustion and is in close proximity prior to attempting weld repairs H Keep suitable fully charged fire extinguisher or extinguishers nearby when servicing and operating the compressor L Keep oil rags trash leaves litter or other combustibles out of and away from the compressor Do not run the compressor without proper and adequate cooling air flow K Do not attempt to operate the compressor in any classification of hazardous environment unless the compressor has been specially designed and manufactured for that duty 1 5 MOVING PARTS A Keep hands arms or other parts of the body and also clothing away from pulleys and belts fans and other moving parts B Do not attempt to run the compressor while the fan belts or other guards removed Keep away yourself and other persons from moving parts while their guards are removed C Wear snug fitting clothing and confine long hair when working around this compressor especially when exposed to hot or moving parts D Keep access doors if any close except when making repairs and adjustments E Make sure all personal are out of and or clear of the compressor prior to attempting to start or operate it F Disconnect and lock out all power at source and verify at the compressor that all circuits are de energized to minimize the possibility of accidential start up or operation p
42. le Please read Location of Compressor subject in the installation section for details If the compressor installed next near to boiler room generator room or if the ventilation is not adequate in the compressor room high working temperature as result of high ambient room temperature shortens service operating life of the separator element Extend running time duration and frequency of the compressor or call the service company Read 2 B If WYE DELTA switching time for main motor is shorter than required the load will overs the motor power before the motor reaches to full speed at the start and contacts of the contactor s has been forced to more higher current than their capacity That may cause contact welding event or motor winding damage due to overload WYE DELTA switching time is 6 seconds don not adjust it to a shorter time duration Replace the worn contactor contacts The suggested start count per hour is 6 More frequent start stop affects mechanic life as bad also causes higher operating cost due to very high electric currents during start ups Consult to the service company if it is required Imitated Non original contacts will have very short operating life Please request original spare parts from the authorized local service company Call the service company Read 14 F and 17 Call the service company Call the service company 19 Table 1
43. nces immmediately if such spills occur inside or at the around of the compressor B Shut off the compressor and allow it to cool Then keep sparks flames or other sources of ignition away and do not permit smoking in the vicinity when checking or adding lubricant C Do not permit oils or oil film to accumulate on under or around acoustical material or on any external surfaces of the air compressor or on internal surfaces of the enclosure Wipe down using an aqueous industrial cleaner or steam clean as required If necessary remove acoustical material clean all surfaces and replace acoustical material Any acoustical material with a protective covering that has been torn or punctured should be replaced immediatelly to prevent accumulation of the liquids or oil film within the material Do not use flammable solvents for cleaning purposes D Disconnect and lock out all power at source prior to attempting any repairs or cleaning of the compressor or of the inside of the enclosure if any E Keep electrical wiring including all terminals and presssure connectors in a good condition Replace any wiring that has cracked cut abraded or otherwise degraded insulation or terminals that are worn discolored or corroded Keep all terminals and pressure connectors clean and tight F Keep grounded and or conductive objects such as tools away from exposed live electrical parts such as terminals to avoid arching which might serve as a source of ignit
44. nd as shown on Figure 5 4 Observe the delivery pressure P2 while adjusting The delivery pressure at the outlet of the compressor is reference of adjusting also equal to working pressure in term Finally check the compressor performs unloading and loading functions as correct expected and specified in normal conditions IDANGER DO NOT touch the electrical contacts terminal or leads with any metallic object Severe electrical shock may occur DO NOT let the pressure switch cover open RANGE ADJUSTMENT RANGE DIFFERENTIAL SCREW ADJUSTMENT ADJUSTMENT SCREW SCREW TERMINAL TERMINAL RESET BUTTON Figure 5 4 PRESSURE SWITCH F POLY V BELT REPLACEMENT AND TENSIONING Only for ERA and ERA VST series belt drive compressors 1 Stop the compressor and disconnect and lock all power at source Then unscrew remove the belt guard 2 Release the tension on the belt by loosening bolts nuts which are fixing the motor plate to the frame 3 Slowly turn the belt and remove it be carefull to not squeeze your fingers among belt and pulley 4 Put in place a new belt of the same type and size with the original Both the belt and the pulley have grooves equally Put these grooves in correspondance 5 Ensure the belt tension is correct The measured belt tension frequency must be same with which is specified on the Technical Specifications page of this manual 3 rd section Tighten or slacken tensionin
45. nning time duration and frequency of the compressor or call the time usually waits as stopped service company 18 SYMPTOM 21 Separator element is being plugged early 22 Early contact worn welding of contacts in contactor s 23 For belt driven compressors Early belt damage worn POSSIBLE CAUSE A There is not recommended type oil filled in the compressor Or separator element is not original High moisture content in ambient air Installation area Compressor room is not in appropriate clean environment Dusty or contaminated air by harmful gases fumes etc Continuous running with high air end delivery temperature Running Starting time duration and frequency of the compressor is very short seldom Low voltage problem WYE DELTA switching time is short Frequent start stop Contacts are not original contactor parts Pulley aligment mistake defect Belt tension is not as required normal Continuous running with high temperature and abrasive environment conditions REMEDY Please use original spare parts and the recommended oil Take precaution against high moisture ratio Decrease the moisture content of air in the operating area if it is possible When locating the compressor in sand blasting casting and chemical process workshops or factories select the area for the compressor room installation as clean as possib
46. ntrol panel the pressure setpoints of the working pressure and safety pressure switch are wrong Or one of these switches is defective not operative otherone is wrong adjusted For compressors with electronic control panel pressure settings are wrong Separator element is plugged blocked Air inlet valve defective Solenoid valve defective Safey Presure relief valve setting is wrong defective Main motor overload relay setting is below than the required normal Compresor is running as over loaded The temperature gauge combistat setting or max air end delivery temperature setting of the electronic control panel is low Compressor is being over heated For compressors with electromechanic control panel run on time relay ZR2 defective or time adjustment is wrong For compressor with electronic control panel the controller unit has a fault or wrong setting The compressor changes running mode from off load to on load before the run on waiting while idle time is expired REMEDY Check the temperature gauge combistat for electromechanic control panel is wrong adjusted or defective Check the temperature sensor for electronic control panel setting on the controller menu diplay page Check if there is enough ventilation improve the ventilation if it is required The cause may be a narrow smaller air inlet suction area than the compressor s inlet air flow section Or the warm air exhaust cool
47. oid or complete valve if it is required Check the control unloading solenoid valve with 3 way change if it is required Compressor can not reach to the maximum working pressure Working pressure switch or wiring is defective for compressors with electromechanic control panel Electronic control panel the controller unit or wiring is defective Air demand is too high overs the compressor capacity If the compressor is not running on load and the on load lamp is not ON there is a pressure switch or wiring problem Check wiring and pressure switch change if it is defective Check the normally open auxilary contact of K2 contactor if it is conducting the power or not By looking on the electrical wiring diagram check the relay out which energizes the control loading unloading solenoid valve SV1 is OK or not Close the shut off valve on the delivery line slowly to ensure the compressor reaches to maximum working pressure If you observe the delivery pressure is rising and the compressor is unloading at the max working pressure setpoint it means the compsumption demand is too high than the capacity Air leaks on the delivery or consumption line If you are sure that the compsumption is not more than the capacity check possible air leaks on the compressor air pipework delivery and comsumption line arragements C Air filter is dirty blocked change clean if it is dirty blocked Rest
48. olenoid valve adjustment or maintenance for moisture separator which is equipped with float type drain device If a condensate removal line is need from the compressor to the a drain channel or drainage the opposite end of the condensate removal line hose tube must be open to prevent back pressure to the moisture separator 5 8 4 SERVICE INSTRUCTIONS FOR THREE PHASE MOTORS 1 The electric motor has left our ex works as assembled on air compressor completed electric connection and dynamically balanced which is ready for operation For trouble free functioning care should be taken to ensure that the motors are not exposed any harmful effects during transportation and in the event of any such damage please inform 2 When the motor has not been used for a prolonged period of time inspect the bearings and renew the grease if necessary 3 When operating the motor at rated voltage and rated output the motor temperature rise at a maximum ambient temperature of 40 C must not exceed 80 C for class F insulation 4 Check data on the rating plate The voltage marked on the rating plate must be in agreement with the main voltages 5 In all of our compressors electric motors WYE DELTA starter except ERA VST series compressors 6 VDE 0580 and VDE 0100 norms require that all motors to be earthed properly 5 8 5 ANAEROBIC SEALANT LOCTITE USAGE NO COLOUR 243 BLUE For securing removable fastenings connections bol
49. onnections Every 4000 hours Air end seal leakage checking Every 8000 hours Bearing grease ACCORDING TO INTRUCTION ON MOTOR PLATE Refer Table 2 ADVISED SPARE STOCK Solenoid valve Temperature gauge Replacement times have been calculated Temperature sensor according to normal running conditions which Pressure sensor informed by technical specifications Working pressure switch Kit inlet valve First section shows the changing period of Kit contactor components Second section shows the checking period Kit minimum pressure valve Kit scavenge Belt for belt driven compressors only Coupling for direct coupled compressors only Compressor s Life Time Compressor life is declared 10 years according to Industrial Goods s Aftersales Service Legislation ERAPOWER undertakes providing spare parts of compressors for 10 years from the sales date 23 Parts should be ordered from the nearest ERAPOWER representative or the representative from whom the compressor was purchased If for any reason parts cannot be obtained in this manner contact the factory directly at the adress fax or phone numbers below When ordering parts always indicate THE SERIAL NUMBER of the compressor This can be obtained from the Bill of lading for the compressor or from the Serial number plate located on the compresso
50. or odor Replace the DC capacitors of the inverter Periodic maintenance of parts The inverter includes various parts and all of them must work properly in order to make full use of the inverter functions Among the electric components there are some that require maintenance depending on their usage conditions In order to keep the inverter operating normally over a period of time it is necessary to perform periodical inspections an replace parts according to their service life Periodic inspection standards vary depending the inverter s installation environment and usage conditions The inverter s maintenance periods are noted below Keep them as reference Part Replacement Interval Replacement Method Cooling fans 2 to 3 years Replace with new parts DC capacitors 5 years Replace with new parts Fuse charging resistor Check during maintenance Aluminium capacitor on PCB 5 years Replace with new board Decide during inspection NOTE Inverter maintenance is a subject of ERA VST ERA DVST and ERA GDVST series screw air compressors only Inverters Frequency converters are not used in other type ERA compressors 12 5 10 MAINTENANCE RECORD MODEL SERIAL NO 13 6 1 INTRODUCTION Doing so can prevent unneccessary damages always remember to 1 Check for loose wiring The information contained in the troubleshooting chart is based 2 Check for damage piping upon both
51. oves difficulty call the authorized local service company 55 kW and above models Verify the valve head is full closed if it is not the valve head is defective call the authorized local service company If the minimum pressure valve MPV does not close and leaks the compressed air on reverse direction compressor starts up difficultly against to load resistance because of the internal pressure To understand this start the compressor when the system outside air pressure is zero then observe the internal pressure increasing normally If there is not required pressure rising that means MPV does not keep internal pressure leaks air to out Stop the compressor wait for internal pressure is full released then remove the MPV Check the gasket and o rings replace renew which one needs to be replaced Motor or compressor unit Air End Stop the compressor and lock the power out check the belt or coupling is has a mechanical problem rotated easily by hand If you sense an abnormal high rotation resistance the E The Air inlet valve defective F Minimum pressure valve defective 14 cause may be an air end or motor bearing damage call the service company SYMPTOM POSSIBLE CAUSE REMEDY Compressor is not producing air does not run on load The compressor can not be switched from WYE stage to DELTA stage WYE DELTA motor starter failure If the compressor is equip
52. ped with standard electromechanic control panel WYE DELTA time relay ZR1 may be defective or wrong adjusted Check the time adjustment approx 6 seconds the light LED indicators If the 2nd light indicator is not lighting ON or the color of the light is not changing at the end of WYE stage the relay is defective and must be changed Inlet valve defective 11 45 kW Inlet valve head may be stuck in closed position 55 kW The control air from the solenoid valve can not move the actuator piston servo cyclinder diaphragm is damaged call the service company Minimum pressure valve defective Read 2F Solenoid valve defective plugged 11 45 kW Check power puppy to then soleoid valve when the power is switched to ON you can hear the noise sound of the solenoid then the cause may be mechanical problem damage of solenoid valve diaphragm If the power switching ON OFF opening closing noise sound is not heard the solenoid the coil is defective Change the solenoid coil or the complete solenoid valve if it is required 554 kW Check power supply to 2 solenoid valves If power is not supplied to solenoids check Ks relay if the contacts or the coil is damaged or not Change the relay if it is damaged Another possibbe cause is closing failure of the by pass solenoid valve with 2 way NO solenoid valve Check the soleoid valve for blockage due to dirt or damage of solenoid or damage of diaphragm Change the solen
53. r The genuine ERAPOWER service parts listed meet or exceed the demands of this compressor Use of replacement parts other than those approved by ERAPOWER may lead to hazardous conditions over which ERAPOWER has no control Such conditions include but are not limited to bodily injury and compressor failure PLEASE READ THE PART LIST BOOK FOR ILLUSTRATIONS AND SPARE PART LIST OF YOUR ERA COMPRESSOR ERA Compressors and Generators Itd Altaycesme mah Zuhal sok no16 MALTEPE ISTANBUL TURKIYE phone 00 90 216 4425866 fax 00 90 216 4424351 technic service 00 90 216 3148568 24
54. r 1 2 hours in week at least If the out of use time is longer than 6 months oil filter and separator element must be changed at the end of that 6 months period if the compressor was running with those component before Also thermostatic valve repair kit and minimum pressure valve repair kit must be changed if compressor is out of use never operated for 6 months If 1 2 hours running per week is not applicable a corrosion protection agent oil must be filled into the compressor unit air end and also into the sepaerator tank It must be drained when the compressor will be run Please consult to ERAPOWER for details about corrosion protection agent oil amp procedure if it is required NOTE Please conform to national and local laws and regulations for effluent oil amp condensate removal procedures 5 2 DAILY OPERATION Prior to starting the compressor it is necessary to check the oil level in the sump separator tank If the oil level is low simply add the necessary amount If the addition of the oil becomes too frequent it means a simple problem has developed which is causing this excessive loss Read the TROUBLESHOOTING section for a probable cause and remedy After a routine start has been made observe the control panel display and be sure it monitors correctly for this particular phase of operation After the compressor has warmed up a general check is recommended on the overall compressor and control panel in order to assur
55. re plugged Check the exhaust duct section and resistance pressure loss level The exhaust duct section area must not be less narrow than the cooler s air flow section area and it must not restrict the cooling air flow Improve the cooling air flow rate by performing menstioned precautions modifications Call the authorized local service company Read 5 A and 9 B Read 7 E Read 5 B Read 3 D If the safety valve opens under below it s pressure setting replace it with new one 55 kw and above The shut off valve may be left forgotten as closed Check the setting of the thermic overload relay Check measure the motor currents and sperator pressure loss difference at full load If main motor currents are higher than normal nominal limits check voltages Check mechanical problems on motor or air end as described explained on 2 G Change the separator element if pressure difference loss through the element is higher Check the max air end delivery temperature setting Check the air end delivery temperature while runing on full load also perform remedies checkings as described explained on symptom 10 Run on time relay ZR2 has a fault defect or wrong setting Check the setting about 4 minutes When the compressor running off load select the automatic mode by switch ing the continuous automatic selection button observe lights on te relays If the second light is off at the end of adjusted time then the relay is
56. rical cable ends open bare in person accessable areas without insulating or covering them adequately to prevent an electrical shock or short circuit 2 1 LOCATION OF COMPRESSOR The ERA Series compressor package may be placed on any level surface capable of supporting its weight and rigid enough to maintain a level compressor frame Level and compressor alignment is required Floor must be protected from humidity and oil leakage which may cause to burns and corrosions No piping loads shall be transmitted to the compressor at the external connections Proper room and location is shown in Figure 2 1 For outside location please consult ERAPOWER or an authorized ERAPOWER service company which one is nearest to you A Compressor A E B Air Receiver 2 Air Piping C Dryer 3 Shut Off Valve D Filter 1 Flexible Hose 4 Drain Line E Shut Off Valve Figure 2 1 INSTALLATION 2 2 VENTILATION AND COOLING Select a location to permit sufficient unobstructed air flow in and out of the compressor to keep the operating temperature stable The minimum distances from the compressor must be proper to maintenance and cooling requirements Compressor must be installed according to dimensional drawings and also additional Screw Compressors Installation Principles document In order to prevent excessive ambient temperature rising it is imperative to provide adequate ventilation Do not install the compre
57. riction through inlet air filter causes increased running temperature also capacity loss Stop running of the compressor inspect air filter element and This circumstance appears when the inlet valve can not open enough valve head is stuck While compressor is stopped and internal pressure Compressor does not unload at maximum working pressure overs the max working pressure setpoint please read also symptom 9 D Inlet valve defective is zero check the valve head is full closed and can move backward and toward easly Call the service company if the valve head has a curtail or an oppress problem Also an abnormal different noise will be heard while running of the Mechanic failure in the air end compressor with a mechanic failure If the condensed water in the separator compressor unit tank had not drained periodically the water might be mixed to oil and circulated in air end and caused air end damage Call the service compnay ENS I Check the range adjustment of working pressure switch when the pressure Working pressure switch is defective reaches to max working pressure setpoint the contact of the pressure switch for COLUPIESSOLS with must be switched change to open cut If the device is not switching it is A electromechanic control panel defective and must be changed You can get the switching function more easily by adjusting range screw to minimum pressure Maximum working Unloa
58. rior to attempting repairs or adjustments This is especially important when compressor are remotely controlled and remote control must be shown by signs and decals that are visible from each point of compressor G Keep hands feet floors controls and walking surfaces clean and free of oil water or other liquids to minimize the possibility of slips and falls H Provide an adequate illumination where the compressor is installed 1 6 HOT SURFACES SHARP EDGES AND SHARP CORNERS A Avoid body contact with hot oil hot surfaces and sharp edges and corners B Keep all parts of the body away from all points of air discharge C Wear personal protective equipment including gloves and head covering when working in on or around the compressor D Keep a first aid kit handy Seek medical assistance promptly in case of injury Do not ignore small cuts and burns as they may lead to infection 1 7 TOXIC AND IRRITATING SUBSTANCES A Do not use air from this compressor for respiration breathing Death or serious injury can result from inhaling compressed air without using proper safety equipment B Do not use compressed air in air lines supplying respirators or other breathing air utilization equipment and do not discharge air from these systems in unventilated or other confined areas Operate the compressor only adequately ventilated areas Locate the compressor or provide a remote inlet so that it is not likely to ingest exh
59. ssor where it will be exposed to temperature less than 0 C or heat the compressor room as required The cooler of the compressor must not be exposed to direct sun light also the cooling air exhaust of the compressor must not be affected by winds on reverse direction Pay attention to this subject in addition to other important factors for compressor room selection and location 2 3 SERVICE AIR PIPING Service air piping should be installed as shown in Figure 2 1 A shut off valve E should be installed to isolate the compressor from the service line 2 4 OIL LEVEL CHECK A transpent oil level tube arrangement exists at the next of the oil filler plug on the separator tank vessel for checking oil level Oil level must be in between max and min level signs lines on the oil level label sticker at the behind of the transparent oil level tube In order to check oil level correctly please run the compressor till the oil temperature rises to 90 C then stop it and after waiting for 15 minutes observe the oil level in the transparent tube and level sign label behind it If the running temperature is under 90 C you can obstruct cooling air flow partially to get temperature rising up to 90 C quickly It can be misleader if the running temperature of the compressor is under 90 C while checking oil level If the oil level must be in max and min limits If oil level is low add oil up to the correct level Do not fill oil above max oil le
60. stat extreme temperature switch temperature switch fuses DO NOT begin any meintenance or adjustment work before the compressor has been switched off and P2 are 0 and make sure to secure the compressor against accidental restart DO NOT use any flammable or explosive material for cleaning purposes DO NOT allow to be any flammable gases which may cause explosion or burning in the inlet air Keep the working area clean and tidy Only qualified electricians are allowed to do any work on the electric system Only use original ERAPOWER spare parts for your compressor We assume you to keep needed spares in your stock DO NOT allow any unauthorized companies or non ERAPOWER companies for part changes It is valid most restricted one of the rules about the security if any instruction in this manual is not comply with the local rules Take additional cares if necessary and take care of each handling operating maintanance and repairs even though it is not explained in this manual Compressors must be grounded DO NOT attempt to operate the compressor out of stated operating pressures operating pressure is indicated on the serial number plate READ THE MANUAL Each authorized machine operator must have fully read the manual before working with the compressor The person responsible for plant safety should request all operators to confirm this by their signature I HAVE READ AND UNDERSTOOD THIS OPERATOR S MANUAL Signature Date
61. t nut fixing 270 GREEN For securing non removable fixed connections of fasterners and or fittings 542 RED For sealing of fitting connections up to 3 4 577 YELLOW For sealing of fitting connections 3 4 and above 10 L PIPING and INSTRUMENTATION DIAGRAM TYPICAL SOLENOID H VALVE PRESSURE SWITHCH SYSTEM INTERNAL PRESSURE GAUGE ig 5 MINIMUM PRESSURE CHECK VALVE AIR FILTER STRAINER PRESSURE SIGHT SAFETY GLASS HU 2 AIR INLET VALVE EL L l ORIFICE 7 LIC T In nif MOTOR Lau LE FISCI i l THERMOSTATIC el ly Coupling IL VALVE LI Direct Drive Compr essor SEPARATOR TANK BELT DRIVE M COMPRESSOR AIR END DELIVERY TEMPERATURE GAUGE PRESSURE SWITHCH e 2 LINE PRESSURE M MMO GAUGE SRITI J AIR COOLED AIR AND OIL COOLER 11 Figure 5 7 PIPING and INSTRUMENTATION DIAGRAM 5 9 INVERTER MAINTENANCE AND INSPECTION FOR ALL VST COMPRESSORS Maintenance period Within 18 months of shipping from the factory or within 12 months of being delivered to the final user whichever comes first Daily inspection Check the following items with the system in operation The motor should not be vibrating or making unusual noises There should be no abnormal heat generation The ambien
62. t off valve will ensure quick pressure isolation between compressor and compressed air system pipework during any maintenance and repair works B Select Use appropriate devices air hoses pipe and filters for more effective running service of the compressor Ensure all equipment is proper for working pressure and capacity C Check all compressed air connections are tighten secured and there is not any leakage loose or poor connections will cause an accident D Before removing any fittings hoses and valves etc release all of internal air pressure of the compressor Stop the compressor then ensure air pressure in the separator tank is released and the internal pressure gauge or the display shows 0 zero for internal air pressure Open the oil filter cap of the separator tank only when compressor is not running and there is no air pressure in the separator tank To order to prevent any burnings and injuries wait for reducing of the oil foams in the separator tank after compressor is shut down E Keep other persons and aminals away from the compressed air discharge points Do not direct compressed air on to a person or animal Do not inhale breathe industrial compressed air F Do not joke by using compressed air hoses which can cause injuries G Do not change factory pressure setting of safety pressure switch and or pressure safety relief valve 1 4 FIRE AND EXPLOSION A Clean up spills of lubricant or other combustible substa
63. t temperature should not be too high The output current value shown on the monitor display should not be higher than normal The cooling fans on the inverter should be operating normally AWN Periodic inspection Check the following items during periodic maintenance 1 Always turn OFF the power supply before beginning the inspection 2 Confirm that the LED indicators on the front cover have all turned OFF and then wait the time mentioned on the yellow label has elapsed before beginning the inspection Be sure not to touch terminals right after the power has been turned off Doing so can result in electric shock Parts Checks Remedies External terminals Are all screws and bolts tight Tigthen loose screws and bolts firmly mounting bolts screws Are connectors tight Reconnect the loose connectors connectors Cooling fins Are the cooling fins dirty or dusty Clean off any dirt or dust with an air gun using dry air max 6 bar PCB s Is there any conductive dirt or oil mist on the the PCB s Clean off any dirt or dust with an air gun using dry air max 6 bar Cooling fans Is there any abnormal noise or vibration Or has the total Replace the cooling fans operating time exceeded 20000 hours Power elements Is there any conductive dirt or oil mist on the the PCB s Clean off any dirt or dust with an air gun using dry air max 6 bar DC Capacitors Are there any irregularities such as discoloration
64. the intallation area if it is possible C Inadequate ventilation Read 10 C D Plugged Dirty cooling air system Clean the plugged dirty sections surfaces if it is required E Plugged Dirty air filter Clean and replace if it is required For belt driven compressors Inadequate belt tension Slack belt which causes slipping Mechanic problem in the air end compressor unit Thermostatic valve failure Plugged Restricted section part in oil circulation system pipes hoses fitttings orifices etc or plugged oil filter usage service life of the oil olf and separator element Some components are not fixed securely slcak or mistakenly fixed For belt driven compressors Belt tension and or aligment is not correct maintenance section Usually the motor plate amp pulley position is adjusted C Motor bearings problem Check motor bearings and replace if it is required D Mechanical problem in the air end Read 2 G A For belt driven compressors For belt driven compressors Slack or worn belt Read 14 F Also inspect belt ribs replace the belt if ribs are worn B Beginning of motor bearings problem Check motor bearings and replace if it is required Mechanical problem in the air end Air inlet valve defective Oil filter or oil circulation system is B plugged or restricted Read symptom 15 A Minimum pressure valve defective Compressed air leaks backward from delivery line to the
65. to do so then disconnect lock out and tag all power at source so others will not inadvertendly restore power Disconnect lock out and tag all power at source prior to attempting repairs or adjustments to rotating machinery and prior to handling any ungrounded conductors Dry test all shut down circuits prior to starting the compressor after installation 1 9 LIFTING AND HANDLING A m If the compressor is provided with a lifting bail then lift by the bail provided If no bail is provided then lift by sling as shown in figure 1 1 In any event lift and or handle only full compliance with Federal State and Local codes Inspect points of attachment for cracked welds and for cracked bent corroded or otherwise degraded members and for loose bolts or nuts prior to lifting Make sure entire lifting rigging and supporting structure has been inspected is in good condition and has a rated capacity of at least the weight of the compressor If you are unsure of the weight then weight compressor before lifting Carefully lift the compressor against a risk of any accident or damage on it Keep all personal out from under and away from the compressor whenever it is suspended Lift compressor no higher than necessary Keep lift operator in constant attendence whenever compressor is suspended Set compressor down only on a level surface capable of safely supporting at least its weight and its loading unit
66. unt of air intake to the compressor in response to the operation of the control solenoid valve by the controller The inlet valve also acts as a check valve thus preventing reverse rotation when the compressor is shut down HOSE zN i INLET VALVE 5 COMPRESSOR INIT Figure 4 1 AIR INLET SYSTEM 4 7 CONTROL SYTEM FUNCTIONAL DESCRIPTION Functional description of the control system is explained on related pages of the Operation instructions fascicle with details Please read Operation instructions in the 2 nd fascicle of this user manual 5 1 GENERAL Before doing compressor maintenance disconnect compressor from power source and lock out power source Isolate compressor from line pressure by closing the shut off valve and be sure internal pressure has blown down to zero As you proceed in reading this section it will be easy to see that the Maintenance program for the air compressor is quite minimal Periodical checks and the sevice indicators will alert you when service maintenance is required Read carefully before the maintenance and take care that the maintenance should be performed by the authorized person This will increase the lifetime of your compressor MAINTENANCE BY THE UNAUTHORIZED NON TRAINED PERSONS AND OR WORKSHOPS WITHOUT PROPER ENVIRONMENT WILL VOID THE WARRANTY AND MAY CAUSE INJURIES AND ACCIDENTS If the compressor will not be run for a long time it must be run fo
67. vel sign line Please read Maintenance section for details 2 5 ELECTRICAL PREPARA TION Electrical wires must be selected and connected according to rated current values of the compressor as mentioned by the standards Connections must be performed by the qualified electric technicians INOTE Check electrical connections are correct proper tighten and secured before initial running of the compressor Lethal shock hazard inside Disconnect all power at source before opening and servicing 2 6 MOTOR ROTATION DIRECTION CHECK Motor rotation check must be made at compressor start up As needed open the access door to view motor rotation Because of all ERAPOWER rotary screw air compressors contain a phase sequence relay it is not possible to run the compressor in wrong motor amp air end rotation direction CHECKING ROTATION DIRECTION FOR COMPRESSORS EQUIPPED WITH ELECTROMECHANIC CONTROL Press READY button and see the light is on After you release this button if the light remains on you can run the compressor If the light is off that means the phases R S T are connected wrong Disconnect the power and change the position of any two phases To check it again please look at the motor protection relay in the electrical cabinet If the light of this relay is on that means the compressor is ready to start Then switch the Start Stop button to Start position and run the compressor only for a few seconds The air en

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