fs curtis ml series air compressors user manual
Contents
1. O ep D N X N i x r ru 4 uw DE N Fig 9 Recommended Installation Method 1 Mounting bolt see Table 3 for recommended sizes 2 Flat washer sized for bolt 3 Compressor Base 4 Vibration Isolator Pads 5 Steel Shim as necessary for leveling Concrete floor see local codes for recommended concrete thickness and hole drilling depth 7 Heavy duty double expansion machine bolt anchor shield 8 1 diameter hole Table 4 Anchor Bolt specifications MASTERLINE SERIES CAP200 Page 14 of 42 REV C NOV 2012 Step 5 Tighten the fasteners Incrementally tighten the mounting bolts evenly in a cross pattern If necessary after start up continue incrementally tightening the mounting bolts in a crossing pattern until vibrations have been reduced to an acceptable level After vibrations have been minimized loosen ONE mounting bolt The unit expands and contracts with changes in temperature leaving ONE bolt loosened will allow for thermal expansion of the unit reducing thermal stresses and vibrations on the tank If after loosening one bolt the vibrations get worse retighten bolt and select a different unit Excessive vibrations can damage equipment Step 6 Install piping network Run a clean pipe to the tank disch2. TIME DELAY RELAY L TI M AAA OIL PRESSURE 120V HEATER FOR TIME aS CUR 1905 KIENLEN AV MATERIAL FINISH HEAT TREAT MASTERLINE SERIES CAP200 Page 21 of 42 REV C NOV 2012 Wiring Diagrams ASSD and Solenoid Valve C89 D97 C98 C100 C100S C150H TURN OFF TAGOUT POWER BEFORE SERVICING FILENAME CAA1465 DWG CURT 905 KIENLEN H oe I ates D Hp as H R VE ALL BURRS DO NOT SCALE DRAWING MASTERLINE SERIES Page 22 of 42 CAP200 REV C NOV 2012 Wiring Diagrams Dual Control 089 D97 C98 C100 61005 C150H FILENAME CAA14654 DWC TURN OFF TAGOUT POWER BEFORE SERVICING FUSED DISCONNECT ASSEMBLY MODEL G SCHEMA 1 TE RE SWITCH AND NEXT ASSEMBLY IRTIS TOLE 305 KIENLEN AVE VU QUIS MO 63133 JUAL CONTROL OOS 50H SOLENOID VALVE MASTERLINE SERIES CAP200 Page 23 of 42 REV C NOV 2012 Start Up Pre Start Check List WARNING Do not proceed until the PRE STARTING CHECKLIST and sub section has been read and is thoroughly understood 1 Check oil level in crankcase for proper level 2 Drain liquid from the air receiver and moisture trap if
3. sese 19 Large Industrial with Pilot 20 ASSD Control D97 C89 C98 C100 C100S 15 21 Dual Control 097 C89 C98 C100 61005 1 22 Start Up Section 4 Pre Start Check 23 Start Up D 24 Maintenance Section 5 Shut Down PO CUI 2 T 24 Maintenance Schedule an 25 On ea 26 B 20 Oi and een 27 sew sr ee ee ee 28 29 Belt Tensi Mc 30 31 Unloaderinspeellon Auen 32 34 35 Maintenance Parts Qut ee 35 Troubleshooting Section 6 uespkti me t 36 37 Maintenance Check off Lists eese rernm nennen nere nnn nis 38 41 MASTERLINE SERIES CAP200 Page 3 of 42 REV C NOV 2012 READ ME FIRST Safety Precautions The owner lessor or operator of any compressor unit manufactured by FS Curtis Inc is hereby warned that failure to observe all safety precautions may result in serious injury of personnel and or damage to property FS Curtis Inc neither states as fact nor in any way implies that this list of safety precautions is an all inclusive list the observance of which will
4. 2 Air Compressor 5 Pressure Switch model s general arrangement for a precise configuration of system 2n components 3 Intercooler 6 Vibration Isolator Pads Fig 2 Duplex unit system diagram Refer to the simplex diagram for a description of the compression cycle Duplex units operate in much the same way as simplex units only there are two compressors The key difference is in the pressure switch and starter In a duplex unit there are two pressure switches a lead pressure switch and a lag pressure switch set 10 psi lower than the lead switch The alternator utilizes both compressors to fill the tank Once the tank approaches the cutoff lag pressure the alternator selects one compressor to be the lag compressor and cycles it off using only the lead compressor to provide the remaining pressure The alternator then cycles between both compressors switching the lead and lag compressor and ensuring roughly equal wear between them If air usage exceeds the output of a single compressor the alternator utilizes both the lead and the lag compressor to fulfill operating conditions once again cycling off the lag compressor when its cutoff pressure is reached MASTERLINE SERIES CAP200 Page 7 of 42 REV C NOV 2012 Large Industrial 1 Air Intake 4 Electric Motor Exact orientation of your system s components may vary Factory Note Single stage compress
5. FREIGHT DAMAGE The transportation industry has adopted a modification with regard to the handling of obvious and concealed damage claims Therefore it is extremely important that you examine every carton and crate as soon as you receive it If there is any obvious damage to the shipping container have the delivering carrier sign the freights bill noting the apparent damage and request a damage report If concealed damage is discovered at a later date the carrier must be notified within 15 days of initial receipt of freight Contact the carrier as soon as possible giving them an opportunity to inspect the shipment at the premises where the original delivery was made Retain all containers and packing for inspection by the carrier Do not move the freight Concealed shipping damage is not covered by the FS Curtis warranty A claim form can be requested from the carrier Your claim will need to be substantiated with the following documents Original bill of lading Original paid freight bill Original invoice or certified copy Other particulars obtainable in proof of loss or damage photos damage inspection report etc We suggest these instructions be circulated to your shipping and receiving personnel MASTERLINE SERIES CAP200 Page 10 of 42 REV C NOV 2012 Installation Procedure Step 1 Select a proper location for installation Select a clean dry well lit area with a rigid floor strong enough to support the compres
6. HHCS 5 8 11UNC x1 3 4 68 Connecting Rod HHCS 3 8 24UNFx23 4 15 HHCS3 8 24UNFx23 4 15 HHCS 1 2 13UNC x 4 1 2 HHCS 1 2 13UNC x 4 1 2 Intercooler HHOS 1 2 13UNC x33 4 HHCS 1 2 13UNCx33 4 50 HHCS 3 8 16UNC x 1 1 4 HHCS 3 8 16UNC x 1 1 4 Side Door Machine Screw 5 16 x3 8 13 Machine Screw 5 16x 3 8 19 HHCS 3 8 16UNC 1 1 4 HHCS 3 8 16UNC 1 1 4 End Plate 1 4 20 x 1 2 screw 37 1 4 20 x 1 2 screw nr 1 2 13UNC X1 5 50 1 2 13UNC 50 Valve Cover Nut Stud 15 3 8 16UNC 20 Valve Hold down s 46UNC x 4 3 4 17 3 8 16UNC x 1 3 4 17 Set Screw Unloader APU 7 8 14 so 7 8 14 50 HP LP SV Plug Valve Assembly 80 Valve Assembly 80 MASTERLINE SERIES CAP200 Page 29 of 42 REV C NOV 2012 Bolt Torques Large Industrial Compressors Consult exploded Size Torque Size Torque Size Torque 0 50 ft lb assembly for part Head to cylinder 3 4 10 160 3 4 10 160 5 8 11 140 Cylinder to Case 3 4 10 140 3 4 10 140 3 4 10 140 Discharge Flange 5 8 11 80 5 8 11 80 5 8 11 80 Connecting Rod 5 8 18 110 5 8 18 110 1 2 20 65 Intercooler 1 2 13 37 1 2 13 37 1 2 13 37 Side Door 5 16 18 7 5 16 18 7 5 16 18 7 End Plate 1 2 13 50 1 2 13 50 1 2 13 50 1 2 30 50 1 2 30 50 1 2 30 50 Valve Cover 3 8 16 20 3 8 16 20 3 8 16 20 Valve Hold down MEET Er 17 3 8 16 17 3 8 16 17 Set Screw Torque Torque De 919 Size ft lb Head to cylinder 5 8 11 140 5
7. Please keep a record of changes and have this list available when calling technical service Air Filter Initials Date Replaced Initials Date Replaced Intercooler Aftercooler Cleaning Initials Date Checked Initials Date Checked REV C NOV 2012 MASTERLINE SERIES CAP200 Page 41 of 42 REV C NOV 2012 NOTES MASTERLINE SERIES CAP200 Page 42 of 42 REV C NOV 2012 NOTES FS Curtis 1905 Kienlen Ave St Louis MO 63133 800 925 5431 FAX 314 381 1439 EMAIL info curtistoledo com Website www fscurtis com
8. To check to see if unloader is stuck open or closed the action can be viewed on the low pressure cylinders by removing air inlet filter and eloow and watching the operation through the inlet opening If the piston unloader becomes sticky or jerky in operation remove the unloader cylinder and piston assembly Remove all dirt or carbon and lubricate the piston and cylinder with a high temperature bearing grease before re assembly and installation CONSTANT SPEED CONTROL with PILOT VALVE All compressors The pilot valve supplied with some compressor units is a spring loaded ball and seat type When air receiver pressure reaches the pre set adjustable cut out pressure the ball is unseated permitting air pressure to actuate the unloaders When the air receiver pressure drops to the cut in pressure the ball reseats and relieves the pressure acting on the unloaders permitting the compressor to pump again These valves have a manual override device consisting of a screw or cam located at the exposed end of the stem which forces the stem outward This permits manual unloading and reloading of the compressor unit Should these valves become faulty in operation they may require disassembly and cleaning especially the filter After reassembly the pressure settings cut out and cut in must be readjusted MASTERLINE SERIES CAP200 Page 34 of 42 REV C NOV 2012 INSTRUCTIONS UNLOADER PILOT VALVE FUNCTION MANUAL OVERRIDE j VV1002 Pilot
9. 5 8 Table 1 Bolt hole mounting patterns for various tank sizes MASTERLINE SERIES Page 11 of 42 HWM NIT E a Fig 6 Large Industrial Base Mount CAP200 REV C NOV 2012 Fig 7 Masterline Base Mount MODEL DIMENSION INCHES MODEL DIMENSION INCHES A B D96 25 75 n a 17 375 C200 64 75 32 375 20 C79 25 75 n a 17 375 02008 64 75 32 375 20 D97 25 75 n a 17 375 C260H 64 75 32 375 20 C89 25 75 n a 17 375 C260 64 75 32 375 20 C98 25 75 n a 17 375 caoo 76 38 27 75 C100 64 75 32375 20 C300S 76 38 27 75 C100S 6475 32 375 20 C300H 76 38 27 75 C150H 64 75 32 375 20 Table 2 Foundation Dimensions Acceptable Mounting Unacceptable Mounting Concrete Anchor Bolts Threaded Rod or Floor Stud e Steel flooring or supports provided unit Skid Mounted Unanchored Bare Floor no vibration pads is bolted down and isolator pads are used Table 3 Compressor mounting methods If you wish to utilize an installation method other than the approved methods described in Table 2 please contact your local distributor FS Curtis neither states as fact nor implies that the above list of Acceptable Unacceptable mounting is all inclusive Contact your local distributor for more information MASTERLINE SERIES CAP200 Page 12 of 42 REV C NOV 2012 Ste
10. Problem Cause CAP200 REV C NOV 2012 Remedy Low discharge pressure Manual drain not fully closed standard model e Automatic drain not fully closed if applicable Clogged air filter intake Leaks in air distribution system Clogged air distribution system Worn out pressure switch Belt slipping e Worn piston rings Worn head gasket e Worn valves e Close the drain cock Clean or replace automatic drain Replace the filter Check fittings bushings and connections for leaks Clean air distribution system Replace pressure switch See 6 Replace with ring kit Replace with gasket kit Replace with valve kit Excessive belt wear Belt too tight or too loose Incorrect belt Exposure to abrasive dust Working pressure too high Worn or misaligned pulley Adjust belt tension Use correct belt Eliminate dust or relocate unit Lower working pressure Replace or realign pulley Lubricant appears milky e Water in the crankcase Incorrect oil e Water contaminated oil e Water leaking back through discharge intake valve Compressor not running long enough to prevent condensation e Use correct oil e Replace oil e Re pipe with drip legs and pitch piping away from the compressor 10 Excessive oil in compressed air Oil level too high e Incorrect oil e Piston ring not fully seated e Worn piston
11. Therefore large changes in pressure adjustment must not be mad without adjusting the differential A minimum differential of 10 PSI should be maintained to prevent system from loading and unloading too frequently DIFFERENTIAL ADJUSTMENT To increase the differential unlock locknut D then turn cap nut C very slightly clockwise not more than 1 4 of a turn at time To decrease the differential repeat above but instead turn cap nut C counterclockwise It may be necessary at this point to fine adjust the unload pressure as outlined in the Pressure Adjustment by turning the adjusting nut A in the proper direction MAINTENANCE If the pilot valve becomes erratic or fails to operate after being in use for some time it should be disassembled cleaned and reassembled If the locknut B is loosened a minimum amount before removing adjusting nut A it will assist in adjusting the pressure setting on reassembly CAP200 REV C NOV 2012 MASTERLINE SERIES Page 35 of 42 MAIN BEARING The main bearings are of the tapered roller type and must be shimmed or adjusted for end play as follows 0 0005 to 002 for compressors D96 C79 C89 and D97 0 0005 to 003 for compressors C98 and C100 e 0 002 to 004 for compressors C150 C200 and C260 0 004 to 006 for compressors C300 Maintenance Parts and Rebuild Kits To order replacement parts for routine maintenance please contact your local distributor MASTE
12. Valve senses receiver tank pressure BE A N dr when the receiver pressure rises to the preset unload s AN B valve setting the ball opens passing high pressure air At AD c to the compressor unloading device When the Cd E 3 i d t th t d Erd PH receiver pressure drops to the preset load valve e 2 setting the ball closes venting the compressor adn unloading device to atmosphere A manual override oum Permits manual unloading of the compressor when Y placed in the up position OAV E pT N AN STAINLESS STEEL BALL Yue 2 INSTALLATION Receiver tank pressure is connected to the 1 4 pipe thread inlet The compressor unloading device is connected to the 1 8 pipe outlet FILTER m INLET VV1002 UNLOADER PILOT VALVE Fig 17 Pilot Valve ADJUSTMENT PRESSURE ADJUSTMENT The pilot valve is preset at assembly to a specified cutout and differential A limited adjustment of the unload pressure may be made in the field To adjust the unload pressure unlock the locking nut B and turn the adjusting nut A clockwise for higher pressures and counterclockwise for lower pressures CAUTION As unload pressure is increased the pressure differential between load and unload pressure will become larger As unload pressure is decreased the pressure differential will become smaller A 30 PSI change in unload pressure will change the differential approximately 10 PSI
13. bs 95 96 Pressure Switch OL u m n L2 B M sto gt I 90 otor 3 D I IC E Fs Power Supply to L1 L2 and L3 y i M A A2 95 96 Pressure Switch Fig 11 Single Phase wiring diagram Fig 12 Three phase wiring diagram NOTE The above wiring diagrams are valid for standard models only Contact your local distributor for wiring diagrams for factory installed options MASTERLINE SERIES CAP200 Page 18 of 42 REV C NOV 2012 Wiring Diagrams Duplex Dual Source Alternator TURN OFF TAGOUT POWER BEFORE SERVICING L1 Be Menee Fig 13 Duplex dual source alternator panel NOTE Unit wiring diagram is located on the inside front cover of the alternator panel If over time the diagram becomes illegible please contact your local distributor MASTERLINE SERIES CAP200 Page 19 of 42 REV C NOV 2012 Wiring Diagrams Large Industrial with Solenoid Valve C200 C200S C260 C260H C300 C300S TURN OFF TAGOUT POWER BEFORE SERVICING OIL PRESSURE TIME DELAY RELAY TD1 4 LOTO M FILENAME CA2044Q DWG TOLEDO ne ST LOUIS MO 63133 MASTERLINE SERIES CAP200 Page 20 of 42 REV C NOV 2012 Wiring Diagrams Large Industrial with Pilot Valve C200 C200S C260 C260H C300 C300S TURN OFF TAGOUT POWER BEFORE SERVICING
14. prevent all damage to property or injury to personnel Every reasonable effort has been taken to ensure that complete and correct instructions have been included in this manual However possible updates and changes may have occurred since this printing FS Curtis Inc reserves the right to change specifications without incurring any obligation for equipment previously or subsequently sold Compressors and or units are assembled to comply with the customer s purchase order and in compliance with FS Curtis Inc specifications alteration must not be made to the compressor or unit without FS Curtis written approval DANGER Air used for breathing or food processing must meet O S H A 29 C F R 1910 134 or F D A 21 C F R 178 350 regulations Failure to do so will cause severe injury or death WARNING Compressors are precision high speed mechanical equipment requiring caution in operation to minimize hazard to property and personnel Listed below are some safety precautions that must be observed e Use of FS Curtis Compressors to transfer toxic radioactive flammable or explosive substances is prohibited Do not install the compressor in an area where there is a risk of exposure to explosive gases or combustible dusts such as flours starches coke coal dust etc or in close proximity to corrosive substances e Release all air pressure from the system before working on the unit and red tag all electrical control switches
15. rust wear and carbon build up e Check air filter for cleanliness and replace if necessary e Replace Oil filter and clean oil strainer EVERY SIX MONTHS e Replace air filter MASTERLINE SERIES CAP200 Page 26 of 42 REV C NOV 2012 Oil OIL RECOMMENDATION All FS Curtis MasterLine compressors require a 500 hour break in period with RC 1000 oil and are factory filled with the needed lubricant for the break in period After the break in period is complete drain the oil and replace with required oil for your compressor listed below FS Curtis manufactures two different lubrication systems for Masterline compressors The compressors D96 D97 C79 C89 C98 and C100 use an oiling ring system Use ISO68 RC 1000 Premium Reciprocating Compressor Lubricant This oil is specially formulated for Curtis Reciprocating Air Compressors and includes non Detergent type with anti foam anti rust and oxidation inhibitors Use IS0100 RC 1000A for break in and regular use if ambient air temperatures exceed 90F Large industrial units C200 C260 and C300 use an oil pump system and operate under very high pressures and temperatures For Large Industrials C150H C260H and C300H use IS0100 RC 1000S synthetic oil For all other large industrials use ISO68 RC 1000 This oil is specially formulated for FSCurtis Compressors and includes non Detergent type with anti foam anti rust and oxidation inhibitors PROPER Er LEVEL 1 For proper l
16. so equipped 3 Check system pressure Do not operate the compressor in excess of the A S M E pressure vessel rating for the receiver or the service rating of the compressor whichever is lower 4 Check cooling fan rotation Fan blades of the compressor flywheel force ambient air across fins of the intercooler and cylinder heads 5 Check all pressure relief valves for proper operation 6 Check control system for proper operation and to ensure all connections mechanical and electrical are properly tightened 7 Jog the starter switch to check the rotational direction of the compressor The flywheel should rotate in the counterclockwise direction as viewed when facing the flywheel INITIAL STARTING amp OPERATION This instruction manual as well as any instructions supplied by manufacturers of supporting equipment should be read and understood prior to starting the compressor If there are any questions regarding any part of the instructions please call your local FS Curtis distributor With the pre starting checklist completed and satisfied close the disconnect switch and start the compressor for electric units or engage the starter for gas units Watch and listen for excessive vibration and strange noises If either exists stop the compressor look for and correct the problem before re starting Observe compressor operation closely for the first eight hours of operation If any abnormal conditions are witnessed stop th
17. 8 11 140 Cylinder to Case 3 4 10 140 3 4 10 140 Discharge Flange 5 8 11 80 3 4 10 140 Connecting Rod 1 2 20 65 1 2 20 65 Intercooler 1 213 37 1 243 37 Side Door 5 16 18 7 5 16 18 7 End Plate 1 2 13 50 1 2 13 50 1 2 30 50 1 2 30 50 Valve Cover 3 8 16 20 3 8 16 20 Valve Hold down 3 846 17 3 8 16 17 Set Screw No intercooler ona NOTE single stage compressor MASTERLINE SERIES CAP200 Page 30 of 42 REV C NOV 2012 BELT TENSION CAUTION Over tightening the v belt s will result in overloading of the motor and or belt and pulley failure A loose belt will result in an unstable speed premature belt wear throwing belts and a high amp draw To change tension turn the adjusting bolt at the end of the base shown in figure 13 Retighten motor hold down bolts Grease both the motor and compressor pulleys once a year with lithium ball bearing grease Proper belt tensioning requires the use of a belt tension gauge to measure belt tension This tool is available at your local auto parts or hardware store 7 7 1 Motor Mounts 2 Take Up Bolt Fig 15 Motor mounts and take up bolt BELT TENSIONING INSTRUCTIONS 1 Loosen the motor mounting bolts but do NOT remove the nuts See fig 12 for the mounting bolt locations Do NOT attempt to adjust the take up bolt before loosening all of the motor mounting bolts attempting to do so will damage the unit 2 Consult table 7 for the a
18. CAP200 REV C AUG 2012 Azurs ML Series PRESSURE LUBRICATED TWO STAGE AIR COMPRESSORS Installation and Operations Manual WARNING Personal injury and or equipment damage will result by failing to pay attention to the vital safety information and instructions in this manual Carefully read understand and retain all safety information and instructions before operating this compressor MASTERLINE SERIES CAP200 Page 1 of 42 REV C NOV 2012 Model Serial Please have your units model and serial number ready when calling for service The model is found on the tank decal and the serial number is located on the compressor nameplate For Customer Service Technical Service or to order replacement parts please contact your local distributor FS Curtis Inc 1905 Kienlen Avenue St Louis Missouri 63133 phone 1 800 925 5431 fax 314 381 1439 email info curtistoledo com website www fscurtis com MASTERLINE SERIES CAP200 Page 2 of 42 REV C NOV 2012 Table of Contents Read Me First Section 1 Safety nee ae 9 4 System Diagram 5 7 Installation Section 2 RECEIVIN ee 8 PWTOLD ANAS ae ee UNS 9 Installation PEOCDOGUEG coctus nde en 10 14 P st diuidi B c 15 Electrical Requirements au 16 Wiring Diagrams Section 3 Simplex 1 phase and 3 phase unco 17 Duplex dual CAU QE 18 Large Industrial with Solenoid Valve
19. RLINE REBUILD KITS D96 C79 D97 C89 C98 Cil 12 quart case VO411 3 VO411 3 VO411 8 VO411 3 VO411 3 Cil and Air Filter CCC1838 CCC1839 CCC1840 CCC1840 CCC1841 Gasket Kit CCC1324 CCC1355 CD1249 CM1045 CM670 Valve Gasket Kit CO1869 CO1870 CO1871 CO1872 CO1873 Lower End Kit CO1915 CO1917 CO1920 CO1923 CO1924 Full Rebuild Kit CDB1450 CDB1451 CDB1452 CDB1453 CDB1454 C100 C100S C150H C200 C200S Oil 5 gallon pail VO421 1 VO421 1 VO421 1 VO425 VO421 1 Cil and Air Filter CCC1850 CCC1845 CCC1850 CCC1847 CCC1848 Gasket Kit CMA741 CMA742 CMA742 CMA817 CMA889 Valve Gasket Kit CO1874 CO1874 CO1874 C1875 C1875 Lower End Kit CO1927 CO1926 CO1929 CO1931 CO1930 Full Rebuild Kit CDB1456 CDB1457 CDB1458 CDB1459 CDB1460 C260H C300 C300S C300H Oil 5 gallon pail VO425 VO425 VO421 1 VO425 Cil and Air Filter CCC1847 CCC1846 CCC1849 CCC1846 Gasket Kit CMA817 CM965 CM965 CM965 Valve Gasket Kit C1875 C1876 C1876 C1876 Lower End Kit CO1932 CO1934 CO1933 CO1936 Full Rebuild Kit CDB1462 CDB1463 CDB1464 CDB1466 Table 9 Routine Maintenance Parts and Rebuild Kits for Masterline compressors MASTERLINE SERIES Page 36 of 42 CAP200 REV C NOV 2012 Troubleshooting If your problem is not caused after working through the checklist below please contact your local Problem distributor Cause Remedy Unit won t start Power
20. arge opening bushing up or down as necessary with clean bushings and fittings Note that the more bushings and fittings placed in the air distribution system the greater the opportunity for air leaks and breaks FS Curtis recommends the installation of drip legs in the distribution line Always install a safety relief valve in the distribution line between the compressor unit and in line shutoff valves If more than one compressor pumps into a common system a check valve in the distribution line of each compressor unit is recommended to prevent moisture from entering the cylinder head s when one compressor is idle A globe or gate valve WOG rated installed in the discharge line will allow compressor isolation from plant air system for compressor maintenance Note A safety relief valve should be located between the compressor and the globe gate valve Step 7 Install Compressor Intake IF APPLICABLE If the compressor intake is to be located away from the unit please use the following instructions to ensure safe and efficient operation Run a clean pipe to the compressor suction opening bushing up or down as necessary with clean bushings and fittings Note that the more bushings and fittings placed in the intake line the greater opportunity for air leaks and breaks If the run is over 10 feet in length use a larger pipe diameter to avoid excessive pressure drops When installing the pipes please pitch the piping down and slightly away fr
21. compressor process FS Curtis manufactures a broad array of compressor configurations to satisfy the needs of our diverse customer base Despite this diversity all FS Curtis two stage compressor configurations work off the same basic cycle Air is drawn into the compressor through the air intake and filter assembly The air enters the first stage a low pressure chamber where it is compressed the first time As air is compressed its temperature increases this hot air then enters the intercooler where the temperature is reduced Next the cooled air enters the second stage a high pressure chamber where the air is compressed a second time to even higher pressures and discharged into the tank An Ultra Pack option can be purchased with an installed air cooled after cooler which after the second compression stage cools the air to a 20 F approach temperature before being stored in the tank When the compressor has filled the tank to its pressure rating the pressure switch disengages which turns off the motor preventing the tank from over pressurizing Finally the tank has a ball valve which is opened or closed by the operator and lets air out of the tank the ball valve is depicted in Fig 1 in the open position MASTERLINE SERIES CAP200 Page 6 of 42 REV C NOV 2012 Duplex Units 1 Air Intake 4 Alternator Exact orientation of your system s components may be different from the layout in the figure Please see your
22. e On base mounted units with no receiver tank the installation of safety valves in the discharge line is the responsibility of the end user Failure to install safety valves in the discharge line could cause property damage injury and or loss of life pano operate compressor on a shipping skid or any other unapproved mounting surfaces e Do not by pass motor over current protection MASTERLINE SERIES CAP200 Page 4 of 42 REV C NOV 2012 Do not change the setting or in any way affect the operation of the safety valves e Turn off and lockout tagout the main power disconnect switch before attempting to work or perform any maintenance Do not attempt to service any part of this unit while it is running e Ensure that service personnel are properly grounded before attempting to service any part of the electrical system Do not operate the unit with any of its safety guards shields or screens removed Do not remove or paint over any DANGER WARNING CAUTION or instructional materials attached to the compressor Lack of information regarding hazardous conditions can cause property damage or personal injury Do not change the pressure setting of the pressure relief valve restrict the function of the pressure relief valve or replace the pressure relief valve with a plug Do not install a shutoff valve in the compressor discharge line without first installing a pressure relief valve of proper size and design bet
23. e compressor and correct the problem After two days of operation check belt tension oil level and inspect the system for leaks Additionally all electrical connections and mechanical fasteners should be checked for tightness and torqued as needed MASTERLINE SERIES CAP200 Page 24 of 42 REV C NOV 2012 START UP If the compressor is equipped with an automatic start stop control with pressure switch unloading it is automatically unloaded upon starting and will automatically load after attaining running speed Simply throw the power switch to start the unit If the compressor is equipped with a pilot valve the pilot valve must be manually unloaded prior to starting the compressor Maintenance For the first weeks the compressor needs time to break in The belt requires time to stretch and fit into the surface of the pulleys The piston rings need time to seat themselves into the cylinder walls and bearings need to wear into place For the first 100 hours or so the compressor will consume higher than normal amounts of oil until the break in process is complete FIRST MONTH MAINTENANCE Check oil level at the beginning of every week fill as needed see oil subsection e Check belt tension at the beginning of each week and tighten as required see belt tension subsection e Check bolts pulley clamp screws and jam nuts for tightness Torque if necessary see bolt torques subsection Shut Down Procedure The following procedures shou
24. elts several times in the first month of operation and adjust if necessary Thereafter check belt tension every three months MASTERLINE SERIES CAP200 Page 32 of 42 REV C NOV 2012 Unloader Maintenance Automatic Start Stop with Pressure Switch Operation Compressors C79 C89 D96 D97 and C98 A compressor equipped for start stop pressure switch operation has a centrifugal unloading mechanism or a solenoid valve piloted suction valve unloader to provide an automatic unloaded start This serves to prevent the compressor from starting against discharge line pressure The various methods are as follows Solenoid Valve Piloted Suction Valve Unloading Compressors D96 C79 C89 D97 C98 These models are provided with air pressure actuated suction valve unloaders such that when air pressure is supplied to the unloader the suction valve is held open and the compressor cannot pump even though running To provide automatic start stop operation with an unloaded start on these models a 3 way solenoid valve with a restricted exhaust and a pressure switch are used to achieve the following sequence of operation If the compressor shuts down or stops because the pressure switch opens the solenoid valve is de energized permitting air pressure from the receiver to act on the unloaders This unloads the compressor When the compressor is started again or the pressure switch closes the solenoid valve is energized which permits air from the unloader
25. l Switch The oil pressure safety switch is set and tested at the factory for 18 pounds minimum oil pressure If the oil pressure is below the set pressure the safety switch will cause the power to shut off After correcting the problem power can be restored by the following procedure 1 Push reset button on the pressure switch 2 Push start button on starter Oil Pressure Procedure Stop compressor and turn off power then drain oil from crankcase When facing flywheel remove the right hand side door from crankcase to expose closure screw in bearing plate No CM 836 Remove closure screw No CM 843 for models 200 260 and 260H No CM 924 for models 300 and 300H Add Curtis Toledo part CM 1073 2 steel slug Insert slug in opening flat against end of spring VO 103 in position between spring and closure tighten closure screw Under normal conditions the addition of this slug will increase the oil pressure 4 to 5 pounds Return side door restore oil level in crankcase check oil level and start compressor Note Oil Pressure Gauge if normal pressure of 28 to 30 pounds is not obtained by the above procedure contact factory service department Follow the above instructions to expose closure screw Note 1 2 dia Hex hollow head adjusting setscrew with lock nut in the closure screw see drawing LH 32 To adjust oil pressure 1 Loosen lock nut 2 To increase pressure turn set screw to the right tighten 3 To lower pressure
26. laim for shipping damages Refer to FREIGHT DAMAGE for complete details Shipping damage is not covered by FS Curtis s compressor warranty 2 Ensure that adequate lifting equipment is available for moving the compressor equipment and clear a path to the installation location to avoid damage to property or compressor 3 Turn off amp lock out the electrical disconnect switch before working on the unit to prevent the unit from starting unexpectedly 4 Read the compressor nameplate to verify the model and size ordered 5 Read the motor nameplate to be sure the motor is compatible with your electrical conditions volts phase and hertz 6 Read the pressure relief valve nameplate to be sure it does not exceed the working pressure of the compressor or any other component in the system 7 Read and understand the safety precautions contained within this manual The successful and efficient operation of compressor equipment depends largely upon the amount of care taken to install and maintain the equipment FS Curtis strongly recommends that any or all person s in charge of installing maintaining or servicing one of our compressors read and understand the entire contents of this manual and the respective compressor installation and operating instruction manual in order to perform such duties safely and efficiently 8 Remove all packing plastic foam and shipping related materials MASTERLINE SERIES CAP200 Page 9 of 42 REV C NOV 2012
27. ld be followed when stopping the compressor for maintenance or service WARNING Never assume a compressor is safe to work on just because it is not operating It could start at any time 1 Per O S H A regulation 1910 147 The Control of Hazardous Energy Source Lockout Tagout disconnect and lockout the main power source Display a sign in clear view at the main power switch that the compressor is being serviced 2 Isolate the compressor from the compressed air supply by closing the manual shutoff valve upstream and downstream from the compressor Display a sign in clear view at the shutoff valve stating that the compressor is being serviced 3 Lock open a pressure relief valve within the pressurized system to allow the system to be completely de pressurized NEVER remove a plug to relieve the pressure 4 Open all manual drain valves within the area to be serviced 5 Wait for the unit to cool before starting to service Temperatures of 125 can burn skin Some surface temperatures exceed 350 f when the com pressor is operating MASTERLINE SERIES CAP200 Page 25 of 42 REV C NOV 2012 Maintenance Schedule To assure maximum performance and service life of your compressor a routine maintenance schedule should be developed A sample schedule has been included to help you develop a maintenance schedule designed for your particular application Time frames may need to be shortened in harsher environments or during periods of extremel
28. lectrical enclosure or servicing WARNING Never assume a compressor is safe to work on just because it is not currently operating It could restart at any time Follow all safety precautions outlined in the Safety Precautions section NEMA electrical enclosures and components must be appropriate to the area installed Safety and efficiency are the primary concerns when selecting components for compressed air systems Products of inferior quality can not only hinder performance of the unit but could cause system failures that result in bodily harm or even death Select only top quality components for your system Call your local FS Curtis Distributor for quality parts and professional advice CAUTION Turn off and lockout tagout the main power disconnect switch before attempting to install the unit NOTE At installation the customer is to provide disconnect branch circuit over current protection and grounding between the power supply and the electrical control enclosure in accordance with the National Electric Code and or any local codes MASTERLINE SERIES Page 17 of 42 CAP200 REV C NOV 2012 Wiring Diagrams Simplex Single Phase and 3 Phase TURN OFF TAGOUT POWER BEFORE SERVICING L1 L2 L3 Overload relay Reset switch OP oDN Fig 10 Simplex Starter OL 71 Ia L Moto Br 5 B Power Supply to L1 and 2 Jumper T2 to L3 M t
29. not on Fuse blown Low voltage supplied Worn pressure switch contacts Starter overload tripped Broken loose electrical connections e Check breaker and or disconnect Replace the fuse or disconnect e Contact distributor Replace Reset starter overload Check electrical connections Flywheel motor rotating clockwise Incorrect lead connection Reverse the leads Flywheel motor rotating slowly Excessively dirty oil Heavy lubrication oil Oil thick due to low temperature Belt slipping Incorrect voltage Change the oil Use correct oil Increase ambient temperature above 40F See 6 Contact distributor Vibration pads not installed Unit not leveled Install vibration pads Level unit with metal shims Excessive Vibrations Unit not securely fastened Check for loose bolts on foundation compressor and motor Ambient air temperature too high Ensure adequate ventilation e Degraded oil Change oil Compressor Incorrect oil e Use correct oil overheats Clogged Air Intake e Replace filter and clean intake Interior or exterior fouling of the Clean intercooler intercooler e Working pressure too high e Lower working pressure Low belt tension e Adjust belt tension Belt slipping Worn belt e Replace e Incorrect belt Worn or misaligned pulley e Install correct belt e Replace or align pulley MASTERLINE SERIES Page 37 of 42
30. om the intake to ensure that debris and condensation drains away from the compressor MASTERLINE SERIES CAP200 Page 15 of 42 REV C NOV 2012 Post Installation Checklist WARNING Failure to perform the post installation checklist may result in mechanical failure property damage serious injury or even death Steps 1 through 9 should be performed prior to connecting the unit to a power source If any condition on the checklist is not satisfied make the necessary adjustments or corrections before starting the compressor 1 Remove all installation tools from the compressor and check for installation debris Abrasive dust can seriously damage the air intake and belt assemblies 2 All FS Curtis compressors are shipped from the factory filled with the required amount of Curtis Lube Plus Compressor Lubricant specially formulated for Curtis Compressors The oil level should register in the center of the oil sight glass or between the high and low marks on the dipstick For additional lubricant contact your authorized Curtis distributor Failure to use authorized lubricant will void the manufacturer s warranty 3 Check inlet piping installation 4 Check all pressure connections for tightness 5 Make sure all pressure relief valves in the air distribution are correctly installed 6 Make sure all guards are in place and securely mounted 7 Open all manual shutoff valves at and beyond the compressor and tank discharges 8 Check and tigh
31. ors installed options not shown do not have an intercooler 2 Air Compressor Please see your model s general arrangement for a precise 3 Intercooler configuration of systemcomponents Fig 3 Base mounted large industrial units Base mounted Large Industrial compressors are capable of outing large amounts of air at high pressures and come in single stage two stage or high pressure varieties They work off the same basic compressor cycle that tank mounted units operate on NOTE As these units do not come with a receiver tank the installation of safety valves in the discharge line is the responsibility of the end user MASTERLINE SERIES CAP200 Page 8 of 42 REV C NOV 2012 INSTALLATION IMPORTANT NOTICE Abide by all applicable state local and regulations when mounting and installing the compressor Failure to do so may result in injury or death and will void the manufacturer s warranty Contact your local government for more information CAUTION Improper lifting can result in component or system damage or personal injury Follow good shop practices and safety procedures when moving the unit Receiving Immediately upon receipt of compressor equipment and prior to completely uncrating the following steps should be taken 1 Inspect compressor equipment for damage that may have occurred during shipment If any damage is found demand an inspection from the carrier Ask the carrier how to file a c
32. p 4 Install Vibration Isolator pads and mount the compressor Exposure to excessive vibrations can significantly shorten the life of the compressor FS Curtis highly recommends mounting the unit on vibration isolator pads and the compressor should NEVER be operated without being securely fastened to the ground Using a level please check for proper alignment of the compressor Uneven installation will unbalance the compressor leading to excessive noise vibrations and wear Place a steel shim between the concrete and vibration pads and shim down as necessary for leveling Level the compressor so it can be bolted down securely Before tightening the bolts check to see that all four feet are resting on the foundation See fig 5 for mounting instructions for a floor stud and see fig 6 for mounting instructions for an anchor bolt LANGE NUT r FLANGE NUT Leave loose amp lock Leave loose amp lock with a back up nut with a back up nut RECEIVER FOOT ISOLATOR BACKING PLATE OR SHIMS IF RECEIVER FOOT NECESSARY ISOLATOR BACKING ISOLATOR PLATE OR SHIMS IF NECESSARY I ISOLATOR ANCHORED D FLOOR ANCHORED STUD 7 FLOOR STUD Fig 8 Anchored Floor Stud installation MASTERLINE SERIES CAP200 Page 13 of 42 REV C NOV 2012 Recommended Installation Use concrete anchor bolt
33. ppropriate deflection and tension values for challenge air units Table 8 contains deflection and tension values for CT units Average Model Tension D96 C79 3lb C89 D97 C98 5lb C100 C100H 8lb C200 C260 C200S C260H 32 0 0300 03005 C300H 32 0 Table 7 Masterline Belt Tensioning MASTERLINE SERIES CAP200 Page 31 of 42 REV C NOV 2012 DIRECTION Compressor OF APPLIED FORCE Pulley d sane alt 7 SE 7 Zn E N Motor y en Pulley N Fig 16 Proper belt tensioning 3 At the center of the span perpendicular to the belt apply pressure to the outer surface of the belt tension gauge as shown in figure 13 Apply force to the belt until the rubber ring on the deflection gauge is located at the original position of the belt Record the reading on the belt tension gauge and compare to the chart Reset the rubber ring on the belt tension gauge before taking another reading 4 Adjust the take up bolt to tighten or loosen the belt tension as required 5 Finger tighten ONE motor mounting bolt Using a straight edge check that pulleys are aligned and adjust motor as necessary 6 Finger tighten the remaining motor mounting bolts 7 Using a wrench or air tool incrementally tighten the mounting bolts in a basic crossing pattern 8 Re mount the belt guard DO NOT attempt to operate the unit without the belt guard securely in place 9 Recheck the tension of the new b
34. ring e Bleed excess oil e Use correct oil Allow 100 hours to break in rings e Replace with ring kit 11 Motor overloads Working pressure too high Incorrect voltage Lower working pressure e Contact distributor 12 Low Oil Pressure Large Industrials Compressor running slow Low oil level Dirty Oil Filter strainer Worn shaft bearings See 3 Change oil Clean and or replace e Replace MASTERLINE SERIES Page 38 of 42 Maintenance Check off List CAP200 REV C NOV 2012 NOTE Please keep a record of changes and have this list available when calling technical service OIL CHANGED Initials Date Changed Oil Low y n Initials Date Changed Oil Low y n BELT TENSIONING Initials Date Checked Measurement Initials Date Checked Measurement MASTERLINE SERIES Page 39 of 42 Maintenance Check off List CAP200 REV C NOV 2012 NOTE Please keep a record of changes and have this list available when calling technical service Valve Inspected Initials Date Checked Initials Date Checked Air Leak Checks Initials Date Checked Comments Initials Date Checked Comments MASTERLINE SERIES Page 40 of 42 Maintenance Check off List NOTE
35. sor and with adequate ventilation Avoid placement of the compressor in an area that is excessively hot dusty humid or contaminated with foreign gases such as ammonia or acid fumes The unit should never be operated at ambient temperatures above 104 f or below 32 If the ambient temperature is below 40 F FS Curtis recomm ends using Arctic oil Maintenance checks are required daily thus three 3 feet of space needs to be provided around the compressor for proper inspection Note If the unit or air intake is to be located outdoors please contact your local distributor for additional instructions Step 2 Remove the skid Remove and discard the shipping skid The compressor should NEVER be operated on a skid Step 3 Prepare the mounting surface See Fig 3 and Fig 4 for a tank mounted bolt pattern and prepare the surface accordingly See Table 2 for base mounted bolt patterns See Table 3 for acceptable installation methods Fig 4 Horizontal bolt hole pattern Fig 5 Vertical bolt hole pattern Horizontal A B Base Hole Recommended Vertical Tank D Hole Recommended Tank in in Size in Bolt Diameter gallons in Size in Bolt Diameter gallons in in 30 17 75 23 9 16 1 2 80 22 5 11 16 5 8 80 17 75 40 9 16 1 2 120 26 375 11 16 5 8 120 22 40 9 16 1 2 200 28 40 3 4 5 8 240 40 54 3 4
36. ten all connections mechanical and electrical as they may have loosened during shipment 9 After all the above conditions have been satisfied the unit can be connected to the proper power source MASTERLINE SERIES CAP200 Page 16 of 42 REV C NOV 2012 Electrical Requirements TANK MOUNTED UNITS The electrical installation of this unit should only be performed by a qualified electrician with knowledge of the National Electrical Code N E C O S H A code and or any local or state codes having precedence All FS Curtis tank mounted compressors come with a factory installed pre wired starter if you wish to provide your own starter please contact your local distributor for more information Check the electrical supply for voltage phase and frequency to see that they match the nameplate stampings on the motor magnetic starter solenoids and other controls Before attempting to service electrical systems ensure that maintenance personal are properly qualified and service procedures comply with NFPA 70 1984 National Electrical Code National Electrical Safety Code as well as any applicable state and local regulations Failure to abide by the national state and local codes may result in physical harm and or property damage and will void the manufacturer s warranty DANGER High voltage may cause personal injury or death per O S H A regulations 1910 137 disconnect and lockout tagout all electrical power supplies before opening the e
37. to exhaust through the restrictor plug The restrictor plug delays the loading action of the compressor until it has reached operating speed Constant Speed Control All compressors A compressor unit set up to run continuously has an unloading mechanism to stop the pumping action of the compressor at a predetermined cut out pressure and start the pumping action at some lower pre determined cut in pressure This unloading cycle is accomplished by one of the following ways On single stage and some two stage compressors The suction valves are held open during the unloading cycle On some two stage compressors the low stage suction valve is held open while a by pass valve unloads the high stage during the unloaded cycle These methods employ air pressure from the discharge line or receiver to actuate unloader pistons which actuate the unloading mechanism Control of the air pressure to and from the unloaders is accomplished by either an air pressure actuated pilot valve or by a three way solenoid valve controlled by a pressure switch The electric motor must also be started no more than six 6 times per hour to provide adequate motor life MASTERLINE SERIES CAP200 Page 33 of 42 REV C NOV 2012 Constant Speed Controls with Piston Type Unloaders All compressors The unloaders are of O ring and piston type with pressure and over travel compensating spring This in turn contacts the valve which has a built in unloader fork and return spring
38. turn set screw to the left loosen Note under normal conditions one full turn of the set screw will change the oil pressure approximately 4 pounds Hold set screw position and tighten lock nut Return side door restore oil level in crankcase check oil level and start compressor Note Oil Pressure Gauge if normal pressure 28 to 30 pounds is not obtained by the above procedure contact factory service department MASTERLINE SERIES Page 28 of 42 Bolt Torques Masterline Compressors CAP200 REV C NOV 2012 Consult exploded Torque Torque Torque for part Size ft lb Size 516 Size ft lb Head Bolt 3 8 16 25 3 8 16 25 5 8 UNC x4 1 2 140 Cylinder to Case 7 16 14 24 7116 14 24 HHCS 5 8 11UNC x 1 3 4 68 Connecting Rod 3 824 28 3 8 24 28 HHCS 3 8 24UNF x 2 3 4 15 HHCS 1 2 13UNC x 4 1 2 Intercooler i i RR HHCS 1 2 13UNC x 3 3 4 9 HHCS 3 8 16UNC x 1 1 4 Side Door 5 16 18 7 5 16 18 7 Machine Screw 5 16 x 3 8 13 HHCS 3 8 16UNC 1 1 4 End Plate 3 8 16 28 38 16 ZEN 37 1 2 13UNC X1 5 50 Valve Cover Vc di 2 Nut Stud 15 Valve Hold down 39 46 17 3 8 16 17 3 8 16UNC x 1 3 4 17 Set Screw Unloader APU 1 1 8 12 30 7 8 14 30 718 14 50 HP LP SV Plug Valve Assembly 80 Torque N Torque Size ft lb Size ft lb Head Bolt 5 8 11UNC x 4 1 2 140 5 8 11UNC x 4 1 2 140 Cylinder to Case HHCS 5 8 11UNC x 13 4 68
39. ubrication the compressor shall not be POM EL de operated below the minimum or above the maximum Ce d PR R P M recommended for the various models S homi 2 Maintain oil level mid way between the upper and lower lines of the crankcase sight gage 3 Stop compressor to add and gauge oil Fig 14 Oil sight glass reading 4 Do not fill above the upper line and do not operate compressor with oil level below the lower line NOTE ISO100 RC 1000S synthetic oil is available as an option on all Masterline Compressors Using synthetic oil will significantly extend the life of your compressor OIL CAPACITIES MODEL HORSEPOWER MIN MAXIMUM OIL CAPACITY NUMBER hp RPM RPM D96 5 500 800 4 Pints C79 7Ve 500 900 4 Pints D97 10 500 800 5 Pints C89 15 600 950 5 Pints C98 20 25 500 950 6 Quarts C100 C100S 25 40 500 850 4 Gallons C150H 40 60 550 900 4 Gallons C200 02005 50 600 950 4 Gallons C260H 50 60 600 835 4 Gallons C300 C300S 75 125 550 950 6 Gallons C300H 100 125 550 835 6 Gallons Table 5 MASTERLINE SERIES CAP200 Page 27 of 42 REV C NOV 2012 Oil Pressure Large Industrials C200 and up Base mounted large industrial units are equipped with a factory installed oil pump and oil pressure gauge Proper oil pressure readings are as follows Oil Gauge Pressure Normal Pressure 28 to 30 PSIG Minimum Pressure 20 PSIG Switch Cutoff Pressure 18 PSIG Oi
40. ween the shutoff valve and the compressor Do not use plastic pipe unapproved rubber hose or lead tin soldered joints in any part of the compressed air system Alterations must not be made to this compressor without FS Curtis expressed written approval Do not operate the compressor in excess of the A S M E pressure vessel rating for the receiver or the service rating of the compressor whichever is lower Surface temperatures can exceed 400 f power off the unit and allow it to cool before touching any surface of the compressor e Provisions should be made to have the instruction manual readily available to the operator and maintenance personnel If for any reason any part of the manual becomes illegible or the manual is lost contact your local distributor Your State and or local OSHA regulations may require a Pressure Vessel Permit to operate this equipment Obtaining a permit is the sole responsibility of the owner lessor or operator of the equipment Contact your State Local OSHA for more information MASTERLINE SERIES CAP200 Page 5 of 42 REV C NOV 2012 System Diagram Simplex Units Air Intake Magnetic Starter Exact orientation of system components may vary Please see your model s general Air Compressor Pressure Switch arrangement diagram for a precise Intercooler Vibration Pads with configuration of system components hardware mounts Fig 1 Simplex two stage air
41. y heavy use Make copies of this checklist and retain copy of the checklist enter dates and maintenance person s initials in the appropriate spaces Makes copies of this checklist and retain copies of the completed checklists for potential warranty purposes Enter the dates and maintenance person s initials in the appropriate spaces Keep the checklist and this Operations Manual readily available near the compressor DAILY MAINTENANCE Check oil level Check oil for discoloration and filth Drain oil and replace if required Drain drip legs and traps in air distribution system Open drain cock located at the bottom of the tank to relieve condensation Drain intercooler Large Industrial Check for oil leaks WEEKLY MAINTENANCE e Manually operate the pressure relief valves to be certain they are working Clean the cooling surfaces of the intercooler and compressor Check the compressor for air leaks Check the compressed air distribution system for leaks Check Oil Pressure record reading at oil change Large Industrials MONTHLY MAINTENANCE e Check motor belt tension Check fan belt tension C200 C260 and C300 Check bolt torques pulley clamp screws and jam nuts for tightness Torque if necessary Inspect entire air distribution system for leaks Check all connections mechanical and electrical and tighten as necessary EVERY THREE MONTHS Change oil more frequently in harsher environments e Inspect valves for
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