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RIX Industries SA-6B Series Operating Instructions Manual

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RIX AIR COMPRESSOR
This compressor is designed for compressing ambient air only and is not suitable
for compressing oxygen, oxygen enriched air, or oxygen enriched gases.
*See Serial Number Page for applicable serial numbers.
Rev. 5/16
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MODEL SA-6B*
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  • Page 1 RIX AIR COMPRESSOR MODEL SA-6B* WARNING This compressor is designed for compressing ambient air only and is not suitable for compressing oxygen, oxygen enriched air, or oxygen enriched gases. *See Serial Number Page for applicable serial numbers. Rev. 5/16...

  • Page 2: Table Of Contents

    TABLE OF CONTENTS PART I Chapter Page TABLE OF CONTENTS ........i, ii SERIAL NUMBER PAGE ........iii SAFETY PRECAUTIONS ........iv RELIABILITY DO'S AND DONT'S ......v WARRANTY ............vi Chapter Page Chapter Page GENERAL INFORMATION ......1-1 SCHEDULED MAINTENANCE ....... 4-1 Safety Precautions ........
  • Page 3 PART 1 (Continued) LIST OF FIGURES Figure Title Page Figure Title Page Compressor Layout ......... 2-2 Thrust Plate Alignment ........6-3 2-1a Wiring for Optional Pressure Switch Piston Details ..........6-5 Used with Gasoline Engine Drive ....2-3 7-1a Compressor Cross Section ......7-14 Electrical Schematic, 208-240VAC 3 Phs ..
  • Page 4 SERIAL NUMBER PAGE RIX MODEL SA-6B This manual is applicable to all RIX Industries Model SA-6B Air Compressors bearing one of the following Serial Numbers. 7900 – 7923, 8111 - 8135 8300 – 8333, 8415 - 8464 8664 – 8708, 8873 - 8890 8948 –...
  • Page 5 SAFETY PRECAUTIONS WARNING A high pr essur e vessel is a concentr ated ener gy sour ce which could r elease explosively. Very special care must be exercised while filling SCUBA tanks or other high pressure containers. The pressure vessel should be placed behind a barricade which will shield personnel from injury in the event the vessel should rupture.
  • Page 6 SA COMPRESSOR RELIABILITY DO's & DON' T' s DO' s grease the rod end bearings and thrust rider every 25 hours of operation or every three (3) months. drain moisture separators every 10 minutes or more often as needed in a high humidity climate. WARNING Failur e to pr oper ly dr ain the moistur e seper ator s could r esult in water car r y over and possible damage to the compr essor .
  • Page 7 Every RIX compressor is carefully inspected, assembled and thoroughly tested before shipment is made from the factory and each new compressor sold by RIX Industries is warranted to be free from defect in material and workmanship for a period of six (6) months from the date of shipment for the SA compressors.

  • Page 8: General Information

    CHAPTER 1 GENERAL INFORMATION AND SAFETY PRECAUTIONS SAFETY PRECAUTIONS 1.1.1 GENERAL. To insure the safe operation of this equipment, the operator must: Follow the instructions in the manual for starting, stopping, and maintaining the compressor. Locate the compressor inlet where the air is pure, away from exhausts or other harmful gasses.

  • Page 9: Introduction

    INTRODUCTION 1.2.1 PURPOSE AND SCOPE. The purpose of this manual is to provide all information pertinent to the operation and maintenance of the RIX Model SA-6B high pressure, oil free, air compressor. This publication sets forth requirements and procedures for safe operation and servicing, and includes descriptive data and tests necessary to achieve a functional understanding of the compressor.
  • Page 10 TABLE 1-1 Reference Data Descriptive Data RIX Industries Model SA-6B oil free, three stage, axial piston, portable air compressor package. Functional Power required: 5.0 brake horsepower (5.0) HP electric motor or 8.0 HP gas engine recommended.) Pressure: 3600 psi maximum (standard relief valve setting) (4500 &...
  • Page 11 TABLE 1-2a GASOLINE ENGINE DRIVE PACKAGE Equipment, Accessories and Documents Supplied (Std.) OVERALL QTY. ITEM NAME DIMENSIONS WEIGHT 1 ea. RIX Model SA-6B with Wisconsin Engine 33"L x 19"W x 18"H 150 Lbs. 1 ea. RIX Model SA-6B with Honda Engine 35"L x 19"W x 19"H 155 Lbs.

  • Page 12: Operation

    CHAPTER 2 OPERATION INTRODUCTION 2.1.1 GENERAL. Figure 2-1 shows the layout of the compressors, including all controls and indicators. The operator should be familiar with all controls and safety features prior to initial start-up. The operation of each packaged system, gas and electric, is covered in separate section of this chapter.
  • Page 13 STARTER BOX OPPOSITE SIDE (NOT SHOWN) HIGH PRESSURE 2ND & 3RD STAGES 2ND & 3RD STAGES (OPTIONAL) (OPTIONAL) WISCONSON 7.5 HP MODELS ONLY...

  • Page 15: Controls & Indicators On Gasoline Engine Driven Compressors

    NOTE Care must be exercised to adjust the pressure setting of the switch only when the compressor is turned off and with pressure relieved from the discharge line. Attempting to reset the switch while under pressure can damage the threads of the adjustment mechanism and may require replacement of the switch.

  • Page 16: Controls & Indicators On 5.1 Electric Motor Driven Compressors

    (Gasoline) pumping bulb for hand priming the carburetor. Make sure the gas tank and fuel line are kept clear of the hot exhaust. 2.3.1.3 FUEL PUMP AND FILTER BOWL. The fuel pump is a bellows type driven by (Gasoline) crankcase pressure pulsation. The filter bowl is glass so that any accumulation of dirt or water can be easily detected.
  • Page 17 208 - 208 - 240 V 240 V BLUE COIL PRESSURE 208 – 240 V SWITCH PURPLE FUSE MOTOR STARTER PACKAGE STOP START HOURMETER (Optional) FIGURE 2-2 Electrical Schematic for Starter P/N 776-67-1 Shown Wired for 208-240 VAC/3 Ø/60 Hz MOTOR SHALL BE WIRED FOR COUNTER-CLOCKWISE ROTATION WHEN VIEWED FROM THE SHIEVE SIDE OPTIONS:...
  • Page 18 CONTROL SIGNAL 120 V 460 V 460 V 1-L1 BLUE PRESSURE COIL SWITCH 120 V PURPLE FUSE MOTOR STARTER PACKAGE STOP START HOURMETER (Optional) FIGURE 2-2A Electrical Schematic for Starter P/N 776-67-5 Shown Wired for 460 VAC/3 Ø/60 Hz w/ 120 VAC Control Signal MOTOR SHALL BE WIRED FOR COUNTER-CLOCKWISE ROTATION WHEN VIEWED FROM THE SHIEVE SIDE OPTIONS:...
  • Page 19 208 – 240 V BLUE PRESSURE COIL SWITCH 208 – 240 V PURPLE FUSE MOTOR STARTER PACKAGE STOP START HOURMETER (Optional) FIGURE 2-2B Electrical Schematic for Starter P/N 776-68 Shown Wired for 208-240 VAC/1 Ø/60 Hz MOTOR SHALL BE WIRED FOR COUNTER-CLOCKWISE ROTATION WHEN VIEWED FROM THE SHIEVE SIDE OPTIONS: 1) PRESSURE SWITCH –...
  • Page 20 380 V 380 V 1-L1 BLUE COIL PRESSURE 380 V SWITCH PURPLE FUSE MOTOR STARTER PACKAGE STOP START HOURMETER (Optional) NEUTRAL FIGURE 2-2C Electrical Schematic for Starter P/N 776-67-2 Shown Wired for 380 VAC/3 Ø/50 Hz MOTOR SHALL BE WIRED FOR COUNTER-CLOCKWISE ROTATION WHEN VIEWED FROM THE SHIEVE SIDE OPTIONS: 1) PRESSURE SWITCH –...

  • Page 21: Deleted

    Figure 2-2b gives the recommended wiring instructions for 208/240 volts single phase service. The motor controller should be mounted as close to the compressor as possible, within sight of the discharge pressure gauge and wired as a permanent installation. Make sure the compressor base plate is properly grounded. Overload heaters are supplied with the equipment and must be installed in the motor controller.
  • Page 22 2.6.2.2 PRE-START CHECK. Check the following items prior to starting the engine: (Gasoline) Check level of oil in engine crankcase. Check that the fuel tank is filled with regular gasoline. Check that there is no pressure in the compressor by opening the separator drain valves.
  • Page 23 one. 2.6.2.6 EXCHANGING SCUBA TANKS. The engine should be shut off and the (Gasoline) (Gasoline) pressure relieved before changing SCUBA tanks. 2.6.2.7 SECURING EQUIPMENT. When the compressor is to be stored for more (Gasoline) (Gasoline) than a month, the gasoline should be run out of the carburetor to prevent the formation of "varnish"...
  • Page 24 2-10...
  • Page 25 2-10a...
  • Page 26 TABLE 2-1a GASOLINE ENGINE DRIVE PACKAGE Simplified Star t-up Check List The operator should be familiar with all the steps covered in the text for a safe start-up. This table is provided as a quick reference and check list. START-UP Check layout of compressor, fuel tank, SCUBA tank and suction filter.

  • Page 27: Electric Motor Drive Operation

    2.6.3 ELECTRIC MOTOR DRIVE OPERATION (Electr ic) 2.6.3.1 SET-UP. The compressor is designed to be installed permanently but can be used (Electric) portably wherever there is a sufficient source of electric power. Locate the compressor where there is plenty of air circulation and room for access all around the equipment.
  • Page 28 TABLE 2-1b ELECTRIC MOTOR DRIVE PACKAGE Simplified Star t-up Check List The Operator should be familiar with all steps covered in the text for a safe start up. This table is provided as a quick reference and check list. START-UP Check installation of the compressor, motor starter and wiring.

  • Page 29: Functional Description

    CHAPTER 3 FUNCTIONAL DESCRIPTION INTRODUCTION 3.1.1 GENERAL. This chapter contains a complete description of the functioning of the equipment. The compressor is divided into two parts: the mechanical system and the air flow system. A complete understanding of each system is useful when servicing and troubleshooting the equipment.
  • Page 30 The air from the first stage flows through stainless steel tubing wrapped around the outside of the cylinder housing to help remove the heat of compression. This air is compressed again by the second stage to a higher pressure, through cooling tubing and a condensate separator.

  • Page 33: Introduction

    CHAPTER 4 SCHEDULED MAINTENANCE INTRODUCTION. The following tables and paragraphs outline the maintenance actions required to obtain the maximum service life from the equipment. operator is encouraged to keep a written log that records operating hours and number of tanks filled. The maintenance schedules are based on total hours operating.

  • Page 35: Engine Air Cleaner (Gasoline)

    TABLE 4-2 Oil Grade Selection Chart Season or Temperature Grade of Oil Spring, Summer, or Autumn SA 30 +120˚F to 40˚F Winter - +40˚F to +15˚F SA 20 Below +15˚F SAE 10W-30 ENGINE AIR CLEANER. The engine is equipped with an oiled, filter type air (Gasoline) cleaner that should be serviced at least every 50 hours of operation 4.4.1...

  • Page 37: General Inspection

    GENERAL INSPECTION. When the compressor shroud is removed for lubrication, the compressor should be inspected for leaks, looseness, and accumulation of dirt. 4.6.1 LEAKS. Inspect all plumbing and pressurized components for evidence of leakage. Inspect tubing to make sure there is no contact with other tubing or surfaces that might wear through.

  • Page 38: Compressor Troubleshooting

    CHAPTER 5 TROUBLESHOOTING GENERAL. Table 5-1 is a troubleshooting chart which lists trouble indications and the probable cause and suggested remedy for each. A reference column directs the reader to the appropriate section or paragraph in the scheduled and corrective maintenance sections of this manual.
  • Page 39 TABLE 5-1 Compressor Troubleshooting (Continued) TROUBLE PROBABLE CAUSE REMEDY REF. Overheating. Loose fan. Tighten. Dirty inlet screen on shroud. Clean. Lack of grease on rod bearings. Relubricate. 4.5.2 Dirty fins on cylinders or dirty interstage Clean. 6.3.3 cooling tubing. Inadequate ventilation. Driver running Lack of grease on rod bearings.
  • Page 40 TABLE 5-1 Compressor Troubleshooting (Continued) TROUBLE PROBABLE CAUSE REMEDY REF. Excessive Noise Insufficient adjustment on thrust riders. Make correct adjustment. 6.2.2 Leaky piston seals. Replace. 6.4.1 Worn rider rings. Check if excessive piston play on 6.4.1 1st & 2nd stage, replace rider rings.

  • Page 41: Corrective Maintenance

    CHAPTER 6 CORRECTIVE MAINTENANCE INTRODUCTION This chapter deals with corrective maintenance of the compressor. The servicing instructions for the gasoline engine will be found in the engine repair manual. The procedures covered here are divided into three sections. The first deals with adjustments and alignments of the equipment.

  • Page 42: Assembly Techniques

    6.2.2 THRUST PLATE ADJUSTMENT. The thrust plate adjustment is important for smooth operation. The thrust riders retain the thrust bearings located beneath the swash plate bearings. This prevents the outer race of the swash bearing from rotating. See Figure 6-3 The thrust bar is rigidly mounted against the case and carries the primary load.
  • Page 43 Compressor End Pivot End Bolt Thrust Plate Thrust Bearings Spring Floating End Bolt .75-.88 Thrust Riders Compressed (Surfaces Must Be Spring Length Lubricated With Grease) Observe Check Adjust Movement Lock Parallelism Lock Loosen all nuts. Adjust bolt as shown, keeping the thrust riders as parallel as possible. Rotate compressor to check for movement.

  • Page 44: Repair Of Assemblies & Sub-Assemblies

    6.3.3 CLEANING PARTS. Parts that come in contact with the air stream should be cleaned using 111 Trichloroethane (SPRAYON Hi-Tech 00747 Safety Solvent and Degreaser (Ref.) or equal), or a solution of detergent and hot water. Petroleum products could lead to contamination of the breathing air and should not be used. All surfaces of the compressor that are used for cooling (fins on cylinders, tubing, etc.) should be kept clean for maximum heat transfer efficiency.
  • Page 46 Inspect the four compression rings and two pressure breaker rings for wear or breakage. Typically, the top compression ring will wear out first, transferring the load to the next ring and on down the line. As long as the rings are not disturbed, the piston will seal almost perfectly until the last ring is worn out.
  • Page 47 A rod end bearing can fail very rapidly if the spherical steel ball starts to wear. Maximum wear always occurs on the side of the ball facing the cylinder. Rod end bearing life can be increased by periodically (every 100 hours) removing the hold down bolt and rotating the ball to expose a fresh surface to face the cylinders.
  • Page 48 Care should be exercised when reconnecting tubing and pressure fittings to avoid cross-threading or over-tightening. Nuts on fittings should be snugged down finger tight and then wrenched a quarter turn. Run the compressor briefly after reassembly to develop pressure and check for leaks, using a soapy water solution. 6.4.5 CYLINDERS.

  • Page 49: Torque Chart

    TABLE 6-2 Torque Chart Torque values are based on lubricated threads. For dry threads, increase torque by ten percent. RECOMMENDED ITEM NO. DESCRIPTION TORQUE VALUE 7-1-7 Bearings Nuts Fan End 200 Ft. Lbs. Sheave End 100 Ft. Lbs. 7-1-10 Fan Bolt, 3/8-24NF x 1-1/4" 35 Ft.
  • Page 50 Serial Number Page of this manual. Column 1 gives the figure and index number. The part number is listed in Column 2, followed by a quantity and description in Columns 3 and 4. All are supplied through RIX Industries, Code 28953, 4900 Industrial Way, Benicia, CA 94510; Telephone 707-747-5900, FAX 707-747-9200.
  • Page 51 PARTS LIST TABLE 7-1 (Continued) Figure & Index No. Part No. Qty. Description 181-A4124 Bearing 66-A3290 Spacer, Bearing 32-8064 Bolt, Hex Hd., 1/2-20NF x 4" Lg. A148-C1374 Shroud Assembly 106-16 Set Screw, Half Dog Pt., 1/4-20NF x 3/4" Lg. 53-4098 Nut, 1/4-20NC 32-4619 Bolt, Hex Hd., 1/4-28NF x 1/2"...
  • Page 52 PARTS LIST TABLE 7-1 (Continued) Figure & Index No. Part No. Qty. Description 317-A3306 Guide Pin 34-A3307 Bolt, Rod End 20-A3308 Washer, Rod End A8-A3309-1 Piston Assembly, 3rd Stage (Incls. A-F) 8-B2116 (A) Piston 18-B2117-3P (B) Rider Ring 18-C1791-4.5P (C) Compression Ring 123-012-5 (D) Expander 31-A3310...
  • Page 53 PARTS LIST TABLE 7-1 (Continued) Figure & Index No. Part No. Qty. Description 15-B3569 Valve Seat, 2nd Stage 15-A4151 Valve Stop, 3rd Stage Inlet 15-B2706 Reed Valve, 3rd Stage Inlet/Discharge 15-B3570 Valve Seat, 3rd Stage 2-B4290 Head, 3rd Stage 123-018-5-90 O-ring, 3rd Stage Head 54-376 45°...
  • Page 54 PARTS LIST TABLE 7-1 (Continued) Figure & Index No. Part No. Qty. Description -116 32-1178 Bolt, Soc. Hd., 5/16-24NF x 2 1/4" Lg. -116.1 20-657 AN Washer, 5/16 S/S -117 32-1177 Bolt, Soc. Hd., 5/16-24NF x 2 1/2" Lg. -118 32-1176 Bolt, Soc.
  • Page 55 TABLE 7-2 PARTS LIST MOISTURE SEPARATORS Figure & Index No. Part No. Qty. Description A208-A7114 Separator Assembly, 2nd Stage (Incls. 1-10) 208-A4331 123-912-5 O-ring 208-B2619 Body 77-27 Filter Tube 342-A4216 Spinner 715-62 Hand Valve 54P-1/4MMSB Tee, Male Branch 515-269 Relief Valve, Set @ 1000 psi 54P-6CBUSS Male Elbow 54P-6FBUSS...
  • Page 56 TABLE 7-3 PARTS LIST GASOLINE ENGINE DRIVE Figure & Index No. Part No. Qty. Description Ref. Model SA-6 Compressor & Separators 32-1015 Hex Head Bolt, 1/4-28NF x 1 1/4" 20-1003 Flat Washer, 1/4 Pl. Stl. 20-627 Washer 20-1016 Lockwasher, 5/16 Pl. Stl. 32-1126 Hex Head Bolt, 3/8-16NC x 3/4"...
  • Page 57 TABLE 7-3 PARTS LIST GASOLINE ENGINE DRIVE (Continued) Figure & Index No. Part No. Qty. Description A73-433-3 Fill Hose Assembly, 3' 91-A4423-1 Key, 1/4 Sq. x 1 3/4" Lg. Pl. Stl. REMOVED REMOVED 54P-125HBL54 Male Barbed Insert 32-8066 Hex Head Bolt, 5/16-24NF x 2 3/4"...
  • Page 58 TABLE 7-3 PARTS LIST GASOLINE ENGINE DRIVE (Continued) Figure & Index No. Part No. Qty. Description FILL ASSEMBLY OPTIONS The following items replace the corresponding items listed above when the compressor is ordered with the Low Pressure or High Pressure Scott-Pak Fill Assembly options. A554-539 L.P.
  • Page 59 TABLE 7-4 PARTS LIST ELECTRIC MOTOR DRIVE Figure & Index No. Part No. Qty. Description Omitted items not included in this Assembly Ref. Model SA-6 Compressor & Separators (See Table 7-2 for Separators Parts) A70-D1462 Bedplate Assembly 41-3VX425-1* V-Belt 36-2F3V300-1.13* Motor Sheave 66-A4547 Spacer, Moisture Separator...
  • Page 60 TABLE 7-4 PARTS LIST ELECTRIC MOTOR DRIVE (Continued) Figure & Index No. Part No. Qty. Description 40-A4614 Bracket, Air Filter Mounting 32-4136 Hex Head Bolt, 1/4-20NC x 3/4" Lg. Pl. Stl. 20-1017 Lockwasher, 1/4" Pl. Stl. 53-4098 Hex Nut, 1/4-20NC Pl. Stl. 40-B3065 Beltguard Bracket 553-7...
  • Page 61 TABLE 7-4 PARTS LIST ELECTRIC MOTOR DRIVE (Continued) Figure & Index No. Part No. Qty. Description FIG 2-2: 208-240V, 3 PHASE, 60 Hz MOTOR / STARTER OPTION 776-67-1 Magnetic Starter, 5 H.P. 220 Volt 107-415 Electric Motor, 5 H.P. 240/460 Volt, 3600 RPM FIG 2-2A: 460V, 3 PHASE, 60 Hz MOTOR / STARTER OPTION (120 VAC COIL) 776-67-5 Magnetic Starter, 5 H.P.

  • Page 62: Recommended Spare Parts & Tools

    If your third stage piston is reusable, it can be reringed with new compression rings, expanders and rider rings. Consult the factory for prices, availability and any additional information you may require. All parts and spare parts are available through RIX INDUSTRIES 4900 Industrial Way Benicia, CA 94510 : (707) 747-5900 /...
  • Page 67 (OPTIONAL)
  • Page 69 (OPTIONAL)
  • Page 71 A116-432 YOKE (OPTIONAL)
  • Page 72   Maintenance Assistance Kit RIX Industries Model SA-6E   Compressor condition can be evaluated more quickly and accurately with the installation of a 2 stage pressure gauge. Variation of the interstage pressure indicates a problem condition such as worn piston rings, sticky valves, or air leaks.

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