RIX Industries 2PS-L-N2 Operating Instructions Manual
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RIX Industries 2PS-L-N2 Operating Instructions Manual

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MAN-2PS2B-N2
Operating Instructions
For RIX Compressor Family: 2PS2B-N2
Models: 2PS-L-N2, 2PS-L50-N2, 2PS-H-N2, 2PS-H50-N2 &
2PS-HH-N2
Rix Industries
2 Stage, Oil-Less
Air-Cooled
Nitrogen Compressor
This manual, including information and products referenced herein, to be provided by Seller
("Products") are subject to U.S. export control laws and will not be resold, re-exported, or
retransferred, directly or indirectly, to any person in violation of U.S. Export Administration
Regulations.
4900 Industrial Way, Benicia, CA 94510 | www.rixindustries.com | 707.747.5900

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Summary of Contents for RIX Industries 2PS-L-N2

  • Page 1 MAN-2PS2B-N2 Operating Instructions For RIX Compressor Family: 2PS2B-N2 Models: 2PS-L-N2, 2PS-L50-N2, 2PS-H-N2, 2PS-H50-N2 & 2PS-HH-N2 Rix Industries 2 Stage, Oil-Less Air-Cooled Nitrogen Compressor This manual, including information and products referenced herein, to be provided by Seller (“Products”) are subject to U.S. export control laws and will not be resold, re-exported, or retransferred, directly or indirectly, to any person in violation of U.S.

  • Page 2: Revision History

    Major formatting and content update; see ECO-010962 7/12/2021 Parts List See ECO-011049 10/4/21 Parts List, Fig. See ECO-011231 10/26/21 Discharge RV Setpoint Correction 01/21/22 Appendix Updated Rev of 24923 04/13/22 ii, iii, 8-44 Addition of Sections 5.9 and 7.11 RIX Industries MAN-2PS2B-N2 Page i...

  • Page 3: Table Of Contents

    Compressor Symptoms ............................ 11 Chapter 7 - Corrective Maintenance ..........................13 Introduction................................13 Gas Leak Check ..............................13 Cylinder Heads ..............................13 Compressor Valves ............................14 Compression Cylinders ............................ 15 Compression Rings ............................15 Piston Assembly ..............................16 RIX Industries MAN-2PS2B-N2 Page ii...
  • Page 4 Main Bearings ..............................17 Piston to Head Clearance ..........................17 7.10 Clearances & Tolerances ..........................18 7.11 Connecting Rod Bearings ..........................19 Appendix ....................................20 RIX Industries MAN-2PS2B-N2 Page iii...

  • Page 5: Parts, Service & Technical Support

    Parts, Service & Technical Support Manufacturer: RIX Industries 4900 Industrial Way Benicia, California 94510 USA Phone: 707-747-5900 Fax: 707-747-9200 Parts Fax: 707-748-0398 www.rixindustries.com/request-spare-parts/ Parts Dept. Hours: 6:30-15:30 PST Compressor model and serial number must be provided with all inquiries. Compressor Model Family...

  • Page 6: Safety Precautions

    This symbol means if precaution is not taken, it may cause bodily injury or damage to the machine. 7. Do not touch cylinder heads or discharge gas lines from the heads up to the heat exchanger inlets. These are hot and can cause serious burns. RIX Industries MAN-2PS2B-N2 Page v...

  • Page 7: Compressor Warranty

    H. Normal Wearing parts are defined, but not limited to the following: Seals, Gaskets, O-rings, piston rings and riders, bulbs, fuses, and anti-corrosion devices such as zincs. RIX Industries reserves the right to evaluate these items for material workmanship and defects on a case-by-case basis.

  • Page 8: Compressor Specifications

    30 to 70 psig Suction Temperature Range: 0 to 100 °F Nominal Flow Rate: 2PS-L-N2: 30 SCFH** @ 30 psig, 70°F Suction Gas Output 2PS-L50-N2: 30 SCFH** @ 30 psig, 70°F Suction 2PS-H-N2: 60 SCFH** @ 30 psig, 70°F Suction 2PS-H50-N2: 60 SCFH** @ 30 psig, 70°F Suction...

  • Page 9: Chapter 1 - Compressor Overview

    A small amount of inert piston ring dust will pass into the gas stream; this can be filtered out if desired. RIX Industries MAN-2PS2B-N2 Page 1...

  • Page 10: Crankcase Lubrication

    Crankcase Lubrication This oil-less compressor utilizes sealed bearings. Oil-less compressors contain absolutely no oil within the whole compressor package removing the likelihood of any oil carry over, thus eliminating contamination. RIX Industries MAN-2PS2B-N2 Page 2...

  • Page 11: Chapter 2 - Installation

    DANGER Do not install ball valves in either suction or discharge plumbing. If closed quickly, these valves can cause explosion. RIX Industries MAN-2PS2B-N2 Page 3...

  • Page 12: Electrical Connections

    After extended storage, or if stored without climate control, the compressor heads and valves should be removed and inspected for corrosion. Bearings should also be inspected and/or replaced and the relief valves should be cleaned, rebuilt, and/or replaced. RIX Industries MAN-2PS2B-N2 Page 4...

  • Page 13: Chapter 3 - Start-Up & Operating Parameters

    It is recommended that the Service Log in the appendix of this manual be used to note operating pressures, temperatures, and maintenance done at hours of compressor operation. If pressures do not fall near the above stated values, or vary from your historical pressures, see Chapter 6 – Troubleshooting for corrective action. RIX Industries MAN-2PS2B-N2 Page 5...

  • Page 14: Chapter 4 - Control System

    "closed" point of the switch at which point the compressor will restart. To manually stop the unit, switch the HOA switch to the OFF position. RIX Industries MAN-2PS2B-N2 Page 6...

  • Page 15: Control Logic Description

    Relief Valve Suction 75 psig Relieve excess Device Stage Set Point Function pressure build up Interstage 700 psig Discharge 2200 psig Motor Overload Motor FLA Shutoff Pressure Switch Suction 30 falling Shutoff Discharge 2200 rising Shutoff RIX Industries MAN-2PS2B-N2 Page 7...

  • Page 16: Chapter 5 - Routine Inspection & Scheduled Maintenance

    Before performing any maintenance, the compressor power supply should be locked Out of Service to prevent starting which could cause injury to personnel or damage to the equipment. Relieve all internal pressure and allow piping to cool before repair. RIX Industries MAN-2PS2B-N2 Page 8...

  • Page 17: Gas Filter Service

    Both cylinders should have a surface finish of 12-16 µin Ra crosshatch. If the cylinder bore surface finish is out of tolerance it will reduce ring life. RIX Industries MAN-2PS2B-N2 Page 9...

  • Page 18: Connecting Rod Bearings Inspection

    Control instruments should be verified for accuracy annually. Pressure gauges, switches, and relief valves can be bench tested on a hydro fixture to confirm the accuracy of each device. Use only deionized water for these tests. RIX Industries MAN-2PS2B-N2 Page 10...

  • Page 19: Chapter 6 - Troubleshooting

    Replace relief valve Compressor is vibrating Crankcase mounting bolts Tighten crankcase mounting excessively are loose bolts Motor mounting bolts are Tighten motor mounting loose bolts Piston clearances not Measure and adjust piston properly adjusted clearance RIX Industries MAN-2PS2B-N2 Page 11...
  • Page 20 Compressor valves have Replace compressor valves failed Loud metallic knocking Piston is hitting valve Measure and adjust piston clearance Replace back pressure regulator Ticking noise from cylinder Compressor valve is worn Replace compressor valve head or broken RIX Industries MAN-2PS2B-N2 Page 12...

  • Page 21: Chapter 7 - Corrective Maintenance

    4. Lift the head from the cylinder. To reinstall the cylinder heads, reference Figure 1 and follow the instructions below: 1. Install a new O-ring at the top of the cylinder. 2. Correctly orient the head with the cylinder and install. RIX Industries MAN-2PS2B-N2 Page 13...

  • Page 22: Compressor Valves

    4 round, through holes on the valve seat. Installing the reed upside down will result in improper valve operation. 3. Install O-ring in the 2 stage head valve pocket. RIX Industries MAN-2PS2B-N2 Page 14...

  • Page 23: Compression Cylinders

    2. Remove and discard the used compression rings, expanders, and rider rings. An O-ring pick (P/N 88-5812) is helpful for removing used rings. To reinstall the piston, follow the instructions below: RIX Industries MAN-2PS2B-N2 Page 15...

  • Page 24: Piston Assembly

    3. Install bearing plate and hex screw to fully secure the assembly to the crankshaft. Hex screw must be secured with a small amount of Loctite primer and threadlocker (RIX P/N’s: 35- 8595 & 35-7641) and torqued to 180 in-lbs. 4. Reinstall cylinders and heads per Sections 7.3 and 7.5. RIX Industries MAN-2PS2B-N2 Page 16...

  • Page 25: Main Bearings

    3. Measure the clearance between the piston and the top of the cylinder. Shims may be added or removed to achieve piston to cylinder clearance of .011" to .015". 4. Reinstall the head per Section 7.3. RIX Industries MAN-2PS2B-N2 Page 17...

  • Page 26: 7.10 Clearances & Tolerances

    Connecting Rod, Upper Bore Ø0.687” +.001” Wrist Pin Ø0.5000” -.0005” Stage Piston Ø1.21” Not a wearing part Stage Cylinder Ø1.251” +.005” Stage Piston Ø0.497” -.003” Stage Cylinder Ø0.501” +.003” Valves Inspect for warping, scratches, or pitting RIX Industries MAN-2PS2B-N2 Page 18...

  • Page 27: 7.11 Connecting Rod Bearings

    11. Assemble the connecting rod into the piston assembly by pushing the wrist pin through the bore in the rod, through the needle bearing and then back through the other side of the bore in the rod. 12. Reinstall snap rings into their grooves. RIX Industries MAN-2PS2B-N2 Page 19...

  • Page 28: Appendix

    Appendix 1. Compressor Parts List 2. Figure 1: Compressor Cross Section, Fastener Detail 3. Figure 2: Compressor Cross Section, Pump Detail 4. Figure 3: 1 Stage Valve Detail 5. Figure 4: 2 Stage Valve Detail RIX Industries MAN-2PS2B-N2 Page 20...
  • Page 29 16. Figure 15: Control Box Wiring Diagram 17. Figure 16: Electrical Schematic 18. Figure 17: Flow Schematic 19. Interface Drawing 20. A5089: O-ring Installation & Material Information 21. Pressure Switch Maintenance Instructions 22. Declaration of Conformity 23. Service Log RIX Industries MAN-2PS2B-N2 Page 21...
  • Page 30 RING, RIDER, 1/2 DIA, 123-011-5 8 EACH O-RING, VITON 18-C1147-14-1G 1 EACH RING, RIDER, 1 3/4 DIA, 15-A10130 1 EACH VALVE SPACER 17-24088 1 EACH 2PS WRIST PIN 34-746 1 EACH SCREW, FLAT HD, ALLEN *Recommended Spares RIX Industries MAN-2PS2B-N2 Page 22...
  • Page 31 54P-44CBUSS 3 EACH ELBOW, MALE, 1/4 TUBE TO 55-D2621-6 1 EACH LINE, FILTER INLET A77-505 2 EACH FILTER 55-D2621-5 1 EACH LINE, 2ND STG INLET 54P-4CBUSS 1 EACH ELBOW, MALE, 1/4 TUBE TO *Recommended Spares RIX Industries MAN-2PS2B-N2 Page 23...
  • Page 32 4 EACH BOLT, HEX HEAD, 40-A7802 1 EACH BRACKET, 20-4867 4 EACH WASHER, LOCKING 61-8251 0.8 FOOT CONDUIT, NONMET PVC 1/2" 138-8255 1 EACH FITTING, NONMET 1/2" 45EL 20-1013 1 EACH WASHER, CONDUIT, *Recommended Spares RIX Industries MAN-2PS2B-N2 Page 24...
  • Page 33 SEE "OPTIONS" 2 EACH 041116-01 1 EACH ELECTRICAL BOX, 32-22809 4 EACH BOLT, SHCS, 1/4-20, 5/8 L 20-12877 4 EACH WASHER A8-B5778 1 EACH PISTON ASSEMBLY 041209-01 3 EACH WASHER, FLAT, USS, 1/4 *Recommended Spares RIX Industries MAN-2PS2B-N2 Page 25...
  • Page 34 PART NUMBER QUANTITY MOTOR SHEAVE OPTION (POSITION NUMBER 61) 2PS-H-N2 36-6J15 1 EACH 2PS-H50-N2 36-6J18 1 EACH 2PS-HH-N2 36-6J15 1 EACH 2PS-L-N2 36-6J15 1 EACH 2PS-L50-N2 36-6J18 1 EACH MOTOR OPTION (POSITION NUMBER 114) 2PS-H-N2 107-489 1 EACH 2PS-H50-N2 107-489...
  • Page 35 EPR-TIMERS 041116-423 3 EACH TERMINAL BLOCK 041116-424 1 EACH FEM8S END SECTION 041116-425 2 EACH FULL INSULATED QUICK CONNECTOR 041116-426 6 EACH PAN HEAD SCREW, #10-32 X 3/8L 041116-427 1 EACH GROUNDING LUG *Recommended Spares RIX Industries MAN-2PS2B-N2 Page 27...
  • Page 36 FIGURE 1: COMPRESSOR CROSS SECTION, FASTENER DETAIL RIX Industries MAN-2PS2B-N2 Page 28...
  • Page 37 FIGURE 2: COMPRESSOR CROSS SECTION, PUMP DETAIL RIX Industries MAN-2PS2B-N2 Page 29...
  • Page 38 FIGURE 3: 1 STAGE VALVE DETAIL RIX Industries MAN-2PS2B-N2 Page 30...
  • Page 39 FIGURE 4: 2 STAGE VALVE DETAIL RIX Industries MAN-2PS2B-N2 Page 31...
  • Page 40 FIGURE 5: EXTERIOR FASTENER DETAIL RIX Industries MAN-2PS2B-N2 Page 32...
  • Page 41 FIGURE 6: MOTOR AND CONTROL BOX MOUNTING RIX Industries MAN-2PS2B-N2 Page 33...
  • Page 42 FIGURE 7: SUCTION PLUMBING DETAIL RIX Industries MAN-2PS2B-N2 Page 34...
  • Page 43 FIGURE 8: INTERSTAGE PLUMBING DETAIL RIX Industries MAN-2PS2B-N2 Page 35...
  • Page 44 FIGURE 9: FINAL DISCHARGE PLUMBING DETAIL RIX Industries MAN-2PS2B-N2 Page 36...
  • Page 45 FIGURE 10: COOLING FAN SUB-ASSEMBLY DETAIL RIX Industries MAN-2PS2B-N2 Page 37...
  • Page 46 FIGURE 11: BELT INSTALLATION DETAIL RIX Industries MAN-2PS2B-N2 Page 38...
  • Page 47 FIGURE 12: GUARD MOUNTING DETAIL RIX Industries MAN-2PS2B-N2 Page 39...
  • Page 48 FIGURE 13: CONTROL BOX DETAIL, 1 OF 2 RIX Industries MAN-2PS2B-N2 Page 40...
  • Page 49 FIGURE 14: CONTROL BOX DETAIL, 2 OF 2 RIX Industries MAN-2PS2B-N2 Page 41...
  • Page 50 FIGURE 15: CONTROL BOX WIRING DIAGRAM RIX Industries MAN-2PS2B-N2 Page 42...
  • Page 51 FIGURE 16: ELECTRICAL SCHEMATIC RIX Industries MAN-2PS2B-N2 Page 43...
  • Page 52 FIGURE 17: FLOW SCHEMATIC RIX Industries MAN-2PS2B-N2 Page 44...
  • Page 53 DESCRIPTION DATE APPROVED This drawing and the information and data contained herein are the confidential and proprietary property of RIX Industries and may not be used, copied, reproduced, or disclosed for any purpose, without the written ECO-011049 21/08/11 permission of RIX Industries.
  • Page 54 CUI//SP-CTI/PROPIN O-RING INSTALLATION & MATERIAL INFORMATION All RIX part numbers for o-rings begin with a 123 prefix. This is followed by a second set of 3 digits which corresponds to US Standard AS568 sizing. RIX normally uses a Viton 70 durometer o-ring, in which case the part number will have a “-5”...
  • Page 55 ADJUSTMENT INSTRUCTIONS Differential/Pressure/Vacuum Switch General: 1. Check proof pressure of switch on name plate or catalog. NEVER EXCEED THIS PROOF PRESSURE. 2. Note the adjustable range of switch (increasing or decreasing pressure) as listed in the catalog or on the name plate.

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