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HydraMaster RX20 NEXTGEN 120 VAC Owner's Manual

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RX20 Rotary Extractor
No part of this manual may be reproduced or used in any form or by any means (i.e. graphic, electronic, photocopying or electronic
retrieval systems) without the express written permission of HydraMaster. Specifications and information in this document are
subject to change without prior notice. All rights reserved. © 2018 HydraMaster
DOMESTIC AND INTERNATIONAL
Owner's Manual
700-041-030
700-041-031
700-041-330
700-041-331
HydraMaster
11015 47
Avenue West
th
Mukilteo, Washington 98275
MAN-47328 Rev.A, April 2018
(P/N 000-182-171D)
700-041-332
700-041-333
700-041-334
700-041-407

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April 25, 2025

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Summary of Contents for HydraMaster RX20 NEXTGEN 120 VAC

  • Page 1 No part of this manual may be reproduced or used in any form or by any means (i.e. graphic, electronic, photocopying or electronic retrieval systems) without the express written permission of HydraMaster. Specifications and information in this document are subject to change without prior notice. All rights reserved. © 2018 HydraMaster...
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  • Page 3: Table Of Contents

    Felt Vacuum Seal ................... 9-1 High Pressure Valve Assembly .............. 9-2 Locking Mechanism (Bushing Replacement) ......... 9-3 TROUBLESHOOTING ................. SECTION 10 WARRANTY INFORMATION ............... SECTION 11 HydraMaster Limited Warranty ............... 11-1 i - RX-20 / CMX-20 Owner’s Manual i - RX-20 Owner’s Manual...
  • Page 4 List of Figures Figure 2-1. RX20 Optional Equipment.................2-3 Figure 3-1. Fully Assembled RX20 ................3-1 Figure 4-1. Solution and Vacuum Hose Connections ..........4-1 Figure 4-2. Powerhead Maneuvers Like a Buffer ............4-2 Figure 4-3. Incorrect Maneuver ...................4-3 Figure 4-4. Correct Cleaning Patterns .................4-4 Figure 5-1.
  • Page 5 Figure 9-1. Carefully Pry Seal Up and Lift Out ............9-1 Figure 9-2. Use Can to Hold Oil for Seal ..............9-2 Figure 9-3. Quick Connect, Back Plate and Stainless Steel Hose Removed from Upper Handle Assembly...........9-3 Figure 9-4. Remove Cotter Pin and Remove Dog Point Set Screw ......9-4 Figure 9-5.
  • Page 6 This page intentionally left blank. RX-20 / CMX-20 Owner’s Manual - iv RX-20 Owner’s Manual - iv...

  • Page 7: Introduction

    1- Introduction Congratulations You now own a piece of equipment that incorporates the latest in carpet, tile and grout cleaning technology. Your foresight in purchasing an RX20 shows that you care enough to give your customer the maximum cleaning process available. You have invested in not only a cleaning tool, but a marketing tool that will enhance your professional image in every way.

  • Page 8: Contact Information

    CONTACT INFORMATION If you have any questions regarding the operation, maintenance or repair of this machine, refer to the following information and contact the appropriate HydraMaster department. Hours Telephone Numbers E-mail Addresses Tech Support: Monday-Friday (425) 775-7275 Support techsupport@hydramaster.com 7:00 a.m. to 5:00...

  • Page 9: Warnings, Cautions And Notices

    WARNINGS, CAUTIONS AND NOTICES HydraMaster uses this WARNING symbol throughout the manual to warn of possible injury or death. This CAUTION symbol is used to warn of possible equipment damage. This NOTICE symbol indicates that federal or state regulatory laws may apply, and also emphasizes supplemental information.
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  • Page 11: Machine Specifications

    2- Machine Specifications RX20 - 120 VAC RX20 - 230 VAC Length 23” 23” Base Width 21” 21” Height - Standard Up to 43” Up to 43” Weight 62 lbs 62 lbs 1/2 HP Totally Enclosed 1/2 HP Totally Enclosed, Motor Fan-Cooled Fan-Cooled...

  • Page 12: Configurations

    RX20 - 120 VAC RX20 - 230 VAC Handle Assembly Foam Grips Foam Grips Transportation 8” diameter, 1-1/2” Wide; 8” diameter, 1-1/2” Wide; Wheels Gray, Non-Marking Gray, Non-Marking Electric Cord 50 ft, 14/3 50 ft w/M-F IEC Ends 230 V The base, exhaust manifolds, handle, gear box housing and cleaning heads are all cast aluminum.

  • Page 13: Figure 2-1. Rx20 Optional Equipment

    OPTIONAL EQUIPMENT To better meet your business needs, HydraMaster offers these options that you can add to your basic rotary extractor system: RX Pad and Bonnet Driver If you want this Order this P/N: This attachment allows the RX to quickly...
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  • Page 15: Assembly Instructions

    3 - Assembly Instructions To prepare your RX20 for use, follow these instructions: Remove the machine from the packaging. Inspect the machine carefully for any damage that may have occurred during shipping. Remove the solid shipping plug from the top of the gear box (see Figure 3-1). Check the gear box lubricant level (see page 6-4 of this Owner’s Manual).
  • Page 16 This page intentionally left blank. Owner’s Manual: 3-2...

  • Page 17: Operating Instructions

    4 - Operating Instructions 1 1/2” Hose PREPARATION Inlet Handle Adjustment Pull Tee knob up to release handle. Adjust the handle to a comfortable height. Release Tee knob to lock in place. Most technicians have found better control and less fatigue when the Solution Hose handle is in a low position - just around Quick Connect...

  • Page 18: Operation

    OPERATION CONTROL FUNCTIONS There are control triggers located on each side of the handle under the rubber hand grips. As you operate the PowerHead, the trigger on your right-hand side controls the electric motor that drives the cleaning heads. The Safety switch located on the top right hand side of the handle must be depressed while the trigger is pulled.

  • Page 19: Edging Tool

    making it hover in one spot. (The hovering maneuver is useful for removing stubborn stains, as well as removing furniture indentions.) Do not operate your RX20 on dry carpets. The friction generated by the revolving cleaning heads may damage fibers in the carpet. Once you have become familiar with the speed and movement of the machine, practice making it hover in one spot.

  • Page 20: Figure 4-4. Correct Cleaning Patterns

    To view an online demo, access this website: http://www.youtube.com/watch?v=wY236ahDIow&feature Figure 4-4. Correct Cleaning Patterns Owner’s Manual: 4-4...

  • Page 21: Cleaning Information

    5 - Cleaning Information CLEANING PATTERNS For regular carpet cleaning use an overlapping arc pattern three times over the same area (two passes with solution and one pass for drying). When cleaning carpets, first clean in circular pattern, then use the overlapping arc pattern to dry the area. Dirtiest areas may require two or more cleaning passes.

  • Page 22: Special Information

    SPECIAL INFORMATION When you clean some plush carpets, you may notice a “pilling” effect. (Pilling occurs when fluffy particles appear on carpet surfaces; it is caused by fibers that loosen because of a weak twist or snags.) With an RX20, loose yarns form balls and are kicked aside as the cleaning heads revolve.

  • Page 23: Machine Maintenance

    6 - Machine Maintenance Good care and regular maintenance of your RX20 will result in a long, dependable life for the unit. Keep in mind that your RX20 will be in full view of your customer. An RX20 that is dirty and unkempt in appearance can cause your business or professional image to suffer.

  • Page 24: Figure 6-2. Check Jet Spray For Even Flow

    Clean or replace them as needed. Check the spray pattern of each jet for uniform flow. An uneven spray will cause improper flow of the cleaning solution (see Figure 6-2). Do NOT spray the high pressure solution in your face or eyes. Bodily injury can Figure 6-2.

  • Page 25: Figure 6-6. Lubricate Vacuum Seal On Top Of Hub

    (see Figure 6-6). 14. Coat the shaft with TKX All-Purpose Lube ® (HydraMaster P/N 000-087-006) or a similar lubricant. Re-install the vacuum head assembly onto the shaft by rotating it counter-clockwise (Figure 6-7). An accumulation of debris in the gear box, if not Figure 6-6.

  • Page 26: Periodic Maintenance

    PERIODIC MAINTENANCE Check the oil level in the gear box on a monthly basis. This is a permanently lubricated gear box. You do not need to change the oil. However, maintaining the proper oil level is important. To check the oil level, remove the vent plug and look into the gear box. Turn the star until you can see the inspection hole in the gear.

  • Page 27: Transport And/Or Storage

    TRANSPORT AND/OR STORAGE Whenever your RX20 is transported or stored, HydraMaster recommends that you remove the star assembly (cleaning head). The machine will then sit flat on the floor and remain more stable, especially during transport. FREEZE WARNING AND PROTECTION Your RX20 can suffer damage from freezing, as can any equipment that functions with the use of water.
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  • Page 29: Electrical Diagrams

    REVISION DESCRIPTION CODE DATE CHKD APPVD 7- Electrical Diagrams RELEASE DRAWING. LRIP 04/20/2017 L.O.L. L.R.K. L.R.K. Figure 7-1. Wiring Diagram - 120VAC / 60Hz 000-179-105 Rev A MOMENTARY MOMENTARY SWITCH SWITCH 16 GA.(BLK) 16 GA.(BLK) 16 GA.(BLK) 16 GA.(BLK) 16 GA.(BLK) 14 GA.(BLK) 16 GA.(WHT) RELAY...
  • Page 30 REVISION DESCRIPTION CODE DATE CHKD APPVD RELEASE DRAWING. 05/25/2017 L.O.L. L.R.K. L.R.K. LRIP Figure 7-2. Wiring Diagram - 220 V, 50 Hz / 60 Hz 000-179-104 Rev. A 14 GA.(BLU) 14 GA.(BLU) MOMENTARY MOMENTARY SWITCH SWITCH 16 GA.(BRN) 14 GA.(BLU) 16 GA.(BLU) 16 GA.(BLU) RELAY...
  • Page 31 „ Valve Stem Assembly Parts List .................8-13 „ Solution Valve Assembly Parts List ..............8-14 „ Vacuum Shoe and Skid Assembly Parts List ............8-15 „ Edging Tool No Relief Assembly Parts List ............8-16 „ Cartridge Filter Assembly Parts List ..............8-17 HydraMaster RX20 8-1: Assemblies and Parts Lists...

  • Page 32: Figure 8-1. Rx20 Final Assembly

    2. SEE ENG-45975 OR ADHESIVE MATERIAL PRODUCTION LINE 700-041-030 RX20 NXG HE 110V 604-999-107 REFERENCE CARD FOR SEALANT INFORMATION. NEXT ASSY USED ON APPVD L.R.K. 02/22/2018 3. WIRING DIAGRAM 000-179-105 Assemblies and Parts Lists: 8-2 HydraMaster RX20 APPLICATION SCALE: 1:3 CODE: WEIGHT: 63.05 SHEET 1 OF 1...
  • Page 33 SCREW, 3/8”-16UNC X 1.00” LG. HEX HEAD 000-068-041 HOSE, BASE OUT RX-CD 000-174-003 WASHER, 1/4” FLAT S/S 000-081-490 LABEL SET, RX20 NXG 000-174-057 WASHER, 3/8” LOCK 000-052-521 NIPPLE, 1/8” NPT x 1/4” JIC HydraMaster RX20 8-3: Assemblies and Parts Lists...
  • Page 34 APPVD information. RELEASE DRAWING 02/22/2018 L.O.L. L.R.K. L.R.K. Assemblies and Parts Lists: 8-4 HydraMaster RX20 WASHER, 3/8" LOCK S. STEEL 000-174-057 WASHER, 3/8" I.D. x 0.628 O.D. x 0.03 THK. S. STEEL 000-174-055 SCREW, 3/8"-16UNC X 1.00" LG. HEX HEAD S.
  • Page 35 Figure 8-3. Base and Drive Train Assembly - View 2 of 2 604-054-107 Rev. A HydraMaster RX20 8-5: Assemblies and Parts Lists...
  • Page 36 * Prior to operating the machine, replace the shipping plug (P/N 000-106-001) with the vented plug (P/N 000-106-014). See page 3-1 in this manual for more information. Use clear silicon to attach item 3 to item 1. Assemblies and Parts Lists: 8-6 HydraMaster RX20...
  • Page 37 CORD, POWER 14/3 GRAY x 31" W/ MALE VARIOUS 000-178-046 COLLAR, ROD LOCKING - RX-CD 2017 AISI 303 000-020-076 HydraMaster RX20 BUSHING, 1/2" OD X 5/8" LG. BRONZE FLANGE BRONZE 8-7: Assemblies and Parts Lists 000-020-077 BRACKET, HANDLE TO BASE - RX-20 2018 - COATED 04...
  • Page 38 INTO BORE UNTIL FLANGE TOUC CASTING SURFACE. REAM HOLE W/ Ø3/8" REAMER IF NECESSARY TO ROD SLIDES FREELY. DETAIL A MUST SLIDE FREELY AFTER ASSEMBLY. 6. PART OF LABEL SET P/N 000-081-490. SCALE 2 : 1.5 Assemblies and Parts Lists: 8-8 HydraMaster RX20...
  • Page 39 Figure 8-6. Upper and Lower Handle Assembly - View 3 of 3 604-051-107 Rev. B 000-081-491 LABEL, UPPER HANDLE - FRONT 000-081-493 LABEL, UPPER HANDLE REAR HydraMaster RX20 8-9: Assemblies and Parts Lists NOTES: SEE ENG-45975 OR ADHESIVE MAT FOR SEALANT INFORMATION. 2. AFTER LOCTITE & ASSEMBLY, TURN OUT 1/4 TURN EACH.
  • Page 40 TRIGGER, HANDLE - RIGHT HAND 000-108-012 PROTECTOR, POWER CORD RELIEF 000-174-003 WASHER, 1/4” FLAT S/S 000-052-050 QUICK CONNECT, 440 MALE W/ VITON STD 000-174-049 WASHER, 5/16” FLAT 000-157-149 RELAY, AC RELAY 120V 000-177-034 WHEEL, 8” Assemblies and Parts Lists: 8-10 HydraMaster RX20...

  • Page 41: Figure 8-7. Vacuum Head Assembly

    NEXT ASSY USED ON .X= .1 APPLICATION .XX= .03 .XXX= .010 ANGULAR = 2° ASSEMBLY, VACUUM HEAD - H.E. HydraMaster RX20 - - - - - - 8-11: Assemblies and Parts Lists - - - - - - 604-999-202 RX-20HE 220V/50HZ DRAWN S.M.M.
  • Page 42 WASHER, 1/4” FLAT 000-052-515 NIPPLE, 1/8” NPT X 4” LG. 000-174-049 WASHER, 5/16” FLAT 000-094-019 NUT, 1/2”-13UNC HEX * When replacing 000-107-020 Hub, order 000-107-0201 which includes the 000-139-001 Ring already inserted into 000-107-020. Assemblies and Parts Lists: 8-12 HydraMaster RX20...
  • Page 43 RING,SOL.VALVE STEM - SNAP RING- S/S AISI 316 000-139-004 UNS C36000 / RING, SOLUTION VALVE KEEPER - BRASS 000-139-003 ASTM B16 H02 HydraMaster RX20 PLUNGER, SOLUTION VALVE 8-13: Assemblies and Parts Lists AISI 304 000-107-129 O-RING,H/M VALVE PLUNGER- LARGE EPDM 000-097-010 O-RING,3/32"x1/16"W...

  • Page 44: Figure 8-9. Solution Valve Assembly

    STAINLESS 600-012-001 ASSEMBLY, VALVE STEM - STANDARD VARIOUS 600-012-002 SPRING, SOLUTION VALVE AISI 316 000-155-003 Assemblies and Parts Lists: 8-14 HydraMaster RX20 O-RING,5/8"x1/16"W EPDM 000-097-011 UNS C36000 / CAP, SOLUTION VALVE - BRASS 000-027-001 ASTM B16 H02 ITEM NO. QTY.

  • Page 45: Figure 8-10. Vacuum Shoe And Skid Assembly

    S.M.M. - - - CHECKED E.K.J. 1/30/2006 604-053-002 RX-20 000-064-012 604-053-100 NEXT ASSY USED ON APPVD E.K.J. 1/30/2006 604-053-002 NEXT ASSY APPLICATION SCALE: 2:1 CODE: ECR #531 WEIGHT: 0.56 SHEET 1 OF 1 HydraMaster RX20 8-15: Assemblies and Parts Lists...

  • Page 46: Figure 8-11. Edging Tool No Relief Assembly

    AFTER PVC GLUE HAS CURED USE SILICONE TO FIL Edging Tool Assembly Parts List Item Part Number Description 000-001-216 ADAPTER, EDGING - COATED E-04 000-052-432 CUFF, 1-1/2” X 2-1/8” 000-125-949 TUBE, EDGING TOOL - NO RELIEF Assemblies and Parts Lists: 8-16 HydraMaster RX20...

  • Page 47: Figure 8-12. Cartridge Filter Assembly

    Item Part Number Description 000-049-052 FILTER CARTRIDGE,1/4”BRASS 000-052-171 HOUSING, 1/4” BRASS FILTER 000-094-118 NUT, BRASS JET X 1/4” FNPT HydraMaster RX20 8-17: Assemblies and Parts Lists NUT, BRASS JET X 1/4" FNPT BRASS 000-094-118 HOUSING, 1/4" BRASS FILTER BRASS 000-052-171...

  • Page 48: Repair And Replacement

    9 - Repair and Replacement FELT VACUUM SEAL The felt vacuum seal plays an important part in the optimum performance of your RX20. If the part is worn or unlubricated, it will not form a proper seal. Lack of a proper seal will impair the vacuuming capabilities of the unit and therefore leave behind more water in the carpet than is desirable.

  • Page 49: High Pressure Valve Assembly

    HIGH PRESSURE VALVE ASSEMBLY In the event that the valve assembly needs to be replaced, follow this procedure (see Figure 9-3). Remove the 440 male quick connect (A) with a wrench. Remove the five hex head screws (B) in the back plate on the handle and lift the back panel off.

  • Page 50: Locking Mechanism (Bushing Replacement)

    Locking Mechanism (Bushing Replacement) If the locking mechanism becomes loose, tighten it by following these simple steps: Remove the cotter pin and dog point set screw from the lock collar. (see Figure 9-4) Hold onto the lock collar and spring while sliding the pull rod out of the handle.

  • Page 51: Figure 9-5. Reinstall Dog Point Set Screw

    Ensure the rod is fully seated in the pocket of the LATCH PLATE. Apply Loctite(B1) to the threads of the SCREW, ¼-20 UNC DOG POINT SET (000-143-735) and thread the screw into the center hole of the COLLAR, ROD LOCKING – RX20 (000-020-076) ensuring that the dog point of the set screw completely enters the blind hole in the rod.
  • Page 52 HANDLE LATCH ASSEMBLY: LATCH PLATE REPLACEMENT AND ADJUSTMENT INSTRUCTIONS Refer to HydraMaster Engineering Assembly Drawings: 604-051-105 and 604-999-105 for complete details PROPERLY SUPPORT THE OPERATOR HANDLE DURING THE REMOVAL AND IN- STALLATION OF THE LATCH ASSEMBLY SO IT DOES NOT FALL AND CAUSE INJU-...
  • Page 53 Slide the axle out of the BRACKET, HANDLE TO BASE-RX20 COATED (000-015- 1327) through the side of the lower handle casting, and all the way through the PLATE, HANDLE ADJUSTING (000-105-764). It may be necessary to rotate the axle as you slide it and / or to wiggle the PLATE, HANDLE ADJUSTING (000-105- 764) so the axle will pass through and free it from the assembly.
  • Page 54 All recommended maintenance must be performed by competent service personnel. Records of periodic maintenance must be kept and copies may be required to be furnished to HydraMaster before this warranty is honored. Coverage Schedule Frame, Handle, Body 3 years...

  • Page 55: Troubleshooting

    10 - Troubleshooting 1.0 LOW VACUUM FLOW AT THE CLEANING HEADS Possible Cause Solution 1.1 Hub not sealing properly. Replace felt seal with a lubricated one. 1.2 Restricted air flow. Remove cleaning head and clear all vacuum lines and heads of debris. 1.3 Low vacuum flow from Refer to the Troubleshooting section of the source power...
  • Page 56 5.0 LOSS OF OIL FROM GEAR BOX Possible Cause Solution 5.1 Loose or ruptured oil Replace damaged oil seal. Refill gear box with oil. seal. 6.0 NO POWER Possible Cause Solution RX20 Have an electrician inspect unit for possible wiring or motor problems. Locate an unused power source.

  • Page 57: Warranty Information

    HydraMaster unless otherwise specified in the listing below. HydraMaster agrees, at its option, to repair at the point of shipment, or to replace without charge, any parts or parts of products of HydraMaster’s manufacture, which within the specified warranty period shall be proved to HydraMaster’s satisfaction to have been...

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