HydraMaster RX20 NEXTGEN 120 VAC User manual

RX20 Rotary Extractor
Owner’s Manual
700-041-030 700-041-332
700-041-031 700-041-333
700-041-330
700-041-331
700-041-334
700-041-407
HydraMaster
11015 47th Avenue West
Mukilteo, Washington 98275
MAN-47328 Rev.A, April 2018
(P/N 000-182-171D)
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. Specications and information in this document are
subject to change without prior notice. All rights reserved. © 2018 HydraMaster
DOMESTIC AND INTERNATIONAL

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i - RX-20 / CMX-20 Owner’s Manuali - RX-20 Owner’s Manual
Table of Contents
INTRODUCTION.......................................................................................... SECTION 1
Contact Information................................................................................. 1-2
Warnings, Cautions and Notices............................................................. 1-3
MACHINE SPECIFICATIONS ...................................................................... SECTION 2
Congurations......................................................................................... 2-2
ASSEMBLY INSTRUCTIONS ...................................................................... SECTION 3
OPERATING INSTRUCTIONS..................................................................... SECTION 4
Preparation.............................................................................................. 4-1
Operation ................................................................................................ 4-2
Maneuvering the RX20 ........................................................................... 4-2
Edging Tool ............................................................................................. 4-3
CLEANING INFORMATION ......................................................................... SECTION 5
Cleaning Patterns.................................................................................... 5-1
Special Information ................................................................................. 5-2
Cleaning Hints......................................................................................... 5-2
MACHINE MAINTENANCE.......................................................................... SECTION 6
Daily Maintenance................................................................................... 6-1
Periodic Maintenance.............................................................................. 6-4
Transport and/or Storage ........................................................................ 6-5
Freeze Warning and Protection .............................................................. 6-5
ELECTRICAL DIAGRAMS ........................................................................... SECTION 7
ASSEMBLY DRAWINGS AND PARTS LISTS.............................................. SECTION 8
REPAIR AND REPLACEMENT .................................................................... SECTION 9
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

RX-20 / CMX-20 Owner’s Manual - iiRX-20 Owner’s Manual - ii
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. Clean into Area or Room...........................................................................5-2
Figure 6-1. Remove Nut/Inline Filter............................................................................6-1
Figure 6-2. Check Jet Spray for Even Flow.................................................................6-2
Figure 6-3. Loosen Cleaning Head Assembly .............................................................6-2
Figure 6-4. Location of Rotary Union...........................................................................6-2
Figure 6-5. Clean Off Debris from Gear Box Shaft......................................................6-3
Figure 6-6. Lubricate Vacuum Seal on Top of Hub......................................................6-3
Figure 6-7. Lubricate Shaft and Re-install Head Assembly.........................................6-3
Figure 6-8. Remove Retaining Clip with Screwdriver..................................................6-4
Figure 6-9. Tighten Setscrew.......................................................................................6-4
Figure 7-1. Wiring Diagram - 120 VAC / 60 Hz............................................................7-1
Figure 7-2. Wiring Diagram - 230 VAC / 50 Hz............................................................7-2
Figure 8-1. RX20 Final Assembly................................................................................8-2
Figure 8-2. Base and Drive Train Assembly (120 VAC / 60 Hz) - View 1 of 2 .............8-4
Figure 8-3. Base and Drive Train Assembly (120 VAC / 60 Hz) - View 2 of 2 .............8-5
Figure 8-4. Upper and Lower Handle Assembly (120 VAC / 60 Hz) - View 1 of 3.......8-7
Figure 8-5. Upper and Lower Handle Assembly (120 VAC / 60 Hz) - View 2 of 3.......8-8
Figure 8-6. Upper and Lower Handle Assembly (120 VAC / 60 Hz) - View 3 of 3.......8-9
Figure 8-7. Vacuum Head Assembly ......................................................................... 8-11
Figure 8-8. Valve Stem Assembly..............................................................................8-13
Figure 8-9. Solution Valve Assembly .........................................................................8-14
Figure 8-10. Vacuum Shoe and Skid Assembly ........................................................8-15
Figure 8-11. Edging Tool No Relief Assembly ..........................................................8-16
Figure 8-12. Cartridge Filter Assembly .....................................................................8-17

iii - RX-20 / CMX-20 Owner’s Manualiii - RX-20 Owner’s Manual
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. Reinstall Dog Point Set Screw ..................................................................9-5

RX-20 / CMX-20 Owner’s Manual - ivRX-20 Owner’s Manual - iv
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1-1: Owner’s Manual
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.
The RX20’s features will almost certainly
increase your productivity while decreasing
the fatigue factor that may have prevented
you from going after some of the larger
cleaning jobs that are available to carpet
cleaners and maintenance professionals
today.
Your new RX20 is a powerful Rotary
Jet Extractor that has been precision
engineered to bring you to the state-of-the-art in carpet, tile and grout cleaning. The
RX20’s weight distribution and rotary motion enable the operator to maneuver the unit
easily with less fatigue and without back strain.
The RX20’s electric motor drives its precision transmission which, in turn, rotates the
head, or star, assembly. Cleaning solution is injected through the center of the gear box
shaft directly to the three spray jets.
Soiled solution is then extracted from the carpet by ve
stainless steel cleaning heads and drawn through the
aluminum exhaust manifold to your cleaning system’s
recovery tank.
The RX20 is available in either the 120VAC / 60
Hz version or the 230VAC / 60Hz & 230VAC /
50Hz versions. Photos and illustrations throughout
this manual show only the RX20 120VAC / 60 Hz
version due to space limitations.

Owner’s Manual: 1-2
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
Monday-Friday [phone] Support Tech Support:
[e-mail]
7:00 a.m. to 5:00
p.m. [phone] Parts Parts Support: [e-mail]
Pacic Time
FAX
[phone] - Parts
[phone] - Support
When calling your distributor, be sure to reference the serial number and date of purchase.
FOR YOUR REFERENCE:
Serial No.____________________________________________________
Date of Purchase:_____________________________________________
Purchased From (Distributor): __________________________________

1-3: Owner’s Manual
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.

Owner’s Manual: 1-4
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