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HydraMaster RX-20 700-041-006, Owner'S Manual, Page: 48 / 52

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HydraMaster RX-20 700-041-006 Owner'S Manual Download Page 48

  

Repair and Replacement: 

 9-2

RX-20

HIgH PRESSURE VALVE ASSEMBLY 

In the event that the valve assembly needs to be replaced, follow this procedure:

Remove the 440 male quick connect with a wrench. 

1. 

Remove the five hex head screws in the back plate on the handle and lift the back 

2. 

plate off. 

3.  disconnect  the  stainless  steel  hose  from  the  bottom  of  the  valve  assembly  (see 

figure 9-2).

4.  Remove the bolt holding the trigger (see figure 9-2). 
5.  Remove the two bolts holding the valve assembly in the handle (see figure 9-2). 

The valve may now be rebuilt or replaced. 

6. 

If the valve has been frozen, inspect it for leakage before re-installing the back 
plate.

Figure 9-2.  

quick Connect, Back Plate and Stainless Steel Hose 

Removed from Upper Handle Assembly

See Step 3

See Step 4

High Pressure

 

Valve Assembly

See Step 5

Summary of Contents for RX-20 700-041-006

Page 1: ...11 182 006 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 Hy...

Page 2: ......

Page 3: ...ION 2 Configurations 2 2 Assembly Instructions SECTION 3 Operating Instructions SECTION 4 Preparation 4 1 Operation 4 2 Cleaning Information SECTION 5 Cleaning Patterns 5 1 Special Information 5 2 Cle...

Page 4: ...d Drive Train Assembly Parts List 8 8 Gear Box Assembly Parts List 8 9 Vacuum Head Original Style Assembly Parts List 8 13 Vacuum Shoe and Skid Original Style Assembly Parts List 8 14 RX 20 120 V Asse...

Page 5: ...euver Illustration to the Right Shows 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 Je...

Page 6: ...2 8 5 Figure 8 5 Handle Locking Linkage Assembly 8 7 Figure 8 6 Base and Drive Train Assembly 8 8 Figure 8 7 Gear Box 8 9 Figure 8 8 Vacuum Head Assembly 8 10 Figure 8 9 Vacuum Shoe and Skid Assembly...

Page 7: ...w RX 20 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 RX 20 s weight distribution and rotary motion e...

Page 8: ...75 Support Tech Support techsupport hydramaster com 7 00 a m to 5 00 p m 425 775 7276 Parts Parts Support parts hydramaster com Pacific Time FAX 425 771 7156 Parts 800 426 4225 Support When calling yo...

Page 9: ...es 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 reg...

Page 10: ...Introduction 1 4 RX 20...

Page 11: ...Drive 1 725 rpm Input 130 rpm Output Permanently Lubricated Helical Gear Drive Oil Capacity 12 oz 12 oz Star Head Plate Replaceable Spring Steel Arms Replaceable Spring Steel Arms Cleaning Heads Five...

Page 12: ...ning heads are all cast aluminum Other parts are either metal or high impact plastic The operating temperature and pressure of the cleaning solution as well as the vacuum power depend entirely on the...

Page 13: ...stem If you want this option Order this P N Pad and Bonnet Driver 190 041 020 Top Photo Figure 2 1 Hard Floor Attachment LD 190 041 024 Middle Photo Figure 2 1 Hard Floor Attachment MD 190 041 026 Mid...

Page 14: ...Machine Specifications 2 4 RX 20...

Page 15: ...shipping plug may be discarded Remove the protective wrapping material from the wheels 5 Attach the cleaning head or star assembly to the base of the RX 20 see 6 Figure 3 1 Lean the machine back and r...

Page 16: ...Assembly Instructions 3 2 RX 20...

Page 17: ...the operator s hip line For each person there is an ideal position which ensures the RX 20 does the work instead of the individual Solution and Vacuum Hose Connections Your RX 20 is equipped with a 44...

Page 18: ...jury or death may result For best results vacuum the carpet thoroughly prior to using the carpet cleaning system Operation Control Functions Control triggers are located on each side of the handle und...

Page 19: ...ze the solution trigger to control the high pressure 3 solution spray see Figure 4 2 Notice that the air flows constantly while the RX 20 is in operation Do not operate your RX 20 on dry carpets The f...

Page 20: ...or trigger and move the RX 20 slowly in a 3 to 5 ft arc as shown in Figure 4 4 After you have become familiar with the speed and movement of the machine practice making it hover in one spot The hoveri...

Page 21: ...giving it time to clean and extract A steady pace rather than a frenzied one will increase efficiency and production and decrease fatigue The following cautions should be observed while cleaning DO NO...

Page 22: ...d glued down carpets that may be delaminating with age the RX 20 may cause further delamination When in doubt DO NOT use your RX 20 on such carpets Cleaning Hints Most cleaners customarily clean their...

Page 23: ...wing daily and periodic maintenance steps must be followed Train yourself to maintain your unit on a regular schedule until it becomes habitual Daily Maintenance Disconnect the 1 RX 20 from the power...

Page 24: ...the head assembly 9 spin it off with your hands If the cleaning head is difficult to remove you may use a 3 4 socket wrench on the exposed center nut To prevent the gear box from turning insert a 5 8...

Page 25: ...f debris in the gear box if not removed may damage the gear box oil seal This will result in loss of oil in the gear box If the gear box is operated without oil severe damage may occur While rotating...

Page 26: ...use a toothpick as a dip stick The oil level should read 3 8 deep Locking Mechanism If the locking mechanism becomes loose and fails to hold the handle in position tighten it by following these simpl...

Page 27: ...and Protection Your RX 20 can suffer damage from freezing as can any equipment that functions with the use of water Care must be taken to protect this machine from freezing just as you do your other e...

Page 28: ...Machine Maintenance 6 6 RX 20...

Page 29: ...7 1 Electrical Diagrams RX 20 7 Electrical Diagrams Wiring Diagram 120 V 60 Hz Figure 7 1 6037...

Page 30: ...Electrical Diagrams 7 2 RX 20 Wiring Diagram 230 V 50 Hz Figure 7 2 4503 Rev A...

Page 31: ...n show the 120 V 60 Hz version only top level P N 700 041 006 due to space limitations See Table 8 1 for a list of top level part numbers and associated assemblies for the two configurations of RX 20...

Page 32: ...mbly Upper and Lower Handle 1 3 Assembly Base and Drive Train 1 4 000 174 057 Washer 3 8 Lock 3 5 000 143 096 Screw 3 8 16UNC X 1 00 Lg Hex Head 3 6 000 068 176 Hose 3 16 X 47 w Inserts 1 7 000 068 04...

Page 33: ...8 3 Assembly Drawings and Parts Lists RX 20 Upper and Lower Handle Figure 8 2 Assembly Overview 6391 Rev G 120 V Version Shown Here...

Page 34: ...3 31 9 50 43 22 36 44 38 37 30 47 21 23 2 17 27 33 4 25 35 39 3 8 45 35 48 28 11 35 49 5 26 24 29 34 HIDDEN HIDDEN HIDDEN HIDDEN 6 22 51 12 32 12 13 10 54 Upper and Lower Handle Figure 8 3 Assembly Pa...

Page 35: ...5 Assembly Drawings and Parts Lists RX 20 Upper and Lower Handle Figure 8 4 Assembly Parts View 2 of 2 6391 Rev G 120 V Version Shown Here 17 46 53 18 1 40 14 19 15 18 40 41 7 35 16 34 10 HIDDEN 52 2...

Page 36: ...5 Elbow 1 4 NPT Street 1 26 000 049 033 Filter In Line Y 1 27 000 157 151 Switch Chrome Momentary 1 28 000 157 042 Relay AC Relay 120 V 1 29 000 157 032 Switch Micro 1 30 000 108 012 Protector Power C...

Page 37: ...ly Figure 8 5 6390 Rev A Handle Locking Linkage Assembly Parts List Item Part Number Description Qty 1 000 107 097 Link 4 2 000 107 256 Plunger 2 3 000 094 030 07 Nut Adjusting Linkage Handle Locking...

Page 38: ...06 001 Plug 1 8 NPT 1 7 000 174 057 Washer 3 8 Lock 3 8 000 174 055 Washer Flr Tech Latch Pivot 3 9 000 143 096 Screw 3 8 16UNC X 1 00 Lg Hex Head 3 10 000 143 075 Screw 1 4 20UNC X 1 50 Lg Socket Hea...

Page 39: ...Gear Box 1 14 000 147 019 Seal Spur Gear Box 1 15 000 147 015 Seal Thread Shaft RX 20 1 16 000 143 157 Screw 10 24UNC X 1 00 Lg Flat Head 1 17 000 143 114 Screw 10 24UNC X 0 50 Lg Flat Head Phillips 5...

Page 40: ...6 078 20 5 WASHER 1 4 flAT S STEEl 000 174 003 19 5 NuT 1 4 20uNC HEX NylOCK S STEEl 000 094 009 18 2 plug 1 8 NpT bRASS 000 106 001 17 5 SCREW 5 16 18uNC x 0 75 lg HEX HEAd S STEEl 000 143 012 16 20...

Page 41: ...t 1 2 13UNC Hex 1 9 000 174 006 Washer 7 16 Flat 1 10 000 052 515 Nipple 1 8 NPT X 4 Lg 3 11 000 052 440 Coupler 1 8 FPT Brass 3 Item Part Number Description Qty Item Part Number Description Qty 12 00...

Page 42: ...kid Assembly Figure 8 9 6386 4 1 2 3 1 000 064 011 RX 20 Shoe 4 Vac Head Weldment 1 2 000 057 048 Gasket RX 20 Vacuum Head 1 3 000 107 245 RX 20 Skid 1 4 000 094 058 Nut 10 32UNF Nylock 2 Vacuum Shoe...

Page 43: ...Assembly Original Style 5 6 000 057 047 Gasket Felt 1 7 000 068 174 Hose 1 Vacuum Gray 5 8 000 094 019 Nut 1 2 13UNC Hex 1 9 000 174 006 Washer 7 16 Flat 1 10 000 052 080 Nipple 1 8 NPT x 4 Lg 5 11 0...

Page 44: ...Style Assembly Figure 8 11 6387 4 1 2 3 Vacuum Shoe and Skid Original Style Assembly Parts List 1 000 064 011 4 Vac Head Weldment 1 2 000 057 048 Gasket RX 20 Vacuum Head 1 3 000 107 095 Skid Wire RX...

Page 45: ...Raw 2 000 068 176 Hose 3 16 X 45 Teflon 1 000 068 193 Hose 2 Clear Vacuum 2 8 ft 000 091 015 Motor 1 2 HP TEFC H S 1 000 094 030 07 Nut Adjusting Linkage 1 000 094 036 Nut 1 2 NPT Pipe Plastic 1 000...

Page 46: ...000 061 119 Knob Push Button 1 000 068 176 Hose 3 16 X 45 Teflon 1 000 068 193 Hose 2 Clear Vacuum 2 8 ft 000 081 102 Label 230 V CE 1 000 091 016 Motor 1 2 HP TEFC 22 1 000 094 030 07 Nut Adjusting...

Page 47: ...2 carefully pry the seal up and lift it out If the seal appears worn or glazed so that it will not lubricate well turn it over see Figure 9 1 If that does not work or if it is damaged replace it with...

Page 48: ...the stainless steel hose from the bottom of the valve assembly see Figure 9 2 4 Remove the bolt holding the trigger see Figure 9 2 5 Remove the two bolts holding the valve assembly in the handle see F...

Page 49: ...d jets Remove jets and clear them of debris 2 2 Clogged water strainer Remove water strainer and clean 2 3 Kinked or clogged solution hose Remove hose Repair or replace 2 4 Cleaning hub not properly t...

Page 50: ...gearbox with oil No Power 6 0 Possible Cause Solution 6 1 RX 20 wiring or power source Have an electrician inspect unit for possible wiring or motor problems 6 2 Overload power source Locate an unused...

Page 51: ...ed provided the purchaser promptly notifies HydraMaster in writing of such alleged defect HydraMaster will pay all freight and transportation charges within the United States via normal ground shippin...

Page 52: ...nd buildup in the RX 20 will VOID all warranties on affected components All recommended maintenance must be performed by competent service personnel Records of periodic maintenance must be kept and co...

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