HYDRAMASTER CDS 4.8, CDS 4.6 User Manual

HYDRAMASTER

Corporation

1 1015 47th A venue W , Mukilteo, W A 98275

HYDRAMASTER© Corporation

Mukilteo, Washington

MAN-182-037-D

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 the HYDRAMASTER© Corporation. All rights reserved.

Revised September 06, 2007

Clutch Drive System

GENERAL INFORMATION ......................................................................... Section 1

Telephone Numbers........................................................................... 1-2

Precautions ....................................................................................... 1-3

System Operation ............................................................................. 1-7

Machine Specifications ..................................................................... 1-8

Spare Parts Recommendation .......................................................... 1-11

Spare Parts List ...................................................................... 1-11

Responsibilities................................................................................. 1-13

Local Water Precautions ................................................................... 1-15

Wastewater Disposal Advisory ............................................... 1-17

Map ........................................................................................ 1-19

CLEANING AND CHEMICALS .................................................................. Section 2

pH Chart ............................................................................................ 2-4

OPERATING INSTRUCTIONS ................................................................... Section 3

Start Up ............................................................................................. 3-2

Shut Down ......................................................................................... 3-3

FREEZE GUARD ........................................................................................ Section 4

Vacuum Freeze Guard Procedure ..................................................... 4-1

Freeze Protection of Pump-In System ................................................ 4-3

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WATER AND CHEMICAL SYSTEM .................................................................... Section 5

Water Flow Diagram............................................................................................ 5-3

Chemical System Troubleshooting ........................................................................ 5-5

HIGH PRESSURE PUMP ................................................................................... Section 6

Pump Maintenance .............................................................................................. 6-1

Service ............................................................................................................... 6-3

Cat Pump Assembly Drawing and Parts List ......................................................... 6-8

Pump Troubleshooting ....................................................................................... 6-11

CDS MACHINE ASSEMBLIES AND PARTS ......................................................Section 7

4.8 & 4.6 Assembly Drawings and Parts Lists ....................................................... 7-1

4.6 (Only) Assembly Drawings and Parts Lists .................................................... 7-37

Front End 2003+ GMC ...................................................................................... 7-52

CDS Belts ......................................................................................................... 7-66

Cleaning Wand Assembly Drawings and Parts Lists ............................................ 7-68

VACUUM SYSTEM ............................................................................................. Section 8

Lubrication Instructions ......................................................................................... 8-3

Blower Troubleshooting ........................................................................................ 8-5

Dominator Blower Instruction Booklet

ELECTRICAL SYSTEM ...................................................................................... Section 9

Wiring Schematic ................................................................................................ 9-2

Wiring Diagrams ................................................................................................. 9-5

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ELECTRICAL SYSTEM (cont.)

Electrical Troubleshooting .................................................................................... 9-9

MACHINE MAINTENANCE ............................................................................ Section 10

Operational Maintenance.................................................................................... 10-2

Daily, Weekly .................................................................................................... 10-2

Monthly ............................................................................................................. 10-3

Quarterly, Yearly ................................................................................................ 10-4

Descaling ......................................................................................................... 10-4

Overall Machine Maintenance ............................................................................ 10-5

Daily, Weekly .................................................................................................... 10-5

Long Term Maintenance Schedule ......................................................................... 10-7

Drive Shaft Maintenance ........................................................................................ 10-8

Troubleshooting ..................................................................................................... 10-9

Maintenance Logs

HOW TO ORDER PARTS............................................................................... Section 11

WARRANTY INFORMATION .......................................................................... Section 12

Golden Guarantee©

ACCESSORIES .............................................................................................. Section 13

PRODUCT UPDATES .................................................................................... Section 14

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List of Figur es

Fig 1-1 Location of Water Softener.............................................................. 1-16

Fig 1-2 Hard Water Map .............................................................................. 1-19

Fig 2-1 pH Chart .......................................................................................... 2-4

Fig 2-2 Cleaning S troke Procedure.............................................................. 2-4

Fig 5-1 Water Flow Diagram ....................................................................... 5-3

Fig 6-1 Servicing the Valves ........................................................................ 6-3

Fig 6-2 Servicing the Low Pressure and High Pressure Seals ...................6-5

Fig 6-3 Cat Pump ........................................................................................ 6-8

Machine Assemblies and Part s:

Fig 7-1 CDS 4.8 Machine Assembly - Front View .......................................7-1

Fig 7-2 CDS 4.8 Machine Assembly - Rear View........................................ 7-2

Fig 7-3 CDS 4.8 Recovery Tank Assembly - Rear View..............................7-4

Fig 7-4 CDS 4.8 Recovery Tank Assembly - Front View ............................. 7-5

Fig 7-5 CDS 4.6/4.8 Recovery Tank Cover Assembly................................. 7-8

Fig 7-6 CDS 4.6/4.8 Instrument Panel Assembly........................................ 7-9

Fig 7-7 CDS 4.6/4.8 Instrument Panel Assembly........................................ 7-10

Fig 7-8 CDS 4.6/4.8 Hi-PSI Manifold Assembly........................................... 7-13

Fig 7-9 CDS 4.6/4.8 By-Pass Valve Assembly ............................................ 7-15

Fig 7-10 CDS 4.6/4.8 Dual Heat Exchanger Assembly................................. 7-17

Fig 7-1 1 CDS 4.8 Pump and Blower Assembly.............................................7-19

Fig 7-12 CDS 4.6/4.8 Pump Assembly.......................................................... 7-23

Fig 7-13 CDS 4.6/4.8 Chemical Pump Assembly ......................................... 7-25

Fig 7-14 CDS 4.6/4.8 DuraFlow APO Pump Assembly.................................7-26

Fig 7-15 CDS 4.8 Dash Assembly ................................................................ 7-27

Fig 7-16 CDS 4.8 Dash Panel Assembly ...................................................... 7-29

Fig 7-17 CDS 4.8 Water Box Assembly ........................................................ 7-31

Fig 7-18 CDS 4.6/4.8 Diffuser Filter Assembly.............................................. 7-33

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Fig 7-18 CDS 4.6/4.8 Diffuser Filter Assembly.............................................. 7-33

Fig 7-19 CDS 4.8 Soap Jug Tray Assembly .................................................. 7-34

Fig 7-20 CDS 4.6/4.8 Vacuum Relief Valve Assembly .................................. 7-35

Fig 7-21 CDS 4.6/4.8 Salsa & Silencer Assembly ........................................ 7-36

Fig 7-22 CDS 4.6 Machine Assembly - Front View ....................................... 7-37

Fig 7-23 CDS 4.6 Machine Assembly - Back View ........................................ 7-38

Fig 7-24 CDS 4.6 Recovery Tank Assembly - Front View ............................. 7-40

Fig 7-25 CDS 4.6 Recovery Tank Assembly - Rear View .............................. 7-41

Fig 7-26 CDS 4.6 Pump & Blower Assembly ................................................ 7-44

Fig 7-27 CDS 4.6 Dash Box Assembly ......................................................... 7-48

Fig 7-28 CDS 4.6 Dash Panel Assembly ...................................................... 7-50

Fig 7-29 CDS 4.6/4.8 Front End 2003+ GMC Assembly ............................... 7-52

Fig 7-30 Horizontal Pump In Tank Assembly - Front ..................................... 7-54

Fig 7-31 Horizontal Pump In Tank Assembly - Rear ...................................... 7-55

Fig 7-32 Free Standing Tray Assembly .......................................................... 7-57

Fig 7-33 85 Gallon Rotomolded Fresh Water Tank Assembly - Front ........... 7-59

Fig 7-34 85 Gallon Rotomolded Fresh Water Tank Assembly - Rear ............ 7-60

Fig 7-35 85 Gallon Rotomolded Fresh Water Tank w/ Reel Assembly .......... 7-63

Fig 7-36 CDS Pass Through Assembly ........................................................ 7-64

Cleaning Wand Assembly and Parts:

Fig 7-37 Valve Assembly ............................................................................... 7-68

Fig 7-38 Solution Valve Assembly .................................................................. 7-69

Fig 7-39 Valve Stem Assembly ...................................................................... 7-70

Fig 7-40 Hydra Hoe Wand Assembly ............................................................. 7-71

Fig 9-1 Wiring Schematic, CDS 4.8 ............................................................ 9-2

Fig 9-2 Wiring Schematic, CDS 4.6 ............................................................ 9-3

Fig 9-3 Wiring Diagram, Sheet 2 CDS 4.8 .................................................. 9-5

Fig 9-4 Wiring Diagram, Sheet 3 CDS 4.8 .................................................. 9-6

Fig 9-5 Wiring Diagram, Sheet 2 CDS 4.6 .................................................. 9-7

Fig 9-6 Wiring Diagram, Sheet 3 CDS 4.6 .................................................. 9-8

Fig 10-1 Drive Shaft Assembly ...................................................................... 10-6

HydraMaster Corporation

Introduction

CDS 4.6/4.8

Section 1-1

his manual contains operating instructions as well as information required for

proper maintenance, adjustment and repair of this unit. Since the first and most important part of repair work is the correct diagnosis of the problem, component manual troubleshooting charts have been included for your convenience.

Unlike a garden tractor, lawn mower or cement mixer, all having one or two functions to perform, the truckmounted carpet cleaning plant has many functions to perform simultaneously.

• The engine has to run at a consistent RPM.

• The vacuum has to pull air and dirty water back from cleaning site.

• The water pump must provide a stable pressure at proper water flow for cleaning.

• The chemical has to be injected into the water stream at the right concentration.

• The heating system must provide a consistant water temperature.

• The vacuum tank must store dirty water until drained.

As you can see, it is not just a turn-key operation with one thing to worry about, Does it start?!

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♦ WARNING ♦

The manufacturer uses this symbol throughout the manual to warn of possible injury or death.

♦ CAUTION ♦

This symbol is used to warn of possible equipment damage.

♦ Notice ♦

If you have any questions regarding the operation, maintenance, or repair of this machine. Please contact your local distributor. If your question cannot be resolved by your distributor or by the information within this manual, you may contact HydraMaster Customer Service direct using the following phone numbers.

Hours Telephone Numbers

Monday - Friday (425) 775-7276 Parts 8:00 am to 5:00 pm (425) 775-7275 Service PACIFIC STANDARD TIME (800) 426-4225 Parts / Service FAX

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Precautions

♦ CAUTION ♦

THROUGH-FLOOR DRILLING: Be cautious when drilling holes through the van floor. Many vans have critical components mounted directly below the van floor that could be damaged by a misplaced drill bit. (See Product Support Bulletins 92102, 94062 and 94063 at the end of the manual.)

♦ CAUTION ♦

LEVEL OPERATION: During operation, van must be parked on level ground not to exceed + or - 10 degrees. Failure to insure proper leveling may prevent proper internal lubrication of engine, vacuum and/or high pressure components.

♦ WARNING ♦

MOVING PARTS: Never touch any part of the machine that is in motion. Severe bodily injury may result.

♦ CAUTION ♦

ACID RINSE AGENTS: The increased demand for “clear water” rinsing results in the need for special care when using these acid based chemicals in your equipment. The negative side of these products is the corrosive effects the acid can have on metals, including swivels, pumps, heat exchangers, etc.

HydraMaster’s ClearWater Rinse has been formulated to protect vital components. HydraMaster will not warranty parts that have been damaged from using unprotected acid products that have obviously caused failures.

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♦ CAUTION ♦

HARD WATER PROTECTION: Failure to take appropriate measures to prevent scale build up can result in system failure and loss of warranty on affected parts. Test the water in your immediate and surrounding areas with hard water test strips. Assume all water obtained from wells is hard. If you are operating in a Hard Water Area @

3.5 grains or more per gallon, use a water softening system.

♦ CAUTION ♦

FREEZE PROTECTION: There is often little warning before a cold spell. Therefore, not protecting this equipment from freezing will result in costly down-time. Placing an electric heater in the truck or parking the truck indoors will help to insure against freezing, but should not be the primary method of freeze protection.

♦ WARNING ♦

HOT SURFACES: During the operation of this equipment, many surfaces on the machine will become very hot. When near the van for any reason care must be taken not to touch any hot surface, such as heater, engine, exhaust, etc.

♦ WARNING ♦

HEARING PROTECTION: The Occupational Safety and Health Administration (OSHA) recommends the use of hearing protection when a technician is exposed to an aver- age of 85 decibels (this is an average of exposure over an 8 hour period). This equipment can produce 85 decibels to a distance of 10 feet. Please check with your local state agencies to see if OSHA standards apply to your application.

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♦ WARNING ♦

NO SMOKING: It is unsafe to smoke in or around the vehicle.

♦ WARNING ♦

CARBON MONOXIDE: This unit generates toxic fumes. Position the vehicle so that the fumes will be directed away from the job site. Do not park where exhaust fumes can enter a building through open doors, windows, air conditioning units or kitchen fans.

♦ WARNING ♦

TOXIC FUMES: Do not occupy the vehicle when the cleaning equipment is operating. Toxic fumes may accumulate inside a stationary vehicle.

♦ WARNING ♦

ENGINE EXHAUST: The engine exhaust from this product contains chemicals known to the State of California to cause cancer, birth defects or other reproductive harm.

♦ CAUTION ♦

The use of some chemicals through your mobile carpet cleaning plant can seriously damage the internal plumbing, high-pressure pump, chemical pump and heat exchangers. These harmful chemicals include concentrated acid (see the pH chart at the end of this section), solvents (including d-Limonene), and some paint, oil and grease removers with a high concentration of solvents.

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System Operation

he HydraVan CDS machines are highly engineered cleaning plants designed by

HydraMaster Corporation. The system utilizes the most current technology avail-

able in water heating and water recovery systems.

The water flow is as follows:

Water is fed into the machine under tap pressure to the water box. The water is then picked up from the water box by the high pressure pump and pumped under pressure through the heating system and then out to the cleaning tool.

After the water is applied to the carpet, it is recovered by the vacuum system and carried back to the recovery tank.

As there is no guess work in the manufacture of these highly advanced cleaning plants, there must be none in preparing it to get the job done in the field. It is the purpose of this manual to help you properly understand, maintain and service your cleaning plant. Follow the directions carefully and you will be rewarded with years of profitable, trouble-free operation.

It is imperative that no section be overlooked when preparing for operation of this equipment.

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Machine Specifications

Frame: 13"W x 68"L x 38"H

Weight: 575 lbs.

Construction: Tank: Marine Aluminum with Baked-on Epoxy Finish

Chassis: Painted Steel Cowling: Fiberglass

Power Transfer: Electric Clutch-driven shaft, Key Activated

Vacuum Blower: 4.6 - 45 Tuthill/M-D Tri-Lobe

4.8 - 47 Tuthill/M-D Tri-Lobe

Water Pump: CAT® 4.2 GPM Triple Plunger

4 gallons per minute

Chemical System: Mechanical, Meter Controlled

Heating System: Multiple Heat Exchanger (1000 PSI pressure)

Dual Shell and Tube Exchangers Optional Salsa Heat Package

Instruments:

Main Panel:

Electronic Tachometer, 0-3000 RPM* Water Temperature Gauge, 0-320° F Vacuum Gauge, 0-30 in Hg Hour Meter, Machine Run-Time Keyed Ignition, Start/Stop Electronic Circuit Protection Breaker, Re-settable Machine Status Indicator Lamps Chemical Flowmeter, 0-10 GPH Water Pressure Gauge, Liquid Filled, 0-1000 PSI

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Instruments (cont.) :

Side Panel:

Water Pressure Adjustment Blower Lubrication Port Water Temperature Adjustment Knob High Pressure Solution Outlets, QuickDisconnect 2 Fresh Water Inlet Fitting, Quick-Disconnect Water Box Drain Valve Chemical Controls

Recovery Tank: 100 gallon Aluminum

Cleaning Wand: Stainless Steel

Replacement Grip Rebuildable Solution Valve

High Pressure Hose:

1/4” High Temperature, Lined, Vinyl Covered Hose rated to 2200 PSI, 250° F

Standard Equipment:

150’ Solution Hose 150', 2" Vacuum Hose

5 gallon Chemical Jug Chemical Jug Holder Chemical Jug Fill Line

Power Transfer Package

Component Power Pack

Equipment Cowling with Armrests

Vacuum Recovery Tank

Control Console

Dual Wand Hook-up

HydraMaster Heat Exchanger System

Freeze Guard System

Wheel Chock Set

Carpet Wand

10'. 1 ½” Vacuum Hose

50', Fresh Water Hose

10', 1 ½” Drain Line

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Standard Equipment (cont.) :

Van Finish Package

Van Decal Package

Monogrammed Jacket

Operation Manual

Custom Equipment Color

Oversize Air Handling Package

475 CFM High-Output Vacuum System (4.8)

Expanded Vacuum Recovery Tank Capacity

Hushkit Silenced System (4.8)

*The 4.8 CDS tachometer with the mag pick up located on

the power pack has been calibrated to represent the

engine speed of the vehicle.

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Spare Parts

own-time on the unit can be very expensive, because your truck-mounted unit is

capable of generating several hundred dollars per day. In order to minimize such down-time, it is strongly recommended by the manufacturer that you purchase and keep in your truck the parts listed below.

Parts Orders

To expedite your parts needs, please call your sales representative. In most instances, he either stocks or has access to parts through a regional service center. If further assistance is needed, contact the factory and coordinate your needs. If this becomes necessary, always indicate the method of shipment you desire, i.e. UPS, Blue Label, Air Freight, Air Express, etc.

HydraMaster Parts Dept. Phone (425) 775-7276 HydraMaster Parts Dept. Toll Free Fax 1-800-426-4225

CDS Spare Parts List

PART NO DESCRIPTION QTY

049-023 Screen, Garden Hose 6 052-050 Quick Connect, 440 Male 2 052-051 Quick Connect, 440 Female 2 052-052 Quick Connect, 660 Male 1 052-053 Quick Connect, 660 Female 1 076-005 Spray Jet 8006E 1 078-019 Kit, Wand Valve Plunger 1

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CDS Spare Parts List (cont.)

PART NO DESCRIPTION QTY

078-102 Kit, Pressure By-pass Valve 1 078-270 Kit, Valve for 3CP Cat Pump 2 078-271 Kit, Seals for 3CP Cat Pump 1 157-022 Switch, Relay 1 157-040 Switch, 12 VDC Lighted 2 169-022 Valve, 1 ½” Full Port Ball 1

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Responsibilities

rior to the arrival of the unit, the van that it will be installed in should be delivered

to the installer.

Purchaser’s Responsibility:

It is the purchaser’s responsibility to Read the Owner’s Manual and to familiarize yourself with the information contained therein. Special attention should be paid to

all Cautions and Warnings.

Sales Representative’s Responsibility:

Acceptance of Shipment

1. If the unit shows any outward signs of damage, do not sign the delivery receipt until you have closely inspected the unit and noted any damage on the delivery receipt.

2. The salesman from whom you purchased your unit is responsible for supervising the correct installation of the unit in your vehicle and thoroughly training you in its operation, maintenance and precautions.

Installation

• Correctly installing the unit and recovery tank in your vehicle and securing them with bolts and tie down washers.

• Checking the pump, vacuum blower and engine oil levels prior to starting the unit.

• Starting the unit to check the drive system and see that all other systems function normally.

• Checking all hoses, wands, etc. for correct operation.

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Training

• A thorough review of the operation manual with the purchaser.

• Instruction and familiarization in:

- how to correctly start up and shut down the unit,

- how to correctly clean with the unit,

- where and how often to check and change component oil levels,

- how the unit’s systems work, how to troubleshoot the unit,

- how to do basic repairs, safety precautions and their importance,

- freezing damage and how to avoid it,

- hard water damage and how to avoid it.

• A thorough review of the unit warranty and warranty procedures.

• A thorough review of hard water precautions and warnings.

• How to determine hard water areas.

• Use of water softening systems.

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Local Water Precautions

he quality of water varies greatly. Many areas have an excess of minerals in the

water which results in what is commonly called “hard water.” These minerals tend to adhere to the insides of heater coils and other parts of the machines causing damage and a loss of cleaning effectiveness. This influences the reliability and efficiency of equipment in direct proportion to the level of hardness.

HARD WATER ADVISORY

HydraMaster recognizes that any hard water deposits which might occur within the water system of our truckmounts is a serious problem. The precision technology of truckmount heat exchanger systems is intolerant of any foreign material. Hard water deposits will ultimately decrease the performance of the system and are expected to seriously lower the reliability of the machine.

To validate a machine’s warranty, HydraMaster requires that all machines operating in designated “Hard Water Areas” (3.5 grains or more per gallon) be fitted with a water softening system or a properly installed magnetic-type de-scaler must be used and maintained. Periodic de-scaling or acid-rinsing alone is not adequate in these areas. HydraMaster does not recommend any particular type or brand, however the relative effectiveness of some types of magnetic de-scalers or softeners may require additional periodic use of de-scaling agents.

HydraMaster also recommends, in the strongest possible terms, that machines in all areas be fitted with a water softening system for improved operation and reliability.

HydraMaster has included five hard water test strips with your machine. These can be used to test the water in your immediate and surrounding areas as they can vary greatly. Assume all water obtained from wells is hard.

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♦ CAUTION ♦

Failure to take appropriate measures to prevent scale build up can result in system failure and loss of warranty on affected parts.

HARD WATER AREA MAP

The following map defines areas in the United States which compromise fluid related components such as hoses, fittings, heaters, pumps, valves and water cooled engines. For other countries, hard water area maps can be obtained from geological societies.

WATER SOFTENER

Cleaning efficiency and equipment life is increased, chemical use decreased, and the appearance of cleaned carpets enhanced when water softeners are incorporated in hard water areas. The manufacturer strongly urges the use of water softener units in areas exceeding 3 grains per gallon. Failure to use a water softener in these areas will invalidate the machine’s warranty. Using a hard water area map as a reference, determine the quality of water in your area and take action immediately, if necessary.

Reports from several of our machine users commending the results of the use of water softeners in conjunction with their machines prompts us to recommend the procedure to everyone in a “hard water” area.

The relatively low cost of a water softener service is more than made up for by an increased life of machine parts, reduced chemical costs and continued cleaning efficiency. The water softener

Figure 1-1 Location of Water Softener

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will also increase the effectiveness of the cleaning chemicals, therefore less chemical will be needed.

Contact a water softener distributor in your area for information on the rental of a simple water treatment unit to carry in your truck. Be sure to change the water softener in accordance with the capability of the softener.

For example: If the softener will treat 900 gallons of water and the machine uses an average of 30 gallons per hour, for an average of 5 hours a day, this equals 150 gallons per day. In 6 days the machine would use 900 gallons of water. Therefore, the softener would need to be changed every 6 working days for maximum softening.

WASTE WATER DISPOSAL ADVISORY

There are laws in most communities prohibiting the dumping of recovered “gray” water from carpet cleaning in any place but a sanitary treatment system.

This cleaning rinse water, recovered into your unit’s vacuum tank, contains materials such as detergents. These must be processed before being safe for streams, rivers and reservoirs.

IN ACCORDANCE WITH THE EPA, STATE AND LOCAL LAWS, DO NOT DISPOSE OF WASTE WATER INTO GUTTERS, STORM DRAINS, STREAMS, RESERVOIRS, ETC.

In most cases, an acceptable method of waste water disposal is to discharge into a municipal sewage treatment system after first filtering out solid material such as carpet fiber. Access to the sanitary system can be obtained through a toilet, laundry drain, RV dump, etc. Permission should first be obtained from any concerned party or agency.

One disposal method which usually complies with the law is to accumulate the waste water and haul it to an appropriate dump site. Another solution to the disposal problem is to equip yourself with an Automatic Pump-Out System. These systems are designed to remove waste water from the extractor’s recovery system and actively pump the water through hoses to a suitable disposal drain.

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Properly designed, they will continuously monitor the level of waste water and pump it out simultaneously to the cleaning operation. The hidden benefit of this process is that the technician does not have to stop his cleaning to empty the recovery tank. HydraMaster makes an A.P.O. System available which can be ordered with new equipment or installed later.

The penalties for non-compliance can be serious. Always check local laws and regulations to be sure you are in compliance.

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Figure 1-2 Hard Water Map

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Cleaning and Chemicals

CDS 4.6/4.8

Section 2-1

our mobile carpet cleaning plant has been engineered using the latest and most sophisticated technology available to produce the finest carpet cleaning results

possible. Despite this, however, it remains only a tool of the carpet cleaning trade, and it can produce only as good a job as the person operating it.

♦ CAUTION ♦

PRECAUTIONS

There are no short cuts to good carpet cleaning. It requires time, cleaning knowledge and the use of good chemicals. Therefore, the manufacturer recommends the use of spotting agents and traffic lane cleaners, as required, prior to the actual cleaning of carpeting.

The use of some chemicals through your mobile carpet cleaning plant can seriously damage the internal plumbing, high pressure pump and heater. These harmful chemicals include concentrated acid (see the pH chart at the end of this section), solvents, and some paint, oil, and grease removers with a high concentration of solvents.

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The manufacturer recommends only the use of chemicals containing rust and corrosion inhibitors and water softening agents to prevent chemical build-up which may lead to component failure and warranty invalidation.

♦ CAUTION ♦

The increased demand for “clear water” rinsing results in the need for special care when using these acid based chemicals in your equipment. The negative side of these products is the corrosive effects the acid can have on metals, including swivels, pumps, heat exchangers, etc.

The use of detergents and chemicals which create foam when agitated should be avoided. Foam passing through the blower could lead to serious problems. HydraMaster and SafeClean chemicals are formulated with built in anti-foaming agents. When cleaning surfaces with excessive foaming residue use HydraMaster Powder Defoam as directed.

CLEANING STROKE PROCEDURE

Purpose: To eliminate excess moisture remaining in the carpet fiber and the sawtooth appearance which results from diagonal movement of the cleaning tool on all types of carpet.

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Procedure: Always move the cleaning tool in smooth, forward and backward strokes. Apply slight pressure to the forward stroke while the solution is injected into the carpet. When extracting (drying), apply firm pressure on the forward stroke to ensure a positive “lock” for the vacuum and minimize the “hopping” effect resulting on carpet that is not smooth. During the forward and reverse strokes, movement to the right or left should only be accomplished at the extreme rear of the stroke. Overlapping is also important to ensure even application of solution and prevent saturation when cleaning wand is stopped twice at the same point at the rear of the cleaning stroke. This is illustrated at the end of this section.

Failure to adopt this procedure can result in increased chance of “clean streaks,” fiber shrinkage, brown-out and longer drying periods.

OVER-WETTING

Over-wetting is annoying to all concerned, and sometimes leaves a bad impression of the cleaning process used.

These are Several Areas That Will Cause Over-wetting

1. Too few vacuum strokes or improper saw-tooth vacuum strokes as shown in the following illustration.

2. Obstructed, cut or kinked hoses.

3. Vacuum tank drain valve left partially open.

4. Clogged vacuum blower filter or vacuum tank lid not sealing properly.

5. Cleaning a heavily foam-saturated carpet without defoamer.

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Operating Instructions

CDS 4.6/4.8 Section 3-1

BEFORE OPERATING THE UNIT

1. Operate the unit and equipment only in a well ventilated area.

♦ CAUTION ♦

Exhaust fumes contain carbon monoxide and may be hazardous to your health. Do not operate this truck where the exhaust may enter any building doorway, window, vent, or opening of any kind.

2. Check the fuel tank to be certain there is adequate fuel to complete the

job.

3. Position the wheel chocks on one of the front tires.

4. If using a water supply hose which has not been used recently or if using a

customer’s hose, first connect the hose to the faucet and flush out any debris which may be in the hose. Afterwards connect the hose to the unit.

5. Check your chemical jug to see if you have enough concentrated chemical

to finish the job. If not, mix and fill a five gallon chemical jug.

6. Connect all required hoses.

7. When connecting the pressure hose to the pressure outlet connections at

the front of the unit, go to the farthest area to be cleaned and connect to the cleaning tool. This insures that you have the proper length of hose required to perform the cleaning.

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START UP

1. Make sure the van gear select lever is in the Park position and the emergency brake is set.

2. Start the van engine.

3. Turn key on CDS Dash. The RPM will automatically increase to the proper running speed. Engine RPM should be as noted in the Maintenance Section.

Note: The 4.8 CDS with the tachometer mag pick up located on the power pack has been calibrated to represent the engine speed of the vehicle.

4. Turn on the Pump clutch switch

5. Turn on the Pump in switch

6. Turn the heat control valve to “Max” only if you will be using water. Do not

activate the heat exchanger during flood extration work.

7. Turn the chemical selector valve to the “PRIME” position to purge any air from the system. Note: The prime hose is plumbed into the recovery tank. Leaving the valve in the “PRIME” position will cause excessive chemical usage.

a. When the chemical begins to flow through the flowmeter, with the flow indicator reading maximum flow and the PRIME line pulsing, turn the chemical selector valve to “ON”. Cap off vacuum if necessary.

b. While spraying the solution from the cleaning tool, adjust the chemical flow by turning the chemical adjustment knob to the desired level.

8. Turn the APO switch ‘ON’ if using the auto pump-out feature. NOTE: The pump will not engage until the water level rises inside the waste tank.

9. Now proceed with the cleaning operation.

1/20/03

HydraMaster Corporation

+ 169 hidden pages

HYDRAMASTER CDS 4.8, CDS 4.6 User Manual

Table of Contents

List of Figur es

Introduction

Cleaning and Chemicals

Operating Instructions