HydraMaster Titan 625 User manual

Titan 625
Owner’s Manual
HydraMaster
11015 47th Avenue West
Mukilteo, Washington 98275
MAN-47854 REV A. October 2021
(P/N: 000-182-306D)
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. © 2021 HydraMaster

i - Titan 625 Owner’s Manual
Table of Contents
GENERAL INFORMATION ........................................................................ SECTION 1
System Concept................................................................................................ 1-3
Contact Information........................................................................................... 1-4
Warnings, Cautions and Notices....................................................................... 1-5
Responsibilities ................................................................................................ 1-9
Machine Specications .................................................................................... 1-12
Spare Parts ...................................................................................................... 1-14
High Altitude Operation .................................................................................... 1-15
Local Water Precautions .................................................................................. 1-15
INSTALLATION INFORMATION................................................................ SECTION 2
Operating theTitan 625 in Hot Weather.............................................................. 2-2
Setting Up the Titan 625..................................................................................... 2-5
Orientation of Fuel Pump ................................................................................... 2-6
CLEANING AND CHEMICALS .................................................................. SECTION 3
Precautions ........................................................................................................ 3-1
Preparing the Carpet for Extraction.................................................................... 3-2
Rinse and Recover............................................................................................. 3-2
Overwetting........................................................................................................ 3-3
Streaking............................................................................................................ 3-3
Cleaning Tool Tips.............................................................................................. 3-4
OPERATING INSTRUCTIONS .................................................................. SECTION 4
Setting the Temperature..................................................................................... 4-3
Start Up Procedure .......................................................................................... 4-4
Setting the Pressure (for Optional High Pressure Washing Kit)........................ 4-5
Shut Down Procedure....................................................................................... 4-6
MACHINE MAINTENANCE ....................................................................... SECTION 5
Operational Maintenance................................................................................... 5-2
Overall Machine Maintenance............................................................................ 5-4
Engine Maintenance .......................................................................................... 5-5
High Pressure Pump Maintenance .................................................................... 5-7
Vacuum System Maintenance ......................................................................... 5-16
Descaling Procedure (Required)...................................................................... 5-17
Freeze Guarding .............................................................................................. 5-18
WATER AND CHEMICAL SYSTEM .......................................................... SECTION 6

Titan 625 Owner’s Manual - ii
ELECTRICAL SYSTEM.............................................................................. SECTION 7
Electrical System Information............................................................................. 7-1
SYSTEMS TROUBLESHOOTING ............................................................ SECTION 8
Heating System.................................................................................................. 8-2
Chemical System ............................................................................................... 8-3
Engine................................................................................................................ 8-4
High Pressure System ....................................................................................... 8-8
Vacuum System ............................................................................................... 8-10
ASSEMBLIES AND PARTS LISTS............................................................ SECTION 9
Titan 625 With 100 Gallon URTAssembly Parts List ...............................................9-4
Titan 625 With 70 Gallon URT Assembly Parts List ..........................................9-6
Console Assembly Parts List .................................................................................9-12
Blower Assembly Parts List ....................................................................................9-14
Blower Heat Exchanger Assembly Parts List .........................................................9-16
Engine Assembly Parts List ....................................................................................9-19
Exhaust Assembly Parts List ..................................................................................9-20
Flywheel Plate Assembly Parts List .......................................................................9-22
Frame Assembly Parts List ..................................................................... .........9-24
Lower Dash Assembly Parts List............................................................................9-27
By-Pass Valve Assembly Parts List........................................................................9-29
High Pressure Manifold Assembly Parts List.........................................................9-30
Di󰀨erential Check Valve Assembly Parts List .......................................................9-31
Orice Assembly Parts List...........................................................................9-32
Pump and Silencer Assembly Parts List ................................................................9-33
Pump Assembly Parts List .....................................................................................9-36
Side Cover Assembly Part List ..............................................................................9-38
Temperature Control Assembly Parts List.............................................................9-39
Top Cover Assembly Parts List ..............................................................................9-40
Upper Dash Assembly Parts List ...........................................................................9-42
Water Box Assembly Parts List ..............................................................................9-44
Di󰀨user Filter Assembly Parts List..........................................................................9-45
Chemical Jug Tray/Hose/Connection Package Assembly Parts List .....................9-46
Chemical Jug Tray Assembly Parts List .................................................................9-47
100 Gallon Universal Recovery Tank (URT) Assembly Parts List ..........................9-48
100 Gallon Universal Recovery Tank (URT) Cover Assembly Parts List ................9-51
70 Gallon Universal Recovery Tank (URT) Assembly Parts List ............................9-53
70 Gallon Universal Recovery Tank (URT) Cover Assembly Parts List .................9-55

iii - Titan 625 Owner’s Manual
Vacuum Relief Valve Assembly Parts List......................................................9-56
Vacuum Inlet Stopper Assembly Parts Lis .............................................................9-57
Sacricial Anode Kit Assembly Parts List ..............................................................9-58
AWDS Universal Kit Assembly Parts List ..............................................................9-60
High Pressure Washing Kit Assembly Parts List ...................................................9-62
High Pressure Washing Kit Lower Left Dash Assembly Parts List .......................9-63
Titan 625 Hose Routings...................................................................................9-64
HOW TO ORDER PARTS .......................................................................... SECTION 10
Warranty Parts Orders ..................................................................................... 10-1
Parts Orders..................................................................................................... 10-1
Emergencies .................................................................................................... 10-1
WARRANTY INFORMATION..................................................................... SECTION 11
Blower ..............................................................................................................11-1
High Pressure Water Pump .............................................................................11-1
Recovery Tank .................................................................................................11-1
Chemical System ..............................................................................................11-1
Control Panel ...................................................................................................11-1
Vacuum and Solution Hoses ............................................................................11-2
Cleaning Wand and Tool ...................................................................................11-2
Water Heating System ......................................................................................11-2
Hard Water Deposits.........................................................................................11-2
Warranty Procedure ..........................................................................................11-2
ACCESSORIES AND CHEMICAL SOLUTIONS ...................................... SECTION 12

Titan 625 Owner’s Manual - iv
List of Figures
Figure 1-1. Hard Water Map of Mainland United States ............................................1-16
Figure 2-1. Location of Roof Vents in Vehicle ..............................................................2-1
Figure 2-2. Recommended Location of Titan 625 in Van .............................................2-3
Figure 2-3. Install Fuel Pump, Outlet Side Up..............................................................2-6
Figure 2-4. Fuel Pump Must Be in Vertical Position.....................................................2-6
Figure 4-1. Titan 625 Upper Dash Assembly ...............................................................4-1
Figure 4-2. Titan 625 Lower Dash Assembly ...............................................................4-2
Figure 4-3. Temperature Control Dial...........................................................................4-3
Figure 4-4. High Pressure Control Panel .....................................................................4-5
Figure 4-4. Location of Chemical System Switches.....................................................4-6
Figure 4-5. Location of Blower Lube Port.....................................................................4-7
Figure 5-1. Remove Valve Cap and Valve Assembly...................................................5-8
Figure 5-2. Inspect Manifold and Old Valves ...............................................................5-8
Figure 5-3. Replace Center Inlet Check Valve With Modied Check Valve .................5-9
Figure 5-4. Apply Grease and Install Valves ............................................................... 5-9
Figure 5-5. Replace Valve Cap and Torque to 95 ft. lbs. .............................................5-9
Figure 5-6. Separate Manifold from Crankcase ........................................................ 5-10
Figure 5-7. Seal Assemblies May Come O󰀨 with Manifold ........................................5-10
Figure 5-8. Examine Ceramic Plungers .................................................................... 5-10
Figure 5-9. Remove Stainless Steel Plunger Bolt and Ceramic Plunger .................. 5-11
Figure 5-10. Install O-ring, Apply Sealant and Slide Plunger over Plunger Guide ..... 5-11
Figure 5-11. Extract Retainers and Seals ................................................................. 5-12
Figure 5-12. Seal Kit and Insertion Tool for Seal Installation .................................... 5-13
Figure 5-13. Install Seal Assembly Using O-Ring Grease ........................................ 5-13
Figure 5-14. Install Retainers into Cavities ................................................................5-14
Figure 5-15. Press Low Pressure Seal Assembly into Cavity ....................................5-14
Figure 5-16. Re-install Manifold and Torque Fasteners ............................................ 5-15
Figure 5-17. Torque Sequence in “X” Pattern ........................................................... 5-15
Figure 5-18. Torque Bolts to 22 ft. lbs ........................................................................5-15
Figure 5-19. Recirculation Fitting ...............................................................................5-17
Figure 6-1. Water, Chemical and Solution Flow Diagram ...........................................6-3
Figure 6-2. Chemical Flow Diagram ............................................................................6-4
Figure 6-3. Exhaust Flow Diagram...............................................................................6-5

v - Titan 625 Owner’s Manual
Figure 7-1. Electrical Schematic ..................................................................................7-2
Figure 7-2. Wiring Diagram - View 1 of 2 .....................................................................7-3
Figure 7-3. Wiring Diagram - View 2 of 2 .....................................................................7-4
Figure 9-1. Adhesive/ Material Reference....................................................................9-2
Figure 9-2. Titan 625 with 100 gallon URT...................................................................9-3
Figure 9-3. Titan 625 with 70 gallon URT.....................................................................9-5
Figure 9-4. Console Assembly - View 1 of 5 ................................................................9-7
Figure 9-5. Console Assembly - View 2 of 5 ................................................................9-8
Figure 9-6. Console Assembly - View 3 of 5 ................................................................9-9
Figure 9-7. Console Assembly - View 4 of 5 ..............................................................9-10
Figure 9-8. Console Assembly - View 5 of 5 .............................................................. 9-11
Figure 9-9. Blower Assembly ....................................................................................9-13
Figure 9-10. Blower Heat Exchanger Assembly.........................................................9-15
Figure 9-11. Engine Assembly - View 1 of 2...............................................................9-17
Figure 9-12. Engine Assembly - View 2 of 2 ..............................................................9-18
Figure 9-13. Exhaust Assembly .................................................................................9-20
Figure 9-14. Flywheel Plate Assembly .......................................................................9-21
Figure 9-15. Frame Assembly ....................................................................................9-23
Figure 9-16. Lower Dash Assembly - View 1 of 2 ......................................................9-25
Figure 9-17. Lower Dash Assembly - View 2 of 2 ......................................................9-26
Figure 9-18. By-Pass Valve Assembly - View 1 of 2 ..................................................9-28
Figure 9-19. By-Pass Valve Assembly - View 2 of 2 ..................................................9-29
Figure 9-20. High Pressure Manifold Assembly .........................................................9-30
Figure 9-21. Di󰀨erential Check Valve Assembly ........................................................9-31
Figure 9-22. Orice Assembly ....................................................................................9-32
Figure 9-23. Pump and Silencer Assembly ................................................................9-33
Figure 9-24. Pump Assembly - View 1 of 2 ................................................................9-34
Figure 9-25. Pump Assembly - View 2 of 2 ................................................................9-35
Figure 9-26. Side Cover - Console Assembly ............................................................9-37
Figure 9-27. Temperature Control Assembly..............................................................9-39
Figure 9-28. Top Cover Assembly ..............................................................................9-40
Figure 9-29. Upper Dash Assembly ...........................................................................9-41
Figure 9-30. Water Box Assembly..............................................................................9-43
Figure 9-31. Di󰀨user Filter Assembly .........................................................................9-45
Figure 9-32. Chemical Jug Tray/Hose/Connection Package Assembly .....................9-46
Figure 9-33. Chemical Jug Tray Assembly.................................................................9-47
Figure 9-34. 100 Gallon Universal Recovery Tank (URT) Assembly..........................9-48
Figure 9-35. 100 Gallon Universal Recovery Tank (URT) Cover Assembly...............9-50
Figure 9-36. 70 Gallon Universal Recovery Tank(URT) Assembly.............................9-52
Figure 9-37. 70 Gallon Universal Recovery Tank (URT) Cover Assembly.................9-54
Figure 9-38. Vacuum Relief Valve Assembly..............................................................9-56
Figure 9-39. Vacuum Inlet Stopper Assembly ............................................................9-57

Titan 625 Owner’s Manual - vi
Figure 9-40. Sacricial Anode Assembly....................................................................9-58
Figure 9-41. AWDS Universal Kit Assembly...............................................................9-59
Figure 9-42. High Pressure Washing Kit - Pump Assembly .......................................9-61
Figure 9-43. High Pressure Washing Kit - Lower Left Dash Assembly ......................9-63

1-1: General Information
The simple but powerful Titan™ 625 is a carefully engineered truckmount carpet cleaning
machine designed and manufactured by HydraMaster. A Kohler 38 HP EFI Engine powers
the 625’s Gardner Denver TF408 vacuum blower and the high pressure water pump,
which is rated at 4 gpm.
1- General Information

General Information: 1-2
Other features of the Titan 625 are:
• Dual oil bath and sight glasses for enhanced blower reliability
• 0 - 1,200 psi heated for carpet and tile cleaning
• Optional 2,000 psi pressure washing kit
• Dual tool/wand capable
• A.D.C temperature control with instant heat up to 250 Degrees F
• Optional Automatic Wastewater Disposal System (AWDS)
• Optional 85 gallon Fresh Water Tank Mounting Kit
The Titan 625 can be mounted onto a HydraMaster 85 gallon Rotomolded Fresh Water
Tank. You can also select either the HydraMaster 70 gallon recovery tank, which comes
in the standard equipment package, or a 100 gallon recovery tank, o󰀨ered as an option.
This Owner’s Manual contains installation and operation instructions as well as information
required for proper maintenance, adjustment and repair of the Titan 625. Component
troubleshooting guides have also been included for your convenience.
It is the purpose of this manual to help you properly understand, maintain and service
your Titan 625. Follow the directions carefully and you will be rewarded with years of
protable, trouble-free operation.
It is imperative that no section of this manual be overlooked when preparing for operation
of the Titan 625. Please read the manual to familiarize yourself with the operation of your
Titan 625, paying special attention to all Warnings and Cautions.
This section of the manual contains the following information:
System Concept
Contact Information
Warnings, Cautions and Notices
Responsibilities
Machine Specications
Spare Parts
High Altitude Operation
Local Water Precautions
Photographs and illustrations included in this document can represent optional
equipment as well as standard equipment.

1-3: General Information
Water Box
Water Pump
Heat Exchanger
Engine
Blower
SYSTEM CONCEPT
This is how the Titan 625 works:
1. Incoming water enters the water box and is pressurized by the high pressure
water pump. The water is heated by the engine exhaust in the blower exhaust heat
exchanger.
2. Cleaning solution is then injected into the pressurized water stream and the heated
solution is delivered to the cleaning tool.
3. The solution is recovered by the vacuum generated by the vacuum pump and is

General Information: 1-4
CONTACT INFORMATION
If you have any questions regarding the operation, maintenance or repair of this machine,
please contact your local distributor.
To nd a local distributor, please visit our website at
https://hydramaster.com/dealer-locator/
If your question cannot be resolved by your distributor or by the information within this
manual, you may contact HydraMaster direct using the following phone numbers.
HOURS TELEPHONE NUMBERS E-MAIL ADDRESSES
Monday-Friday
7:00 a.m. to 5:00 p.m.
Pacic Time
Technical Support
[phone]
FAX : [phone]
Technical Support
[e-mail]
Customer Service/Parts
[phone]
FAX : [phone]
Customer Service/Parts
[e-mail]
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): ____________________________________

1-5: General Information
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.

General Information: 1-6
Warnings and Cautions specic to the Titan 625 include the following:
During the operation of the truckmount many components are in motion. Never
touch any part of the truckmount that is in motion. Serious injury may result.
During the operation of the truckmount many surfaces will become extremely hot.
Never touch hot surfaces. Serious injury may result.
The operation of this truckmount can produce noise levels exceeding 85 decibels
to a distance of 10 ft. The Occupational Safety and Health Administration (OSHA)
recommends the use of hearing protective equipment if a person is exposed
to an average of 85 decibels over an 8-hour period. Check with local and state
agencies concerning hearing conservation rules.
During the operation of the truckmount carbon monoxide and other toxic fumes
are produced. Position the vehicle so that any fumes produced will be directed
away from inhabited areas and any points of building entry (doors, windows, air
conditioning units, fans, etc.). Do not occupy the vehicle while the truckmount is
in operation. Serious injury may result.
During the operation of the truckmount, chemicals known to the State of California
to cause cancer, birth defects and other reproductive harm are produced by the
engine exhaust.
Never operate the truckmount with a portable gas container inside the vehicle.
Doing so will increase the risk of re and explosion. Serious injury or death may
result.
Transporting a vented fuel container that presently contains, or has ever contained
in the past, a ammable liquid is strictly forbidden by HydraMaster and by federal
and state regulations. Doing so will increase the risk of re and explosion. Serious
injury or death may result.

1-7: General Information
Never smoke in or around the truckmount. Doing so will increase the risk of re
and explosion. Serious injury or death may result.
During the operation of the truckmount the exhaust system will become extremely
hot. Keep all ammable materials away from the truckmount exhaust system.
Failure to do so will increase the risk of re and explosion. Serious property
damage may result.
Never operate the truckmount when the vehicle is tilted more than 10 degrees
in any direction. Doing so will result in improper lubrication of the internal
components, and will increase the risk of serious component or engine damage.
Never perform cleaning operations when the truckmount engine is running at the
IDLE throttle position. Failure to do so will increase the risk of serious component
or engine damage.
Never operate the truckmount with the vehicle doors closed. Doing so results in
extremely high temperatures inside the vehicle and will lead to serious component
or engine damage.
Never use concentrated acids or solvents (including d-limonene) in the truckmount
water system or chemical system. Use of these products will cause serious
component damage.
Never operate the truckmount with a water hardness reading measuring 3.0
grains per gallon or higher. Using reading than 3.0 grains per gallon will cause
scale to build up inside the truckmount water system. Scale build up causes
serious component damage. Test all water prior to use and use water softening
equipment if necessary.

General Information: 1-8
Never allow water to freeze inside the truckmount. Serious component damage
will occur. Perform all freeze guarding procedures outlined in this digital Owner’s
Manual.
Many vehicles have critical components mounted directly below the oor that
can easily be damaged. Before drilling holes in the oor of the vehicle inspect
the underside of the vehicle for critical components. Failure to do so may result
in damage to the vehicle.
Use of the vacuum recovery system when stripping or otherwise removing wax
from oors is specically excluded as an approved use of the truckmount. Failure
to follow this exclusion may lead to component failure and will invalidate your
warranty.
Use of the vacuum recovery system for “dry cleaning”, without corresponding
solution application (i.e. duct cleaning), is specically excluded as an approved
use of the truckmount. Failure to follow this exclusion may lead to component
failure and will invalidate your warranty.
If concentrated acids or solvents are used to pre-treat surfaces before power
washing, do not recover them through the vacuum system. Failure to follow this
exclusion may lead to component failure and will invalidate your warranty.

1-9: General Information
RESPONSIBILITIES
Purchaser’s Responsibilities
• Prior to purchasing a van, ensure that the payload is suitable for all of the equipment
that will be installed and transported. This includes and is not limited to: the truckmount,
recovery tanks, fresh water tanks and any other on-board water, hose reels, hoses,
cleaning tools, chemicals and drying equipment. Payload capacity information is
available through the auto dealer, the manufacturer’s web site, and is also located on
the door pillar of the driver’s side door.
• Purchase a heavy duty Group 24 (550 CCA or better) battery for this truckmount. This
is normally available from the installation dealer.
• Prior to dropping your van o󰀨 at the distributor for the truckmount to be installed, have
a spray-on bed liner applied to the oor such as Rhino Lining® or Line-X®.
Plywood and carpet are not recommended.
• Prior to operating the truckmount, read this manual in its entirety and familiarize
yourself with the information contained here. Special attention should be paid to all
Warnings and Cautions.
• The distributor is responsible for the correct installation of the truckmount. The
distributor is also responsible to train you in the correct and proper operation and
maintenance of the truckmount.
Any modication of the truckmount may void the warranty.

General Information: 1-10
Distributor’s Responsibility
Acceptance of Shipment
Before accepting the truckmount, check the following:
1. The truckmount should be free from any damage during shipping. Do not sign the
delivery receipt until you have closely inspected the truckmount and noted any
damage on the delivery receipt. Hidden damage may be present even if the box
looks okay. It is recommended that the box be opened before you sign for the
shipment.
2. Check the packing list and verify that all items are accounted for.
Installation Responsibilities
• Ensure proper payload capacity. It is the distributor’s responsibility to verify that the
equipment package does not exceed the vehicle capacity.
• Ensure installation of a safe fuel tap system and through-oor ttings as provided by
HydraMaster.
• Ensure proper placement of the truckmount, recovery tank, fresh water tank, and
accessories in the vehicle, and check that they are secured with bolts and back up
plates. The distributor should verify that the owner is in agreement with the layout.
• Ensure proper connection of the fuel lines.
• Ensure proper connection and installation of the battery. Verify that the battery is in
accordance with HydraMaster’s recommendation.
• Check the pump, vacuum blower and engine oil levels prior to starting the truckmount.
• Start and run the truckmount and check that all systems function properly.
• Test all hoses, wands and other accessories for correct operation.
• Ensure timely return of the document package.

1-11: General Information
Training
The distributor should provide a thorough review of the operation manual with the
purchaser along with instruction and familiarization in:
1. How all the truckmount’s systems function.
2. All safety precautions and their importance.
3. How to correctly start and shut down the truckmount.
4. How to correctly clean with the truckmount.
5. Where and how often to check and change component oil levels.
6. Freezing damage and how to avoid it. This includes explaining proper freeze
guarding procedures.
7. How to do basic troubleshooting of the truckmount.
8. Hard water damage and how to avoid it. This includes how to determine if hard
water exists in your area and the installation and use of water softening systems.
9. The truckmount’s warranty and warranty procedures.

General Information: 1-12
MACHINE SPECIFICATIONS
Frame Dimensions 26.0" W x 45" D x 39" H
Weight 850 lbs
Engine - 38HP Kohler EFI Oil Type 5W-30 Synthetic*
Capacity 2.7 quarts when changing
oil and lter
Engine rpm High - 2700 rpm
Idle - 1,500 rpm
Fuel Consumption 1.6 gph
Ignition Switch
Vacuum Blower - GD
Triow 408
Max. Vac. 14” Hg
Oil Type Aeon PD
Gear End Capacity Approx. 2.0 oz.
Drive End Capacity Approx. 2.5 oz.
Blower rpm 3,300 rpm
Water Pump- General
Pump
Oil Type 15W-40
Capacity 14 oz.
Pump Rate 4.0 gpm
Pump rpm 1,700 rpm
Operating Pressure 0 - 1,200 psi (heated) 0 - 2,000 (no heat) **
Chemical System Last Step Chemical
Injection
* Oil weight varies between ambient temperature and operating conditions
** Pressure washing option