HydraMaster Chem-Dry PowerHead User manual

Chem-Dry®PowerHead
®
Owner’s Manual
Manufactured Exclusively for
Model 700-041-012
MAN-33169 Rev. D, October 9, 2014
(P/N 000-182-067)
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 Harris Research Inc. Specications and information in this document
are subject to change without prior notice. All rights reserved. © 2014 Harris Research Inc.

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Harris Research, Inc. i - Chem-Dry PowerHead Owner’s Manual
Chem-Dry®PowerHead®
Table of Contents
GENERAL INFORMATION.......................................................................... SECTION 1
Construction............................................................................................1-1
Contact Information................................................................................. 1-2
Warnings, Cautions and Notices.............................................................1-3
MACHINE SPECIFICATIONS...................................................................... SECTION 2
ASSEMBLY INSTRUCTIONS...................................................................... SECTION 3
OPERATING INSTRUCTIONS .................................................................... SECTION 4
Preparation..............................................................................................4-1
Control Functions....................................................................................4-2
Maneuvering the PowerHead..................................................................4-2
Edging Tool .............................................................................................4-3
CLEANING INFORMATION......................................................................... SECTION 5
Cleaning Patterns....................................................................................5-1
Special Information .................................................................................5-2
Cleaning Hints......................................................................................... 5-3
MACHINE MAINTENANCE......................................................................... SECTION 6
Daily Maintenance...................................................................................6-1
Periodic Maintenance..............................................................................6-3
Transport and/or Storage........................................................................ 6-4
Freeze Warning and Protection ..............................................................6-4
ELECTRICAL DIAGRAMS.......................................................................... SECTION 7
ASSEMBLIES AND PARTS LISTS ............................................................. SECTION 8
PowerHead Final Assembly Parts List....................................................8-3
Base and Drive Train Assembly Parts List.............................................. 8-6
Upper and Lower Handle Assembly Parts List........................................ 8-10
Vacuum Head Assembly Parts List......................................................... 8-12
Handle Locking Linkage Assembly Parts List ......................................... 8-13
Valve Stem Assembly Parts List.............................................................. 8-14
Solution Valve Assembly Parts List......................................................... 8-15
Vacuum Shoe and Skid Assembly Parts List .......................................... 8-16

Chem-Dry PowerHead Owner’s Manual - ii Harris Research, Inc.
Chem-Dry®PowerHead®
REPAIR ................................................................................................ SECTION 9
Felt Vacuum Seal ...................................................................................9-1
High Pressure Valve Assembly............................................................... 9-2
TROUBLESHOOTING................................................................................. SECTION 10
LIMITED WARRANTY PLAN....................................................................... SECTION 11

Harris Research, Inc. iii - Chem-Dry PowerHead Owner’s Manual
Chem-Dry®PowerHead®
List of Figures
Figure 3-1. Base with Cover.......................................................................................3-1
Figure 3-2. Base without Cover...................................................................................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 Use of the Machine....................................................................4-3
Figure 5-1. Recommended Cleaning Patterns............................................................5-1
Figure 5-2. Clean into an Area or Room......................................................................5-3
Figure 6-1. Check Jet Spray for Evenness..................................................................6-1
Figure 6-2. Remove Cleaning Head............................................................................6-1
Figure 6-3. Remove Debris .........................................................................................6-2
Figure 6-4. Lubricate Felt Vacuum Seal......................................................................6-2
Figure 6-5. Lubricate the Shaft....................................................................................6-2
Figure 6-6. Remove Retaining Clip with Screwdriver.................................................6-4
Figure 6-7. Tighten Setscrew.......................................................................................6-4
Figure 7-1. Wiring Diagram - 120 V, 60 Hz..................................................................7-1
Figure 8-1. PowerHead Final Assembly......................................................................8-2
Figure 8-2. Base and Drive Train Assembly - View 1 of 2...........................................8-4
Figure 8-3. Base and Drive Train Assembly - View 2 of 2...........................................8-5
Figure 8-4. Upper and Lower Handle Assembly - View 1 of 3....................................8-7
Figure 8-5. Upper and Lower Handle Assembly - View 2 of 3.....................................8-8
Figure 8-6. Upper and Lower Handle Assembly - View 3 of 3.....................................8-9
Figure 8-7. Vacuum Head Assembly.........................................................................8-11
Figure 8-8. Handle Locking Linkage......................................................................... 8-13
Figure 8-9. Valve Stem Assembly............................................................................. 8-14
Figure 8-10. Solution Valve Assembly...................................................................... 8-15
Figure 8-11. Vacuum Shoe and Skid Assembly........................................................ 8-16
Figure 9-1. Carefully Pry Seal Up and Lift Out...........................................................9-1
Figure 9-2. Use Can to Hold Oil for Seal.....................................................................9-1
Figure 9-3. Valve Assembly Parts................................................................................9-2

Chem-Dry PowerHead Owner’s Manual - iv Harris Research, Inc.
Chem-Dry®PowerHead®
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1-1: General Information
Harris Research, Inc.
Chem-Dry®PowerHead®
1 - General Information
CONGRATULATIONS,
Younowownapieceofequipmentthatincorporatesthelatestincarpetcleaningtechnology.
The Chem-Dry PowerHead®’s features will almost certainly increase the productivity of
you and your business, while decreasing the fatigue factor that may have prevented you
from going after some of the large cleaning jobs that are available to carpet cleaners and
maintenance professionals today. With competition as strong as it is in most communities,
you have invested in not only a cleaning tool, but a marketing tool that will enhance your
professional image in every way.
The Chem-Dry PowerHead is REVOLUTIONARY. Your foresight in purchasing this
ultimate “cleaning machine” will be rewarded with the knowledge that you care enough to
give your customer the maximum cleaning effectiveness.
Using the PowerHead in your business will turn you into a professional carpet cleaning
operator, rather than a professional laborer.
Once again, congratulations to another Chem-Dry cleaning professional who will not wait
for tomorrow, and who will not have to compete against the PowerHead. The competition
will have to compete with you!
AN EVOLUTION THAT HAD TO HAPPEN
Your new PowerHead has been precision engineered to bring you to the state-of-the-
art in carpet cleaning. In the past, a wand technician had to supply all the pressure and
motion to do the cleaning. The PowerHead’s weight distribution and rotary motion enable
the technician to maneuver the unit easily with less fatigue and without back strain.
The PowerHead’s electric motor drives its precision transmission which, in turn,
rotatesthecleaningheadassembly.TheNatural®cleaningsolutionisinjectedthroughthe
center of the stainless steel gear box shaft directly to the ve spray jets. Soiled solution is
then extracted from the carpet by ve stainless steel extraction cleaning heads and drawn
through the aluminum exhaust manifold to the cleaning unit’s recovery tank.
CONSTRUCTION
Thebase,manifolds,handle,gearboxhousing,andcleaningheadsare all cast aluminum.
Other parts are either metal, stainless steel or high impact plastic.

General Information: 1-2
Harris Research, Inc.
Chem-Dry®PowerHead®
CONTACT INFORMATION
If you have any questions regarding the operation, maintenance or repair of this machine,
please contact your local distributor.
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: General Information
Harris Research, Inc.
Chem-Dry®PowerHead®
WARNINGS, CAUTIONS AND NOTICES
The manufacturer 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: 1-4
Harris Research, Inc.
Chem-Dry®PowerHead®
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2-1: Machine Specications
Harris Research, Inc.
Chem-Dry®PowerHead®
2- Machine Specications
Chem-Dry PowerHead
Length 23”
Base Width 16”
Height 43”
Weight 70 lbs
Motor
1/2Hp, 120 V, 60 Hz
1,725 rpm Input
130 rpm Output
Totally Enclosed Fan-Cooled (TEFC)
Permanently Lubricated
Helical Gear Drive
Oil Capacity 12 oz
Star Head Plate Replaceable, Spring Steel Arms
Cleaning Heads Five Cast Aluminum
Solution Jets Five Stainless Steel, 95015
Solution Strainer Mesh, Stainless
Solution Valve Stainless Steel,
High Pressure
Cleaning Rate Five Heads Rotating at
130 rpm = 650 Cleaning Passes/Minute
Handle
Assembly* Foam Grips, Adjustable Height
Transportation
Wheels 8” diameter, 1-1/2” Wide; Gray, Non-Marking
Electric Cord 50 ft, 14/3
The operating temperature and pressure of the cleaning solution as well as the
vacuum power depend entirely on the type of cleaning system you use.

Machine Specications: 2-2
Harris Research, Inc.
Chem-Dry®PowerHead®
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Harris Research, Inc. 3-1: Assembly Instructions
Chem-Dry®PowerHead®
3 - Assembly Instructions
To prepare your machine for use, follow these instructions:
1. Remove the machine from the packaging.
2. Inspect the machine carefully for any damage that may have occurred during
shipping.
3. Check the gear box lubricant level (see page 6-3 of this Owner’s Manual).
4. Attach the cleaning head to the base.
a. Lean the machine back and rest it on the handle.
b. Thread the star assembly (cleaning head) onto the exposed shaft in a
counterclockwise direction.
Remove the solid shipping plug from the top of the gear box and replace it with
the vented plug provided before operating the machine (see Figure 3-1 and
Figure 3-2). Failure to follow these directions may result in damage to the gear
box and seal.
5. Re-attach the cover onto the PowerHead.
Your machine is now ready to operate.
Figure 3-2. Base without Cover
Shipping
Plug
Figure 3-1. Base with Cover
Gear Box
Cover
Two 8 x 1/2”
Screws

Assembly Instructions 3-2 Harris Research, Inc.
Chem-Dry®PowerHead®
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4-1: Operating Instructions
Harris Research, Inc
Chem-Dry®PowerHead®
4 - Operating Instructions
PREPARATION
Handle Adjustment
Push the clamp forward to loosen
the linkage. Adjust the handle to a
comfortableheight.Pullclampback
to lock in place.
Most technicians have found
better control and less fatigue
when the handle is in a low
position - just around the hip
line. There is an ideal position
for each person which will
ensure the PowerHead will do
the work for you.
Solution and Vacuum Hose
Connections
Your PowerHead is equipped with one 440 stainless steel male quick connect for the
solution hose and an 1 ½” vacuum hose inlet (refer to Figure 4-1). The vacuum inlet
requires a 1 ½” I.D. and a 2” O.D. vacuum hose for proper air ow.
The vacuum hose must be in good condition to ensure maximum airow.
Electrical Cord Connection
The 50 ft electrical cord on your PowerHead is a detachable three-prong grounded line
requiring a three-prong, 15 Amp receptacle. A three-prong to two-prong adapter may be
used, providing its ground wire is properly attached to a grounded terminal.
Donot,underanycircumstances,removethegroundprongfromyourPowerHead
power cord. Serious injury or death may result.
Figure 4-1. Solution and Vacuum
Hose Connections
Solution Hose
Quick Connect
1 1/2” Hose
Inlet

Operating Instructions: 4-2
Harris Research, Inc.
Chem-Dry®PowerHead®
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 of the handle
must be depressed while the trigger is pulled. Once the motor is running, the safety switch
can be released. This must be done each time the trigger is released and the motor is
restarted. This lockout will prevent accidental starting of the motor. On the left hand side,
the trigger controls the low pressure carbonating solution spray. The air ows constantly
while the PowerHead is in operation.
MANEUVERING THE POWERHEAD
Your PowerHead maneuvers like a buffer (see Figure 4-2).
1. To move the PowerHead to the right, lift the handle slightly. The more you lift or
lower the handle, the faster the PowerHead will move.
2. Tomoveforwardandbackward,positionthehandlesothattheunitremainsstationary,
then push forward or pull back. To familiarize yourself with your PowerHead, practice
on an open carpeted area. Depress both the solution trigger and motor trigger and
move the PowerHead slowly in a 3 – 5 ft arc, as shown in Section 5 of this manual.
Do not operate your PowerHead on dry carpets. The friction generated by the
revolving cleaning heads may damage bers in the carpet.
Figure 4-2. PowerHead Maneuvers Like a Buffer

4-3: Operating Instructions
Harris Research, Inc
Chem-Dry®PowerHead®
Once you have become familiar with the speed and movement
of the machine, practice making it hover in one spot. (The
hovering maneuver is useful for removing stubborn stains, as
well as removing furniture indentations.)
Do not tilt machine sideways while moving forward and
backward (see Figure 4-3). A loss of control may result in
damage to the unit or location.
EDGING TOOL
The edging tool is located on the front right-hand side of the
PowerHead.
1. To remove, pull the edging tool upward until the alignment
pin matches the large diameter of the key hole slot.
2. Pull the tool away from the PowerHead and it is ready to
use.
3. When attaching it back onto the machine, rest the end of the tool on the lower elbow
and slide the pin into the key hole slot.
4. Gently push the edging tool into the elbow until it is snug.
Figure 4-3. Incorrect
Use of the Machine

Operating Instructions: 4-4
Harris Research, Inc.
Chem-Dry®PowerHead®
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5-1: Cleaning Information
Harris Research, Inc.
Chem-Dry®PowerHead®
5 - Cleaning Information
CLEANING PATTERNS
For regular carpet cleaning, use an overlapping arc pattern, two times over the same
area (one pass with solution and one pass for drying). When cleaning carpets, rst clean
in circular pattern, then use the overlapping arc pattern to dry the area (see Figure 5-1).
Dirtiest areas may require two or more cleaning passes. Using either pattern,
you should develop a comfortable rhythm. To obtain maximum performance from
your PowerHead, move it slowly and deliberately with a 50% overlap, giving it
time to clean and extract. (Unlike a manual wand, the PowerHead is doing the
work you had to do in the past) A steady pace rather than a frenzied one will
increase efciency and production and decrease fatigue.
The following cautions should be observed while cleaning:
DO NOT operate your PowerHead over metal oor moldings. Damage to both the
molding and the cleaning head will result.
DO NOT operate your PowerHead on hardwood oors. Damage to the oor could
result.
Figure 5-1. Recommended Cleaning Patterns

Cleaning Information: 5-2
Harris Research, Inc.
Chem-Dry®PowerHead®
DO NOT operate your PowerHead over loose or unraveled carpet seams. The
cleaning head may catch and cause further damage.
DO NOT operate your PowerHead on concrete oors. Sharp edges will develop
on the extraction heads which will damage carpet bers.
DO NOT clean over the edge of a loose carpet. Instead, clean only up to the
edge. Damage may occur if the extraction heads catch the loose carpet.
SPECIAL INFORMATION
During the cleaning of some plush carpets, you may notice a “pilling” effect. (Pilling occurs
when uffy particles appear on carpet surfaces; it is caused by bers that loosen because
of weak twist or snags.)
With a PowerHead, loose yarns form balls and are kicked aside as the cleaning heads
revolve. This is normal when aggressive cleaning or even normal vacuuming takes place,
as evidenced by a number of dead, loose yarns in the vacuum cleaner bag.
These loose yarns, in most cases, are short staple yarns or ller yarns used to give the
carpet a denser appearance. Because your PowerHead weighs approximately 70 lbs and
rests on ve 4” cleaning heads, the yarns are not sucked up into the vacuum heads as
they are with a vacuum cleaner or old-style cleaning wand.
The PowerHead may cause further damage to older, rubber-backed, glued down
carpets that may be delaminating with age. When in doubt, DO NOT use your
PowerHead.