Castex GTC-170 User manual

Electric Grout Scrubber
608247
Rev. 00 (07-99)
Model No.:
608245
GTC-170
Operator and Parts Manual
A TENNANT COMPANY
1–800-522–7839
616-786–2330
FAX: [phone]
CUSTOMER SERVICE: 1–800-964–9644
CASTEX INCORPORATED
12875 RANSOM STREET
HOLLAND MI 49424 U.S.A.
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OPERATION
2GTC-170 (07–98)
This manual is furnished with each new model. It
provides necessary operation and maintenance
instructions.
Read this manual completely and understand the
machine before operating or servicing it.
When ordering replacement parts, use the Parts Lists
in this manual. Before ordering parts or supplies, be
sure to have your machine model number and serial
number handy. Parts and supplies may be ordered by
phone or mail from any Authorized Service Center or
Distributor.
This machine will provide excellent service. However,
the best results will be obtained at minimum costs if:
The machine is operated with reasonable care.
The machine is maintained regularly - per the
maintenance instructions provided.
The machine is maintained with manufacturer
supplied or equivalent parts.
MACHINE DATA
Pleasefill out at time of installation for future reference.
Model No.-
Install. Date -
Serial No.-
1999 Castex, A Tennant Company Printed in U.S.A
TABLE OF CONTENTS
SAFETY PRECAUTIONS 3. . . . . . . . . . . . . . . . . . .
SPECIFICATIONS 4. . . . . . . . . . . . . . . . . . . . . . . . .
MACHINE COMPONENTS 5. . . . . . . . . . . . . . . . . .
TRANSPORTING MACHINE 7. . . . . . . . . . . . . . . .
FILLING THE SOLUTION TANK 7. . . . . . . . . . . . .
MACHINE OPERATION 8. . . . . . . . . . . . . . . . . . . .
DRAINING THE SOLUTION TANK 10. . . . . . . . . .
MACHINE MAINTENANCE 11. . . . . . . . . . . . . . . .
STORING MACHINE 16. . . . . . . . . . . . . . . . . . . . . .
ATTACHMENT OPTIONS 17. . . . . . . . . . . . . . . . . .
TROUBLE SHOOTING 19. . . . . . . . . . . . . . . . . . . .
PARTS LIST 20. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
ELECTRICAL DIAGRAM 31. . . . . . . . . . . . . . . . . .
OPTIONS 32. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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OPERATION
GTC-170 (07–99) 3
SAFETY PRECAUTIONS
This machine is suited to scrub floors in an indoor
environment and is not constructed for any other use.
Use only recommended brushes and cleaning
solutions.
All operators must read, understand and practice the
following safety precautions:
The following safety alert symbols are used throughout
this manual as indicated in their description.
WARNING: To warn of hazards or unsafe
practices which could result in severe personal
injury or death.
FOR SAFETY: To identify actions which must be
followed for safe operation of equipment.
The following information signals potentially dangerous
conditions to the operator or equipment:
FOR SAFETY:
1. Do not operate machine:
– Unless trained and authorized.
– Unless operator manual is read and
understood.
– In flammable or explosive areas unless
designed for use in those areas.
– Unless cord is properly grounded.
– With damaged cord or plug.
– If not in proper operating condition.
– In outdoor areas.
– In standing water.
2. Before operating machine:
– Make sure all safety devices are in place
and operate properly.
3. When using machine:
– Do not run machine over cord.
– Do not pull machine by plug or cord.
– Do not pull cord around sharp edges or
corners.
– Do not unplug by pulling on cord.
– Do not stretch cord.
– Do not handle plug with wet hands.
– Keep cord away from heated surfaces.
– Report machine damage or faulty
operation immediately.
4. Before leaving or servicing machine:
– Turn off machine.
– Unplug cord from wall outlet.
5. When servicing machine:
– Unplug cord from wall outlet.
– Avoid moving parts. Do not wear loose
jackets, shirts, or sleeves.
– Use manufacturer supplied or approved
replacement parts.
WARNING: Hazardous Voltage. Shock or
electrocution can result. Unplug machine before
servicing.
WARNING: Flammable materials can cause
an explosion or fire. Do not use flammable
materials in tank(s).
WARNING: Flammable materials or reactive
metals can cause an explosion or fire. Do not pick
up.
GROUNDING INSTRUCTIONS
Machine must be grounded. If it should
malfunction or breakdown, grounding provides a
path of least resistance for electrical current to
reduce the risk of electrical shock. This machine
is equipped with a cord having an
equipment–grounding conductor and grounding
plug. The plug must be plugged into an
appropriate outlet that is properly installed in
accordance with all local codes and ordinances.
Do not remove ground pin; if missing, replace
plug before use.
GROUNDED OUTLET
(3 HOLE)
GROUNDING PIN
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OPERATION
4GTC-170 (07–99)
SPECIFICATIONS
POWER TYPE
Electric AC, 110 VAC, 60 HZ
POWER TRAIN
Electric motor, belt driven brush
Electric motor, vacuum fan
Electric motor, solution pump
PROPELLING SYSTEM
Manually propelled with brush assist in forward
SUSPENSION SYSTEM
Casters – (2) rear, 150 mm (6 in) dia
SYSTEM REFILL FLUID CAPACITIES
Combined Solution/Recovery tank – 30.3 L (8 gal)
GENERAL MACHINE DIMENSIONS
Length – 760 mm (30 in)
Width – 510 mm (20 in)
Height – 890 mm (35 in)
Squeegee width – 470 mm (18.5 in)
Cleaning path width – 430 mm (17 in)
Brush width – 430 mm (17 in)
Brush diameter – 90 mm (3.5 in)
Power cord – 1015 mm (40 ft)
MACHINE WEIGHT
Empty solution tank – 48 kg (107 lb)
Full solution tank – 73.9 kg (163 lb)
Shipping Weight – 51.7 kg (114 lb)
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OPERATION
GTC-170 (07–98) 5
MACHINE COMPONENTS
A
C
D
E
F
G
H
I
I
E
A
B
J
K
A. Scrub Head
B. Solution Tank Cover
C. Power Cord
D. Drain Hose
E. Rear Caster
F. Scrub Head Lift Lever
G. Brush Down Pressure Knob
H. Control Panel
I. Machine Handle
J. Squeegee Height Adjustment Ring
K. Double Scrub Latch
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OPERATION
6GTC-170 (07–98)
A
C
D
E
C
B
CONTROL PANEL
A. Mode Switch
B. Vacuum Fan Switch
C. Brush/Solution Lever(s)
D. Brush Pressure Gauge
E. Brush Circuit Breaker
MODE SWITCH:
The mode switch controls various scrubbing functions.
For normal scrub operation, place the mode switch in
the BRUSH AND WATER (TOP) position. In this
position, both brush and solution pump will operate
when either brush/solution lever is activated. Both
functions will stop when the lever(s) are released.
For double scrub operation, place the mode switch in
the BRUSH ONLY (CENTER) position. When the
lever(s) are activated, only the brush will operate;
solution will not flow.
For attachment option use, place the mode switch in
the WAND (BOTTOM) position. Only the solution
pump will operate in this position.
NOTE: Make sure solution dispensing tube is
disconnected from the female quick disconnect, or the
option is attached to female quick disconnect,
otherwise solution will immediately begin to flow onto
the floor until the tank is emptied.
VACUUM FAN SWITCH:
The vacuum fan switch controls the vacuum fan.
Press the bottom (I) of the switch to turn on the
vacuum fan. Press the top (O) of the switch to turn off
the vacuum fan.
BRUSH/SOLUTION LEVER(S):
The machine has two levers under the machine
handles at the top of the control panel. The
brush/solution lever(s) turn on the scrub brush and the
solution pump. One or both of the levers can be used
to start the scrub brush and solution pump when the
MODE switch is in the BRUSH AND WATER position.
Only the brush will run when the lever(s) are operated
if the MODE switch is in the BRUSH ONLY position. In
the WAND position, neither the brush nor solution
pump are activated by the lever(s).
BRUSH PRESSURE GAUGE:
The brush pressure gauge indicates the pressure of
the scrub brush on the floor. The brush pressure
needle should be at the top of the green zone for the
best scrubbing results.
BRUSH CIRCUIT BREAKER:
The brush circuit breaker protects the brush motor
from overload. If the brush pressure is too high, the
brush circuit breaker will trip and the scrub brush will
stop. To reset the brush circuit breaker, press the
circuit breaker reset button on the circuit breaker. It
may be necessary to allow the circuit breaker to cool
down before resetting, or it may trip again. Reduce the
brush pressure before resuming scrubbing and check
the brush for obstructions.
SCRUB HEAD LIFT LEVER:
The scrub head lift lever raises the scrub head off the
floor. Raise the scrub head with the scrub head lift
lever when transporting the machine from place to
place, and when the machine is not being used. To
raise the scrub head, step on the scrub head lift lever.
To lower the scrub head, pull the lever up with the toe
of your shoe.
BRUSH DOWN PRESSURE KNOB:
The brush down pressure knob adjusts the pressure of
the scrub brush against the floor. The brush down
pressure knob is located on the underside of the scrub
head lift lever. To increase the scrub brush pressure,
turn the pressure knob to the left. To decrease the
scrub brush pressure, turn the knob to the right.
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OPERATION
GTC-170 (07–98) 7
SQUEEGEE HEIGHT ADJUSTMENT RING:
The squeegee height adjustment ring adjusts the
height of the front and back sets of squeegees located
on the scrub head. The adjustment ring is located at
the top of the scrub head. Turning the adjustment ring
adjusts the height and deflection of the squeegees for
proper water pickup. Turn the adjustment ring to the
left to increase deflection, and to the right to decrease
deflection.
DOUBLE SCRUB LATCH:
The double scrub latch locks the squeegees up. The
lever is located on the front of the scrub. Pull up on the
lever and hook it onto the frame above the scrub
head.
PRE-OPERATION CHECKLIST
Check power cord for any wear or damage. Do not
operate machine with a damaged cord.
TRANSPORTING MACHINE
To move the machine from one place to another, raise
the scrub head with the scrub head lift lever. This
makes maneuvering the machine easier. When the
machine is sitting and not being used, raise the scrub
head. This prevents the brush from getting a flat spot.
To raise the scrub head, step on the scrub head lift
lever until it locks into position. To lower the scrub
head, pull up on the scrub head lift lever with the toe
of your shoe.
A
RAISING THE SCRUB HEAD
A. Scrub Head Lift Lever
FILLING THE SOLUTION TANK
1. Unplug the machine and move the machine next
to a water source.
WARNING: Hazardous voltage. Shock or
electrocution can result. Unplug power cord
before servicing.
2. Remove the solution tank cover, letting it hang on
the side of the machine.
3. Using a clean bucket or hose, partially fill the tank
with hot water through the fill opening.
B
A
FILLING THE SOLUTION TANK
A. Fill Opening
B. Solution Tank
ATTENTION: Do not use water hotter than 60C
(140F) in the solution tank or tank damage may
occur.
4. Pour the specified amount of detergent into the
solution tank. Use manufacturer–supplied
detergents for best results. Do not use more
detergent than is recommended for the job.
Powdered detergents are not recommended.
WARNING: Flammable materials can cause
an explosion or fire. Do not use flammable
materials in solution tank.
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OPERATION
8GTC-170 (07–98)
5. Fill the solution tank with water up to the bottom
link of the chain hanging inside the tank. DO NOT
OVERFILL or damage to the vacuum motor may
occur.
B
A
FILL LEVEL OF SOLUTION TANK
A. Fill Opening
B. Bottom Of Fill Chain
NOTE: If the area to be cleaned already has puddles
of standing water (such as swimming pool decks), DO
NOT COMPLETELY FILL the solution tank. Picking up
excess water will cause the solution tank to overfill and
solution may enter and damage the vacuum motor.
6. Place the solution tank cover on the solution tank
and make sure the cover gasket seals the tank.
MACHINE OPERATION
PRE–OPERATION
1. Sweep or dust mop the entire area to be
scrubbed. Loose objects or debris will plug
squeegee openings and cause streaking and poor
water pickup.
2. Remove gum or other such materials stuck to the
floor with a putty knife or scraper.
3. Determine which cleaning mode is best for the
floor condition, normal scrub or double scrub .
NORMAL SCRUBBING OPERATION
1. Plug the machine into a wall outlet.
2. Set the MODE switch to the BRUSH AND WATER
(TOP) position.
3. Turn on the vacuum fan switch.
4. Lower the scrub head by pulling up on the scrub
head lift lever with the toe of your shoe.
5. Pull up on both or one of the switch levers and
proceed to scrub. The machine can be pushed
and pulled like a vacuum cleaner.
WARNING: Flammable materials or reactive
metals can cause an explosion or fire. Do not pick
up.
6. Watch the water pick up of the machine.If the
machine is leaving water on the floor, adjust the
squeegees as follows:
Push the machine forward. Look at the front set of
squeegees. The inside squeegee should be
straight up and down and touch the floor. The
outside squeegee will bend over and touch the
inside squeegee.
The same applies for the rear set of squeegees
when the machine is pulled backward. The inside
squeegee should be straight up and down and
touch the floor. The outside squeegee will bend
over and touch the inside squeegee.
AB
C
AA ABBB
C
SQUEEGEE ADJUSTMENT
A. Outside Squeegee Blade
B. Inside Squeegee Blade
C. Scrub Head
Both squeegees are adjusted at the same time. To
adjust the squeegees, use the squeegee height
adjustment ring located on the top of the scrub
head. Turn the adjustment ring until the
squeegees are adjusted as shown. Pull the
machine back and push the machine forward
checking the adjustment of the squeegees.
B
A
SQUEEGEE HEIGHT ADJUSTMENT RING
A. Scrub Head
B. Squeegee Height Adjustment Ring
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OPERATION
GTC-170 (07–98) 9
Squeegee adjustment is more precise if the floor
is wet with cleaning solution. DO NOT APPLY
TOO MUCH PRESSURE or the squeegees will
smear the floor and wear prematurely.
7. Pull up on one or both of the brush/solution levers
to check the brush pressure.
D
A
C
B
BRUSH PRESSURE GAUGE
A. Brush Pressure Gauge
B. Brush Pressure Gauge Needle
C. Red Zone
D. Green Zone
The brush pressure gauge needle should be at the
top of the green zone. If necessary, adjust the
brush pressure with the brush down pressure knob
until the brush pressure needle reads at the top of
the green zone. The adjustment works better if the
floor is wet with cleaning solution.
A
B
BRUSH DOWN PRESSURE KNOB
A. Scrub Head Lift Lever
B. Brush Down Pressure Knob
8. Pull up on both or one of the switch levers and
proceed to clean. The machine can be pushed
and pulled like a vacuum cleaner. The
recommended scrubbing path is pushing the
machine forward, overlapping paths, much like
mowing a lawn.
SCRUBBING WITH MACHINE
9. When cleaning next to walls or under kickboards,
use the operator’s right side of the machine for
closer scrubbing.
10. Watch for foam buildup in the tank through the
clear tank cover. If the foam starts rising into the
fill area of the solution tank, shut off the machine.
Add defoamer to the solution tank, or drain some
of the solution from the tank and add clean water.
AB
FOAM IN FILL AREA
A. Solution Tank Cover
B. Fill Area
11. When finished scrubbing, turn off the vacuum fan
switch and raise the scrub head by stepping on
the scrub head lift lever.
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OPERATION
10 GTC-170 (07–98)
DOUBLE SCRUBBING
Double scrubbing means running the machine over an
area several times to get extra scrubbing action. In the
double scrub operation, the brush will operate by
activating the brush/solution lever(s), but no additional
cleaning solution will be applied.
1. Set the MODE switch in the BRUSH ONLY
(CENTER) setting.
2. Turn OFF the vac fan switch.
3. Lift up on the double scrub latch and hook it into
the machine frame above the scrub head to keep
the squeegee blades off the floor.
A
LIFTING UP SCRUB HEAD
A. Double Scrub Latch
4. With the scrub head on the floor, pull up on the
brush/solution lever(s) and go slowly over the area
you wish to double scrub as many times as
necessary. In the double scrub mode, no further
cleaning solution will be dispensed.
5. When you have completed double scrubbing, turn
on the vacuum fan, and go over the area to
vacuum up the solution.
6. When finished scrubbing, turn off the vacuum fan
switch and raise the scrub head by stepping on
the scrub head lift lever.
DRAINING THE SOLUTION TANK
1. Unplug the power cord from the wall outlet and
place the machine next to a floor drain.
WARNING: Hazardous voltage. Shock or
electrocution can result. Unplug machine before
servicing.
2. Pull the drain hose from the retaining clip on the
back of the machine.
3. Loosen the drain plug by turning the drain plug
knob to the left.
4. Remove the drain plug while holding the hose up.
Quickly lower the hose to the floor drain, as the
solution rushes out of the drain hose. Flow rate
can be reduced by squeezing the hose.
A
B
DRAINING THE SOLUTION TANK
A. Floor Drain
B. Drain Hose
5. With the hose open, flush out the inside of the
tank with clean water. Make sure the screen filter
at the bottom of the tank is rinsed completely. The
filter may be removed for better cleaning by
unscrewing it from the fitting. MAKE SURE THE
FILTER IS INSTALLED PRIOR TO USING THE
MACHINE AGAIN. Do not overtighten filter in
fitting.
NOTE: Do not use water hotter than 60  C (140  F) in
the solution tank or tank damage may occur.
B
A
SCREEN FILTER
A. Solution Tank
B. Screen Filter
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OPERATION
GTC-170 (07–99) 11
6. Pull the vacuum inlet filter out of the side of the fill
area and rinse the filter with clean warm water.
Push the inlet filter back into the fill area making
sure the screen is facing down into the tank.
B
A
VACUUM INLET FILTER
A. Fill Area
B. Vacuum Inlet Filter
7. When the solution tank is completely drained and
flushed, place the drain plug back into the end of
the drain hose and turn the end of the drain plug
to the right to tighten the plug. Place the drain
hose back into the retaining clip on the back of the
machine.
POST-OPERATION CHECKLIST
Check this list of items over after operating the
machine:
Check power cord for wear or damage. Repair or
replace if required. Wipe cord clean and wrap
around the machine handles.
Raise the scrub head by stepping on the scrub head
lift lever.
Flush squeegee housing with hot water, especially if
the machine is used in greasy areas.
Wipe grease/debris buildup from squeegee and
squeegee nozzles.
Check for and remove any string or material
wrapped around the scrub brush.
Check the solution dispensing tube for any plugged
holes.
Check the squeegees for wear or any damage.
Replace any worn or damaged squeegees.
Push the machine to an area to be kept until it is
needed again. Be sure the scrub head is raised.
Freeze protect machine if it will be stored or
transported in areas where solution in the system
may freeze and damage the components. See
FREEZE PROTECTION under STORAGE
INFORMATION .
MACHINE MAINTENANCE
The DAILY, WEEKLY , and MONTHLY maintenance
requirements listed here may be performed without
tools by the machine operators. Instructions for these
maintenance requirements are provided in this section
of the manual.
The EVERY SIX MONTHS maintenance requirements
should only be performed by trained technicians.
FOR SAFETY: When servicing machine, unplug
cord from wall outlet.
DAILY
1. Perform all duties listed under PRE-OPERATION
and POST-OPERATION check lists.
2. If machine is to be transported or stored under
freezing conditions, machine (and any options)
must be freeze protected. See FREEZE
PROTECTION under STORAGE INFORMATION .
WEEKLY
1. Flip the scrub brush end-for-end to prevent a “set”
and increase life.
2. Remove and clean/flush solution dispensing tube.
3. Remove and clean/flush solution screen filter in
the solution tank.
MONTHLY
1. Remove scrub head from machine and thoroughly
clean.
2. Check the scrub brush for wear; replace brush if
remaining bristles measure less than 20 mm
(0.62 in) in length.
EVERY THREE MONTHS
1. Lubricate brush housing pivot pins/bearings with
light oil.
2. Check and tighten all fasteners/hardware.
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OPERATION
12 GTC-170 (07–98)
EVERY SIX MONTHS
Six month and yearly maintenance is recommended to
be performed by technicians from your authorized
Service Center. Six month maintenance includes
weekly and monthly maintenance, plus:
1. Vacuum motor brush inspection.
2. Brush motor carbon brush inspection.
3. Solution pump carbon brush inspection.
4. Brush bearing/seal inspection/replacement.
5. Check brush drive belt alignment/wear. Replace
belt if required.
SCRUB HEAD
The scrub head encloses the scrub brush, a solution
dispensing tube, a set of squeegee blades mounted
on the front and rear. The scrub head and squeegee
blades should be flushed daily to remove soil buildup,
especially grease, and obstructions.
DAILY FLUSHING OF SCRUB HEAD:
1. Unplug the power cord from the wall outlet.
WARNING: Hazardous voltage. Shock or
electrocution can result. Unplug machine before
servicing.
2. Raise the scrub head by stepping on the scrub
head lift lever with your foot.
3. Position the machine over a floor drain next to a
hot water supply with a hose.
4. Disconnect the vacuum pick up hose from the
solution tank inlet.
A
B
DISCONNECT VACUUM PICK UP HOSE
A. Vacuum Pick Up Hose
B. Solution Tank
5. Using hot water under normal water pressure,
insert water hose into the top of the scrub head
and allow the water to flush out the housing and
blade area.
A
B
FLUSHING SQUEEGEE HOUSING
A. Hose
B. Scrub Head
6. With a wet cloth, wipe off all four (4) squeegee
blades to prevent grease buildup. At the same
time, inspect each blade for wear or damage.
Replace if required.
B
A
CLEANING SQUEEGEE BLADES
A. Cloth
B. Squeegee Blade
7. Re-install vacuum pickup hose on machine.
MONTHLY CLEANING OF SCRUB HEAD:
The scrub head should be thoroughly cleaned monthly.
Lubricate the pivot pins and bearings at the same
time.
1. Unplug the power cord from the wall outlet.
WARNING: Hazardous voltage. Shock or
electrocution can result. Unplug machine before
servicing.
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OPERATION
GTC-170 (07–99) 13
2. Remove the scrub head assembly from the
machine.
3. Flush the scrub head under clean water. Run
water in between the squeegee blades to flush out
the vacuum inlets.
A
A
B
C
SCRUB HEAD VACUUM INLETS
A. Squeegee Blades
B. Scrub Head
C. Vacuum Inlets
4. Flush the dispensing tube with clean hot water.
5. Place the scrub head back in place on the
machine. Pull down on the spring located above
the squeegee height adjustment ring and slip the
top of the scrub head into the machine. The spring
will center the scrub head in the vacuum inlet
bracket.
6. Push the side links back onto both sides of the
scrub head. Every 3 months, lubricate pins and
bearings with light oil.
SCRUB BRUSH
The scrub brush should be checked daily to remove
any string or other material wrapped around it. The
scrub brush should be flipped end-for-end every week
to prevent the bristles from taking a “set” and to
increase brush life. The brush should be changed
when the remaining bristles measure 20 mm (0.62 in)
or less in length.
REPLACING SCRUB BRUSH OR ROTATING AN
OLD BRUSH:
1. Unplug the machine and raise the scrub head by
stepping on the scrub head lift lever with your foot.
WARNING: Hazardous voltage. Shock or
electrocution can result. Unplug machine before
servicing.
2. Loosen the brush plate knob by turning to the left.
Remove the brush plate knob from the side of the
scrub head.
A
B
REMOVING BRUSH PLATE KNOB
A. Brush Plate Knob
B. Scrub Head
3. Pull the brush plate off the side of the scrub head.
B
A
REMOVING BRUSH PLATE
A. Brush Plate
B. Scrub Head
4. Pull the brush out of the scrub head.
A
B
REMOVING BRUSH
A. Brush
B. Scrub Head
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OPERATION
14 GTC-170 (07–98)
5. Push the new or flipped brush into the scrub head.
6. Line up the two slots in brush end with the two
tabs on the brush plug on the drive end of the
scrub head. Make sure the brush pushes all the
way on the brush plug. If the brush does not
engage properly on the brush plug, the brush plate
will not mount to the machine.
7. Line up the brush plate plug with the end of the
brush by putting the tabs on the plug in the brush
slots. Place the brush plate knob in the brush plate
and mount the brush plate to the side of the scrub
head. Turn the brush plate knob to the right to
tighten it.
SOLUTION DISPENSING TUBE
The solution dispensing tube is located at the front and
on the inside of the scrub head. The small holes drilled
in the tube evenly dispense the cleaning solution over
the brush. The dispensing tube can be removed from
the scrub head for cleaning if required. Clean the tube
if the solution does not dispense evenly over the
brush.
CLEANING THE DISPENSING TUBE:
1. Unplug the machine. Disconnect the solution feed
hose from the quick disconnect by pulling back on
the knurled sleeve of the female disconnect until
the male fitting releases.
WARNING: Hazardous voltage. Shock or
electrocution can result. Unplug machine before
servicing.
A
B
DISCONNECT SOLUTION HOSE
A. Solution Hose
B. Female Quick-disconnect
2. A small cap is located on the other end of the
dispensing tube. To remove the dispensing tube
from the scrub head pull the tube straight out of
the scrub head. The small cap will pop off the end
of the tube. DO NOT lose the cap. Pull the tube
from the housing, taking care not to bend it.
B
A
REMOVING DISPENSING TUBE
A. Solution Hose
B. Dispensing Tube
3. Clean the small dispensing holes with a piece of
wire or a pin, and rinse the tube out with clean hot
water.
4. Place the tube back in the scrub head.
5. Push the cap back on the other end of the tube.
Make sure the cap fits tightly on the end of the
dispensing tube.
A
B
DISPENSING TUBE CAP
A. Scrub Head
B. Dispensing Tube Cap
6. Connect the solution hose male fitting to the
female fitting by pulling back on the knurled sleeve
on the female and inserting the male fitting.
Release the sleeve and make sure the hose is
properly connected by pulling lightly on it.
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OPERATION
GTC-170 (07–98) 15
SOLUTION SCREEN FILTER
The solution filter filters the cleaning solution before
reuse. The filter is normally flushed clean after every
use during the tank flushing procedure. For more
thorough cleaning on a periodic basis do as follows:
1. Unplug the power cord from the wall outlet.
WARNING: Hazardous voltage. Shock or
electrocution can result. Unplug machine before
servicing.
2. Remove cover from solution tank and hang from
chain.
3. Reach into tank and unscrew the screen filter from
fitting by turning to the left.
4. Using a hose with warm water under normal
pressure, flush the filter from the inside out.
B
A
FLUSHING SOLUTION SCREEN FILTER
A. Solution Screen Filter
B. Hose
5. If filter screen material is excessively plugged,
soak overnight in a solution of 1 part white vinegar
to 10 parts water. Flush with water after soaking.
6. Place filter back on to threaded fitting and turn to
the right. Do not overtighten.
NOTE: Take care not to damage the filter. Do not use
a filter with a hole or tear. Damage may occur to the
pump if the machine is operated without the filter in
place or if the filter is removed before the tank is
completely drained. DO NOT ALLOW ANY DEBRIS
INTO PUMP INTAKE LINE.
REMOVING THE SCRUB HEAD ASSEMBLY
The following procedure is recommended if all
squeegee blades are being replaced, and/or if the
scrub head is being cleaned under the MONTHLY
CLEANING OF SCRUB HEAD . It is recommended
that the pivot pins and bearings be lubricated at the
same time.
1. Unplug the power cord from the wall outlet.
WARNING: Hazardous voltage. Shock or
electrocution can result. Unplug machine before
servicing.
2. Remove the scrub brush.
3. Disconnect the solution hose quick disconnect.
4. Disconnect the vacuum pick up hose from the top
of the scrub head.
A
B
DISCONNECT VACUUM PICK UP HOSE
A. Vacuum Pick-up Hose
B. Solution Tank
5. Pull the side links off both sides of the scrub head.
A
B
RIGHT SIDE SCRUB HEAD LINK
A. Scrub Head Link
B. Scrub Head
6. Pull the spring located above the squeegee height
adjustment ring down and remove the scrub head
from the machine.
7. Turn the scrub head upside-down.
8. To reinstall the scrub head assembly, place the
scrub head back in place on the machine. Pull
down on the spring located above the squeegee
height adjustment ring and slip the top of the scrub
head into the machine. The spring will center the
scrub head in the vacuum inlet bracket.
9. Push the side links back onto both sides of the
scrub head. Every 3 months, lubricate pins and
bearings with light oil.
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OPERATION
16 GTC-170 (07–99)
10. Connect the solution hose quick disconnect.
11. Connect the vacuum pick-up hose to the top of the
scrub head.
12. Install the brush in the scrub head.
SQUEEGEE BLADES
The scrub head has 2 sets of 2 squeegee blades on
the front and back. These blades squeegee up the
solution off the floor in the forward and reverse
directions. The front and rear squeegee blades (with
the many corrugations) should be checked for damage
and wear daily. When the inside wiping edge of the
front and rear (corrugated) blades become rounded or
have tears in them, they will not pick up solution
properly. Replace any worn or damaged squeegee
blades. The inside squeegee blades (the ones with the
slots) normally only need to be checked monthly.
REPLACING SQUEEGEE BLADES:
1. Unplug the power cord from the wall outlet.
WARNING: Hazardous voltage. Shock or
electrocution can result. Unplug machine before
servicing.
2. Raise the scrub head by stepping on the scrub
head lift lever with your foot.
3. Grasp the end of the squeegee blade(s) that need
replacing and pull it sideways out of the blade
retainer. Use a dry cloth to grasp the squeegee
blade if needed.
A
B
REMOVING SQUEEGEE BLADE
A. Squeegee Blade
B. Scrub Head
4. Lubricate new squeegee blade in water/detergent
from tank. Pull new squeegee blade into the scrub
head blade retainer until it is centered in the scrub
head. Use a dry cloth if needed to grip squeegee
while pulling it into retainer.
5. If all the squeegees need to be replaced, remove
the scrub head assembly from the machine.
6. Pull out any squeegee blades that need replacing.
A
B
REMOVE SQUEEGEE BLADE
A. Squeegee Blade
B. Scrub Head
NOTE: Use a dry cloth to help get a grip on the
squeegee blade end to pull the blade out of the scrub
head.
7. Pull the new squeegee blade into the scrub head
from the blades end until the blade is centered in
the scrub head.
NOTE: Lubricate the new squeegee blade with some
detergent to make pulling the blade into the scrub
head much easier. Use a dry cloth to help get a grip
on the squeegee blade end to pull the blade out of the
scrub head.
8. Flush out the scrub head assembly and install it
back on the machine.
STORING MACHINE
Freeze protection of the machine is necessary to
prevent damage to components of the solution system
when the machine is going to be exposed to freezing
temperatures.
ATTENTION: Freezing temperatures can severely
damage components. Do not store or transport
machine in areas where freezing of solution
contents could occur, unless machine is freeze
protected. Failure of components due to lack of
freeze protection voids the warranty on such
components.
FREEZE PROTECTION
1. Pour 3.8 L (1 gal) of pre-mixed automotive-type
windshield washer solution into solution tank.
ATTENTION: Do not use cooling system
anti-freeze such as ethylene glycol.
2. Move machine over floor drain and plug the power
cord into an outlet.
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OPERATION
GTC-170 (07–98) 17
3. Set the MODE switch in the WAND position. The
pump will start and spray through the feed tube to
the floor. Run in this manner until all of the solution
is dispensed.
4. Repeat the same process for any wand
attachments that may freeze by attaching wand to
the machine and opening the hand valve until all
solution is dispensed.
ATTENTION: Machines and attachments that have
been freeze protected must be flushed completely
prior to normal use. Follow directions for the
appropriate cleaning process, but run your
selected cleaning solution through the system to
purge all anti-freeze before starting the cleaning
process.
ATTACHMENT OPTIONS
CONNECTING ATTACHMENTS TO THE MACHINE
NOTE: All attachments connect in the same way.
1. Attach male end of solution feed hose to the
female quick-disconnect on the machine. Push the
male connector in until it stops. Pull on the hose to
make sure it is connected.
B
A
CONNECTING SOLUTION FEED HOSE
A. Male Quick-Disconnect
B. Female Quick-Disconnect
2. Pull the vacuum hose off the solution tank, and
firmly insert the hose cuff from the wand
attachment hose into the tank.
A
B
CONNECTING ATTACHMENT HOSE
A. Wand Attachment Hose
B. Solution Tank
3. Attach the other ends of the solution and vacuum
hoses to the selected attachment tool in the same
way.
A
B
C
D
CONNECTING ATTACHMENT
A. Solution Hose Quick-Disconnect
B. Vacuum Hose
C. Valve Handle
D. Selected Attachment
4. Set the MODE switch to the WAND position. Turn
the VAC switch to ON.
5. To disconnect the attachment, reverse the above
steps.
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OPERATION
18 GTC-170 (07–98)
USING THE ATTACHMENTS
The attachments only work properly by pulling them
toward you, not pushing. Set the vacuum end of the
tool on the surface and squeeze the valve lever.
Immediately begin pulling the tool toward you,
spraying the surface with detergent and immediately
vacuuming up the solution.
A
B
UPHOLSTERY/STAIR TOOL
A. Upholstery Tool
B. Valve Handle
To scrub with the hard floor wand, flip the cleaning tool
so the brush is facing down.
A
B
HARD FLOOR WAND
A. Cleaning Tool
B. Brush
To vacuum up the solution with the hard floor wand,
flip the cleaning tool so the squeegee side is facing
down. Push and/or pull the tool across the floor to pick
up the solution.
AB
HARD FLOOR WAND
A. Cleaning Tool
B. Squeegee
If the hard floor wand is difficult to push or does not
pick up the solution properly, adjust the roller wheels
on the tool by turning the black adjustment knob.
A
B
ADJUSTING ROLLER WHEELS
A. Adjustment Knob
B. Roller Wheels
The wheels are properly adjusted when the squeegee
blades deflect slightly while the tool is pushed back
and forth.
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OPERATION
GTC-170 (07–98) 19
TROUBLE SHOOTING
PROBLEM CAUSE SOLUTION
Machine does not operate. Power cord not plugged in Plug into proper receptical
Building circuit breaker tripped Reset breaker
Power cord/plug damaged Repair or replace
Electrical malfunction Call Service Center
Vacuum motor does not
o
p
erate when switch
Worn motor brushes Call Service Center
opera
t
e w
h
en sw
it
c
h
activated. Electrical malfunction Call Service Center
Pump does not run; solution
will not dispense to floor
MODE switch is in wrong position Move switch to proper position
will not dispense to floor. Solution tank is empty or low Fill solution tank
Quick-disconnect not connected Connect properly
Tank filter is plugged Remove and clean filter
Solution feed tube is plugged Remove and clean tube
Electrical or pump malfunction Call Service Center
Brush does not run. MODE switch is in wrong position Move switch to proper position
Circuit breaker is tripped Reset breaker (reduce brush
pressure)
Drive belt broken Call Service Center
Electrical malfunction Call Service Center
Brush circuit breaker trips. Excessive brush pressure Reduce brush pressure
Electrical malfunction Call Service Center
Brush does not clean floor. Excessive soil may require several
passes to clean Double scrub area
Brush worn Replace brush
Improper chemical for job Select proper chemical
Solution feed will not shut off. MODE switch in improper position Move switch to proper position
Pump malfunction Call Service Center
Poor vacuum pickup or
streaking
Squeegee intake slots plugged Clean
streaking. Improper squeegee adjustment Adjust
Poor gasket seal on tank cover Repair or replace
Worn or damaged squeegee blades Replace blades
Foam builds up in cover area
and/or foam exits motor
l
Excessive or improper chemical used Drain tank and refill with proper
dilution
louvers. Solution level too high Reduce solution level below chain
Air leak in cover gasket Repair or replace
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PARTS LIST
GTC-170 (07–98)
20
Motor Frame Group
1
Tank
2
3
4
5
6
7
8
910
11
12
13
14
15
16
17
18
19
20
21
22
23
24
30
27
28
25
26
31
33
32
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
50
51
18
29
30
29
35
37
46
52
53
54
49
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