Page 1
Model No. WLSB63940
Visit our website at
www.weslo.com
new products, prizes,
fitness tips, and much more!
Serial No.
The serial number is on a plastic sign
inside the spa behind the access
panel. Record the serial number in
the space above.
Access Panel
QUESTIONS?
If you have questions, or if there
are missing parts, we will guarantee complete satisfaction
through direct assistance from
our factory.
USER’S MANUAL
TO AVOID UNNECESSARY
DELAYS, PLEASE CALL DIRECT
TO OUR TOLL-FREE CUSTOMER
HOT LINE. The trained technicians on our customer hot line
will provide immediate assistance, free of charge to you.
CUSTOMER HOT LINE:
1-877-897-7493
Mon.–Fri., 8 a.m.–5 p.m. CST
CAUTION
Read all precautions and instructions in this manual before using
this equipment. Save this manual
for future reference.
Page 2
Table of Contents
Posting the Warning Sign . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Important Safety Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Before You Begin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Choosing a Location for the Hydrotherapy Spa . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Using the Hydrotherapy Spa . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Jet Layout Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Using the Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Part List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Exploded Drawing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Ordering Replacement Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Back Cover
Limited Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Back Cover
Posting the Warning Sign
The warning sign shown below must be posted on a wall or fence where it will be visible to all users of the
hydrotherapy spa. Whenever the spa is moved, the sign must also be moved and reposted near the spa. If the
sign becomes lost or illegible, call our toll-free Customer Hot Line at 1-877-897-7493 to obtain a replacement
sign. Post the sign as described above.
WESLO is a registered trademark of ICON Health & Fitness, Inc.
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Important Safety Instructions
WARNING: To reduce the risk of drowning, electric shock, or serious injury, read the fol-
lowing important precautions before using the hydrotherapy spa.
READ AND FOLLOW ALL INSTRUCTIONS
1. It is the responsibility of the owner to ensure
that all users of the hydrotherapy spa are
adequately informed of all precautions.
2. Use the hydrotherapy spa only as described
in this manual.
3. The hydrotherapy spa is intended for home
use only. Do not use the spa in a commercial,
rental, or institutional setting.
4. Use the hydrotherapy spa only on a level surface. Do not use the spa on carpet or other
materials that could be damaged by moisture.
5. The hydrotherapy spa will weigh approximately 2,750 pounds when it is filled with
water. Make sure that the location you select
for the spa will support this weight, plus the
weight of the occupants.
6. Inspect and tighten all parts regularly.
Replace any worn parts immediately.
7. DANGER—Risk of injury: Do not remove or
alter the covers on the suction fittings. Never
operate the hydrotherapy spa if the suction
guard is missing or broken. If you need to
replace a suction fitting or pump, make sure
you use only manufacturer recommended
replacement parts. Keep hair and body parts
away from the suction guard. Do not allow
long hair to float freely in the water; long hair
should be restrained with a bathing cap.
8. IMPORTANT: Do not allow the hydrotherapy
spa to be exposed to direct sunlight when it
is empty. The surface of the spa shell can
reach temperatures as high as 150°F in a matter of minutes if exposed to the sun while it is
empty. These high temperatures can cause
significant damage, such as blistering of the
shell surface and warping of the spa shell.
Any damage caused by sun exposure is not
covered under the warranty.
9. Do not bring any object into the hydrotherapy
spa that could damage the spa shell.
10. Never insert any object into any opening.
11. Do not use breakable containers in or near
the hydrotherapy spa.
12. Do not sit on the spa cover or place objects
on it; it is not designed to support weight.
13. Remove any water or debris that may collect
on the spa cover.
14. Keep children under the age of 12 and pets
away from the hydrotherapy spa when it is
not in use.
15. Keep all chemicals away from children and
pets.
16. The pH and chemical balance of the water
must be maintained as explained in this manual (see pages 10 and 14). Failure to do so
may cause injury to users or damage to the
hydrotherapy spa, and will void the warranty.
17. Individuals with infections and open sores or
wounds should not use the hydrotherapy
spa. Bacteria thrive in warm and hot water.
Always keep your spa disinfected and maintain the proper chemical balance.
18. Shower before and after using the hydrotherapy spa. This will remove any deodorant, perspiration, or body oils that could contaminate
the water. Showering after will remove any
residual chemicals and any bacteria that may
have been in the spa.
19. WARNING—The Ground Fault Circuit
Interrupter (GFCI), must be tested before
each use. To test the GFCI, press the “test”
button while the hydrotherapy spa is running.
The spa should shut off. Press the “reset”
button. The spa should resume normal operation. If the spa continues to run after the
“test” button is pressed, then the GFCI is
damaged. Do not use the spa until the GFCI
has been repaired or replaced by a qualified
electrician.
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20. DANGER—Risk of electric shock. Keep all
electrical appliances such as radios, telephones, televisions, and lights at least five
feet away from the water.
21. A wire connector is provided on the electronics pack of the hydrotherapy spa to connect a
2
minimum No. 6 AWG (13.3mm
) solid copper
conductor between the spa and any metal
equipment, electrical enclosure made of
metal, metal water pipes, or conduit within
five feet of the spa.
22. DANGER—Risk of electric shock: Do not set
the hydrotherapy spa within five feet of any
metal objects or surfaces. As an alternative,
you may use the spa within five feet of metal
objects if each metal object is permanently
connected to the wire connector on the electronics pack of the spa by a minimum No. 6
2
AWG (13.3mm
) solid copper conductor (see
instruction 21).
23. Do not operate the pump motor when the
hydrotherapy spa is empty. The pump motor
may be seriously damaged if it is operated
without water circulating.
24. DANGER—Risk of drowning: Exercise
extreme caution to prevent unauthorized and
unsupervised use of the hydrotherapy spa by
children. Children must always be supervised.
25. DANGER—To reduce the risk of drowning:
• Never use the hydrotherapy spa alone.
• Children should not use the spa unless they
are supervised by an adult.
• Keep pets away from the spa at all times.
• Always replace and lock the spa cover when
the spa is not in use.
26. WARNING—To reduce the risk of injury: The
water temperature should never exceed
104°F. Temperatures between 100°F and 104°F
are considered to be safe for healthy adults.
However, if you plan to remain in the hydrotherapy spa for more than 10 to 15 minutes, a
lower temperature is recommended. Lower
temperatures are also recommended for children. Children should not be allowed to swim
under the surface of the water in the spa.
27. WARNING—To reduce the risk of injury:
Before entering the hydrotherapy spa, always
use an accurate thermometer to determine
the water temperature.
28. WARNING—To reduce the risk of injury:
Pregnant women should consult with their
physician before using the hydrotherapy spa.
Pregnant women should not use the spa if
the water temperature is above 100°F; the
unborn child could be seriously harmed. This
is especially important during the first 90
days of the pregnancy.
29. DANGER—To reduce the risk of drowning:
Prolonged immersion in the hydrotherapy spa
may cause hyperthermia. The causes, symptoms and effects of hyperthermia may be
described as follows: Hyperthermia occurs
when the internal temperature of the body
reaches a level several degrees above the
normal body temperature of 98.6°F. The symptoms of hyperthermia include an increase in
the internal temperature of the body, dizziness, lethargy, drowsiness and fainting. The
effects of hyperthermia include failure to perceive heat; failure to recognize the need to
exit the spa or hot tub; unawareness of
impending hazard; fetal damage in pregnant
women; physical inability to exit the spa or
hot tub and unconsciousness resulting in
danger of drowning. WARNING: The use of
alcohol, drugs or medication can greatly
increase the risk of fatal hyperthermia.
30. WARNING—To reduce the risk of drowning:
Do not use the hydrotherapy spa if you are
under the influence of alcohol or drugs. Heat
from the water, in conjunction with alcohol or
drugs, can cause loss of consciousness.
31. WARNING—To reduce the risk of injury or
drowning: Consult your physician about possible side-effects of any medications you may
be taking before using the hydrotherapy spa.
Heat from the water, in conjunction with some
medications, may cause drowsiness and
increase the risk of drowning. Other medications can effect blood pressure, heart rate,
and circulation.
32. Do not use the hydrotherapy spa immediately
after strenuous exercise.
33. If you feel pain or dizziness at any time while
using the hydrotherapy spa, discontinue use
and contact a physician.
34. WARNING—To reduce the risk of injury: It is
especially important for persons over the age
of 35 or persons with pre-existing health
problems, such as obesity, heart disease,
high or low blood pressure, circulatory problems, or diabetes to consult their physician
before using the hydrotherapy spa.
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35. WARNING: The spa jets produce a stream of
water with relatively high pressure. Prolonged
exposure of a localized area of the body may
cause bruises to the skin.
36. The included warning sign must be posted
where all users of the hydrotherapy spa can
see and read it. (See POSTING THE WARNING
SIGN on page 2.)
37. WARNING DECAL PLACEMENT: Locate the
decals shown below and familiarize yourself
with the information on the decals.
WARNING: Read all instructions before using the hydrotherapy spa. ICON assumes no
responsibility for personal injury or property damage sustained by or through the use of this product.
SAVE THESE INSTRUCTIONS
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Before You Begin
Congratulations for selecting the new WESLO®KEY
LARGO hydrotherapy spa. The innovative KEY
LARGO allows you to enjoy all the benefits of
hydrotherapy in the comfort and privacy of your home.
Hydrotherapy is a proven method for soothing tired
muscles after exercise or for relieving the stress of a
busy life. The warm environment stimulates blood flow,
which is essential in the healing process, and the
powerful massage action eases tension and stress
throughout the body. The hydro-therapy spa gives you
the specialized treatment you need to feel your best.
For your benefit, read this manual carefully before
Spa Shell
Jet
using the KEY LARGO.
tions, please call our Customer Service Department tollfree at 1-877-897-7493, Monday through Friday,
8 a.m. until 5 p.m. Central Time (excluding holidays). To
help us assist you, please mention the product model
number and serial number when calling. The model
number is WLSB63940. The serial number can be
found on a decal attached to the access panel inside
the spa (see the front cover of this manual).
Before reading further, please familiarize yourself with
the parts that are labeled in the drawing below.
Console
Filter
If you have additional ques-
Air Controls 1, 2, and 3
Short Panel
Corner Panel
Access Panel
Locking
Buckle
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Choosing a Location for the Hydrotherapy Spa
There are many factors to consider when choosing a location to set up the hydrotherapy spa. These factors vary
depending on whether you plan to use the spa inside or outside. We have listed several factors you may wish to
consider as you decide where to set up the spa.
If you set up the hydrotherapy spa inside:
1. The spa will increase the level of humidity in your
home. The location you choose should be well
ventilated. You may need to install a ventilation fan
or use a dehumidifier.
2. The spa should be located near a 240-volt power
source. It must be wired directly into a grounded
circuit breaker with a Ground Fault Circuit
Interrupter (GFCI) capable of carrying 40 amps.
No other appliance should be on the same circuit.
3. The spa should be close to a source of water.
4. Do not use the spa on carpet or other material that
may be damaged by moisture. We recommend
that you place the spa on a water- and stain-resistant, non-slip surface with a floor drain for any
water that may splash from the spa.
5. Make sure that the location you choose is stable. It
must be able to support the weight of the spa
when it is filled with water, plus the weight of the
occupants. The spa weighs approximately 2,750
pounds when it is filled with water.
If you set up the hydrotherapy spa outside:
1. Check local building codes concerning the use of
outdoor spas.
2. The spa should be located near a 240-volt power
source. It must be wired directly into a grounded
circuit breaker with a Ground Fault Circuit
Interrupter (GFCI) capable of carrying 40 amps.
No other appliance should be on the same circuit.
3. The spa should be close to a source of water.
4. We recommend that you place the spa on a waterand stain-resistant, non-slip surface. Do not use
the spa on rough or sharp surfaces such as gravel
or wood chips.
5. Make sure that the location you choose is stable. It
must be able to support the weight of the spa
when it is filled with water, plus the weight of the
occupants. The spa weighs approximately 2,750
pounds when it is filled with water.
6. Consider environmental factors such as rain, wind,
shade, sunlight, and so forth.
6. Do not use the spa above a finished living area,
due to the risk of water damage.
7. Make sure that there is room around the spa to
permit servicing of the unit. The dimensions of the
spa are 80” W x 76” L x 36”H. You should allow for
this size when choosing the location.
8. The spa is not designed for in-floor installation.
However, it is compatible with a deck system that
is built flush with the top of the spa, provided you
leave access to the motor for service.
9. Make sure to note any other considerations, such
as aesthetics or privacy concerns, that may affect
the safety or enjoyment of using the spa.
7. You should be able to monitor the use of the spa
from your home, to prevent unauthorized use by
children. You may want to enclose the spa with a
fence and self-latching gate to prevent unauthorized use.
8. Make sure that there is room around the spa to
permit servicing of the unit. The dimensions of the
spa are 80” W x 76” L x 36”H. You should allow for
this size when choosing the location.
9. The spa is not designed to be installed below
ground level. However, it is compatible with a deck
system that is built flush with the top of the spa,
provided you leave access to the motor for service.
10.Make sure to note any other considerations, such
as aesthetics or privacy concerns, that may affect
the safety or enjoyment of using the spa.
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Assembly
Before beginning assembly, carefully read the
following information and instructions:
• Place all parts in a cleared area and remove the
packing materials from the spa shell. Do not dispose of the packing materials until assembly is
completed and the spa is operating.
• During assembly, make sure that all parts are
oriented as shown in the drawings.
• Read each assembly step before you begin.
• Tighten all parts as you assemble them, unless
instructed to do otherwise.
1. Before beginning assembly, make sure that you
have read and understand the information in the
box above and on the previous two pages.
Remove the eight #10 x 2” Sheet Metal Screws (7)
from the indicated Access Panels (2, 5). Remove the
Access Panels by sliding them down and then pulling
the bottoms of the Access Panels away from the spa.
Be careful not to damage the spa shell.
ASSEMBLY REQUIRES THE FOLLOWING
TOOLS (not included):
• One (1) phillips screwdriver
• You may also need a small amount of soapy
water.
A wire connector is provided on the electronics
pack of the spa to connect a minimum No. 6
AWG solid copper conductor between the spa
and any metal equipment, electrical enclosure
made of metal, metal water pipes, or conduit
within five feet of the spa.
1
Spa Shell
Pillow
Pillow
Spa Shell
Pillow
If desired, snap the three pillows onto the spa shell.
Each pillow can be attached in either a high position
or a low position. To determine the desired position,
attach a pillow to the spa shell, note its position,
remove it, turn it 180°, and then reattach it.
2. See the drawing on page 6 and locate the short
access opening. Next, locate the indicated gate
valves inside the short access opening. Make sure
that the gate valves are open and that the locking
clips are snapped onto the stems of the gate valves,
as shown in the inset drawing.
Make sure that the four collars are tightened.
See step 1 above. Re-attach the Short Access Panel
(2) to the spa with four #10 x 2” Sheet Metal Screws
(7).
2
Gate Valve
5
7
Locking
Clip
2
7
Gate Valve
Collars
Stem
Gate Valve
8
Page 9
3. See the drawing on page 6 and locate the long
access opening. Next, locate the two indicated gate
valves inside the opening. Make sure that the gate
valves are open and that the locking clips are
snapped onto the stems of the gate valves (see the
inset drawing in step 2 on page 8).
Make sure that the indicated collars are tightened.
3
Gate
Valve
Electronics Pack
Locate the drain hose inside the opening. Close the
valve knob on top of the drain hose and make sure
that the cap is fully tightened.
4. The hydrotherapy spa operates on a 240-volt power source and must be wired directly to a 40 amp Ground
Fault Circuit Interrupter (GFCI) installed in your home.
electrician. A wiring diagram is found on the inside of the electronics pack as a reference. Under no
circumstances should the spa be wired by someone other than a qualified electrician. Before you
have the spa wired, make sure that it is in the position you want and that it can be easily serviced, if needed.
5. Remove the two warning decals (not shown) from
the spa shell. Using a damp cloth, wipe the spa shell
clean. Before filling the spa, make sure that it is
in the desired position and that there is room to
service the spa. Once the spa is filled, it will
have to be drained before it can be moved.
Remove the Filter Cover (8), the Basket (17), and
the Filter Cartridge (16) from the filter housing.
Insert a garden hose into the filter housing and fill
the spa.
filled with cold water; however, if warm or hot water
is used, the spa will be ready for use sooner. Fill the
spa until the water is at the middle of the skimmer.
not overfill the spa.
Do not use soft water. The spa can be
Do
Collars
Drain
Hose
This procedure must be performed by a qualified
5
Fill to the
middle of
the skimmer
Valve
Knob
Filter
Housing
Collars
Cap
Gate
Valve
8
17
16
Filter
Housing
Insert the Filter Cartridge (16) and the Basket (17)
into the filter housing. Cover the filter housing with
the Filter Cover (8).
6. Pull down one of the straps on the Spa Cover (11)
and hold the Buckle (30) against one of the cedar
panels on the spa. (Note: To position the Buckle correctly, have a second person hold the strap on the
opposite side of the Spa Cover tight.)
Cover must be tight. Do not place the Buckle
over the grooves between the cedar slats.
inset drawing. Remove the latch from the Buckle
(30). Attach the Buckle to the cedar panel with two #4
x 3/4” Screws (31).
Attach the other three Buckles (30) to the cedar panels in the same way.
Remove the Spa Cover (11) from the spa.
The Spa
See the
6
Strap
11
Latch
30
31
Strap
30
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Using the Hydrotherapy Spa
The hydrotherapy spa is designed to seat six adults.
The spa holds 295 gallons of water and offers a heating system (80°F to 104°F), a filtration system, and
adjustable hydrotherapy jets. Follow the guidelines
below to use and maintain the spa for your long-term
enjoyment.
WIRING THE HYDROTHERAPY SPA
The hydrotherapy spa is designed to operate with a
240-volt power source. It must be wired directly into a
grounded circuit with a Ground Fault Circuit
Interrupter (GFCI) capable of carrying 40 amps. No
other appliance should be on the same circuit.
Connection of the spa to the 240-volt power
source must be performed by a qualified, licensed
electrician and must comply with all local, state,
and federal electrical codes.
tions on the inside of the electronics package for information about connecting the spa to a 240-volt power
source.
Once the spa is filled with water, the power can be
turned on. Note: The first time the power is turned on,
the spa will start automatically.
TESTING AND TREATING THE WATER
The first time you use the spa, you should test and
treat the water. You must also treat the water each
time you refill the spa.
pack are available at your local pool and spa supplier.
Follow the directions carefully on the chemical pack to
test and treat the water.
away from children and pets. See WATER CHEMISTRY on page 14 for information concerning proper
water maintenance.
Please see the instruc-
A test strip and a chemical
Always keep the chemicals
Once you have tested the GFCI, you should verify the
water flow from the pumping unit. Set the air control
on the console to the lowest setting (see USING THE
CONTROLS on page 12). The pumping unit will heat
the water as it pumps. Cover the hydrotherapy spa
with the spa cover.
(see SECURING THE SPA COVER ON THE SPA on
this page). The water will heat at about 6°F per hour
with the cover on. If you are using the spa indoors,
and the room temperature is maintained at 70°F, it will
take approximately 6 to 8 hours for the water to reach
the set temperature.
The temperature and the water flow can be set or
changed with the controls on the console (see USING
THE CONTROLS on page 12).
SECURING THE SPA COVER ON THE SPA
To secure the spa cover,
snap the latches on the spa
cover into the buckles on the
cedar panels.
To lock the buckles, insert
the key and turn it clockwise 1/4 turn. To unlock the
buckles, insert the key and
turn it counterclockwise 1/4
Always keep the
turn.
buckles locked when the
spa is not in use. Keep the keys in a safe place,
out of the reach of children.
The spa cover must be tight
Latch
Key
Buckle
STARTING THE HYDROTHERAPY SPA
You should always test the GFCI before using the
hydrotherapy spa. First, turn on the spa by pressing
the jet button on the console (see USING THE CONTROLS on page 12). Once the spa is running, press
the GFCI “test” button. The spa should shut off. Press
the “reset” button. The spa should resume normal
operation. If the spa continues to run after the “test”
button is pressed, the GFCI is damaged. Do not use
the spa until the GFCI has been repaired or replaced
by a qualified electrician.
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Page 11
Jet Layout Diagram
D
A
C
D
D
A
D
L
L
L
D
K
F
E
G
H
I
A. The seven adjustable, directional jets can be piv-
oted to direct their water flow.
B. The
C. The
D. The fifteen
E. The
adjustable, pulsing jet produces a soothing,
pulsating massage action.
large rotary jet features two jets of water that
provide a pulsating, spinning massage action.
whirly jets provide a continuous
whirling massage action.
volcano jet provides a powerful foot massage.
D
A
B
D
A
D
J
I. The
J. The
K. The four
L. The nine small adjustable, directional jets can be
temperature probe monitors water temperature.
underwater light can be used for night opera-
tion (see USING THE CONTROLS on page 12).
bring water into the pumps in order to operate the
system. Never operate the spa without the suc-
tion covers in place.
pivoted to direct their water flow.
A
suction vents near the floor of the spa
F. The four
G. An optional ozone generator can be purchased and
installed to utilize the
tize the spa with minimal chemical treatment.
H. The
fixed jets are always on.
ozone jet. Ozone helps sani-
skimmer cleans the surface of the water.
Note: To open the adjustable jets, turn the rims
counterclockwise; to close the jets, turn the rims
clockwise. If no air flows through the jets, turn the
jets counterclockwise. Close the jets to increase
the water pressure to other jets.
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Page 12
Using the Controls
Air Controls 1, 2, and 3
Display Invert Button: Turns the display 180°, allowing it to be read from inside or outside of the spa.
A
B
A
Display
Invert Button
Pump
Button 1
flowing through the jets will increase; if the control is
turned clockwise, the amount of air will decrease.
Pump Button 1: Turns the spa jets labeled A (at the
left) on and off. If the button is pressed once, the jets
will run, providing gentle hydrotherapy. If the button is
pressed again, the jets will shut off.
Pump Button 2: Turns the spa jets labeled B and C
(at the left) on and off. If the button is pressed once,
the jets will run, providing soothing hydrotherapy. If
the button is pressed again, the jets will shut off.
Pump
Button 2
Light
Button
Display
Temperature
Buttons
C
Air Control 1: Determines the amount of air flowing
through the hydrotherapy jets labeled A (above). If the
control is turned counterclockwise, the amount of air
flowing through the jets will increase; if the control is
turned clockwise, the amount of air will decrease.
Air Control 2: Determines the amount of air flowing
through the hydrotherapy jets labeled B (above). If the
control is turned counterclockwise, the amount of air
flowing through the jets will increase; if the control is
turned clockwise, the amount of air will decrease.
Air Control 3: Determines the amount of air flowing
through the hydrotherapy jet labeled C (above). If the
control is turned counterclockwise, the amount of air
A
B
The spa also features an automatic mode that heats
and filters the water when the spa is left unattended.
When the power to the spa is first turned on, or if the
water temperature is below the set temperature, the
water will be heated as required to maintain the set
temperature.
cycles from running, the power to the spa must be
turned off.
Light Button:
Temperature Buttons: Control the temperature setting
of the water. The temperature setting can be from
80°F to 104°F. The water heats at about 6°F per hour
with the cover on. Use a medical or other accurate
thermometer to check the temperature of the water.
Note: The word “COOL” will appear in the console
display if the temperature of the water is more than
20°F cooler than the set temperature. When this happens, the heater will automatically activate to warm the
water. The word “ICE” will appear in the display if the
temperature drops below 40°F. If this happens, the
pump will automatically circulate the water and warm
the plumbing to keep the water from freezing.
Note: To keep the filter and heat
Turns the underwater light on and off.
12
Page 13
Maintenance
The hydrotherapy spa is designed to provide years of
enjoyment. Please follow the guidelines below to
properly maintain your spa.
MAINTENANCE SCHEDULE
Daily
• Check the water level and refill the spa to the level
shown in step 5 on page 9.
• Check the pH balance and sanitizer level. Adjust if
necessary (see WATER CHEMISTRY on page 14).
Weekly
• Clean the spa shell at the waterline.
• Check and thoroughly clean the filter (see CHECKING AND CLEANING THE FILTER on this page).
• Replace the filter if needed (see ORDERING
REPLACEMENT PARTS on the back cover).
Monthly
• Clean the spa cover (see MAINTAINING THE SPA
COVER on this page).
• Soak the filter for two hours in a trisodium phosphate (TSP) solution. Rinse the filter in clean water.
• Replace the filter if needed (see ORDERING
REPLACEMENT PARTS on the back cover).
Every Three Months
• Drain the spa and refill it with clean water. Sanitize
and test the pH of the water.
• Check for any leaks around the pump or joints in
the pipes. The seals will wear out over time; detecting leaks early can reduce repair costs.
• Clean the interior of the spa. Do not use solvents or
waxes.
MAINTAINING THE SPA EXTERIOR
The surround is maintenance free. It does not need to
be painted or stained. Clean the surround with a mild
soap solution; do not use solvents or waxes.
CLEANING THE SPA SHELL
The spa shell should be cleaned with a mild soap
solution; do not use solvents or waxes. The spa
should always be clean and dry before being moved
or stored.
MAINTAINING THE SPA COVER
The spa cover should be cleaned monthly. To clean
the spa cover, use water and a non-abrasive cleaner
on the entire cover. Rinse the cover with a garden
hose to remove any cleaner residue. Dry the cover
entirely. Use a non-silicone-based vinyl conditioner on
the cover after you clean it. This will help protect the
cover from sun damage.
SANITIZING THE HYDROTHERAPY SPA
Please see your local pool and spa supplier for information concerning which chemicals you should use in
your area to sanitize the spa.
The most common sanitizing agent is a solid bromine
concentrate. The amount required varies according to
several factors, such as user load, temperature, water
conditions etc. Proper water maintenance is a fairly
complex process. We recommend that you contact
your local pool and spa supplier for information on
how you should best accomplish this.
CHECKING AND CLEANING THE FILTER
The filter should be checked periodically for build-up
of dirt and oil. If the filter needs to be cleaned, follow
the steps below:
1. Turn off the power.
2. Remove the filter
cover.
3. Remove basket and
filter cartridge from
the filter housing.
4. Check the filter cartridge for dirt and
debris. If the cartridge needs to be
cleaned, rinse it with
a hose. If the cartridge is still dirty,
soak it in cleaning
solution from a pool
and spa supply store.
5. Inspect the filter cartridge for damage. Replace the cartridge if it is
damaged.
6. Insert the cleaned or new filter cartridge and basket into the filter housing.
7. Re-attach the filter cover.
Filter
Cover
Basket
Filter
Cartridge
Filter
Housing
13
Page 14
WATER CHEMISTRY
ATTACHING AND REMOVING ACCESS PANELS
CAUTION: The chemicals used to maintain the pH
balance of the water and to sanitize the water can
be dangerous. Always follow these basic guidelines when handling the chemicals:
1. Always read and follow the directions on the
label, unless directed otherwise.
2. Never mix different chemicals.
3. Do not exceed the recommended amounts of
chemicals—follow the directions on the label
closely.
4. Keep all chemicals out of the reach of children
and pets.
5. Keep containers closed tightly when not in use.
6. Never add water to the chemicals—always add
the chemicals to the water as directed.
7. Always store chemicals in a cool, dry place.
MAINTAINING THE PROPER PH BALANCE
The pH factor is a measure of the relative acidity or
alkalinity in the water, and is measured on a scale of
1 to 14. Pure water has a value of 7, which is neutral.
Any value above 7 is alkaline, and any value below 7
is acidic. You should maintain a slightly alkaline pH
level, between 7.2 and 7.8, in the hydrotherapy spa.
Severe problems can occur when the pH balance is
not maintained within this range. If the pH level
exceeds 7.8, dissolved minerals can build up and clog
the plumbing in the spa jet unit. If the pH level falls
below 7.2, the acid level in the water will begin to corrode the metal parts in the spa jet unit. Also, the sanitation agents in the water will not be effective if the pH
level is not properly maintained. Damage caused by
improper pH levels is not covered under the warranty.
To maintain the proper pH level, you should test the
pH of the water regularly. To test the water, purchase
a pH test kit at a pool and spa supply store. The pH
reading should be between 7.2 and 7.8. If the level is
too low, add a pH increaser (usually soda ash). If the
level is too high, add a pH reducer (usually sodium
bisulfate). Test the water again after five minutes. See
the instructions with your pH test kit for additional
information about testing and adjusting the pH.
CHANGING THE FILTER CYCLE
The spa will filter the water every 12 hours. The duration of the cycle can be adjusted to last 2 to 5 hours.
Press the temp up or temp down button on the console. When the display begins to flash, press the
pump 1 button. The display will read F2. To change
the time, press the temp up button until the desired
time is reached. Press the pump 1 button to confirm
the selection. As spa usage increases, the duration of
the filter cycle may need to be increased.
To locate the access panels, see the drawing on page
6. Turn off the spa power. To remove an access
panel, first remove the four indicated screws. Slide
the access panel down and then pull the bottom of it
away from the spa.
the spa shell as you remove the access panel.
To replace the access panel, insert the top of the
access panel under the edge of the spa shell. Slide
the cover up until the bottom of the access panel
clears the trim along the bottom of the spa. Then,
slide the access panel into place and re-attach the
four screws.
DRAINING THE HYDROTHERAPY SPA
The hydrotherapy spa should be drained at least four
times a year and refilled with clean water. You may
need to drain the spa more often, depending on the
user load. This must be done because after repeated
chemical treatment the water becomes chemically
saturated. Once this happens, additional chemical
treatment of the water is no longer effective. The spa
should also be drained if you will not be using it for
long periods of time. The spa must always be drained
before major repairs are made.
The hydrotherapy spa should always be covered
when it is empty. Direct sunlight can cause extensive damage. The surface of the spa shell can
reach temperatures as high as 150°F in a matter
of minutes if exposed to the sun while it is empty.
These high temperatures can cause significant
damage, such as blistering of the shell surface
and warping of the spa shell. Any damage caused
by sun exposure is not covered under warranty.
Note: Be careful not to damage
Screws
Access
Panel
Screws
14
Page 15
To drain the hydrotherapy spa, follow the steps below:
WINTER USE AND CARE
1. Using the console, adjust the temperature to the
lowest setting.
2. Shut off the power to the spa, at the circuit breaker
or GFCI.
3. Remove the pump access panel from the spa.
4. Remove the end of the drain hose from the spa.
Remove the cap and attach a garden hose to the
drain hose.
Drain
Hose
5. Open the valve by turning the valve knob. The
water will begin to drain.
6. When the spa is empty, close the valve and
remove the garden hose. Re-attach the cap and
return the drain hose to the clip inside the spa.
7. Re-attach the access panel.
8. Refill the spa and treat the water with chemicals
(see pages 10 and 14).
DRAINING THE PUMPS
After the hydrotherapy
spa is drained (see
DRAINING THE
HYDROTHERAPY SPA
on page 14), the jet
pumps should also be
drained if the
hydrotherapy spa will
be stored for more than
thirty days or if it may
be exposed to freezing temperatures.
Valve
Knob
Drain Plug
Cap
The hydrotherapy spa is designed for year-round use.
If you decide to store the spa for the winter, store it in
a warm, dry location. Follow the steps below to winterize the spa.
1. Make sure the power to the spa is turned off.
2. Drain the spa (see DRAINING THE HYDROTHERAPY SPA on the previous page and this page).
3. Remove all remaining water from the spa shell. Dry
the spa shell with towels.
4. Set the air control to the lowest setting. Use a
wet/dry vacuum to pull any remaining water from
the system. To do this, place the vacuum nozzle
over each jet, starting with the highest jet and finishing with the lowest jet.
5. Set the air control on the console to the highest
setting and repeat step 3.
6. Drain the pumps (see DRAINING THE PUMPS on
this page). Once the water is drained from the
pumps, place the vacuum nozzle over the drainage
hole in the pumps and vacuum any additional
water from the pumps.
tection, remove the pump/motors from the spa
and store them in a climate-controlled room.
7. Clean the spa shell (see page 13).
8. Clean the filter (see page 13).
9. A licensed, qualified electrician should disconnect
the power from the 240-volt power source.
10. Re-attach the access panel and the spa cover.
REPLACING THE LIGHT BULB
If the underwater light burns out, you will need to
remove the pump access panel to replace it (see
ATTACHING AND REMOVING THE ACCESS PANEL
on page 14). Make sure the spa power is turned off.
Next, locate the light housing. Turn the light housing
counterclockwise and remove it from the spa shell.
Light Housing
Note: For additional pro-
Light
Bulb
Light
Housing
Turn off the power to the spa. To drain the jet pumps,
remove the access panel from the spa unit (see
ATTACHING AND REMOVING THE ACCESS PANEL
on page 14). Locate the jet pumps inside the spa unit.
Remove the drain plugs from the jet pumps and allow
all water to drain out. Replace the drain plugs.
To replace the light bulb, pull the old light bulb out of
the housing and insert a new light bulb. Re-attach the
light housing to the spa shell. Re-attach the access
panel to the spa.
15
Page 16
Troubleshooting
Most problems can be solved by following the simple steps below. Find the symptom that applies, and
follow the steps listed. If further assistance is needed, call our Customer Service Department toll-free at
1-877-897-7493, Monday through Friday, 8 a.m. until 5 p.m. Central Time.
1. SYMPTOM: THE SPA WILL NOT OPERATE
a. Check to see if the GFCI breaker is tripped or
was not turned on. Reset the GFCI breaker.
2. SYMPTOM: THE CIRCUIT BREAKER OR THE
GFCI TRIPS WHILE THE SPA IS OPERATING
a. Reset the circuit breaker or the GFCI. If the cir-
cuit breaker or the GFCI trips again, contact a
qualified electrician for service.
3. SYMPTOM: THE PUMP HUMS
a. The filter may be dirty or damaged. Remove
the filter from the filter housing and clean or
replace the filter (see page 13).
b. The pump may have a foreign object stuck in
the impeller. Contact our customer service
department.
c. The pump may have a loose wire connection.
Contact our customer service department.
4. SYMPTOM: THE PUMP HUMS, BUT DOES NOT
ROTATE
indoors and the room temperature is maintained at 70°F, it will take approximately 6 to 8
hours for the water to reach the set temperature.
b. If you are using the hydrotherapy spa outdoors,
it may take longer for the water to heat. See
the chart below for the approximate heating
time.
Air
Temperature Heating Time
70°F + 6 to 8 hours
50°F–70°F 9 to 11 hours
30°F–50°F 12 to 14 hours
b. If the water still has not heated after 24 hours,
contact our customer service department.
7. SYMPTOM: THE WATER IS NOT BEING
CLEANED BY THE FILTER
a. Check to see if the filter is in place. Clean the
filter if it is dirty.
b. Check the chemical balance of the water. If the
pH is incorrect, the sanitizing agents will not
function properly.
a. The pump may be jammed. Contact our cus-
tomer service department. If your spa is no
longer under warranty, contact a local spa and
pool service provider.
5. SYMPTOM: THE PUMP IS NOISY WHILE
OPERATING
a. There may be debris in the pump. Contact our
customer service department.
b. The pump may have a bad bearing. Contact
our customer service department.
6. SYMPTOM: THE WATER DOES NOT HEAT
a. Make sure that the hydrotherapy spa is fully
covered with the spa cover.
must be tight for the water to heat. Set the
air control to low. The water will heat at a rate
of 6°F per hour. If you are using the spa
The spa cover
8. SYMPTOM: THE WATER PULSATES OR
THERE IS MINIMUM WATER FLOW
a. This usually occurs only when the water level is
low. Add water until it is 2”–4” above the skimmer basket.
b. The filter cover may not be tight. Make sure the
filter cover is tight.
c. The skimmer basket may not be seated proper-
ly. The top of the basket must be flush with the
bottom of the weir door.
9. SYMPTOM: THE WATER LEVEL DROPS
a. Some water loss due to evaporation is normal.
If rapid water loss occurs, or if you notice wetness on the floor around the hydrotherapy spa,
the spa shell may have a leak. Contact your
local pool and spa service provider for repairs.
16
Page 17
b. A clamp or seal inside the pump compartment
may be loose. Check inside the pump compartment for excess water and watch the pump unit
while it is operating to see if water drips from
any of the plumbing. If you can identify the
location of the leak inside the spa jet unit, tighten the clamp or replace the damaged seal.
10. SYMPTOM: THE SPA JET UNIT CONTINUES
TO RUN AFTER IT HAS BEEN SHUT OFF
a. To turn the main jets off, press the pump button
once. NOTE: If the actual spa water temperature is below the set temperature, or if the spa
is running a filter cycle, the heater pump/motor
will not shut off.
11. SYMPTOM: NO AIR FLOWS THROUGH THE
ADJUSTABLE HYDROTHERAPY JETS WHEN
THE AIR CONTROL IS TURNED COUNTERCLOCKWISE
a. The eighteen adjustable hydrotherapy jets can
be closed and opened by turning the jet faces. If
no air flows through the hydrotherapy jets when
the air control is turned counterclockwise, turn
the jet faces counter clockwise.
12. SYMPTOM: THE CONSOLE DISPLAYS THE
WORDS “COOL” OR “ICE”
a. This is a normal function of the spa; no action
is necessary. The word “COOL” will appear in
the display if the temperature of the water is
more than 20°F cooler than the set temperature. If this happens, the heater will automatically activate to warm the water. The word
“ICE” will appear if the temperature drops
below 40°F. If this happens, the pump will automatically circulate the water and warm the
plumbing.
13. SYMPTOM: THE CONSOLE DISPLAYS ONE OF
THE FOLLOWING MESSAGES: “OH,” “5n1,”
“5n3,” “FLO,” “Pd,” “O3,” “PH50,” “PH90,” or
“ILOC”
a. If the console displays one of the messages
listed above, or if the console does not function
properly, contact our customer service department.
17
Page 18
Part List—Model No. WLSB63940
45
46
15*
16
17
8
47
33
Key No. Qty. Description Key No. Qty. Description
R1203A
1 1 Thermometer Fitting
2 2 Access Panel
3 1 Volcano Jet
4 1 Two-speed Motor/Pump*
5 2 Short Panel
6 1 Rotator
7 32 #10 x 2” Sheet Metal Screw
8 1 Filter Cover
9 4 #10 x 1 1/2” Sheet Metal Screw
10 1 Two-speed Motor Power Cord
11 1 Spa Cover
12 15 Pivot Ring
13 4 Jet Pump/Motor O-ring
14 1 Console with Overlay
15 1 Skimmer Housing*
16 1 Filter Cartridge
17 1 Basket Assembly
18 4 Suction Cover Assembly
19 2 Heater Gasket
20 1 One-speed Motor/Pump*
21 1 One-speed Motor Power Cord
22 2 Rubber Isolator Pad
23 8 Rubber Washer
24 12 1/4” Washer
25 4 Corner Panel
26 9 Medium Nozzle
27 2 Drain Plug
28 2 Drain Plug O-ring
29 1 Cover Ring
30 4 Buckle
31 8 #4 x 3/4” Screw
32 9 Medium Jet Housing
33 1 Face Plate
34 3 Air Control Knob
35 9 Nozzle Housing
36 15 Small Rotator
37 1 Large Rotary Jet
38 5 Face Ring
39 5 Small Nozzle
40 20 Jet Ring
41 5 Nozzle Bushing
42 7 Nozzle Retainer Ring
43 7 Flared Nozzle
44 8 Jet Housing
45 1 Light Cover, Red
46 1 Light Cover, Blue
47 1 Filter Door
48 1 Electronics Pack*
49 1 Overlay
50 8 1/4” x 1 1/2” Screw
51 8 1/4” Lock Washer
52 2 Collar With Screw
# 2 Ground Wire
# 2 Key
# 1 User’s Manual
# 1 Large Warning Sign
# 1 Warning Sign
# 1 Light Bulb
# 2 Motor Mount Board*
# 3 Pillow
* Indicates a part that is serviceable only by service
technicians.
# Indicates a non-illustrated part.
Specifications are subject to change without notice.
18
Page 19
37
1
30
31
27
28
13
4*
50
11
7
2
7
5
25
25
25
10
9
9
3
24
13
27
28
13
20*
50
24
13
21
19
19
44
32
36
12
26
35
6
29
43
42
39
38
40
41
22
22
40
44
34
48*
52
52
18
18
18
18
24
51
51
23
23
23
23
24
51
51
14
49
24
9
24
24
Exploded Drawing—Model No. WLSB63940
R1203A
19
Page 20
Ordering Replacement Parts
To order replacement parts, simply call our Customer Service Department toll-free at 1-877-897-7493, Monday
through Friday, 8 a.m. until 5 p.m. Central Time (excluding holidays). To help us assist you, please be prepared
to give the following information when calling:
• The MODEL NUMBER of the product (WLSB63940)
®
• The NAME of the product (WESLO
• The SERIAL NUMBER of the product (see the front cover of this manual)
• The KEY NUMBER and DESCRIPTION of the desired part(s) (see the PART LIST and the EXPLODED DRAWING on pages 18 and 19)
KEY LARGO hydrotherapy spa)
Limited Warranty
ICON Health & Fitness, Inc. (ICON), warrants this product to be free from defects in workmanship and material, under normal use and service conditions, for a period of ninety (90) days from the date of purchase. ICON
extends a limited five (5) year warranty on the spa shell structure. ICON extends a limited two (2) year warranty on the pump, motor, and electronics package. This warranty extends only to the original purchaser.
ICON's obligation under this warranty is limited to replacing or repairing, at ICON's option, the product through
one of its authorized service centers. All repairs for which warranty claims are made must be pre-authorized
by ICON. This warranty does not extend to any product or damage to a product caused by or attributable to
freight damage, abuse, misuse, improper or abnormal usage, or repairs not provided by ICON authorized service personnel; to products used for commercial or rental purposes; or to products used as store display models. Specifically excluded are damages caused by or attributable to the following incidents: any damage to the
surround or steel frame attributable to improper handling or freight damage; damage resulting from improper
winterization; damage to the spa shell resulting from improper chemical treatment, damage to the spa shell
resulting from exposure to extreme temperatures, or damage to the spa shell resulting from exposure to direct
sunlight and ultraviolet rays while the spa is empty; damage to the pump, motor, plumbing, and components
due to improper maintenance, chemical treatment, or exposure; or damage resulting from failure to properly
follow user’s manual installation, operating, or maintenance instructions. Also excluded are consumable components, including but not restricted to filter cartridges. No other warranty beyond that specifically set forth
above is authorized by ICON.
ICON is not responsible or liable for indirect, special or consequential damages arising out of or in connection
with the use or performance of the product or damages with respect to any economic loss, loss of or damage
to property including water damage, loss of revenues or profits, loss of enjoyment or use, costs of removal,
installation or other consequential damages of whatsoever nature. Some states do not allow the exclusion or
limitation of incidental or consequential damages. Accordingly, the above limitation may not apply to you.
The warranty extended hereunder is in lieu of any and all other warranties and any implied warranties of merchantability or fitness for a particular purpose is limited in its scope and duration to the terms set forth herein.
Some states do not allow limitations on how long an implied warranty lasts. Accordingly, the above limitation
may not apply to you.
This warranty gives you specific legal rights. You may also have other rights which vary from state to state.
ICON HEALTH & FITNESS, INC., 1500 S. 1000 W., LOGAN, UT 84321-9813
Part No. 206445 R1203A Printed in USA © 2003 ICON Health & Fitness, Inc.
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