Legacy Whirlpool LW 524, LW INSPIRE, LW 730L, LW 715, LW INTREPID Owner's Manual

A HERITAGE OF QUALITY.

OWNER’S MANUAL

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MASTER SPAS OWNER’S MANUAL

Welcome To Ultimate Relaxation!

Thank you for choosing your new spa built by Master Spas. Please read the entire Owner’s Manual
before installing and using your spa. The goal of this manual is to provide you with safety and
operational information plus some tips that will help you enjoy your spa to its fullest.

At the time of print, this manual is accurate in its information. Master Spas reserves the
right to change or improve its product without prior notice. Please visit www.masterspas.com
to check for product information updates and click the Resources link on the page to review
support information.

Record Of Ownership

Name ��������������������������������������������������������������������������������

Address ������������������������������������������������������������������������������

City ��������������������������������������������������������� State ������ Zip ���������

Phone # (������)��������-���������� Date Purchased ������ /������ /�������

Model ��������������������������������� Serial # ���������������������������������������

Dealer Name �������������������������������������������������������������������������

Service Tech Rep ����������������������������������������������������������������������

Serial Number Location

The serial number for your spa is located near the filter area, on the spa system pack, or on the
listing plate on the spa frame behind the front skirt panel. It is a seven digit number on most
models with the exception of Getaway Hot Tub models. Getaway Hot Tub models start with “R”
followed by 6 digits. Ex. 1812345 or R181234

Register Your Spa

Please be sure to register your spa so we can efficiently assist with any questions you may have.
Until your spa has been registered, Master Spas will not have record of your ownership.

To register your spa, visit www.MasterSpas.com and click the Resources link on the page.
This area will offer Spa Registration capability along with other support information.

6927 Lincoln Parkway

Fort Wayne, Indiana 46804

www.masterspas.com

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TABLE OF CONTENTS

Record of Ownership .............................................................................................................. 1

Table of Contents

................................................................................................................... 2

Safety Instructions

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

Compliance

.......................................................................................................................... 11

VGB Suction Safety & Maintenance Instructions

............................................................... 12-13

Glossary of Spa Terminology

........................................................................................... 14-16

The Advantages of EcoPur

®

Filtration .................................................................................... 17

Water Chemistry Terms You Should Know

....................................................................... 18-19

Why Are Chemicals Important in a Spa

................................................................................. 20

Water Maintenance

......................................................................................................... 21-24

Start-Up ........................................................................................................................ 21

Schedule .................................................................................................................. 22-23

Troubleshooting Guide .................................................................................................. 24

Regular Maintenance Procedures

..................................................................................... 25-30

Spa Troubleshooting Guide

............................................................................................. 31-32

Winterizing & Storing Your Spa

............................................................................................ 33

Model Specifications

............................................................................................................ 34

Installation Instructions

................................................................................................... 35-43

Site Preparation / General Guidelines ....................................................................... 35-37

Electrical Requirements ............................................................................................ 38-41

Configuration 1 ................................................................................................ 38-39

Configuration 2 ................................................................................................ 40-41

Initial Spa Setup ...................................................................................................... 42-43

Operating Instructions

..................................................................................................... 44-68

Spa Controls - 120V Models ..................................................................................... 44-47

Spa Controls - MP30 Models .................................................................................... 48-57

Spa Controls - Pump Control Diagrams ..................................................................... 58-63

Fusion Air Sound System (if equipped) ..................................................................... 64-68

Wi-Fi Module (if equipped)

................................................................................................... 69

Spa Care & Maintenance Record

...................................................................................... 70-72

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SAFETY INSTRUCTIONS

SAVE THESE INSTRUCTIONS

Included with your new spa is a safety sign. The sign is for you and your guest’s protection

and is suitable for outdoor use in wet locations. The sign should be placed in a location visible
to all users of the spa.

Please take time to point out the physical location of the safety sign and the importance of

the safety precautions displayed on the safety sign to all of your guests. Remember, your safety
and the safety of anyone who enjoys the use of your spa is our utmost concern.

The sign should be mounted with screws or another type of permanent fastener. Additional

or replacement signs can be obtained from your dealer or direct from the factory.

INTRODUCTION

It’s time to relax! You now have your very own portable spa by Master Spas. By fully understanding
the operation of each of the features of your new Master Spa, you will be assured of many years
of hassle-free, hot water therapy and fun.

Your safety is of paramount importance to the Master Spas family. We urge you to read and
become thoroughly familiar with all safety aspects addressed in this manual.

Through reading and totally understanding the important information in your owner’s manual, you
will realize that you now own THE ULTIMATE RELAXATION MACHINE!

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SAFETY INSTRUCTIONS

IMPORTANT SAFETY INSTRUCTIONS

When installing and using this electrical equipment, basic safety precautions should
be observed including the following:

READ AND FOLLOW ALL
INSTRUCTIONS

WARNING – To reduce the risk of injury, do not permit children to use this product
unless they are closely supervised at all times.

A wire conductor is provided on this unit to connect a minimum 6 AWG
(13.302mm

2

) solid copper conductor between this unit and any metal equipment,
metal enclosures of electrical equipment, metal water pipe, or conduit within 5 feet
(1.5m) of the unit.

(For cord-connected/convertible units)
DANGER – Risk of injury.
a) Replace damaged cord immediately.
b) Do not bury cord.
c) Connect to a grounded, grounding type receptacle only.

(For units intended for indoor use only)
WARNING – For indoor use only. This unit is not intended for outdoor use.

(For units intended for outdoor use only)
WARNING – For outdoor use only. This unit is not intended for indoor use.

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SAFETY INSTRUCTIONS

IMPORTANT SAFETY
INSTRUCTIONS (CONT.)

(For units with GFCI)
WARNING – This product is provided with a ground-fault circuit interrupter

located on the front panel of selected swim spas and on the power cord of
120 volt convertible spas. The GFCI must be tested before each use. With
the product operating, open the service door. When the product stops
operating, this merely indicates that the door is equipped with an electrical
interlock. Next, push the test button on the GFCI and close the service door.
The product should not operate. Now open the service door, push the reset
button on the GFCI and close the service door. The product should now
operate normally. When the product fails to operate in this manner, there
is a ground current flowing indicating the possibility of an electric shock.
Disconnect the power until the fault has been identified and corrected.

DANGER – Risk of Accidental Drowning. Extreme caution must be exercised to
prevent unauthorized access by children. To avoid accidents, ensure that children
cannot use this spa unless they are supervised at all times.

DANGER – Risk of Injury. The suction fittings in this spa are sized to match the
specific water flow created by the pump. Should the need arise to replace the
suction fittings or the pump, be sure that the flow rates are compatible.

Never operate spa if the suction fittings are broken or missing. Never replace a
suction fitting with one rated less than the flow rate marked on the original suction
fitting.

DANGER – Risk of Electric Shock. Install at least 5 feet (1.5m) from all metal
surfaces. As an alternative, a spa may be installed within 5 feet of metal surfaces if
each metal surface is permanently connected by a minimum 8AWG (8.4mm

2

) solid
copper conductor to the wire connector on the terminal box that is provided for
this purpose.

DANGER – Risk of Electric Shock. Do not permit any electric appliance, such as a
light, telephone, radio, or television, within 5 feet (1.5 m) of a spa.

WARNING – To reduce the risk of injury:

a) The water in a spa should never exceed 104˚F (40˚C). Water temperatures

between 100˚F (38˚C) and 104˚F (40˚C) are considered safe for a healthy
adult. Lower water temperatures are recommended for young children and
when spa use exceeds 10 minutes.

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SAFETY INSTRUCTIONS

IMPORTANT SAFETY
INSTRUCTIONS (CONT.)

b) Since excessive water temperatures have a high potential for causing

fetal damage during the early months of pregnancy, pregnant or possibly
pregnant women should limit spa water temperatures to 100˚F (38˚C).

c) Before entering a spa, the user should measure the water temperature

with an accurate thermometer since the tolerance of water temperature­regulating devices varies.

d) The use of alcohol, drugs, or medication before or during spa use may lead

to unconsciousness with the possibility of drowning.

e) Obese persons and persons with a history of heart disease, low or high

blood pressure, circulatory system problems, or diabetes should consult a
physician before using a spa.

f) Persons using medication should consult a physician before using a spa

since some medication may induce drowsiness while other medication may
affect heart rate, blood pressure, and circulation.

(For spas with a gas heater)

WARNING – Risk of Suffocation. This spa is equipped with a gas heater and

is intended for outdoor use only unless proper ventilation can be provided for
an indoor installation.

SAVE THESE INSTRUCTIONS

HYPERTHERMIA
Hyperthermia occurs when the internal temperature of the body reaches a

level several degrees above the normal body temperature of 98.6°F (37˚C).
Prolonged immersion in hot water may induce hyperthermia.

THE SYMPTOMS OF HYPERTHERMIA INCLUDE:

• Dizziness • Fainting • Drowsiness • Lethargy

• Increase in Internal Body Temperature

THE EFFECTS OF HYPERTHERMIA INCLUDE:

Unawareness of Impending Hazard • Failure to Perceive Heat • Failure to

Recognize the Need to Exit Spa • Physical Inability to Exit Spa • Fetal Damage
in Pregnant Women • Unconsciousness Resulting in a Danger of Drowning

WARNING – The use of alcohol, drugs, or medication can greatly increase the

risk of hyperthermia.

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SAFETY INSTRUCTIONS

IMPORTANT SAFETY
INSTRUCTIONS (CONT.)

DANGER – To reduce the risk of injury to persons, do not remove the suction
grate. Suction through drains and skimmers is powerful when the jets in the spa
are in use. Damaged covers can be hazardous to small children and adults with
long hair. Should any part of the body be drawn into these fittings, turn off the
spa immediately. As a precaution, long hair should not be allowed to float in the spa.

WARNING – Install the spa so that water can be easily drained out of the
compartment containing electrical components so as not to damage equipment.
When installing the spa make sure to allow for an adequate drainage system to
deal with any overflow water. Please allow for at least 3 feet of clearance around
the perimeter of the spa to provide enough room to access for servicing. Contact
your local dealer for their specific requirements.

WARNING – The spa should be covered with an approved locking cover when not
in use, to prevent unauthorized entry and injuries.

WARNING – People with infections, sores or the like should not use the spa. Warm
and hot water temperatures may allow the growth of infectious bacteria if not
properly disinfected.

CAUTION – Safe temperatures for swimming or aquatic exercise is around 80˚F
(26.7˚C).

CAUTION – Risk of Electrical Shock. Do not leave audio compartment open.
Audio CD controls are not to be operated while inside the spa.

CAUTION – Replace components only with identical components.

WARNING – Risk of Electric Shock. Do not connect any auxiliary components (for
example, additional speakers, headphones, additional audio/ video components
etc.) to the system. These units are not provided with an outdoor antenna.

Do not service this product yourself as opening or removing covers may expose
you to dangerous voltage or other hazards. Refer all servicing to qualified service
personnel.

If the power supply cord(s) are damaged, water is entering the speaker, audio
compartment, or any other component in the electrical equipment compartment
area, the protective shield is showing signs of deterioration, or there are signs of
other potentially hazardous damage to the unit, turn off the circuit breaker from
the wall and refer servicing to qualified personnel.

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SAFETY INSTRUCTIONS

IMPORTANT SAFETY
INSTRUCTIONS (CONT.)

The unit should be subjected to periodic routine maintenance once every quarter to
make sure that the it is operating properly.

DANGER – Risk of Electric Shock. A green colored terminal or a terminal marked G,
GR, Ground, Grounding or the symbol shown in Figure 14.1 of UL 1563 is located
inside the supply terminal box or compartment. To reduce the risk of electric shock,
this terminal must be connected to the grounding means provided in the electric
supply service panel with a continuous copper wire equivalent in size to the circuit
conductors supplying this equipment.

At least two lugs marked “Bonding Lugs” are provided on the external surface
or on the inside of the supply terminal box or compartment. To reduce the risk
of electric shock, connect the local common bonding grid in the area of the spa
to these terminals with an insulated or bare copper conductor not smaller than
8AWG.

All field installed metal components such as rails, ladders, drains, or other similar
hardware within 10 feet (3m) of the spa shall be bonded to the equipment
grounding bus with copper conductors not smaller than 8AWG.

SAVE THESE INSTRUCTIONS

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SAFETY INSTRUCTIONS

WARNING: CHILDREN SHOULD NOT USE SPAS OR HOT TUBS WITHOUT ADULT

SUPERVISION.

AVERTISSEMENT: NE PAS LAISSER LES ENFANTS UTILISER UNE CUVE DE RELAXATION

SANS SURVEILLANCE.

WARNING: DO NOT USE SPAS OR HOT TUBS UNLESS ALL SUCTION GUARDS ARE

INSTALLED TO PREVENT BODY AND HAIR ENTRAPMENT.

AVERTISSEMENT: POUR ÉVITER QUE LES CHEVEUX OU UNE PARTIE DU CORPS

PUISSENT ÊTRE ASPIRES, NE PAS UTILISER UNE CUVE DE RELAXATION SI LES GRILLES DI PRISE
D’ASPIRATION NE SONT PAS TOUTES EN PLACE.

WARNING: PEOPLE USING MEDICATIONS AND/OR HAVING AN ADVERSE MEDICAL

HISTORY SHOULD CONSULT A PHYSICIAN BEFORE USING A SPA OR HOT TUB.

AVERTISSEMENT: LES PERSONNES QUI PRENNENT DES MÉDICAMENTS OU ONT

DES PROBLÉMES DE SANTÉ DEVRAIENT CONSULTER UN MÉDECIN AVANT D’UTILISER UNE CUVE
DE RELAXATION.

WARNING: PEOPLE WITH INFECTIOUS DISEASES SHOULD NOT USE A SPA OR HOT TUB.
AVERTISSEMENT: LES PERSONNES ATTEINTES DE MALADIES INFECTIEUSES NE

DEVRAIENT PAS UTILISER UNE CUVE DE RELAXATION.

WARNING: TO AVOID INJURY EXERCISE CARE WHEN ENTERING OR EXITING THE SPA OR

HOT TUB.

AVERTISSEMENT: POUR ÉVITER DES BLESSURES, USER DE PRUDENCE EN ENTRANT

DANS UNE CUVE DE RELAXATION ET EN SORTANT.

WARNING: DO NOT USE DRUGS OR ALCOHOL BEFORE OR DURING THE USE OF A SPA

OR HOT TUB TO AVOID UNCONSCIOUSNESS AND POSSIBLE DROWNING.

AVERTISSEMENT: POUR ÉVITER L’ÉVANOUISSEMENT ET LA NOYADE ÉVENTUELLE, NE

PRENDE NI DROGUE NI ALCOOL AVANT D’UTILISER UNE CUVE DE RELAXATION NI QUAND ON S’Y
TROUVE.

WARNING: PREGNANT OR POSSIBLY PREGNANT WOMEN SHOULD CONSULT A

PHYSICIAN BEFORE USING A SPA OR HOT TUB.

AVERTISSEMENT: LES FEMMES ENCEINTES, QUE LEUR GROSSESSE SOIT CONFIRMÉE

OU NON, DEVRAIENT CONSULTER UN MÉDECIN AVANT D’UTILISER UNE CUVE DE RELAXATION.

WARNING: WATER TEMPERATURE IN EXCESS OF 38˚C MAY BE INJURIOUS TO YOUR

HEALTH.

AVERTISSEMENT: IL PEUT ÊTRE DANGEREUX POUR LA SANTÉ DE SE PLONGER DANS

DE L’EAU A PLUS DE 38˚C.

WARNING: BEFORE ENTERING THE SPA OR HOT TUB MEASURE THE WATER

TEMPERATURE WITH AN ACCURATE THERMOMETER.

AVERTISSEMENT: AVANT D’UTILISER UNE CUVE DE RELAXATION MESURER LA

TEMPÉRATURE DE L’EAU À L’AIDE D’UN THERMOMÉTRE PRÉCIS.

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SAFETY INSTRUCTIONS

WARNING: DO NOT USE A SPA OR HOT TUB IMMEDIATELY FOLLOWING STRENUOUS

EXERCISE.

AVERTISSEMENT: NE PAS UTILISER UNE CUVE DE RELAXATION IMMÉDIATEMENT

APRÉS UN EXERCISE FATIGANT.

WARNING: PROLONGED IMMERSION IN A SPA OR HOT TUB MAY BE INJUROUS TO YOUR

HEALTH.

AVERTISSEMENT: L’UTILISATION PROLONGÉE D’UNE CUVE DE RELAXATION PEUT

ÊTRE DANGEREUSE POUR LA SANTÉ.

WARNING: DO NOT PERMIT ELECTRIC APPLIANCES (SUCH AS LIGHT, TELEPHONE, RADIO,

OR TELEVISION) WITHIN 1.5 M OF THIS SPA OR HOT TUB.

AVERTISSEMENT: NE PAS PLACER D’APPAREIL ÉLECTRIQUE (LUMINAIRE, TÉLÉPHONE,

RADIO, TÉLÉVISEUR, ETC) À MOINS DE 1.5 M DE CETTE CUVE DE RELAXATION.

CAUTION: MAINTAIN WATER CHEMISTRY IN ACCORDANCE WITH MANUFACTURER’S

INSTRUCTION.

ATTENTION: LA TENEUR DE L’EAU EN MATIÉRES DISSOUTES DOIT ÊTRE CONFORME AUX

DIRECTIVES DU FABRICANT.

Hyperthermia occurs when the internal temperature of the body reaches a level several degrees
above the normal body temperature of 98.6˚F (37˚C). The symptoms of hyperthermia include
drowsiness, lethargy, and an increase in the internal temperature of the body. The effects of
hyperthermia include:
(a) unawareness of impending hazard;
(b) failure to perceive heat;
(c) failure to recognize the need to exit spa;
(d) physical inability to exit spa;
(e) fetal damage in pregnant women; and
(f) unconsciousness and danger of drowning.

WARNING: THE USE OF ALCOHOL OR DRUGS CAN GREATLY INCREASE THE RISK OF

FATAL HYPERTHERMIA IN HOT TUBS AND SPAS.

LA CONSOMMATION D’ALCOOL OU DE DROGUE AUGMENTE CONSIDÉRABLEMENT LES
RISQUES D’HYPERTHERMIE MORTELLE DANS UNE CUVE DE RELAXATION.

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Compliance

Relax and rest assured that your Master Spas manufactured spa has been built with safety in mind.
We manufacture our self-contained spas to meet a stringent list of industry standards.

Our spas comply with the following industry standards:

• UL 1563 Standard for Electric Spas, Equipment Assemblies and Associated Equipment

• ICC ISPSC International Swimming Pool & Spa Code

• VGB Virginia Graeme Baker Pool and Spa Safety Act (Certified by UL to UL 1563)

• ANSI/APSP-6 Standard for Portable Spas

• ANSI/APSP/ICC-14 Standard for Portable Spa Energy Efficiency

• CEC Title 20 Appliance Efficiency Regulation

• CSA C22.2 No. 218.1 Spas, Hot Tubs and Associated Equipment

• CE - EN 60335-2-60 Household and Similar Electrical Appliances – Safety: Particular
Requirements for Whirlpool Baths and Whirlpool Spas

• CE - EN 60335-1 Household and Similar Electrical Appliances – Safety: General Requirements

• 206/95/EC EC Low Voltage Directive

• 204/108/EMC Directive

• 93/68/EEC CE Marking Directive

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VGB Suction Safety &
Maintenance Instructions

VGB 2008:

WARNING

Read and follow all instructions in this manual and on the suction fitting. Failure to follow
instructions can cause severe injury and/or death.

Failure to remove pressure test plugs and/or plugs used in winterization of the spa/swim
spa from the suction outlets can result in an increased potential for suction entrapment.

Suction outlet components have a finite life. The cover/grate should be inspected frequent­ly and replaced at least every seven years, or if found to be damaged, broken, cracked,
missing, or not securely attached.

If the fitting is missing or broken, replace with a fitting of equivalent rating or higher. Use
of a lower rated suction fitting could result in entrapment of the body which could result
in serious injury including drowning.

Do not use or operate spa/swim spa if this suction fitting is missing, broken or not secured
per instructions. The suction fitting is intended to prevent entrapment of the body. Use of
the spa/swim spa with a missing, broken or improperly secured suction grate may result in
serious personal injury including drowning.

When the spa/swim spa is in operation, suction is created at this fitting. Users of the spa/
swim spa must be instructed not to come in contact with this fitting in such a way as to
block its orifice. If a user of the spa/swim spa blocks this fitting with his/her body, serious
personal injury or drowning may occur.

IMPORTANT SAFETY INSTRUCTIONS

WARNING - SUCTION ENTRAPMENT HAZARD

Suction in suction outlets and/or suction outlet covers which are damaged, broken,
cracked, missing, or unsecured can cause severe injury and/or death due to the fol­lowing entrapment hazards:

Hair Entrapment: Hair can become entangled in suction outlet cover.
Limb Entrapment: A limb inserted into an opening of a suction outlet sump/fitting or suction outlet

cover that is damaged, broken, cracked, missing, or not securely attached can result in a mechani­cal bind or swelling of the limb.

Body Suction Entrapment: A negative pressure applied to a large portion of the body or limbs can
result in an entrapment.

Evisceration / Disembowelment Entrapment: A negative pressure applied directly to the intestines
through an unprotected suction outlet sump or suction outlet cover which is damaged, broken,
cracked, missing, or unsecured can result in evisceration / disembowelment entrapment.

Mechanical Entrapment: There is potential for jewelry, swimsuit, hair decorations, finger, toe, or
knuckle to be caught in an opening of a suction outlet cover resulting in mechanical entrapment.

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VGB Suction Safety &
Maintenance Instructions

TO REDUCE THE RISK OF ENTRAPMENT HAZARDS:

• Never use a spa/swim spa if any suction outlet component is damaged, broken, cracked, missing,

or not securely attached.

• Replace damaged, broken, cracked, missing, or not securely attached suction outlet components
immediately.

• It is recommended that suction components be inspected at least monthly.

• Replace the suction within 7 years from the installation date. Contact your dealer or local service
center for quoting and scheduling this required maintenance. This is a mandated regulation and
is not part of nor covered by the spa/swim spa warranty.

NOTE: Always review entire safety and maintenance information before beginning maintenance.
Contact Master Spas for Suction Installation information for complete suction assembly replace­ment.

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GLOSSARY OF SPA TERMINOLOGY

Your new Master Spa features a variety of jets. All jets, regardless of style return the water to the
spa. Air is mixed with the water by using the air controls (if equipped) creating a vigorous massage.
Water flow is adjusted by simply turning the outer face of most jets. Your Master Spa may have a
combination of pulsating, rotating, dual pulsating and directional adjustable jets.

1. THERAPY JETS

Located throughout the seats of the spa to offer a variety of therapy combinations.

2. NECK JETS (if equipped)

Located above the normal water level to provide massaging action to the back of the neck.

3. SHOULDER JETS (if equipped)

Located above the normal water level to provide massaging action to the shoulders.

4. MASTER BLASTER FOOT THERAPY JET (if equipped)

Large jet with several fixed nozzles located in the bottom of the spa near the floor to provide
excellent massage to the feet.

5. JET DIVERTER VALVE (if equipped)

Located on the top flange of the spa, this large valve physically diverts the flow of water from
one group of jets to another. Be sure that no sand or particles are brought into the spa as they
will cause the diverter to seize up. It is best to turn the diverter valve only when the pump is
turned off.

6. WATER FEATURE VALVE (if equipped)

Located on the top flange of the spa, this smaller valve adjusts water flow to the waterfalls and/

or water features in your spa.

NOTE: When the spa is not in use, this valve should be turned mostly shut (not completely shut)

to prevent the water features from allowing water to hit the cover while it is closed. If
left mostly open, water may hit the cover and possibly run out of the spa causing water
loss.

7. 3-WAY DIVERTER JET (if equipped, GetAway Hot Tubs)

This large jet can be turned 180˚ to 3 different points and diverts
the flow of water from one group of jets to another. With the
pump turned off, twist the face of this jet 1/4 turn at a time
clockwise or counterclockwise to adjust.

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GLOSSARY OF SPA TERMINOLOGY

8. AIR CONTROL VALVE

These smaller valves are located around the top of your spa. You may increase or decrease
the force of your jets by opening or closing the air control valves. Each air control valve will
typically function 1 to 2 groups or seats of jets in the spa. When not in use the air controls
should be kept in the closed position as the air being introduced in to the water can tend to
cool the water and increase the dissipation rate of sanitizer levels.

9. TOPSIDE CONTROL PANEL

You may safely control spa functions from inside or outside your spa using the Topside
Control Panel. This Panel is used to control the water temperature, pumps, the spa light,
automatic filtration cycles and other advanced functions. The digital display will give you a
constant temperature readout and will notify you in case of certain malfunctions. Several user
programmable functions are also available.

10. PERSONAL REMOTE CONTROL (if equipped)

Select spa models may have an additional remote which allows the user to control the jet

therapy while remaining in the seat (if applicable). By pressing the control one time, you will
activate the pump. Press again for high speed and again to turn it off.

11. EQUIPMENT ACCESS PANEL

This is the skirt panel located below the Topside Control Panel. This area houses the major-

ity of components responsible for the spas operation. These components include the pumps,
heater, spa control system, ozonator (if equipped), and LED light system (if equipped). Pump
and equipment placement may vary by model.

12. ACCESS PANELS

These are the skirt panels located around all four sides of the spa. All of the skirt panels are

removable should service be required. Master Spas recommends at least 3 feet of access be
provided around the spa.

13. FILTER LID

This lid fits over the filter area and weir gate to cover the filters. Remove filter lid to access

filters for maintenance.

14. WEIR GATE

The weir gate is the horizontal door located in front of the filters that helps keep debris

trapped in the filter area

15. SPA CONTROL SYSTEM

This houses the wiring and electrical components necessary to operate the spa.

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GLOSSARY OF SPA TERMINOLOGY

16. SPA HEATER

This is an electric heater housed in a stainless steel tube. It is thermostatically controlled and

equipped with high-limit temperature safety shut-off sensors.

17. SLICE VALVES

These valves are used by service personnel to shut off water
to the heating system (heater and pump plumbed to the
heater) so that the spa water does not need to be drained
if the spa requires service to the heating system (varies by
model).

NOTE: Slice valves must be completely open during normal

operations.

18. MAIN THERAPY PUMP

This produces water flow through the main jets in the spa. The first pump may be operated

on two speeds (varies by model). Low speed (if applicable) will produce efficient water circu­lation during filtration, heating of the spa water, and gentle jet action. High speed provides
maximum jet action. The main pump is controlled by the “Jets” or “Jets I” button on the
Topside Control Panel.

19. SECONDARY THERAPY PUMP (if equipped)

This produces water flow through 1 to 2 groups or seats of jets in the spa. The second pump

operates similar to the main pump and is controlled by the “Jets II” or “Aux” button on the
Topside Control Panel.

20. THIRD THERAPY PUMP (if equipped)

This produces water flow through 1 to 2 groups or seats of jets in the spa. This is controlled

by the Jets III button on the Topside Control Panel.

21. CIRCULATION PUMP (if equipped)

This produces water flow through the heater in the spa and provides the water flow

necessary to actuate the ozone injector. This energy efficient pump typically runs 24 hours
for efficient filtration and heating.

22. PUMP UNION

This connects the plumping and pump together. These are used to help relieve possible pump
air locks or for service personnel to easily service the pumps.

23. HEATER UNION

These are used by service personnel to easily service the heater.

Slice Valve and Pump Union

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EcoPur® water filter system is designed to reduce the use of chemicals in your spa. You will still
be required, periodically, based on usage to add a small amount of chlorine to oxidize organic
compounds in the water. The EcoPur® filter system will not eliminate the need to maintain proper
water chemistry but can make the maintenance a more natural experience.

FEATURES

• The EcoPur® filter system will not oxidize organic compounds and will require periodic doses of
chlorine to assist in the sanitization and oxidation processes required to maintain clear spa water.

• EcoPur® filter system will not alter the ph of spa water. The EcoPur® filter system will actually aid
in stabilizing the ph. EcoPur® does not alter the (TDS) total dissolved solids.

• The main function of the EcoPur® filter system is to provide clean and clear spa water.
Proper chemical balance and filtration are also key components in maintaining healthy spa
water. Always ensure that the ph and total alkalinity of the spa water is checked and balanced
at all times. To ensure proper filtration, clean the regular filter cartridge with a “filter cleaner”
every 30 days and rinse the EcoPur® cartridge with a hose to remove any buildup of
containments. (Do not soak the EcoPur® cartridge in filter cleaner.) If water appears to
be visually cloudy, dull, or has an odor, shock the spa water with 1 ounce of chlorine*
to remove excessive containments. When cleaning filters, be sure to never have the
pumps (including the circulation pump) running without the filters in place. Failure
to do so may result in debris being drawn into the pumps causing unwarranted damage.

• Helps remove calcium carbonate and hydrogen sulphide from spa water to protect heaters
and equipment from precipitation.

• Helps stabilize the pH and alkalinity of the spa water.

• Helps reduce chemical usage and still provide safe odor-free water.

• Helps deplete excess chlorine after chemical shock to prevent damage to skin,
hair, and swim wear.

• Helps to produce ultra clean and clear water.

Note: EcoPur® filters are not recommended for use with Bromine. Consult your dealer for additional
information.

Master Spas products are not designed to be used with Biquanides. These chemicals are found in
SoftSwim® and Baqua Spa® products. Due to adverse effects from these types of sanitizers, the

use of these products may void the spa warranty.

THE ADVANTAGES OF EcoPur® Filtration

18DO NOT DIVE.

WATER CHEMISTRY TERMS YOU SHOULD KNOW

Before jumping into Water Maintenance, here are some terms to help you.

1. Parts per million, or ppm: This is a form of measurement used in most pool or spa chemical

readings. Best described as any one million like items of equal size and make up, next to one
unlike item, but of equal size. This would be one part per million.

3. Total Alkalinity: Measures substances in your water such as hydroxides, carbonates and

bicarbonates. When at the proper levels, these elements keep your water from clouding and
growing bacteria, as well as prevent the inner workings of your hot tub from deteriorating
or forming scale. TA also helps to stabilize pH. The higher the TA level (as long as it is within
the recommended range), the less likely the pH is to change. You are looking for a range
between 80 - 120 ppm. With low alkalinity, the pH will fluctuate and be harder to control.
With high alkalinity, it becomes extremely difficult to change the pH.

4. pH or potential hydrogen: This indicates the acidity or basicity of the water. The goal is to

have a neutral, stable pH to prevent spa damage and unhealthy conditions. Low pH levels can
corrode metals, etch or stain fiberglass or acrylic, cause unsanitary conditions that irritate the
eyes or skin and destruct the total alkalinity of the water. High pH can cause cloudy water,
eye or skin irritation, scale formation and poor chlorine or bromine efficiency. Note that the
chemicals you are using to sanitize and clean your hot tub can also lower or raise the pH level
in the water. You want this range to fall between 7.2 - 7.6 on the scale. Unfortunately, there
are lots of variables to preventing high pH in your hot tub. You can use the chart to the right
to help you balance it.

5. Shocking: By shocking the water in your hot tub, you remove organic compounds from the

water, kill bacteria, remove bromamines or chloramines and reactivate the bromides in the
spa for cleaner water. You should shock your water once a week, after heavy bather use or
any time free chlorine levels test lower than total chlorine levels. To do this, either add oxi­dizer/non-chlorine shock to burn off the chloramines or add extra chlorine to raise the chlo­rine level above 8 ppm. Oxidizer/non-chlorine shock acts by releasing oxygen in the water,
which serves a similar function as chlorine. An advantage to using this type of shock is that
the water is safe to enter after 15 minutes of the application and excessive sanitizer (chlorine)
levels do not occur. However, an oxidizer/non-chlorine shock doesn’t disinfect the water for
bacteria. If you use chlorine to shock, you must wait until the total chlorine reading is below
5 ppm.

6. Sequestering: This can be defined as the ability to form a chemical complex which remains in

solution, despite the presence of a precipitating agent (i.e. calcium and metals). If the miner­als and metals in water are not sequestered, they can cause a reaction, turning the water
brown, red, orange or green depending on the minerals and metals present in your water. It
is important to add a sequestering agent when adding water to your hot tub and even on a
regular basis (if bottle instructions recommend doing so). Common names for sequestering
chemicals are; minquest, stain and scale control, metal-x, spa defender, spa metal gone, (etc.).

7. Filtration: Filters are necessary to remove particles of dust, dirt, algae, etc. that are continu-

ously entering the water. If the spa is not operated long enough each day for the filter to do
a proper job, this puts a burden on the chemicals, causing extra expense. Filtration time will
depend on the water capacity, pump and filter size and, of course, bather load. Spare filter
cartridges should be kept on hand to make it easy to frequently clean the cartridge without
the need for a long shut down. This will also allow the cartridge to dry out between usages,
which will increase the cartridge life span as much as twice. Replace the cartridge when the
pleats begin to deteriorate. Cartridge cleaning should be done a minimum of once a month.
More often with a heavy bather load. See “Filter Cleaning” in the Regular Maintenance sec­tion.

19DO NOT DIVE.

8. Sanitizers: Germs and bacteria enter the water from the environment and the human body; a

sanitizer keeps the water balanced and safe to use. Either chlorine or bromine can be used as
a sanitizer to create a healthy water environment.

A. Chlorine:

1. Only one type is approved for spa use. Sodium dichlor which is granular, fast dissolv-

ing and pH neutral chlorine.

2. Chlorine is an immediate sanitizer and will be added as needed to maintain free chlo-

rine levels between 2.0 to 4.0 ppm.

B. Bromine (Note: Bromine use is not recommended with EcoPur filters.)

1. Two types of tablets:

a. Hydrotech
b. Lonza

2. Bromine is a slow dissolve chemical and may take a few days to develop a reserve

or reading in the water. Bromine levels should be maintained between 2.0 to 4.0
ppm.

9. Total dissolved solids (TDS): Materials that have been dissolved by the water. i.e. Like what

happens when you put sugar in coffee or tea.

10. Useful life of water (in days): Water should be drained at least once every 180 days. Useful life

may vary by usage and bather load.

11. Defoamer: A chemical used to temporarily reduce foaming. Causes of foaming include body

oils, cosmetics, lotions, surface cleaners, high pH or algae, as well as other organic materials.
Low levels of calcium or sanitizer can also cause increased foaming. Note that you may need
to physically remove the foam and/or drain all or part your water to remove or dilute the
causes of the foam.

12. Calcium hardness: This measurement tells you how much magnesium and calcium are in your

water. However, calcium hardness can react with all of the chemicals, bacteria, dirt and other
substances that your water dissolves and get thrown out of balance. Just like the other ele­ments, calcium levels must remain balanced and need to be monitored or you run the risk
of metal deterioration, water foaming or clouding and scale formation at the surface of your
water. The calcium hardness of your water should fall between 150 - 250 ppm.

NOTE: Always leave spa cover open for 15 minutes after adding chemicals to prevent the off

gas from damaging your spa cover, spa pillows, stainless steel hardware and other critical
parts.

WATER CHEMISTRY TERMS YOU SHOULD KNOW

20DO NOT DIVE.

WHY ARE CHEMICALS IMPORTANT IN A SPA

1. Evaporation:

As water evaporates, only pure water evaporates, leaving the salts, minerals, metals, and any

unused chemicals behind. Adding water adds more salts, minerals, and metals. In time, the
water can become saturated with these dissolved solids and can cause stains or scale to form
on the walls of the spa or a scale build up inside the equipment. Colored or cloudy water,
and possible corrosion of plumbing and fittings may also occur.

2. Heat:

Heat causes much quicker evaporation and also will cause minerals and metals to precipitate

out of solution.

3. Air:

Dust and other airborne contaminants are introduced into the spa.

4. Environment:

The environment surrounding the spa can also impact the water quality. Items such as pol-

len, grass, sand, dirt, lawn fertilizer, airborne dust, insects, leaves, and pets can all affect the
water quality of the spa.

5. Bathers:

As the spa is used, bathers introduce contaminants to the water. Increased bather load,

length of use and frequency will increase the amounts of contaminants added in to the
water.

Remember:

The maintenance routines set forth in this manual may need to be adjusted depending on bather
load and how much the spa is being used.

21DO NOT DIVE.

Step 1: Your spa should be filled using a Pre-filter, which can be obtained from your local

dealer. This Pre-filter will help remove many of the minerals existing in the water,
which will make adjusting the water balance easier after a new fill. Never use more
then 50% softened water when filling the spa.

Step 2: During the initial filling of the spa, add a sequestering agent to combat suspended

minerals in the water. The agents are sold under many different names such as Mineral
Clear or Metal Protect. Allow water to circulate and filter for at least 30 minutes
(or per bottle recommendations) before adding any other chemicals.

Step 3: Test water for pH, total Alkalinity, and Calcium hardness. The pH should be 7.4 - 7.6

and the total Alkalinity 100 - 120 ppm. Calcium hardness levels should be maintained
between 150 and 250 ppm (part per million).

Step 4: Adjust pH and total Alkalinity (TA) utilizing the directions on the chemical bottles.

Wait 15 minutes, test and adjust if necessary.

Step 5: It may be necessary to retest and add additional chemicals to get to the proper levels

in Step 3.

Step 6: Add concentrated chlorinating granules* (sodium Dichlor-s-triazinetreone) to reach a

Free Chlorine level of 5 to 8 ppm on initial start up to begin sanitizing the spa water.
Bathers should not enter the spa until the chlorine levels drop below 5.0 ppm. Always
refer to the chemical manufacturers dosage recommendations listed on the container.
It is important not to add the chlorinating granules until the pH, alkalinity and calcium
hardness have been adjusted to their proper levels.

*SPECIAL NOTE:

We recommend a minimum level of 2.0 ppm residual free chlorine be maintained in spa water. Always refer to
the chemical manufacturer’s dosage recommendations listed on the container.

When adding chlorine or non-chlorine shock/oxidizer always spread it across the water while the pumps are run­ning.

The quantities of sanitizer and oxidizer shown in this manual are for 500 gallon spas and may have to be adjust­ed depending on the actual amount of water that your spa holds. See the specifications section of this manual
for the correct gallons of your spa.

The concentration of active ingredients in spa chemicals varies by manufacturer. The amounts of sanitizer sug­gested in this manual are based on spa chemicals that have the active ingredient percentages listed below:

Chlorine Non-Chlorine Shock/ Oxidizer
Active ingredient: Active ingredient:

Sodium dichlor ................................. 99% Potassium peroxymonosulfate ....................... 42.8%

Other ingredients ................................ 1% Inert ingredients ............................................ 57.2%

Total ............................................... 100% Total............................................................ 100%

WATER MAINTENANCE – START-UP