Master Spas TWILIGHT Series User manual
OWNER’S MANUAL
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MASTER SPAS TWILIGHT 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. To check on updates or for other information,
please visit www.masterspas.com and follow the links to the customer service section.
RECORD OF OWNERSHIP
Name���������������������������������������������������������������������������
Address�������������������������������������������������������������������������
City ������������������������������������� State ���������� Zip ��������������������
Date Purchased ������ /������ /�������
Model ������������������������������ Serial #�������������������������������������
Dealer Name ��������������������������������������������������������������������
Phone # (������)��������-����������
Service Tech Rep �����������������������������������������������������������������
*SERIAL NUMBER LOCATION
The serial number for your spa is located in the filter area, on the spa system pack, or on the
listing plate on the skirting. It is a seven digit number. Ex. 1345900
6927 Lincoln Parkway
Fort Wayne, Indiana 46804
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TABLE OF CONTENTS
Safety Instructions 3-10
Glossary of Spa Terminology 11
Electrical Requirements................................................................................................... 12-13
Wiring Schematic ......................................................................................................... 14
Site Preparation / General Guidelines....................................................................... 15-16
Installation Instructions ................................................................................................. 17
Water Chemistry Terms You Should Know 18-19
Spa Water Maintenance
The Advantages of Eco Pur Filtration ............................................................................ 20
Water Quality Maintenance Start-Up ............................................................................ 21
Water Quality Maintenance Schedule – ECO PUR.................................................... 22-23
Water Maintenance Trouble-Shooting Guide 24
Why Chemicals are Important in a Spa 25
Maintenance Recommendations 26
Winterizing Your Spa 27
Twilight Spa Specifications 28
Twilight Spa Controls
TS 6.1, TS 67.15, TS 7.1, TS 7.15 ............................................................................ 29-38
Twilight Spa Controls
TS 67.25, TS 7.2, TS 7.25, TS 8.2,
TS 8.25, TS 8.3, TS 8.35, TS Fit, TS 240................................................................... 39-40
Twilight Spa Controls
TS MP, TS Fit .......................................................................................................... 41-58
Twilight Spa Controls
TS 120..................................................................................................................... 59-60
Spa Theater System (STS) 61-62
Standard Fusion Audio System 63
Deluxe Fusion Audio System 64-65
Spa Trouble-Shooting Guide 66-67
Regular Maintenance Procedures 68-69
WiFi Operation TS MP and TS Fit Only 70
Spa Care and Maintenance Record 71-72
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SAFETY INSTRUCTIONS
SAVE THESE INSTRUCTIONS
INTRODUCTION
-
-
THE ULTIMATE RELAXATION MACHINE!
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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
(13.302mm2) 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.
SAFETY INSTRUCTIONS
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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 prod-
uct 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 pre-
vent unauthorized access by children. To avoid accidents, ensure that children can-
not 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 spe-
cific 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 suc-
tion 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 sur-
faces. 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 (8.4mm2) 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 40˚C (104˚F). Water temperatures
between 38˚C (100˚F) and 40˚C are considered safe for a healthy adult.
Lower water temperatures are recommended for young children and when
spa use exceeds 10 minutes.
SAFETY INSTRUCTIONS
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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 preg-
nant women should limit spa water temperatures to 38˚C (100˚F).
c) Before entering a spa, the user should measure the water temperature
since the tolerance of water temperature- regulating 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.
HYPERTHERMIA
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:
•Dizziness•Fainting•Drowsiness•Lethargy
•IncreaseinInternalBodyTemperature
THE EFFECTS OF HYPERTHERMIA INCLUDE:
UnawarenessofImpendingHazard•FailuretoPerceiveHeat•Failureto
RecognizetheNeedtoExitSpa•PhysicalInabilitytoExitSpa•FetalDamage
inPregnantWomen•UnconsciousnessResultinginaDangerofDrowning
SAFETY INSTRUCTIONS
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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 compart-
ment 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 2 feet of clearance around the perim-
eter 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.
CAUTION – Risk of Electrical Shock. Do not leave audio compartment open.
Audio 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.
SAFETY INSTRUCTIONS
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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 3m of the spa shall be bonded to the equipment grounding bus
with copper conductors not smaller than 8AWG.
SAVE THESE INSTRUCTIONS
SAFETY INSTRUCTIONS
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WARNING:
SUPERVISION
AVERTISSEMENT:
WARNING:
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SAFETY INSTRUCTIONS
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WARNING:
AVERTISSEMENT:
LA
WARNING:-
UOUS EXERCISE
AVERTISSEMENT:-
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ATTENTION:-
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SAFETY INSTRUCTIONS
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GLOSSARY OF SPA TERMINOLOGY
1. DRAINING YOUR SPA. The drain is located behind the front panel on
the far right side. You can access the drain by unscrewing the corner
screws and removing the corner panel. Grasp the drain cap, and pull
the assembly out all the way. Unscrew the cap, and push the assembly
back in half way to start the flow of water. Attach a garden hose,
if desired. Draining times may vary by model using the external hose
bib. A sump pump may also be used to drain the spa quickly. NOTE:
When pushing or pulling the assembly in or out, water will drip from
the drain during the transition. This is normal. Due to the shape of the
TS 120 and TS 240 this type of drain is not fitted on either of these
spas. The drain in these spas is located inside of the front panel of the
spa. See page 68 for details.
2. JETS 1 PUMP. This pump produces water flow through the main jets in the spa. This pump
may be operated on two speeds. The low speed will produce efficient water circulation
and gentle jet action. High speed should be used for maximum jet action. In spas not
equipped with a 24 hour circulation pump, this pump also moves water for the heat and
filtration cycles.
3. JETS 2 PUMP.(If so equipped) This produces water flow through the designated jets and
has only one speed.
4. JETS 3 PUMP.(If so equipped) This produces water flow though the designated jets and
has one speed.
5. CIRCULATION PUMP. (If so equipped) This pump runs 24 hours a day and moves water for
heating and filtration. Spas equipped with this pump do not have filtration cycles as they
are not necessary in this configuration.
6. JET DIVERTER VALVE. Located on the topside of the spa, this valve physically diverts the
flow of water from one jet zone of the spa to another jet zone. 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.
7. PUMP UNION. These are used by service personnel to easily service the jet pump(s).
8. HEATER UNION. These are used by service personnel to easily service the spa heater assembly.
9. OZONATOR. Your ozone generator will operate in conjunction with your filtration system.
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HAVE YOUR ELECTRICIAN READ THE FOLLOWING INFORMATION BEFORE
INSTALLATION BEGINS
Electrical connections made improperly, or the use of wire gauge sizes for incurring
power which are too small, may continually blow fuses in the electrical equipment box,
may damage the internal electrical controls an components, may be unsafe and in any
case will void your warranty.
It is the responsibility of the spa owner to ensure that electrical connections are made by
a qualified electrician in accordance with the National Electrical Code and any local and
state electrical codes in force at the time of installation.
These connections must be made in accordance with the wiring diagrams
found inside the control box. This equipment has been designed to operate on 60Hz.
alternating current only, 120 volts are required. Make sure that power is not applied
while performing any electrical installation. A copper bonding lug has been provided on
theelectrical equipment pack to allow connection to local ground points. The ground
wire must be at least 14 AWG copper wire (unless local orstate codes require a heavier
gauge wire) and must be connected securelyto a grounded metal structure such as a
cold water pipe. All equipment packs are wired for 120 VAC only. The only electrical
supply for your spa must include a 15 AMP switch or circuit breaker toopen all non-
grounded supply conductors to comply with section 422-20of the National Electrical
Code. The disconnect must be readily accessibleto the spa occupants, but installed at
least five feet from the spa. A Ground-Fault Circuit Interrupter (GFCI) (provided with
the spa) must be used to comply with section 680-42 of the National Electrical Code. A
ground fault is a current leak from any one of the supply conductors to ground. A GFCI
is designed to automatically shut off power to a pieceof equipment when a ground fault
is detected.
Power hook-up to the spa must be 120 volt 2 wire plus ground
(14 AWG copper).
Route the cable into the equipment area for final hook-up to terminals inside the control
panel. The spa must be hooked up to a “dedicated” 120 volt, 15 amp. The term “dedi-
cated” means the electrical circuit for the spa is not being used for any other electrical
items (patio lights, appliances, garage circuits, etc.). If the spa is connected to a non-
dedicated circuit, overloading will result in “nuisance tripping”which requires resetting
of the breaker switch at the house electrical panel. Rev. 11/07
Permanently Connected Equipment Assembly with Pump(s), Heaters, Luminaine, Ozone, Spa
Side Control(s), Pump shut off device.
NOTE: Some of the above components may be optional or not available with every
spa model.
ELECTRICAL INSTALLATION REQUIREMENTS
For TS 120 Only
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ELECTRICAL INSTALLATION REQUIREMENTS
For All Models Except TS 120
HAVE YOUR ELECTRICIAN READ THE FOLLOWING INFORMATION BEFORE
INSTALLATION BEGINS
Electrical connections made improperly, or the use of wire gauge sizes for incurring
power which are too small, may continually blow fuses in the electrical equipment box,
may damage the internal electrical controls and components, may be unsafe and in any
case will void your warranty.
It is the responsibility of the spa owner to ensure that electrical connections are made by
a qualified electrician in accordance with the National Electrical Code and any local and
state electrical codes in force at the time of installation.
These connections must be made in accordance with the wiring diagrams found inside
the control box. This equipment has been designed to operate on 60Hz. alternating
current only, 240 volts are required. Make sure that power is not applied while perform-
ing any electrical installation. A copper bonding lug has been provided on the electrical
equipment pack to allow connection to local ground points. The ground wire must be
at least 8 AWG copper wire (unless local or state codes require a heavier gauge wire)
and must be connected securely to a grounded metal structure such as a cold water
pipe. All Master Spas equipment packs are wired for 240 VAC only. The only electrical
supply for your spa must include a 50 AMP switch or circuit breaker to open all non-
grounded supply conductors to comply with section 422-20 of the National Electrical
Code. The disconnect must be readily accessible to the spa occupants, but installed at
least five feet from the spa. A Ground-Fault Circuit Interrupter (GFCI) must be used to
comply with section 680-42 of the National Electrical Code. A ground fault is a current
leak from any one of the supply conductors to ground. A GFCI is designed to automati-
cally shut off power to a piece of equipment when a ground fault is detected.
Power hook-up to the spa must be 240 volt 3 wire plus ground (6 AWG copper) 8 AWG
copper ground wire.
Route the cable into the equipment area for final hook-up to terminals inside the con-
trol panel. The spa must be hooked up to a “dedicated” 240 volt, 50 amp breaker and
GFCI. The term “dedicated” means the electrical circuit for the spa is not being used for
any other electrical items (patio lights, appliances, garage circuits, etc.). If the spa is con-
nected to a non-dedicated circuit, overloading will result in “nuisance tripping” which
requires resetting of the breaker switch at the house electrical panel. Rev. 11/11
Permanently Connected Equipment Assembly with Pump(s), Heaters, Luminaine, Ozone, Spa
Side Control(s), Pump shut off device, and Audio/Video Components.
NOTE: Some of the above components may be optional or not available with every
spa model.
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ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
50 5050
TEST
50
1
2
3
4
5
WHITE (NEUTRAL)
BLACK (HOT)
RED (HOT)
GREEN (GROUND)
Instruments
Balboa
Incorporated
Wire Key
House Breaker Box
G.F.C.I Breaker Box
Spa System Box
Green (Ground)
Red (Hot)
Black (Hot)
White (Neutral)
NOTE: For a 240 V
dedicated hook-up, the
white neutral wire is
not required between
the G.F.C.I. and the
system box.
GRN
GRN (GROUND)
RED (HOT)
BLK (HOT)
BLK (HOT)
RED (HOT)
RED (HOT)
WHT (NEUTRAL)
WHT
WHT
BLK (HOT)
GRN (GROUND)
TB1
IDF00007.mac 6/17/97
* Actual wiring of GFCI will vary by manufacturer of GFCI. The GFCI shown is a Square D.
Improper wiring of GFCI may result in permanent damage to spa system box. Repair / replace-
ment of spa system box is not covered under warranty when damage results from improper
wiring.
WIRING SCHEMATIC - 240 VOLT SPA HOOK-UP
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SITE PREPARATION / GENERAL GUIDELINES
Portable spa installation is simple when properly planned. To that end, it is important that you read
the following information carefully and consult with your Master Spas dealer.
1) Access - The actual dimensions of your new spa will determine the amount of space that is
needed in moving the spa from curbside to its final installation area. Be sure to measure side
yard dimensions, gates or doors and vertical obstructions such as roof overhangs and overhead
cables. Any other space limiting obstacles such as trees or shrubs must be evaluated.
2) If the spa is being installed indoors, dimension limitations such as stairs, ceilings and walls must
be taken into consideration. Please have your Master Spas dealer or delivery service review site
or installation plans prior to delivery.
3) Surface/Pad Requirements - When your new spa is filled with water and bathers, it may weigh
as much as several tons. It is imperative that the base beneath the spa can support the entire
weight. The spa must be on a uniformly firm, continuous, and level surface. The recommended
foundation is a concrete pad with a minimum thickness of four (4) inches with steel reinforce-
ment bars crossed throughout the pad.
4) GFCI ( For TS 120 only) - Your spa is equipped with a 15 amp GFCI cord that must be plugged
into a dedicated 15 amp electrical outlet. This cord is located inside the spa behind the front
skirt panel. Before operating the spa first remove the cord by cutting the plastic ties that secure
it during shipping. Bring the cord outside of the spa and insert the cord in the “U” shaped
channel provided below the front skirt panel area. Note: For Canadian spas the GFCI cord is not
attached to the equipment pack and will have to be attached by a licensed electrician.
IMPORTANT
When installing your spa indoors, on a wood deck, or balcony, the same load requirements must
be met. Total load may be as much as 90 pounds per square foot. You should speak with a quali-
fied contractor or your local building department to confirm that your surface is adequate for sup-
porting a spa. Be sure to locate your spa so that equipment remains above grade and is not subject
to flooding.
The equipment side(s) of the spa must be accessible in the event that future service is needed.
Periodical maintenance checks require entry into the equipment bay. When possible, it is wise plan-
ning for the future to leave 2 feet of access to all sides of the spa in the event your spas plumbing
requires maintenance. Your spa warranty does not cover the cost of providing access for service.
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SITE PREPARATION / GENERAL GUIDELINES
GENERAL CONSIDERATIONS FOR OUTDOOR INSTALLATION
Again, proper planning will increase your total enjoyment factor with your new spa. Listed below
are some additional items to consider when planning your installation.
•Howspawillcomplementlandscapingandviceversa
•Viewfrominsidespaandviewofspafrominsideofhome
•Exposuretosunlightandshadingfromtrees
•Privacy
•Gettingtospafromhouseandreturn
•Proximitytodressingroomsandbathrooms
•Storageforspachemicals
•Localbuildingcodes(ifapplicable)
•Powercable
GENERAL CONSIDERATIONS FOR INDOOR INSTALLATION
Installing your spa indoors creates an entirely different set of considerations. Here again, with
proper planning, no matter what room your spa goes in, it will be your favorite room.
•WorkwithyourMasterSpasdealerandcontractortoinsurealllocalbuilding,electricaland
plumbing codes are met
•Planforafloordraintodrainoffexcesswaterorfordrainingandcleaningyourspa
•Aventilationfanmaybenecessaryduetohighhumiditycreatedbyyourspa
•Finishedmaterialinyoursparoomshouldalsobecapableofwithstandingincreasedhumidity
17DO NOT DIVE.
INSTALLATION INSTRUCTIONS
1.) Put spa in final position that allows for access to equipment and spa components.
2.) Remove front side panel (this is the side where the main topside
control panel is located) so the electrical service can be hooked up
to the spa system pack. The panels can be taken off by first remov-
ing the three black thumb screws located on each corner. On the
center panel there are four #2 Phillips screws that are covered with a
colored snap cap. Remove the caps to access the screws for removal.
3.) Fill spa at least 1” above the filters. We recommend filling
the spa through the filter area.
4.) Turn the power on to the spa. Spa will go through its priming mode. This lasts approximately 5
minutes.
5.) It may be necessary to bleed air from the pump(s) on your spa if, after start up, your spa pumps
do not operate.
Due to the nature of water flow and hydro-therapy pumps, please be advised that air locking of
pumps may occur. Master Spas has taken measures to reduce the possibility of this, but it still may
occur, especially after refilling a spa. This is not a service covered under warranty.
To relieve an airlock situation, loosen the union (see picture) on the discharge of the pump (see
arrow on picture of pump below). Water should leak out. Tighten the union and test the pump for
proper jet flow. If needed repeat process.
Pump Union
Airlock
6.) Adjust water chemistry according to the instructions provided in the “Water Quality
Maintenance Section”.
7.) Your spa water will heat approximately 4˚ – 7˚ per hour for the 240 volt spas. The Fit due to the
large body of water contained will heat approximately 1˚ – 2˚ per hour. Heating times may vary
depending on the spas size and whether the cover it installed.
RELAX AND ENJOY.
18DO NOT DIVE.
WATER CHEMISTRY TERMS YOU SHOULD KNOW
Before jumping into the Spa 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.
2. Average size spa: What is it? The national spa and pool institute (NSPI) states; 350 to
400 U.S. gallons is average. As a general rule, chemical dosages are the same for any
spa between 100 and 500 U.S. gallons. Spas over 500 U.S. gallons the dosage would be
double. Under 100 U.S. gallons would be on a case by case basis.
3. Total Alkalinity: This is a measurement of the ability of the water to resist changes in pH.
Put another way, it is the water’s ability to maintain proper pH. Total alkalinity is measured
in parts per million from 0 to 400 plus, with 80 to 150 ppm being the best range for spas.
With low alkalinity, the pH will flip, or change back and forth, and be hard to control.
With high alkalinity it becomes extremely difficult to change the pH.
4. pH or potential hydrogen: This is a measurement of the active acidity in the water, or it is
the measurement of the concentration of active hydrogen ions in the water. The greater
the concentration of active hydrogen ions, the lower the pH. pH is not measured in parts
per million, but on a scale from 0 to 14, with 7 being the neutral. In spas when ever possi-
ble, a measurement between 7.2 and 7.8 is best. Whenever possible, it should be between
7.4 and 7.6. With low pH, the results can be corroded metals, etched and stained plaster,
stained fiberglass or acrylic, eye / skin irritation, rapid chlorine or bromine loss, and total
alkalinity destruction. With high pH, the results can be cloudy water, eye / skin irritation,
scale formation and poor chlorine or bromine efficiency.
5. Shocking: This is when you add either extra chlorine (superchlorinate) by raising the chlo-
rine level above 8 ppm, or add a non-chlorine shock (potassium monoperoxysulfate or
potassium monopersulfate) to burn off the chloramines or bromamines. A non-chlorine
shock acts by releasing oxygen in the water, which serves the same function as chlorine.
The advantage to using non-chlorine shock, is you can enter the water within 15 minutes
after shocking. Using chlorine, you must wait until the total chlorine reading is below 5
ppm. One thing to remember, a non-chlorine shock will not kill bacteria or disinfect.
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).
Common names for sequestering chemicals are; minquest, stain and scale control, metal-x,
spa defender, spa metal gone, (etc.).
This manual suits for next models
15
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