Bob's 20 Most Common Pool Problems
 
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Pool Operational Troubleshooting Guide
20 Most Common Problems

This guide is provided for reference only.
Diagnosis and repairs should be completed by a qualified technician.

If you have other questions please feel free to e mail Bob at bdooley@watersfine.com

Problem

Possible Cause

Pump will not come on

1. Breaker turned off or tripped. Power is off.
2. Switch at pump is off.
3. Bearings locked up
4. Burned out motor/electrical failure.

 

Motor is noisy

1. Bearings corroded.
2. Impeller clogged, not allowing water to flow.
3. Pump is sucking air.
4. Pump basket full of debris/dirty filter.

 

Pump will not prime

1. Air leak at inlet plumbing
2. Clogged/broken impeller

 

Pool light will not turn on

1. Power off. Breaker tripped.
2. GFCI tripped.
3. Burned out bulb.
4. Bad switch.

 

Pool light turns on momentarily, then shuts off.

1. Shorted wiring.
2. Water inside light assembly.

 

Filter pressure high

1. Dirty filter. Clean or backwash.
2. Line restriction. Valve closed
3. In-floor system is locked up

 

Filter pressure low

1. Clogged pump basket.
2. Pump sucking air
3. Restriction in suction line or cleaner line.

 

Pool cleaner will not move around pool

1. Clogged pump basket. Dirty filter.
2. Valve not adjusted properly.
3. Restriction at pool cleaner.

 

In-floor pop-up heads will not cycle

1. Worn actuator assembly.
2. Low water flow.
3. Worn pop-up heads.
4. Valve not adjusted properly.

 

Dirt on floor/cloudy water after vacuuming

1. Filter blow-by. Internal damage.
2. Old sand. Channeled and not filtering.

 

Low suction when vacuuming

1. Clogged pump basket
2. Dirty filter.
3. Valve not adjusted properly

 

Water around pump while operating.

1. Leaking plumbing.
2. Worn pump seals.

 

Water hot or boiling in pump pot.

1. Air leak. Not sucking water.
2. Dirty pump basket/clogged impeller.

 

Heater will not light

1. Low gas pressure in lines or tanks.
2. Bypass valve not adjusted properly.
3. Internal failure.

 

Heater "knocking" and shutting off

1. Low water flow.
2. Restriction inside heater.
3. Valve not adjusted properly.

 

Bubbles coming in pool

1. Pump sucking air and delivering to pool.
2. Leak at shutdown, filling filter with air.

 

Water level dropping

1. Automatic water leveler clogged. Water evaporating.
2. Leak at pool lines or shell.

 

Water level rising

1. Automatic water leveler float broken.
Water filling non-stop.
2. Excessive rain.

 

Skimmer lid blows off deck when pump shuts off

1. Air leak

 
 
Questions reguarding pools
 
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Q: Why does my pool need chemicals?

A: The sun triggers the growth of tiny bacteria and algae. Filtration and circulation of the water does not do enough to keep the pool water clean and clear.

Q: What chemicals are necessary for maintaining a clear pool?

A: Chlorine, pH increaser/decreaser, alkaline, calcium hardness, and algaecide. Some people perfer to use other sanitizers to take the place of chlorine, such as Softswim or Baquacil. Chlorine (or Softswim/Baquacil) sanitizes your water. pH, alkaline, and calcium also play a major part in the quality of your water. If not balanced properly you may notice burny/itchy eyes, scale build up around water lines and inside equipment. There are many other chemicals you may use to aid in keeping your water crystal clear. For example, water clarifiers and scum digesters, used weekly will assist in keeping your water clear.

Q: What does pH do?

A: Most people refer to pH as a chemical. pH is not a chemical. pH refers to the acidic/alkaline level of you pool water. The reason it is important is that unless your pool is within a certain pH range, your chlorine can't chemically interact with the bacteria and algae it's supposed to kill. People often think that chlorine is the cause of itchy blood-shot eyes, but actually the most common cause of it is improperly balanced pH. Other harmful effects of improperly balanced pH: cloudy water, corrosion or scale build up on equipment, and poor sanitizer efficiency. The proper pH range should be between 7.2 and 7.6.

Q: What does alkalinity do?

A: Alkalinity is not a chemical. Like pH alkalinity refers to the acidic/alkaline level of you pol. Alkalinity stabilizes the pH, causing you do less adjusting of your pH level. The alkalinity level should be between 80 and 120.

Q: How should I apply chemicals to my pool?

A: Because not every chemical is the same you should always read the label for application instructions. But here are a few tips to make it a little easier. We recommend that chlorine tablets be added into an automatic chlorinator but you may also place them in your skimmer basket. For granular chlorine(shock) please refer to label. Some maybe broadcast into the pool and some require dilution in water to prevent discoloring of pool surfaces. Most pH, alkalinity, and calcium balancers may be broadcast directly into the pool, but very large doses my have to be divided up. Lastly, NEVER mix any chemicals together!

Q: Should I use a water clarifier in my pool?

A: While it is not a requirement it is not a bad idea either. A clarifier is designed as an aid to the efficient operation of the filter by coagulating most materials, which cause cloudy and hazy water, into larger particles that are removed by the filter. Because the presence of these materials increase the disinfectant demand, the use of a water clarifier decreases pool maintenance costs.

Q: What causes the "ring" around my pool?

A: The accumulation of oils and dirt from bathers is the biggest cause. Using a cleaner specifically designed for pools can clean it off. Household cleaners do not contain the needed balance of both oil/grease cutters and scale dissolving ingredients. In fact, these cleaners can actually dull a tile line or fade a liner due to abrasives or cause unsightly foaming. Even worse, they may react with your sanitizer. Another helpful hint would be to regularly use an enzyme based product in your pool. These biodegradable products will control grease and oil before it builds up.

Q: What are enzyme based cleaners and how do they work?

A: Basically, enzymes are substances that speed up chemical reactions. In the case of enzyme based cleaners, they are designed to speed up the process of breaking down oils, proteins, etx. that may be in your pool. Enzymes will break up very large particles into smaller ones that can be handled more easily by your sanitizer. Regular use of an enzyme will help reduce scum line buildup and free up your sanitizer for the work it was intended to do.

Q: What are the advantages to a salt versus a chlorine system?

A: Actually a salt system is still a chlorine system. The salt system just breaks down the salt to make the chlorine that sanitizes your water. This prevents the need to have buckets of tablets and shock sitting around. While this system take a lot of the work off your hands, you still need to make sure the water is tested on a regular basis. There is also an upfront cost for the systems. But you will see that it pretty much pays for itself in a matter of a couple years from the savings you get from not buying tablets and shock. Also our Mineral Springs system aid in maintaining other parts of your water chemistry that other systems don't. Such as helping stabilize your pH, adding borate(algae inhibitors), and clarifiers to your water.

Q: How often does the salt cell in my salt chlorinator need to be cleaned?

A: It varies from system to system. You should consult your owners manual for your system. For straight salt systems this may need to be done every 3 weeks or so. For those of you that own one of our Mineral Springs systems this only needs to be done every 6 months. The reason for the difference is because Mineral Springs isn't just salt. It also contains scale inhibitors that prevent the normal buildup on the cell. To clean the cell mix a solution of about 10 percent muriatic acid with water and soak 5 to 20 minutes or until the cell is clean again.

Q: When is the best time to shock the pool?

A: Nighttime. The sun can cause shock to lose its effectiveness in less than 3 hours.

Q: When I shock my pool should I use a chlorine or non-chlorine shock?

A: This really depends on the condition of your pool. If your pool is clear and holding a suitable free chlorine level you may use a non-chlorine shock. This allows you to be in your pool within minutes. If your pool is cloudy, green, or not holding a free chlorine you will need to use a stronger chlorinated shock. There are also lightly chlorinated shocks that have a small amount of chlorine but still allow you to swim in 15 minutes.

Q: Do I need to add a sanitizer regularly?

A: Yes! Failure to do so can cause very unsightly and unsafe swimming conditions. A proper sanitizer level should be maintained at all times.

Q: How often should I run the filter?

A: Ideal run time would be 24/7. If you don't want your pump running that long a minimum of 8 hours will be sufficient.

Q: Should I run my pool pump during the day or night?

A: Because the sun draws chemicals from the pool it is best to run you pool pump during the hottest time of the day.

Q: Is it safe for me to drain my pool?

A: NO! You should never drain your pool. This is a job for a licensed, experienced and insured professional. Concrete & fiberglass pools can float out of the ground like a huge boat. The liners in vinyl pools can shrink in a matter of a few hour.

Q: What should I do with my pool if there may be a freeze?

A: It is best to drain the water from all of your pool equipment. Pumps, filters, chlorinators, heaters and solar panels are all equipped with freeze plugs or valves to drain the water from them. Running the pool pump can protect the equipment from freezing but is useless if the power goes out for an extended period of time.

Q: What is the normal water pressure for my filter?

A: Each pool system has different water pressure tolerances. Please refer to your original owners manual and/or startup instructions to identify the range of proper pressure for your filter type. If you believe the pressure is too high or too low, check and clean out all debris from the baskets. Check to see if all your equipment valves are set properly and confirm that the pressure gauge returns zero when the equipment is off. If it does not fall back to zero you may need to replace your pressure gauge.

Q: How often should I lubricate my backwash valve O-rings?

A: The standard push/pull backwash valve is a plunger type valve commonly found in sand systems. Normally, there are four o-rings in this type of valve. If these rings become damaged or dried out, two things will occur. Unfiltered water may return to the pool and/or the pool will begin to lose water out of the backwash line. The same would also be true for 4&6-way Multiport valves.

Q: What type of maintenance does a sand filter need?

A: A sand filter does need to have the sand changed every 3 to 5 years. If you have moved into a new house and don't know when the sand was last changed or don't remember, it's a good idea to go ahead and do it. It's a very inexpensive thing to do. In the long run clean sand saves you on the cost of chemicals you use to keep the water clear. Bad sand in a filter can cause many problems like higher than normal pressure, inadequate filtration, higher energy bills, improper backwashing, cloudy or green water, and an unfit swimming environment. If you are thinking of changing your sand you may want to think about upgrading from sand to a more efficient media. There is a new filter media called ZEOBEST. It filters 10 times better than sand. You only have to backwash half of what you would with sand. This save on water costs and chemical loss and most importantly your time. More information on this is available at any of our stores. 

Q: How do I know when its time to clean my pool filter?

A: Normal, periodic rinsing or backwashing will remove most of the dirt from a basically clean filter. However, over a period of time grease, oils and scale can attack and build up inside the filter. When this occurs you will notice reduced circulation and cloudy water that won't clear up. Any time you experience these symptoms you should clean your filter. Ideally you should chemically clean your filter twice a year. Most people choose to do this in the middle of the season and then again at closing time.

Q: Why am I getting sand in the pool?

A: You may get sand coming back to your pool from the swimming pool filter if the laterals in the filter are cracked or broken. Also, if your backwash valve orings are destroyed some sand will pass through back into the pool.

Q: Why am I getting DE back into the pool?

A: Damaged grids or internal filter parts are a very common cause of this. It can be caused by a bad valve gasket if you add your DE through your skimmer. You can also get DE back into the pool while the system is off. This happens because there is a small air leak in the system and when this happens the tank is actually siphoning down. The DE from the top of the tank is working it's way back downwards through the system, back through the pump and out of the main drain and skimmers. This should be fixed immediately.

Q: How often should I clean the grids on my Diatomaceous Earth filter?

A: Most manufacturers recommend that the grids on the Diatomaceous Earth (D.E.) filter should be cleaned on an annual basis. This type of filter utilizes D.E. powder to strain debris from the cloth-covered grids. The filter must be pre-coated for proper filtration. To maintain the D.E. filter, disassemble the filter, clean it thoroughly with a garden hose, inspect grids for tears and holes, and re-coat the filter grids with a combination of D.E. and water.

Q: Why are there air bubbles coming out of the return fittings?

A: This could be caused by many different things. There could be a leak on the suction side of the pump(everything before the motor including the pump pot), the pump lid may not be on correctly or there may be debris stuck between the lid oring and the housing. The skimmer weir door may be stuck open or the water level may not be high enough causing the skimmer to suck air. This is very bad for your pump and should never be let like this.

Q: What does vacuum to waste mean?

A: When you "Vacuum to Waste" you are pumping the debris you vacuum out of the pool and sending the water to the waste line, and not through thepool filter. This method removes a large amount of water from the pool in a short time so be sure the pool is full before you begin. This is used for large amounts of debris and dirt. This method will only work for circulation systems with a 6-position filter valve. If you have an older "push/pull" style filter valve you must vacuum through the pool filter.

Q: Why is my pool motor so noisy?

A: More often than not this is caused by bad bearings. Depending on the age and condition of the motor sometimes the bearings can be replaced for a very minimal cost. If they can't, you can simply replace the motor part instead of buying a whole new pump. This can be done in our stores by one of our services technicians or we could schedule a service call for you. It could also be something as simple as trapped air in the filter or debris in the impeller.

Q: My pool lights are not working!

A: Check the circuit breaker and reset if necessary. Check your G.F.C.I. (Ground Fault) and reset if necessary. You may also want to check the bulb and if you have a control system check the batteries.

Q: Why is my pool cleaner not working?

A: This could be caused by a number of different things. Clogged pump impeller, dirty filter, dirty screen inside the wall fitting piece, valves not set correctly, etc. It could also be caused be old worn out parts that need to be replaced.

Q: How does Lake Norman Pool and Spa compare with other pool companies?

A: We are very competitive in price and quality of service. Customer feedback says we are the best at what we do. Not every company cares enough to treat you the way we believe our customers should be treated. We have a very talent and experience retail and service staff.

Q: Can you guys just come out and show us how to do everything?

A: You bet! Our service department can either come out and go over everything with you on site, or you can come into any of our retail locations. And we are always just a phone call away to answer any questions that may come up. We also offer a pool school at each of our 3 locations every spring, where we go over water balancing, routine maintenance, and proper filtration.

Q: What kind of maintenance programs do you offer for my pool?

A: We offer weekly pool service, where we come out to your pool once a weed to clean and put the sparkle back into your pool. Our full weekly service includes basic balancing chemicals(pH, alkalinity,calcium), balancing and testing of the water, vacuuming, brushing steps and sides, skimming the surface of the pool, backwashing as needed, and ensuring that your equipment and cleaner are running properly(any repairs are not included). We take all the work out of pool ownership for you.

 
 
Other FAQs
 
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You notice that your pool is losing water...

There are 4 possible reasons why you are loosing water

1.    Your filter may be leaking water through the backwash hose due to a warped gasket in your multi-port. Replace the gasket in your multi-port.

2.    The line for your main drain may have cracked. Jump into the pool and plug up the main drain.

3.    A suction or return line may be cracked. This is BAD! Read below and contact a professional to have the lines pressure tested.

4.    There may be a rip in your liner, a leak in the light or there may be a broken step or step gasket. This is BAD! Read below and contact a professional for leak detection.

  • If the pool water level goes down to the bottom of the skimmer and stops, this usually means that it is a suction line leak, most likely directly under the skimmer. We suggest contacting a professional to repair something like this.
  • If the pool water level goes down to the bottom of the return jets and then stops, this usually means that it is a return line leak, most likely directly by the wall jet return fitting - but it could be anywhere in the return line. We suggest contacting a professional to repair something like this.
  • If the pool water level goes down to the top, middle or bottom of the light unit, this usually means that the light is leaking. This is usually the fitting in the light niche where the metal or plastic conduit pipe is attached to the metal niche. We suggest contacting a professional to repair something like this.
  • If the water level goes down to any other level on the side walls and then stops, this usually means that the leak is in the liner on the side wall or possibly in the step unit gasket. Inspect the pool visually around the water level and check to see if you can see a hole. Check the area where the LADDER comes in contact with the liner. This is a very common leak point! If you cannot clearly see a leak hole, we suggest contacting a professional to locate & repair the leak.
  • If the water level goes down past the side walls, then it usually means that the leak is in the pool floor. This is bad! You do not want all the water to drain out of the pool. It is bad for the liner and very bad for the pool walls - you do not want the pool to fall in! If you see that you are quickly losing all the water in your pool, put a hose in the pool, start to refill it and contact a professional to locate & patch the hole.
 
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How to Backwash your D.E. / Sand Filter 

1.    Turn off pump

2.    Turn Multi-Port valve into the "Backwash" position

3.    Open backwash valve (if any: usually not)

4.    Turn on pump

5.    Watch waste shoot out of filter (run pump until waste comes out clear)

6.    Turn off pump

7.    Turn Multi-Port valve into the "Rinse" position

8.    Turn on pump

9.    Let run for 30 - 45 seconds

10.                       Repeat steps 1 through 8 until the waste comes out clear every time

11.                       Close backwash valve (if any)

12.                       Check pool water level after backwashing and add more if necessary

13.                       Finally, add D.E. into skimmer while pump is running (Add the amount of D.E required by the filter)

Do not add D.E. to a sand filter!

NEVER ADD D.E. BEFORE BACKWASHING!!!

Add D.E. to skimmers SLOWLY! Don't clog them!

 

 
 
Safety
 
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Stuff all Pool Owners Should know

Pool owners should be concerned about the safety around their pool area. Pools are supposed to be fun but they do require some responsibility. Below is a list of possible dangers that every pool owner should be aware of. We've provided information that should help prevent accidents from happening. We hope these safety tips will make your pool area a safer environment so you can relax and enjoy your backyard more comfortably.

 

·  A pool with an improper chemical balance can be a health hazard. Over-chlorination can cause red eyes, hair discoloration, skin irritation or even hospitalization. Test the water before swimming especially if chemicals were recently added.

 

·  Drowning can occur to children or inexperienced swimmers that accidentally wander off into the deep end. Floating dividers help prevent this by separating the deep end from the shallow end. Always have an experienced swimmer by the pool when it is being used.

 

·  Private pools don't require depth markings but they're a good idea to help prevent someone from diving into shallow water.

 

·  Anything that can snag a swimmer's hair or clothing beneath the water level could result in drowning.

 

·  The pump pulls in water by means of a strong vacuum through the main drain. That vacuum is so strong that anyone lying on the main drain at the bottom of the pool while the pump is running could be held down by a force of up to seven hundred pounds (that's right, 700 pounds). This is enough force to rupture the skin or even trap an adult underwater resulting in drowning. It's OK to swim by the main drain but don't lie on top of it!

 

·  Improper use of diving boards and slides can cause serious head injuries or even death. Always use them responsibly.

 

·  Chlorine tablets are put into the skimmer baskets for pools without chlorinators. When the pump is not running, the water in the skimmer baskets becomes still and allows the chlorine tablets to dilute. When chlorine dilutes into a small volume of water, that water becomes highly concentrated with chlorine. Someone could breath it in, get it in their eyes or even ingest it while swimming in the pool. Pets and animals could drink out of that skimmer basket if there is no lid on it. A chlorinator is the best solution for this problem.

 

·  Chlorine and shock can cause fire or explode if mixed with other chemicals, liquids or oils.

 

·  A small whiff of shock or chlorine can knock you unconscious. Always keep pool chemicals stored in a safe place.

 

·  The anchors for safety covers can cause someone to stub their toe if they're not totally set into the ground.

 

·  Skimmer baskets for Inground pools with broken lids or missing lids can cause someone to sprain their ankle if walked on.

 

·  Extension cords and appliances like televisions and radios that are close to a pool can be a threat to swimmers. Every power supply circuit for electrical equipment around the pool area should include a Ground Fault Interrupter (GFI). A GFI will avoid potential danger by shutting off power if a sudden power surge occurs. This protects swimmers from dangerous and possibly fatal electrical shocks.

 

·  Heaters get hot and could burn someone's hand or leg when direct contact is made.

 

·  When dealing with gas heaters make sure that the heater is in a safe environment far away from any debris such as dry leaves, spray cans, chemicals or any combustibles. Make sure that there is no leakage of exhaust gases into any building. This is especially important if the heater is installed indoors. Improper venting can cause serious illness or death from carbon monoxide poisoning. If you suspect a gas leak or smell gas, shut off the heater, turn off the gas valve and call the local gas company to have a professional fix the problem.

 

·  Enclosing a pool with a fence with self-closing and self-latching gates helps keep children, animals, and non-swimmers out of the water when there's no one around. Most communities require this by law.

 

 
 
 
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 DROWNING PREVENTION TIPS AND LAYERS OF PROTECTION

SUPERVISION

1.     Never leave a child unattended near water in a pool/hot tub, tub, bucket or ocean.  THERE IS NO SUBSTITUTE FOR ADULT SUPERVISION.

2.     Designate a “Water Watcher” to maintain constant watch over children in the pool/spa during gatherings.

3.     Do not use flotation devices as a substitute for supervision.

4.     Remove toys from in and around the pool/spa when not in use.  Don’t let kids play in the pool/spa area.

5.     Do not consider children “drownproof” because they’ve had swimming lessons.

 

PROTECTIVE LAYERS

6.     Keep a life-saving ring, shepherd’s hook and CPR instructions mounted at poolside

7.     The home should be isolated from the pool with a fence at least 6’tall with a self-closing, self-latching gate.  The gate should open away from the pool, and should never be propped open.  Gate latches should be out of reach of children and on the pool side of the gate.

8.     Doors and windows should be alarmed to alert adults when opened.  Doors should be self-closing and self-latching.

9.     Pool alarms and child wrist alarms are another layer of protection because they can alert adults when a child enters or falls into the pool.

10. Power-operated pool safety covers are the most convenient and efficient.  Solar/floating pool covers are NOT safety devices.  Hot tubs should have solid covers latched and locked.

 

PREVENTION

11. Ensure your swimming pool and its' parts/equipment are up to date with the local codes and standards.

12. Never leave the pool to answer the phone, answer the door, or to get a towel.  Always take the children with you.

13. Keep a phone at poolside so that you never have to leave the pool to answer the phone, and can call for help if needed. 

14. Post emergency numbers on the phone or near the pool so can be easily viewed in case of emergency.

15. Don’t use floating chlorine dispensers that look like toys.

16. Instruct babysitters about potential pool hazards, and emphasize the need for constant supervision.

17. Never leave water in buckets or wading pools.

18. Keep safety covers and barriers secure and closed at all times.

19. To keep children from climbing over fencing and gates keep items that children can climb on away from the gates and fencing that surround the pool.

20. Never leave a swimming pool safety cover partially off or on the pool.  Completely remove safety covers to swim and completely replace them when not using the pool. 

21. Ladders and steps on above ground pools should be secured and locked or removed when the pool is not in use. 

22. Responsibilities of pool ownership include ensuring children in the home learn to swim and that adults know CPR.

23. Learn CPR and rescue breathing.

24. If a child is missing, always check the pool first.  Seconds count.

25. Have an emergency plan – Don’t Stall!  Yell for help! Get the child out of the pool!  Call 911!  Begin CPR!  If you do not know CPR, 911 operators can help.  Practice your plan regularly.

 

OTHER SAFETY MEASURES

26. Lightning can be dangerous to swimmers in and around the pool.  Good rule of thumb is “If you can hear it, clear it.  If you can see it, flee it.”  If in doubt, GET OUT!

27. Diving:  Do not dive before checking the depth with your “feet first.”  Do not dive into above ground pools.  Do not dive from the side of a pool.

28. Always be aware of electrical hazards around water.  Extension cords should not be left near swimming pools.

29. Keep the pump and equipment area of your swimming pool clean and free of debris and litter.  Motors are hot and potentially fire hazards if debris is piled on or around them.

30. Do not have older siblings watch younger children in the water.  They are not trained or mature enough to be given such a responsibility.

 

Know where children are at all times.  When they are supposed to be near the pool, make sure that there is at least one adult – undistracted by anything around him or her – whose sole job it is to keep an eye on the kids.  You can teach children how to swim, and you can install as many barriers as you wish around a pool.  But the only way you are going to prevent children from drowning is to keep an eye on them at all times.

 

 

 

 
 

Information

Retail Stores

Statesville

411 S Center St
(704) 878-6699
(704) 873-0581 Fax

Mon.-Fri.  9 to 7
Saturday 9 to 4
Sunday Closed

Cornelius

18926 Statesville Rd.
(704) 655-0899
(704) 439-2021 Fax

 Mon.-Fri.  10 to 7 
Saturday 9 to 4
Sunday Closed

Denver

465 Hwy. 16 N.
(704) 483-8260
(704) 483-8283 Fax

 Mon.-Fri.  10 to 7 
Saturday 9 to 4
Sunday Closed


Service

(704) 871-0641

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