Chemical Feed Systems and Control Equipment
Chemical feed systems can be a computerized and set-up to sanitize your swimming pool or spa automatically. Most of these feeder systems can analyze your pool water and make the necessary chemical adjustment accordingly. These industrial type chemical feeders can be of a simple make up or they can be of a very complex make up.
These feeders can be set up to monitor the chlorine content, your pH level, and also the temperature of your swimming pool or spa.
Once your pool parameters are set on any type of automatic feed system, they will automatically make the necessary chemical adjustments as needed.
These adjustments can be in the form of chlorine addition, acid base additions, or any other form of chemical treatment.
However simple or complex your computerized feed and control systems may be, you will be required at some point to physically handle your pool chemicals.
So...there are certain rules that must be followed when you are manually handling any type of pool chemicals. As a safety precaution, make sure that you read, follow, and understand the instructions that are printed on the labels of the container. It is a must that you wear the required proper protective gear at all times.
A lot of the pool chemicals used in the swimming pool/spa industry today, are very dangerous and should always be handle with extreme care. For your added safety, you should never mix any two pool chemicals together. This safety precaution applies to all types of pool chemicals - no matter if they have the same name.
The main reason for this is - that not all manufacturers use the same ingredients in their products. Thus mixing pool chemicals together can be very dangerous. Feeding of chemicals that is done by hand is usually acceptable for home swimming pool and spa (treatment) dosing.
Manual chemical dosing of commercial swimming pools is only allowed, when the pool or spa is closed to its users. This is usually when you have to carry out a shock treatment. This we usually referred to as Super chlorination.
You must always allow sufficient time for the pool chemicals to dissolve and disperse before re-opening any commercial recreational facility. Swimming pools and spa chemicals usually have some characteristics that can be harmful to your pool operating equipment. For this reason, your pool chemicals should be added downstream from all your swimming pool or spa equipment.
Choosing the correct chemical feed system!
It is extremely important that your chemical feed and control systems be of the correct size. This is vitally important due to the amount of pool water that it will be dosing or treating chemically. If you use an industrial chemical feed system that is over-sized, there is a huge possibility that you can over-feed your pool sanitizer or disinfectant.
If you use a feeder system for your chemicals, which is too small, chances are that your pool water may be unsanitary or it may develop an undesirable pH level.
Reason for this is that the feed system can not keep up with the demands of your pool or spa system/s.
The correct size mechanical feeders that you will need for your chemicals, is often determine by the public health code for your individual state.
Many of the automatic feeders that are used in pool dosing, are governed by these health codes. They are capable of delivering chlorine at a constant rate...once they are set up correctly. This allows you the operator, the capability for providing a specific volume of pool chemical/s for a giving volume of water.
Ensuring that your chemical feed system is approved and tested!
Adding chemicals to pool or spa manually can be a very time consuming task. Nevertheless it has to be done. This will ensure that you are providing a safe water environment for your pool bathers and that your pool water chemistry is properly balanced. Using the an automatic feeder that is of the right size, makes this task a whole lot easier.
So the question is? How do you recognize a good feeder from the start? Firstly a good feeder is tested and then listed with the NSF® International (NSFI). Further indication that your chemical feeder is approved and tested by the NSFI, is a copy of their logo on the name plate of the device.
Their logo will also be printed in the manufacturer's installation and operational manual. The information on the name plate of your positive displacement feeders should also indicate the amount of chemical the device/s can release at any one given time.
This information is usually listed or recorded as GPM (Gallons Per Minute) or GPH (Gallons Per Hour).
As a rule of thumb, whenever a chemical feed system has an NSFI listing, it means that the materials used to construct the feeder system have been tested.
Why is this important to you? Easy!
It means that the materials will not deteriorate or break down in the presence of the pool chemical being fed through your pool or spa system. Cyanuric acid, water clarifiers or flocculants, and diatomaceous earth (DE) are just a few of the pool chemicals that can be delivered through a system that is set up a automatic chemical feed.
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