Maytronics advice

[PoolStored]

Chlorine levels: The 4 ppm limit is real from the manufacturer’s side—they’re trying to protect the internal parts (seals, brushes, etc.) from chemical wear. I totally get that TFP folks run higher levels with CYA in the 70–80 range (same here, SWG pool), but just know that long-term use in 5–10 ppm could shorten the lifespan of the robot. Some people run the bot during lower FC times (early morning, evening, etc.), or just accept the tradeoff and factor in slightly faster wear over time.

@derek_from_maytronics , you said this in another thread, and I didn't want to hijack the thread.

Glad you are here! Nice to have people here from manufacturers. I've been curious on this advice...maybe you can help reconcile. See graph below.

• The Dark Blue lines are the range of HOCl at 1 and 4ppm (Maytronics recommended range), which equates to about 0.6 to 1.05ppm HOCl.
• The thin green line represents the low end of the TFP recommended range for all CYA level, which is about 0.05 ppm HOCl.
  • This line also represents the lowest level of sanitizing HOCl required to kill algae.
• The top dark green line is the top of the TFP recommended range for 30 ppm CYA which is about 0.1 ppm HOCl.
• The bottom dark green line is the top of the TFP recommended range for 70ppm CYA which is about 0.06 ppm HOCl.
• Note: HOCl is the active (unbound) form of FC, all the other chlorine is bound to CYA.

The TFP ranges for FC, based on CYA, form and maintain about 10 times lower HOCl levels than the Maytronics recommendation of 1-4ppm with 0 CYA (which is what I think Maytronics is protecting against, no?).

What is it about the higher FC levels, and associated CYA, that causes chemical wear? It can't be HOCl.

Thanks for any insights!

 

[Jimrahbe]

I don't care if he is from Maytronics.. His statement is a pile of Bull Feathers..

Jim R.

 

[HermanTX]

Thanks @PoolStored It is a great way to look at the real effect of FC.

 

[JamesW]

People in the industry need a reference for the chemical levels and they just do not have one that they can point to to justify the FC/CYA ratio.

Everyone from Manufacturers to Municipal Code writers just copy and paste standard industry boilerplate that originated 50 years ago.

It’s really quite ridiculous and unfortunate.

It’s all circular logic where everyone just copies everyone else because that is what everyone agrees on.

No one is going to take the liability of going against the universally accepted consensus.

 

[JamesW]

The most authoritative reference is apsp-11.

It describes the levels as well as the rationale for those levels.

Everyone else is just going to copy this boilerplate because it is the easiest and safest thing to do.

ANSI/APSP/ICC-11 2019 American National Standard for Water Quality in Public Pools and Spas

The ANSI/APSP/ICC-11 2019 American National Standard for Water Quality in Public Pools and Spas provides recommended minimum guidelines for the specifications for recreational water quality parameters in public pools and spas. An Appendix A includes explanatory sections about the values for the...

issuu.com

 

[Lake Placid]

People in the industry need a reference for the chemical levels and they just do not have one that they can point to to justify the FC/CYA ratio.

Everyone from Manufacturers to Municipal Code writers just copy and paste standard industry boilerplate that originated 50 years ago.

It’s really quite ridiculous and unfortunate.

It’s all circular logic where everyone just copies everyone else because that is what everyone agrees on.

No one is going to take the liability of going against the universally accepted consensus.

The most authoritative reference is apsp-11.

It describes the levels as well as the rationale for those levels.

Everyone else is just going to copy this boilerplate because it is the easiest and safest thing to do.

ANSI/APSP/ICC-11 2019 American National Standard for Water Quality in Public Pools and Spas

The ANSI/APSP/ICC-11 2019 American National Standard for Water Quality in Public Pools and Spas provides recommended minimum guidelines for the specifications for recreational water quality parameters in public pools and spas. An Appendix A includes explanatory sections about the values for the...

issuu.com

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Agreed wholeheartedly, the ship of ignorant, misinformed bureaucracy (and the lobbyists fighting against with financial interests) takes a long, long time to turn around. Fortunately through efforts of folks like @chem geek things are changing but very slowly. Code here actually allows for up to 8 ppm FC before mandated action in a public pool….

 

[JamesW]

2024 CPO Manual
Published on Mar 20, 2024

2024 CPO Manual

This fundamental training and reference manual is for aquatic professionals, including operators, health officials, service technicians, retailers, property managers, and manufacturers. Industry leade

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[Lake Placid]

View attachment 648903

2024 CPO Manual
Published on Mar 20, 2024

2024 CPO Manual

This fundamental training and reference manual is for aquatic professionals, including operators, health officials, service technicians, retailers, property managers, and manufacturers. Industry leade

issuu.com

Yes sir….out of necessity have had to sit through classes for certification for professional reasons. Some good things are taught, and sometimes I just grit my teeth and roll my eyes. Thank goodness the classes and certs are virtual so my reactions are noticeable.

 

[ajw22]

View attachment 648903

2024 CPO Manual
Published on Mar 20, 2024

2024 CPO Manual

This fundamental training and reference manual is for aquatic professionals, including operators, health officials, service technicians, retailers, property managers, and manufacturers. Industry leade

issuu.com

CPO Training - Further Reading

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