Bradford BALBOA M3, Installation & Operation Manual

Page: 34 / 50

Residential Spa
pg. 34
File: RES_Hottub_manual_021116
Safe Operation Instruction / Rules
For the proper disinfection and sanitation of the water, you will need to balance the interaction of pH,
total alkalinity and calcium hardness.
chart 1:
pH
Bradford Recommended Range: 7.4 - 7.6
Low pH problems:
Corrosive water
- pitting of concrete
- metals dissolve
- staining of walls
Non-Balance Problems
- chlorine loss
- vinyl wrinkles
-skin/eye irritation
Excessive sanitizer use
chart 2:
Total Alkalinity
Bradford Recommended Range: 80 - 125 PPM
Low total alkalinity problems:
Corrosive Water
- pitting of concrete
- metals dissolve
- staining of walls
Non-Balance Problems
- pH bounce
Water too sensitive to change pH
Hard to stabilize
chart 3:
Calcium Hardness
Bradford Recommended Range: 175 - 250 PPM
Low calcium hardness problems:
Corrosive water
- etching of plaster
- pitting of concrete
- dissolving of grout
- pitting of pool/spa deck
Unbalanced water
chart 4:
Sanitizer
Chlorine Ideal Range: 2.0 - 4.0
Bromine Ideal Range: 2.0 - 4.0
High pH problems:
Scaling Water
- plugged filters
- reduced circulation
- cloudy pool
Non-Balance Problems
- chlorine inefficiency
- skin/eye irritation
Decreased sanitizer efficiency
High total alkalinity problems:
Scaling Water
- plugged filters
- reduced circulation
- cloudy pool
Non-Balance Problems
- pH drifts upward
Water too resistant to change pH
Difficult to adjust pH
High calcium hardness problems:
Scaling Water
- plugged filters
- reduced circulation
- cloudy water
- heater inefficiency
Unbalanced water