
Section 3c –OPERATION
Monitoring and Maintenance
Water Chemistry Parameters-VERY IMPORTANT NOTE! Your Mursatt Gen-8-R Model Digital 36 is designed to provide Sanitizeron
a daily basis. We recommend the following water chemistry ranges and periodic checks to monitor your systems efficiency. Always
follow local health requirements. Check the expiry date of the test kit as test results may be inaccurate if used after that date.
DailyChecks: MonthlyChecks:
Free Chlorine: 1.0 –3.0 PPM(pool) Calcium Hardness: 200-300 PPM(Pool) 150-200(spa) Salt Residual: 2800 –3200PPM
Or Bromine: 1.0 –3.0 PPM(pool) Total Alkalinity: 100-120PPM(Pool & Spa) Saturation Index: ± 0.3 pH of saturation
Free Chlorine: 3.0 –5.0 PPM(spa) Cyanuric Acid: 30 –100 PPM(Pool & Spa) Visual Cell Inspectionfor wear, scale or debris
Or Bromine 3.0 –5.0 PPM(spa)
pH: 7.2 –7.8
CHLORINE/BROMINE REQUIREMENTS: During Peak Sanitizer Demand (rainy season or heavy bather usage) it may be
necessary to increase your sanitizerlevel by increasing your Output Level setting and/or pump run time. Conversely, during
Low Sanitizer Demand, you can decrease your Output Level to a lower setting. For extremely Heavy Sanitizer Demand or to
boost your sanitizer levels quickly, you canBoostthe system or supplement with a Potassium Monopersulfate based shock.
NOTE: During cold-water conditions, below 15.6°C (60°F), Sanitizer demand is reduced significantly. For colder
climate regions with freezing temperatures, contact your local pool professional for proper pool winterizing instructions.
CAUTION: Excessive chlorine levels can cause corrosion damage to stainless steel rails, ladders, heater heat exchangers, light
faceplates and other metallic equipment. Avoid over saturation of chlorine levels. The output setting must be sufficiently high
to maintain the recommended chlorine residual in the swimming pool/spa water. Provincial and/or municipal regulation must
be followed.
pH: When your pH falls below the accepted range, your Sanitizeris used up very quickly and can be damaging to your
equipment. For pH levels higher than the accepted range, your Sanitizerbecomes much less effective and will work harder to
keep your pool sanitized. Improper pH also contributes to the strong smell, red eyes, dry itchy skin and brittle hair conditions
usually associated with “too much Chlorine”.
CALCIUM HARDNESS AND TOTAL ALKALINITY: Your Mursatt Gen-8-R Model Digital 36 provides 100% pure sodium
hypochlorite and does not affect the calcium hardness or total alkalinity levels. Maintain and balance only as needed.
CYANURIC ACID (STABILIZER/CONDITIONER): This chemical goes by either trade name and allows your chlorine
residual to last longer by protecting it from the UV degradation of the sun. In outdoor pools/spas with low or no Cyanuric acid,
the chlorine being produced will be used up as quickly as it enters the pool. Check and maintain your cyanuric acid levels at
the same time as your salt level, as these tend to deplete at the same rate. Regulations may exist regarding the use of cyanuric
acid; please consult your local authority. NOTE: For Bromine or indoor pools, it is not necessary to add stabilizer.
SALT RESIDUAL: Your Mursatt Gen-8-R Model Digital 36 works most efficiently with salt levels between2.8 –3.2 gm/l (2800-
3200 ppm). If it falls below 2.8 gm/l (2800 ppm), determine the salt level and adjust according to the SALT REQUIREMENT. Low salt
will cause premature deterioration of the Cell blades. Maintaining high salt levels above recommended range can contribute to
corrosion of pool/spa equipment. Salt levels exceeding the recommended concentration can be reduced by diluting the
pool/spa with fresh water.
BROMINE RESIDUAL: Along with the normal Salt level, add 0.45 kg (1 lb) Sodium Bromide (NaBr) per 7500 L(2000
gallons)of water. Your Mursatt Gen-8-R Model Digital 36 will now generate Bromine to sanitize your pool. Maintain your bromine
level by checking your salt level. Once your salt falls below the recommended range, we suggest you add 0.45 kg ( 1 lb)sodium
bromide with every22.5 kg (50 lbs)of salt added. NOTE: Always use a registered or scheduled source of sodium bromide.
SATURATION INDEX (Si): a formula used to ensure that your total water chemistry does not fall into a scale forming or
corrosive condition. Either condition can cause premature damage to the Cell, equipment and exposed pool/spa surfaces.
Have your water professionally tested periodically according to the Saturation Index or use this chart to determine your water
balance. Si = pH + TF + CF + AF –Constant
Temperature TF Calcium Hardness CF Total Alkalinity AF TDS Constant
15.6C 60F 0.4 150 1.8 75 1.9 0 –1000 12.1
18.9C 66F 0.5 200 1.9 100 2.0 1001 -2000 12.2
24.4C 76F 0.6 250 2.0 125 2.1 2001 -3000 12.3
28.9C 84F 0.7 300 2.1 150 2.2 _____
34.4C 94F 0.8 400 2.2 200 2.3 _____
39.4C 103F 0.9 600 2.4 250 2.4
Test your water for pH, Calcium Hardness, Total Alkalinity and TDS levels. Use the equivalent Factor in the Si equation.
Si = +0.3, balanced Si above + 0.3, scaling, staining or cloudy water conditions.
Si below -0.3, corrosive to metals, etches/deteriorates plaster finishes or skin irritating conditions.
DO NOT add pool/spa chemicals directly to the skimmer. This may damage the cell.