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PHE and CS DESCALANT

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HEAT EXCHANGER CLEANER:<br />
<br />
PRETREATMENT TECHNICAL DATA SHEET:<br />
<br />
USE & CONTROL INSTRUCTIONS:<br />
Operating Properties (Typical):</p>
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Application:</td>
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Maintenance product – special application Circulating the product through the heat exchanger.</td>
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OperatingConcentration:</td>
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Free Acid: 0.9 - 1.7 points</td>
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Operating temperature:</td>
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Ambient</td>
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Operating time:</td>
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Typically at least 30 minutes.</td>
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Instructions for use</div>
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Recommended mixing ratio is 1 part of RXSOL DESCALANT to 7 parts of water.</div>
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For best performance, mix the solution thoroughly before use.</div>
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Recommended cleaning temperature is 50–70°C.</div>
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Higher temperatures increase cleaning efficiency.</div>
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Normal cleaning time is 3 to 6 hours.</div>
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The best way of controlling the cleaning process is to continuously monitor pH in the recirculated liquid. In general the cleaning procedure will increase the pH, which will stabilise in a few hours.</div>
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If the pH stabilizes in less than 1 hour, the deposits are probably covered with oil or grease.</div>
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To remove oil or grease deposits, it is recommended to add RXSOL  DEGREASER to the cleaning solution.</div>
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If the pH rises above 3.5 (often due to large lime deposits), an additional amount of RXSOL DESCALANT must be added.</div>
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Specific process conditions may warrant operating the above parameters outside of the typical ranges. Please consult your RX MARINE representative:</p>
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Charge Instructions:<br />
HEAT EXCHANGER CLEANER is used as delivered at ambient temperatures. If time is not a factor in the clean out, the solution can be diluted up to 50% with water.<br />
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Charge details:<br />
1) If used at the 50% dilution: Fill the clean tank approximately ½ full with fresh water.<br />
2) Set valves to proper setting for clean out<br />
3) Plumb the circulating system to the correct side of the heat exchanger Turn on.<br />
4) Slowly add 1 gallon of HEAT EXCHANGER CLEANER for every two gallons of  bath (or use the HEAT EXCHANGER CLEANER neat)<br />
5) Allow to circulate for at least ½ hour dependent on sludge.<br />
6) Turn off pump and disconnect plumbing from heat exchanger<br />
7) Flush heat changer with fresh water to remove residual acid.<br />
8) Turn heat exchanger valves back to running positions.<br />
It is important to circulate the solution through the heat exchanger for at least 30 minutes. The cleaning time will vary depending on the amount and type of sludge build-up. After the heat exchanger is cleaned, it is highly recommended that the  unit  be  flushed with water. If this step is not taken, an increase in the free acid of the operating phosphate solution might occur.<br />
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PRETREATMENT TECHNICAL DATA SHEET:<br />
<br />
Analysis Procedures:<br />
CAUTION: DO NOT PIPETTE BY MOUTH ::: Free Acid<br />
Equipment needed:::<br />
• Burette Assembly<br />
• 5-ml pipette and bulb<br />
• 250-ml flask or beaker<br />
• 100 ml graduated cylinder<br />
<br />
Reagents needed:::<br />
• Bromophenol Blue indicator<br />
• 1.0N Sodium Hydroxide<br />
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Free Acid Procedure:<br />
1. Using a pipette, pipette 5-ml of your solution into a 100-ml graduated cylinder. Fill the cylinder to the 100 ml mark with DI or RO water, then mix by up ending 2-3 times.</p>
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<br />
2. Pipette 5 ml of the above dilution to a beaker or flask; add 4-5 drops of Bromophenol Blue indicator. Then add 1.0N Sodium Hydroxide drop-wise until the<br />
solution changes from yellow to blue. Record the number of mls as points of Free Acid.<br />
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The concentration is calculated by multiplying the points of Free Acid times the HEAT EXCHANGER CLEANER factor 0.59. This equals the concentration in percent by volume<br />
of HEAT EXCHANGER CLEANER in solution. Points of Free Acid X 59 = Percent by volume of HEAT EXCHANGER CLEANER<br />
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PRTREATMENT TECHNICAL DATA SHEET:</p>
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Points of Free<br />
Acid</td>
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Concentration of HEAT<br />
EXCHANGER CLEANER<br />
in percent by volume</td>
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Addition of HEAT EXCHANGER<br />
CLEANER per 100 gallons of tank<br />
volume (based on using HEAT<br />
EXCHANGER CLEANER at 50%)</td>
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1.7</td>
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125%</td>
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0</td>
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1.3</td>
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100%</td>
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0</td>
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0.85</td>
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50%</td>
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0</td>
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0.4</td>
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25%</td>
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25 gallons</td>
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0.2</td>
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12.5%</td>
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37.05 gallons<br />
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