4 HOW LONG DOES IT TAKE?
Many variables enter here: scale type. age, temperature, etc. Some units have shown results in the first days of operation; others may take several months. The action is related to the age of the scale, its composition, the conductivity of the fluid, and its velocity. It is non-violent, slow and progressive.

5 WHAT PROCEDURE OF FIELD TEST DO I USE TO SEE THE UNIT WORKING IN A BOILER?
In many cases visual inspection tells the tale. Although a T.D.S. continuity test will indicate its reaction, the operator or plant supervisor has schedules set up for blowdown according to P.P.M. concentration in his boiler water. Our unit will increase his reading, showing the scale coming into suspension, requiring more frequent blowdowns. As the scale in removed, the T.D.S. - P.P.M will again recede and slowdown should be sequenced to maintain the correct T.D.S. Because of the removal of existing deposits, the heat exchange will be better and oil consumption will go down.

6 WHAT PROCEDURE OF FIELD TEST DO I USE TO SEE THE UNIT WORKING IN AIR CONDITIONING EQUIPMENT?
Monitor the temperature spread across the condenser, 10°F - 12°F should be maintained. Since the condenser increases in efficiency, the load can be produced. Record this change. Head temperature will decrease, oil temperature will decrease. This load change has several side effects: (1) Dollars saved in energy consumed; (2) Increased life of equipment.

7 WHAT PROCEDURE OF FIELD TEST DO I USE TO SEE THE UNIT WORKING IN INDUSTRIAL HEAT EXCHANGERS?
Many manufacturing processors are keyed into a heat exchange medium: mold temperatures, compressor temperatures, hydraulic oil temperatures, heat transfer oils, and lubricating oil functions are keyed into a heat exchange medium, which in turn has a keyed control over production

8 WHAT PROCEDURE OF FIELD TEST DO I USE TO SEE THE UNIT WORKING IN DOMESTIC HOT WATER SYSTEMS?
Potable water and its required purity presents our greatest challenge. ETROMAC’s units do not introduce any foreign contaminates which would alter the purity. The unit's location, which is on the feedwater line at a point after the recirculated hot water premixes with the cold, then as it enters the hot water generator. Normal blowdown of this storage tank will reveal a residue of crystal deposits being discharged from the bottom drain.

By observing this discharge and the increase in temperature, of the return hot water line, you will witness a shorter recovery time; also, a change of a more efficient heat exchange. Monitoring the T.D.S. in the raw water feed, as well as the circulating hot water at the furthest point in the system will show the rate of removal. Scheduled blowdown of the hot water storage tank should not be neglected.

Water flow rates will increase at all points in the system. Sectionalizing a piece of the water line at a remote location will provide a method to visibly inspect the removal rate. When this water is used for other purposes such as sterilizers, evaporators, steam tables, heating, dishwashing, etc., a marked difference will be seen in the reduced maintenance of use application.

9 WHAT OTHER METHOD CAN I USE TO COMPUTE THIS SAVINGS?
In most cases of water use, a means of circulation is required. When the scale is removed, the flow rate increases and the load on the pump motor is reduced.

To convert this savings into dollars will require a simple ampere reading, before and after. The reduced load in amperes multiplied by the voltage will reflect watts of energy saved.

10 WHAT KIND OF WATER WILL IT WORK ON?
It is most effective an water with a high P.P.M. concentration, hard water, salt water, and soft treated water.

11 WHAT EXPENSES ARE INVOLVED FOR ME TO USE THIS UNIT?
After installation in a boiler, only an oxygen scavenger is required. In an AC condenser, an algaecide may be required.

12 HOW MUCH DOES ONE COST?
Less than one major overhaul to your system. Normal payback in one year by energy saved.

13 HOW MANY FEET DOWNSTREAM WILL IT WORK?
It works faster in close proximity to the unit. But as the system cleans, the action moves away. A unit has been installed on a large recirculating unit of over 5,000 feet. Action shows a continual increase in flow throughout the system.

14 WHAT SIZE DO I USE?
Size based on the diameters of your system’s pipe, water flow rate is unrestricted, no need to concern.

15 IS IT A WATER SOFTENER OR WILL IT SUBSTITUTE FOR ONE?
No, it does not soften water. It does make wetter, suds better, only because the surface tension is changed. It is not a water softener.

16 WHAT HAPPENS TO THE PIPE AFTER THE SCALE IS REMOVED?
It could be that scale is sealing a leak, so removing it may cause some leaks. No further action besides a clean pipe occurs.

17 WHERE DOES THE LITTLE SCALE GO?
In a once through system, the scale removed is flushed away. In a recirculating system, the scale will settle in a slow flow area such as a sump. This can be removed by bleed off or physically removed if the particles are too large to flush out.

18 WILL NEW SCALE FORM AFTER THE SYSTEM IS CLEAN?
Yes! Now scale CAN form if the unit is removed from a clean system. Keeping the unit in the system keeps it clean, and proper bleed off or blowdown is maintained.

19 WHAT ABOUT POLLUTION?
The natural water elements are not contaminated and can be returned to municipal water disposal systems. This feature on a domestic hot water system is the only way to go.

20 WHAT ABOUT CHEMICALS IN MY COOLING TOWER?
Scale is no longer a problem. It could be possible in your environment that a fungi and algae growth will occur. The algaecide chemicals may be used to control this problem.

21 DOES THE UNIT AFFECT RUST?
Yes, to some extent. Only the extremely loose scale mixed with other scales will be affected. It will not derust a bad line. It Is not a metal removal action.

22 WHAT ABOUT MY P.H.?
Tests have shown stabilization in boilers from 8.0 - 8.3, although this too will be relative to the condition of the raw feed water.

23 WHAT EFFECT WILL THIS UNIT'S OPERATION HAVE ON SALT WATER?
The unit's operation is related to the conductivity of the fluid; consequently, salt water systems are more conductive and the reaction is more pronounced.

Ships using salt water for temperature control of heat exchangers are ideal environments. not to mention offshore rigs, crew boats, tugs, dredges, etc.

24 IF THIS IS THE CASE, HOW CAN I JUSTIFY THE PURCHASE OF THIS UNIT?
Your greatest savings occur from:

(1) Prevention of Production Loss - No downtime, because of cleaning and replacing clogged systems.
(2) More Efficient Heat Transfer - Your heat exchanger efficiency is returned to manufacturer's specs. Energy savings are In both oil and electricity consumed.
(3) Flow Rate - Returned to normal for better mechanical operation.
(4) Equipment Replacement - The replacement of damaged equipment is reduced. The life of existing equipment is extended.
(5) Total Mechanical - Values will "free up" and hot water lines will deliver proper rated flow. Your hot line distress calls will diminish. Your personnel will like their jobs more and your life becomes just a little bit easier. Your family will love you more.

25 WHAT MAKES THIS UNIT WORK BETTER THAN THE OTHERS?
The effectiveness of this unit is based on sound proven laws of physics. It affects suspended particles and the basic water molecules. Its effectiveness is directly coupled to its environment. It does not require maintenance, does not add to pollution and can be used in fresh as well as salt water. It is not a gadget, it performs a physical function. It controls scale.

26 IF IT DOES ALL THIS, WHAT DOESN'T IT DO?
It's not a miracle machine. It won't be installed today and your problems gone tomorrow. Its effectiveness is related to your particular scale problem. It will proqressively perform as we have outlined.

27 DO YOU PUT THIS IN AND FORGET IT?
That's not the way we do it ! If you control your blowdown and sump flushings properly, then no further problems should occur.

28 THIS SOUNDS TOO GOOD TO BE TRUE.
But it is ! There are letters of users attesting to what it has done for them. ETROMAC has been recognized by major industries as an aid in solving water scale problems.