Service calls and repairs plague the food service industry every day. A proper preventative maintenance program can insure trouble free operation of the equipment. Such a program could pay for itself over and over again as well as increase energy savings thus increase profit margin as well.
The problem area where we focus our attention is the equipment that utilizes water for some reason or another; i.e., ice machines, dishwashers, coffee machines, steamers, food wash, etc. The majority of service calls on this equipment are directly or indirectly water related.
Minerals in water are naturally in solution; however, when water temperatures change they precipitate in the form of a hard, brittle scale that collects in piping and on heat transfer surfaces. This insulating scale build up reduces efficiency of equipment, increases energy requirements, and increases maintenance time and costs. Maintaining scale free surfaces assures optimum heat transfer coefficients, enabling the maximum utilization of food service equipment.
We offer the “VEM” as a solution to these lime/scale problems.
When installed in line, this unique piece of equipment will cause minerals to remain in suspension throughout the heat transfer process. Instead of bonding together and forming scale they will flow through or settle at eh low points of a system in a purgable sludge form. The solids can then be easily removed by opening a drain at the bottom of the equipment.
Principles of Operation：
A molecule of water is expressed as H20. The hydrogen and oxygen atoms share electrons which form a chemical bond.
The molecule passes a positive charge on one end and a negative charge on the other end, pausing it to act like a bar magnet. This gives to the term "dipole moment' of a molecule. This dipole moment results when two charges +Q and -Q are separated by a distance d, and constitutes an electric dipole of magnitude Qd. This dipole moment or polar molecule is responsible for one of the most distinctive properties of water, its solubility.
Water has been called the universal solvent because it can dissolve almost any inorganic and many organic substances. The positive portion of the water molecule attracts positive particles of the other polar particles. As a substance dissolves in water, its particles break away from one another and cling instead to individual molecules.
The presence of a polar molecule in the vicinity of another molecule has the effect of polarizing the second molecule. This induced dipole can then interact with the dipole moment of the first molecule, and the two molecules are attracted together.
Nonpolar molecules may acquire a dipole moment when they are exposed to a magnetic field. Under the influence of a magnetic field, their electron distribution becomes distorted and the centers of positive and negative charge are separated. The magnitude of the induced moment is proportional to the strength of the field.
An VEM works on a basic electrical principal. In short what it does is polarize the mineral molecules in your water as dipoles. Think of the molecules as magnets each with a north and south pole. We have all tried to push magnets together and found that a north and south pole attract each other. If two molecules of calcium (for example) are polarized by an VEM then the south pole of one will attach itself to the north pole of the other. With a long chain of molecules "holding hands" the are unable to attach themselves to the walls of your pipe (creating scale). They remain in suspension and scale is eliminated.
Look at the drawing below. In pipeline head you can see random molecules entering the VEM. In VEM they are polarized and finally through VEM they emerge as dipoles and just like our magnet example they are "holding hands". Now there is absolutely no electric charge available for them to grab onto the walls of your piping. Even with the elevated TDS levels no scale or corrosion can form. Even existing deposits are slowly removed as those molecules join along in the "hand holding" process. |
