Replacement of pipelines is far from a budget option to improve the functioning of the heating system. Timely flushing of the system makes it possible to get rid of dirt inside the pipes, which cause a marked decrease in temperature during the operation of heating equipment.
Stages of execution of the front of works for flushing heating systems by special organizations is as follows:
- First of all, inspect the condition of the structure. On the basis of which the general condition of a design is estimated. Primary crimping of the system is carried out. The working pressure cannot be higher than the standard marks 1,25 times. Normally, it can not be higher than 2 atmosphere. This is necessary for that, so that no leaks appear during operation. This may lead to a conflict with the customer's representatives. All leaks and identified defects must be eliminated before starting work on washing heating batteries.
- Then write an act on the work of interior work during the cleaning of structures. Such works include complete dismantling of heating systems.
- Choose the most effective and optimal technology for cleaning the structure. The most economical is the hydropneumatic method of flushing the internal heating battery. They do this with a special pulp. This creates a strong jet of water, which washes the heating coils inside. Sometimes special equipment is used, which is used to flush the battery. Some professionals use chemicals for cleaning. But this method is more aggressive and can damage the internal parts of the system.
Calculations and estimates
Before starting work make the necessary calculations. The master draws up a work plan for employees, which must flush the heating system. The cost must include the cost of renting heating equipment, all means and reagents used in washing. The final cost of work includes the cost of all work performed. Here are considered as external, and covert operations for flushing heating systems.
Drawing up a contract
After, as a document will be drawn up and approved according to all the rules, begin to conclude a contract for washing heating batteries. It reflects all the planned and carried out work. The contract specifies the cost of the full scope of work, the obligations of both parties are described in detail. Listed here exact deadlines all performed works on washing of heating systems. Penalties must be included in the contract. They will take effect, if the deadlines are not met or the equipment washing measures are performed, they will be of poor quality.
An important place in the contract is given to the column, where the actions on the responsibility of the customer and the executor are described. This item will come in handy, if there is a conflict and the parties cannot reach an agreement. The contract describes the sequence of changes, it states the conditions under which it can be terminated.
so, your the contract is concluded and signed by both parties. From this moment it enters into force. The customer can safely begin work on washing heating batteries.
The act of washing the heating batteries is a sample
At the end of the front work must be done secondary crimping heating equipment. This is done for that, to make sure, that the system is fully operational. At the end of the secondary crimping make an act. It provides space for the customer's signature. He must write, that agrees with the quality and timing of work on washing heating batteries or disagrees with them. Sometimes controversial points arise, when the customer and the contractor cannot come to a single agreement. In such cases, the question of the legality of claims is resolved in court.
Ways to clean heating batteries
Method of chemical cleaning of heating systems
During the chemical cleaning of parts of heating systems, their inner cavity is filled with special solutions. These include substances from acid or alkali. They include inhibitors. They are able to prevent corrosion of the metal, help preserve its inner part, extend service life heating systems. Old alkali and acid solutions should be drained during the work. Such solutions are quickly neutralized. They add acidic components of the alkaline solution. This method of cleaning is used when washing steel pipes. The composition of the reagents cleans the inside of the battery from rust, salt deposits.
Cleaning of heating systems by means of hydraulic pneumatics
This method of cleaning the heating system is considered the most universal, inexpensive and most in demand. This method of cleaning requires a lot of water. In autonomous heating systems, wash all internal parts only with cold water.
Flushing sequence using hydraulics:
- produce the heating system in reset mode;
- the air flow is directed to the coolant of the system, which will quickly clean the internal structures of the battery from scale, formations;
- if there are risers in the heating system, then spend washing them;.if the heating system is cleaned by the resident, then the risers should be washed separately. This is done for that, to flush the radiator itself.
According to the contract, and it is necessary, to check the rinsing quality, must be done control fences of the heat carrier. Such work is carried out in a thermal unit, in other parts of the system. This is done for the commission for the acceptance of equipment, which will sign the act of acceptance of the equipment. She can always make sure the water is clean and free of impurities.
There are other ways to check heating systems. Representatives of the commission unscrew the plugs on the radiator of the battery. Through the hole they see it clogged or not by precipitation. According to the norms, there may be a little silt inside, and solid education is not allowed. Based on the results of the review, the two parties draw up an act. Both parties sign this form.
That is reflected in the acceptance certificate for washing the heating system:
- system flushing method;
- water of what temperature was used;
- water consumption during washing is taken into account;
- the quality of the performed work is indicated.
The act must be approved by the head of the executing party, it indicates the exact date of the work, the exact address of the work; names and surnames of the subscriber's representative, a representative of the heat supply organization, representative of the organization, which carries out washing.