The purpose of the technical operation of a refrigeration unit is to establish and maintain specified temperature and humidity conditions in the refrigerated rooms. The main task is to ensure reliable, trouble-free and safe operation of everything refrigeration equipment with minimal costs for the production of artificial refrigeration.
Proper organization technical operation of the refrigeration unit must meet the requirements:
reliability and durability of the refrigeration equipment in use;
safety and trouble-free operation.
Refrigeration production costs associated with energy savings work force, water, operating materials must be minimal.
An important condition Normal operation of a refrigeration unit requires the presence of specially trained personnel. Personnel servicing the refrigeration unit must follow technical documentation for a refrigeration unit, production instructions for maintenance of the entire installation as a whole, as well as its individual units and elements.
For the economical safe operation of a refrigeration unit, it is necessary to observe the optimal mode of its operation, equip the installation with instrumentation and instruments automatic regulation and protection, correctly fill the system with refrigerant, keep the heat transfer surfaces of condensers and evaporators clean, carry out scheduled preventive maintenance of refrigeration equipment in a timely manner, keep a daily log of the refrigeration unit and prepare technical reports.
At trade enterprises and Catering Refrigeration equipment is serviced by mechanics from specialized refrigeration equipment plants. Maintenance includes inspections carried out once a month with preventative work and necessary minor repairs, troubleshooting that may occur, daily checking the performance of the refrigeration unit.
The scope of maintenance depends on the type of machine, the installation layout and the degree of automation.
Conclusion
Today, the technology for manufacturing refrigeration units is at a very advanced stage. high level. The development of new models of refrigeration units today has even affected the field of microelectronics. Refrigeration machine production technologies and digital computer technologies were also not spared.
Application of refrigeration units with computer controlled in everyday life significantly adds convenience to their operation, saves time, and computer monitoring of the condition of the unit components keeps it more reliable and safe work for many years.
The use of computer-controlled refrigeration units in production increases production efficiency, provides reliable temperature control, thereby reliably preserving raw materials and ensuring minimal losses.
Perhaps the main disadvantage of such installations is the complexity and high cost of repairing the electronic parts of the computer control. In addition, electronic components require special conditions operation. Another disadvantage is that computer-controlled refrigerators are quite expensive, but the savings on minimal losses of raw materials during storage in production fully justify the cost of the units.
Another important problem is the lack of specialists to service such equipment. But most enterprises in Russia invite specialists from abroad to service imported refrigeration units, since most of the digitally controlled refrigerators are supplied from abroad.
Unfortunately, few such refrigerators are produced in Russia, or they are produced, but under the license of foreign companies, respectively, such units enter the market under the brand of a foreign company.
Therefore, it is necessary to develop in Russia the development and production of refrigerators and refrigeration units with digital control and create new technologies for their production so that Russian refrigeration units become competitive in the world market.
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At the end of the courses a qualifying exam is held. After successfully passing the exam, a CERTIFICATE of the established form is issued.
Training taking into account the requirements of professional standards
The term "refrigeration equipment" includes great amount technology. These are household refrigerators and industrial cooling systems, retail counters and huge warehouses, many special machines and much more. Most refrigeration equipment mechanics are involved in the installation, assembly, maintenance and repair of refrigeration equipment in trade enterprises, in the food industry, and in warehouses.
The training program includes: studying the basics of obtaining artificial cold; equipment and parts refrigeration systems; principle of operation of the refrigeration machine; basics of electrical installation; repair and maintenance of refrigeration systems; troubleshooting; typical faults; repair and maintenance of air conditioners, chillers, central cooling systems and multi-zone systems.
The purpose of the course is to acquire students theoretical knowledge and practical skills in organizing and carrying out repair processes for industrial and household air conditioners.
Timetable of classes
| Course duration | Course fee |
| 76 hours | 18000 rub. |
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Regular maintenance - an indispensable condition durability of refrigeration equipment in various areas of production and public service.
The Ecolife company provides professional maintenance of refrigeration equipment in Moscow and the Moscow region. We will ensure the stable operation of your equipment and, as a result, the entire enterprise.
You will be guaranteed against sudden stoppage of refrigeration equipment due to mode failure, malfunctions, wear of parts, clogging and contamination of units.
The list of maintenance work for refrigeration equipment depends on the specific type of equipment, operating features and design.
Cost of work
The cost is calculated individually depending on the form of cooperation. General prices are available upon request.
We work throughout Moscow and Moscow Region with visits to equipment. The guarantee of our work is the use of high-quality components and tools and the professionalism of our employees at an affordable cost. In our work we use low-aggressive detergents"Frionett" and "Convotherm", permitted in the Russian Federation.
Contract for maintenance of refrigeration equipment
We enter into an agreement with clients for the maintenance of refrigeration equipment, in a special appendix of which a list of works is prescribed with all measures to maintain the equipment in working condition.
Each item on the list is agreed upon with the client; the type of contract depends on the long-term cooperation, the type and complexity of the equipment.
We offer three standard contracts:
1. One-time service agreement
2. Permanent service agreement
3. Scheduled maintenance agreement (annual maintenance with a schedule of activities)
One-time maintenance of refrigeration equipment
Includes diagnostics, troubleshooting and preventive maintenance for the further functioning of the equipment.
First, a preliminary visit of specialists to the site, drawing up an estimate with a list of works and agreeing on deadlines.
Payment is made for activities carried out within the framework of the contract after signing the acts.
Typical list of works for one-time maintenance:
1. Inspection and visual assessment external state, configuration and functionality
2. Checking and adjusting hinges and locks
3. Cleaning the frame, compressor, air condenser
4. Pulling threaded connections
5. Check for refrigerant leakage,
6. Checking the thermal insulation of the refrigeration circuit
7. Checking electrical networks, contacts and connections
8. Elimination of existing faults, refueling the circuit and replacing worn parts if necessary
9. Testing operating modes
10. Entering data into the journal
Upon completion of the work, the company employee makes recommendations for further operation of the equipment.
During the work, the list of services can be adjusted if malfunctions are detected during the inspection process.
Continuous maintenance of refrigeration equipment
The agreement on permanent cooperation is concluded for an agreed period, during which our specialists undertake all work to maintain the condition of the equipment at fixed rates. An exact work schedule is not established; all activities are carried out as necessary or at the request of the client. Payment is made upon completion of the work each time the work is completed.
Planned annual maintenance of refrigeration equipment
Planned annual maintenance includes a set of regular measures according to a set schedule. In agreement with the customer, specialists regularly visit the work site, assess the condition of the equipment and take all necessary measures for further operation in the required mode.
Regular maintenance will help to identify serious problems in time and take action. preventive measures to eliminate them. Timely inspection can prevent sudden breakdown and shutdown of equipment. All work is carried out strictly according to the planned schedule, which includes a payment schedule.
Scheduled maintenance schedule for refrigeration machines
| Periodicity | List of maintenance work for refrigeration machines | Additional list of works for pumping station refrigeration unit |
| Monthly |
Visual inspection, |
Control of corrosion processes in the main components of mechanisms, |
| Quarterly |
Control of air condensers, |
Coolant refueling and analysis, |
| Once every six months |
Condition monitoring and cleaning of capacitors, |
|
| Annually |
Inspection of internal cavities and fan bearings, |
Cleaning all filters, |
| Once every 2 years | . replacing compressor oil | |
| Once every 3 years | . refilling the coolant and cleaning the entire system |
Additional service
Each client with whom we have entered into an agreement is provided with Additional services, including free consultations and recommendations on the operation of refrigeration equipment. Our clients also receive a discount on spare parts and components for refrigeration equipment.
To get detailed information and request personalized service, you can call us by phone or fill out the form on the website. Our specialists will contact you as soon as possible and provide detailed advice on issues of interest.
Machines and apparatus of refrigeration units are placed in such a way as to ensure their normal maintenance and repair.
Maintenance of a refrigeration unit consists of preparing it for operation, starting it up, regulating the supply of refrigerant to the evaporative system, caring for the refrigeration unit during operation, stopping and turning off machines and devices, observing safety regulations, keeping machines and work areas clean and in good working order, and also filling out the necessary reporting documentation.
The entry on duty of shift personnel begins with checking the entries in the refrigeration station operation log, and ends with monitoring temperatures at the main points of the refrigeration cycle and checking the operation of the refrigeration station equipment.
Both shifts - the handing over and the receiving - sign for the delivery and acceptance of the shift in the journal.
The duty personnel periodically check the quantity and density of brine, the water supply to the condensers, the serviceability of emergency ventilation, the availability of necessary spare parts, materials and tools, and personal protective equipment. Special attention should be given to checking the condition of the rubbing parts of compressors and pumps, the operation of the oil system, valves and seals.
For the convenience of maintenance personnel, inspection lights or other devices are installed on the cooling water pipelines to monitor the flow of water.
In various places of the refrigeration installation, there are also sockets for instruments required both for constant monitoring of the operation of the installation and for periodic testing. Pressure gauges, thermometers, ammeters and others measuring instruments installed so that when starting the installation they are in the field of view of the driver and his assistant.
Automatic control valves are usually duplicated by manual ones. This allows you to continue producing cold if some of the automatic control devices fail.
Medium and large refrigeration units mainly operate with a manual starting system. Technical operation They are quite complex and require from the operating personnel in-depth knowledge of the physical principles of obtaining cold, the design of machines, apparatus, instruments, fittings and the rules for handling them.
To facilitate the work of personnel, piping diagrams, equipment layout plans, information about the main parameters of refrigeration units, consumption rates of refrigerant, oil, electricity, safety posters, schedules of preventive inspections and repairs are posted in the engine rooms of refrigeration stations.
In order to orient service personnel in branched pipeline diagrams, they are painted in conditional colors. The most commonly used colors are:
for refrigerant pipelines: discharge - red, liquid - yellow, suction - blue;
for brine pipelines: pressure - green, return - brown;
for water pipelines: pressure - blue, return - purple.
If there are several cold parameters, conditional rings are also applied to the painted pipelines, indicating which machine this pipeline belongs to.
Efficient and reliable operation any refrigeration installation depends not only on good technical condition equipment, but also from competent operation his. Direct supervision of the operation of the equipment is carried out by drivers, their assistants, operator operators, mechanics on duty and electricians subordinate to the shift supervisor of the refrigeration station.
Their main task is to maintain the specified operating parameters of refrigeration machines with the lowest consumption of energy and operating materials and strict compliance with safety regulations.
To successfully complete the tasks facing operating personnel, it is necessary to:
high quality and serviceability of equipment;
provision of control and measuring instruments;
availability of spare parts, tools and repair devices;
presence of refrigerant, coolant, water, lubricating oils, instrumentation air, operating materials and energy resources;
correct filling of systems with refrigerant and coolant; absence of contamination on heat transfer surfaces; timely prevention and repairs; maintaining a shift log to identify violations of the operating schedule;
highly qualified service personnel.
The operation of refrigeration units is regulated special instructions. Failure to comply with them may result in violation technological process consumers of cold and increased energy consumption to obtain cold.
The sequence of individual operations during starting and stopping and the maintenance procedure depend on the design and operational features refrigeration unit, which must be reflected in the maintenance instructions.
This chapter discusses the basic rules and techniques for operating the most common types of large refrigeration units, which in each individual case must be clarified in accordance with the start-up instructions of the equipment manufacturers. Having studied these techniques, the future driver or operator will be able to master the procedure for starting, regulating and stopping refrigeration units of any system.
Persons who have reached the age of eighteen, have passed a medical examination and have a certificate of completion of training in their chosen specialty are allowed to operate industrial refrigeration units.
Operating personnel must know well and strictly follow the rules and instructions for the operation and repair of equipment and devices of refrigeration stations. Engine rooms of refrigeration stations are the workplace of the driver and his assistant. The pumping and equipment departments are serviced by operators who are subordinate to the driver and coordinate all their actions with him.
Refrigeration station personnel annually pass exams of the qualification commission. The exam results are documented in a protocol. Persons who pass these exams are issued special certificates.
Control questions
1. What tasks are assigned to the operating personnel of refrigeration units?
2. List the conditions necessary for successful operation of a refrigeration unit.
3. Tell us how to fill the system with ammonia and freon?
4. How is brine prepared?
5. Tell us about preparations for starting up the refrigeration unit.
6. How do you start a refrigeration unit with piston compressors and turbocompressors?
7. List the signs of normal operation of a piston compressor.
8. Tell us about compressor lubrication.
9. How is the operation of a compression refrigeration unit regulated?
10. What temperature changes should accompany the normal operation of an ammonia refrigeration unit?
11. Explain the procedure for stopping a compression refrigeration unit.
12. What do you know about maintenance procedures for evaporators and condensers?
13. What causes deterioration in heat transfer in the evaporator and condensers?
14. Tell us about preparations for the launch of freon turbo units.
15. What signs characterize the normal operation of a turbo-refrigeration freon unit?
16. Tell us about the operating features of propylene turbine units.
17. How to fill absorption refrigeration machines ammonia-water solution?
18. Explain the starting and stopping of an absorption chiller.
19. Tell us about the operation of centrifugal pumps.
20. What causes corrosion of refrigeration equipment?
21. How does tread protection work?