Purchase of periodic technical services for boiler house and heating and cooling systems. General technical service for boiler house (boiler devices, circulation and pressure pumps, expansion tank), 2 boilers (3 and 4 bar, 60000 kcal/h) - Cleaning of boiler combustion plates. Checking the water pressure and differential drop on the pressure line. Checking security group elements. Checking and debugging control panel connections. Checking the power and signal cables of the electrical elements of the boiler. Boiler limit switches, including max. temperature limit testing. Checking gas leakage at the burner gas inlet and gas sealing valves. Inspection of mechanism elements of combustion controllers. Analyzing and regulating the combustion of the fireplace according to the flue gas. Diagnosing pumps. Checking power and signal connections. Inspection of engine bearings, lubrication in case of need. Checking system sensors, tuning according to the system. Mechanical checking of 1 expansion tank, checking internal membrane leaks, Checking expansion tank air (pressure). Checking internal membrane leaks, checking gas and smoke alarm detectors. General maintenance for 49 units of split-type air conditioners, Washing of internal and external units. • Inspection and washing of drainage pipes, • Inspection of external appearance and inspection of control panels, • Inspection of air conditioners in heating and cooling modes, • Cleaning of filters, • Inspection of engines, • Inspection of electronic system integrity, • Inspection of electric current lines, (Once a year) Defect report General maintenance of 4 cabinet-type air conditioners, Washing of internal and external units. • Inspection and washing of drainage pipes, • Inspection of external appearance and inspection of control panels, • Inspection of air conditioners in heating and cooling modes, • Cleaning of filters, • Inspection of engines, • Inspection of electronic system malfunction, • Inspection of electric current lines malfunction. General maintenance of 15 units of split-type air conditioners, washing of internal and external units. • Inspection and washing of drainage pipes, • Inspection of the external appearance and inspection of control panels, • Inspection of air conditioners in heating and cooling modes, • Cleaning of filters, • Inspection of engines, • Inspection of electronic system integrity, • Inspection of electrical current lines, (Once a year) General maintenance of boiler room (boiler units, circulation and pressure pumps, expansion tank), 2 boilers (3 bar, 377 liter, 400000 kcal/h) Cleaning of boiler combustion sheets. Checking the water pressure and differential drop on the pressure line. Checking security group elements. Checking and debugging control panel connections. Checking the power and signal cables of the electrical elements of the boiler. Boiler limit switches, including max. temperature limit testing. Checking gas leakage at the burner gas inlet and gas sealing valves. Inspection of mechanism elements of combustion controllers. Analyzing and regulating the combustion of the fireplace according to the flue gas. Diagnosing pumps. Checking power and signal connections. Inspection of engine bearings, lubrication in case of need. Checking the system sensors, tuning according to the system. Mechanical inspection of 1 expansion tank, internal membrane leak check, expansion tank air (pressure) check, internal membrane leak check, gas and smoke alarm detector check. Diagnostics and cleaning of 1 boiler