Technical service

ТО-1

In 2 weeks after installation

  • Visual examination of the refrigeration unit
  • Check the Freon pressure

ТО-2

For units COLD: once a year (March-May)
For units HEAT/COLD “H” twice a year (March-May, September-November)

Examination of the refrigeration unit (at switched off system)

Compressor:

  • Definition of degree of contamination of the compressor, its cleaning if it’s necessary, check if there is not oil leakage in the compressor or in the fittings, check the lack of leakage of Freon by the electronic leak detector
  • Examination of Freon pipes and hoses, check their integrity and the reability of their fixing to the frame, check the sufficient slack areas on the hoses, leading to the fittings of the compressors, check the lack of leakage of oil on the fittings and tees, their pressings, gas fittings, check the lack of leakage of Freon by the electronic leak detector
  • Check the tightening nuts of fittings, compressor mounting bolts, their tightening if necessary.
  • Check the reliability of electric connections
  • check the work of tension rollers, if it’s necessary change them

Evaporator:

  • Definition of degree of contamination of the compressor, its cleaning if it’s necessary
  • check if there is not oil leakage on the fittings and on the valves, check the lack of leakage of Freon by the electronic leak detector
  • сheck the tightness of nuts and fittings and their tightening if it’s necessary
  • clean the condensate drain hose
  • Check the reliability of electric connections

Condenser:

  • Reinstallation of the condenser housing
  • Definition of degree of contamination of the compressor, its cleaning if it’s necessary
  • Check of the reliability of connections of wiring of the fans of the condenser
  • Check the lack of oil leakage on the fittings, their connections
  • Check the lack of Freon leakage by the electronic leak detector
  • Check the tightening nuts of fittings connections
  • Check the reliability of electrical connections
  • Washing of the condenser

Check the refrigeration unit (when the system is switched on)

Compressor:

  • Check the temperature of charge line and suction line fittings of compressors when it’s switched on. Connecting the manifold gauge to evaluate the high and low pressure refrigerant.
  • Check the presence and the location of extraneous sounds at work of the compressor and their elimination

Evaporator:

  • Assessment of the cooling uniformity of the evaporator

Condenser:

  • Check the temperature ΔT at the inlet of the condenser and behind it
  • Visual check of the quality of the refrigerant flow in the inspection window of the receiver

The system in whole:

  • Check the main functions of the control panel
  • Check the tension wheel
  • Change he driving belts if necessary
  • Change the relay if necessary
  • Lifting of caps on service unions