The main­te­nance of the out­door unit of the split sys­tem is essen­tial because it is most in con­tact with dust, fly­ing insects, humid­i­ty, pre­cip­i­ta­tion and atmos­pher­ic chem­i­cals. If clean­ing is ignored, then the con­denser and com­pres­sor locat­ed out­side will remain effec­tive for no more than 2–3 sea­sons.

Fur­ther, the process of fresh air intake will wors­en and the load on the pow­er grid will increase. A lay­er of poplar fluff builds up on the out­door mod­ule, which dis­rupts the oper­a­tion of the unit and the cool­ing of the refrig­er­ant. The fre­quen­cy of work depends on the loca­tion of the block:

  • from 1 to 4 floors, should be cleaned before each work­ing sea­son;
  • split-sys­tems of res­i­dents from 5 to 8 floors can take care of 1 time in 2–3 years, since the air at this lev­el con­tains almost no dust and insects fly there;
  • HVAC equip­ment, locat­ed on the 9th floor and above, can under­go rou­tine main­te­nance once every 3–4 years.

Do-it-your­self out­door unit is not a dif­fi­cult event, but the user must under­stand the pro­ce­dure and fea­tures of the event so as not to harm the equip­ment with care­less actions.

Expert opin­ion

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No mat­ter which floor the air con­di­tion­er is installed on, if it is used in win­ter, it needs to be peri­od­i­cal­ly cleaned of frost.

Step-by-step instructions for cleaning the external unit of the split system

 Instructions for cleaning the external unit of the split system

In order for the pre­ven­tion to be car­ried out cor­rect­ly, you need to have an idea of ​​​​what the out­door mod­ule con­sists of:

  • most of the inter­nal space is occu­pied by a fan that serves the heat exchang­er;
  • near the cool­er, a con­denser is installed along the inner wall, it con­sists of cop­per tubes through which the refrig­er­ant is trans­port­ed;
  • the union con­nec­tion com­bines cop­per tubes into a sin­gle sys­tem;
  • the cir­cu­la­tion of fre­on through the sys­tem is pro­vid­ed by a com­pres­sor; units of a spi­ral or pis­ton type are usu­al­ly used;
  • there is a con­trol board on the inner sur­face of the case;
  • in reversible type air con­di­tion­ers, a 4‑way valve is pro­vid­ed in the design;
    fil­ter for clean­ing the refrig­er­ant;
  • a pro­tec­tive cov­er that clos­es access to the ter­mi­nals, union con­nec­tion and elec­tri­cal cables.

Mea­sures for clean­ing the exter­nal unit of the split sys­tem are per­formed sequen­tial­ly:

  1. mechan­i­cal clean­ing. First, the cli­mat­ic equip­ment is de-ener­gized, only after that it is pos­si­ble to start pre­ven­tion. First, dirt is removed from the out­side. Then the case is dis­man­tled and debris is removed from the inside.
  2. Flush­ing. With a damp cloth or sponge, dust is removed from the fan blades and con­denser, you need to make sure that mois­ture does not get on the elec­tri­cal parts of the device. If the cool­er requires a large amount of water, the elec­tri­cal unit should be cov­ered with foil.
  3. . The dust of their hard-to-reach places is removed with a hand-held vac­u­um clean­er or brush­es of var­i­ous widths.
  4. Radi­a­tor clean­ing. It can be cleaned with spe­cial comb brush­es, rinsed with water pres­sure or using a steam clean­er.

Step-by-step instructions for cleaning the external unit of the split system

Expert opin­ion

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The elec­tri­cian of the out­door unit of the split sys­tem can only be ser­viced, cleaned and repaired by spe­cial­ists. Self-pro­phy­lax­is is pro­hib­it­ed.

After com­ple­tion of the work, the case must be installed in place and wait for the com­plete dry­ing of all ele­ments. Only after that, the cli­mate equip­ment can be con­nect­ed to the net­work and used. First ser­vice.

If the own­er of the house­hold cli­mate sys­tem fur­ther intends to car­ry out pre­ven­tive main­te­nance him­self, you should care­ful­ly mon­i­tor the work of the mas­ters in order to sub­se­quent­ly use their expe­ri­ence.

Expert opin­ion

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If the split sys­tem is installed on the high floors of an apart­ment build­ing and access to the out­door unit is dif­fi­cult, self-clean­ing is life-threat­en­ing. In this case, spe­cial equip­ment or ser­vices of indus­tri­al climbers are need­ed.

In the process of pre­ven­tion, you can use spe­cial deter­gents, they are easy to find on sale: sprays, con­cen­trates and oth­er for­mu­la­tions. It is impor­tant that the instruc­tions for them indi­cate: “For an exter­nal unit.”


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