The control unit for medium- and low-temperature refrigeration machines with automatic defrosting MSK-301-86 is designed to control freezers, refrigerated counters, monoblocks and other refrigeration commercial and industrial equipment.

The device automatically maintains the temperature of the freezer and evaporator, as well as, depending on the set operating mode, the temperature of the second

evaporator or the temperature in the fan air stream.

If necessary, the MSK-301-86 can record and respond to the following emergency situations:

• short circuit or open circuit of sensors
• opening of the chamber door for a time exceeding the maximum permissible time
• unacceptable deviation of the supply voltage parameters
• sticking of the starter output contacts
• compressor temperature exceeding the permissible limits