Description And Operation Of The Appliance - CombiSteel 7489 Serie Mode D'emploi

1.2 WHO THE MANUAL IS FOR?
The manual is aimed at the both Retailers and users and also to maintenance workers qualified to carry out work
on the equipment.
The user must not carry out work reserved for qualified Maintenance workers and/or technicians. The
Manufacturer is not responsible for any damage caused by lack of respect for this last regulation.
1.3 SAFEKEEPING
The Manual for Use and Maintenance must be kept in the immediate vicinity of the equipment, in an appropriate
holder and, above all, protected from liquids and other substances that could make it illegible.
1.4 SYMBOLS USED
SYMBOL
!

2 DESCRIPTION AND OPERATION OF THE APPLIANCE

2.1 DESCRIPTION
The upright refrigerators are condensed air refrigerator units made up of:

A condensing unit (outside cold storage room)

A evaporating unit (inside cold storage room)

A control panel (positioned on the condensing unit)

Defrosting is of the electric type and it is automatic

Condensation is air based
2.2 OPERATION
The upright refrigerators are refrigerator units which function by means of refrigerator compressor of the
airtight type. With air tight motion and alternative motion, powered by electricity (mono phase or three phase)
and using as a refrigerant the fluid R404A/R134A.
Principle of refrigerator operation cycle
In thermodynamics for the refrigerator cycle we intend the change of state which a certain body undergoes (for
example a refrigerating fluid). The passage of the refrigerating fluid from the liquid state to the gaseous state
takes place in the evaporator. Because this is an endothermic phenomenon, it needs heat which, when it
happens, is taken from the air which the evaporator comes into contact with. So, when coming out of the
evaporator, the vapours of the refrigerating fluid are sucked out by an air compressor and sent to the condenser.
If the latter takes away not only the heat that the gaseous refrigerating fluid has acquired during the course of
the evaporation (ENTALPIA DI EVAPARATION), but also the calorific equivalent of the compression work, then
the fluid returns to the liquid sate. Because liquefaction is an exothermic phenomenon, there is production of
heat, which is disposed of through air and through water. The refrigerant fluid, leaving the condenser, passes
through an expansion organ and returns to the evaporator, thus completing the cycle.
MEANING
WARNING
CONSULTATION
COMMENT
Indicates a warning or a note on a key
function or useful information. Pay great
attention to text indicated by this.
It is necessary to consult the Instruction
Booklet before carrying out the operation.
10