TAEevo M05-M10
8
The data inside this manual are not binding and they can be modified by the manufacturer without notice.
All rights reserved.
C
HAPTER
4
D
ESCRIPTION
4 . 1 O p e r a t i n g p r i n c i p l e
All the
chille
rs described in this manual work on the basis of the same principle. A refrigerant circuit cools the exchange surface of an
evaporator through which the liquid to be cooled passes.
The evaporator finds inside the tank.
The refrigerant compressor is controlled by an electronic control unit.
The electronic control unit controls the temperature of the water in the tank to maintain it within preset limits.
Also consult
Chapter 7 “Electronic control board“
.
4.1.1
C
ompressor
Hermetic or rotary type, cooled by the aspirated refrigerant and equipped with thermal cutout protection.
The compressor is mounted on anti-vibration supports.
4.1.2 Casing
Built with galvanised panels and painted with epoxy resins.
The panels have no structural function so that they can easily be removed to permit total access to all the components.
4.1.3 Materials in contact with the liquid to be cooled
Stainless steel, copper, brass, plastics.
4.1.4 Condenser and fan
Air cooled condensers are used without steel tubes; in this case it is the fins that form the tube by means of long collars inserted one inside the
other and brazed with copper in a controlled atmosphere oven. The condensing coils are equipped with an axial fan complete with protective
grille. The fan is of the “pressure” type: the air is drawn from the interior of the unit and expelled into the atmosphere, flowing through the
condensing coil along its route.
4.1.5 Evaporator
Consisting of a copper tube in tube exchanger. The water flows in counter-current to the evaporating refrigerant.
4.1.6 Pump
Of peripheric type, body in brass/bronze, impeller in brass, shaft in stainless steel.
ATTENTION
If the pump would clump, follow the instructions in paragraph 9.2.2 “Unjamming the pump”
NOTE
The pump must never run dry.
4.1.7 Accumulation tank
In these units are used stainless steel accumulation tanks.
TAEevo M are furnished with cylindrical tank, finding in vertical position over the unit’s base.
The tanks, hermetically closed, contain the evaporator.
The hydraulic circuit is of atmospherical type and by a plastic receptacle with a capacity of about 1,5 litres,
complete with a plug (
A
), it is possible to fill the unit.
This receptacle is fixed to the machine casing in which there is a slot (
B
) for inspecting the water level and a
hole which permits access to the filling plug from the outside.
4 . 2
O v e r a l l d i m e n s i o n s
See enclosures RED xxx
4 . 3
M i n i m u m d i s t a n c e s f r o m w a l l s
See enclosures RED xxx
4 . 4
W a t e r a n d r e f r i g e r a n t c i r c u i t s
See enclosures REF xxx
4.4.1 Water circuit
The water flowing through the evaporator pipes cools and flows into the tank.
Then the water is sucked by a peripheric pump which sends it directly to the user.
The pump delivery is connected to the evaporator by a
by-pass pipe
which guarantees a minimum water flow through the pump should a pipe at
any point of the hydraulic circuit be closed by mistake.
A
B
