TAEevo M05-M10
18
The data inside this manual are not binding and they can be modified by the manufacturer without notice.
All rights reserved.
C
HAPTER
8
H
IGH
PRESSURE
SWITCH
(HP)
TAEevo M05 - M10 models are furnished with a high pressure switch (HP).
It monitors the discharge pressure of the refrigerant compressor and prevents it from increasing to dangerous levels for the
compressor and people within the immediate vicinity.
It is of “manual reset” type. It opens the power circuit of the compressor and of the fan (see wiring diagram). When the
discharge pressure of the refrigerant compressor decreases and falls below the reset point, it resets. Therefore it is necessary to
manually restart it to start the unit (press the reset button on the top part of the cover
B
).
The setting values are fixed.
In the event of replacement, the pressure switch is screwed to a SCHRAEDER valve which prevents the refrigerant from
leaking.
The TRIP and RESET values of the pressure switch are indicated in the following table:
C
HAPTER
9
O
PERATION
AND
MAINTENANCE
9 . 1
O p e r a t i o n
The machine operates in completely automatic mode.
There is no need to turn it off when there is no thermal load as it turns off automatically when the preset water temperature has been reached.
9 . 2
M a i n t e n a n c e
ATTENTION
Before proceeding with the maintenance of these units be sure that all personnel concerned have read and understood the
“Safety”
section of
this manual.
9.2.1 Unit access
To access the components of the refrigerant circuit, remove the front panel “A” and then the unit cover “B”. After removing the front panel “A”
it is possible to access also the electrical panel. To access the pump and part of the hydraulic circuit, remove the lower side panel “C” of the unit.
Pressure switch
Refrigerant
TRIP
RESET
bar
°C
°F
bar
°C
°F
HP
R407C
27.5
63.9
147
19.2
48.9
120
Table 6
S
ETTING
OF
HP
PRESSURE
SWITCH
.
B
B
A
A
B
C
C
