Sound Data; Safety Devices - HIdRos SDA Series Technical Manual

SDA

3.5 Sound data

Modd.
63
dB
75 72,1
100 74,1
150 80,1
200 82,1
153 80,1
203 82,1
Lw: Sound power level according to ISO 9614 fan with available static pressure 50 Pa.
50 Pa.

3.6 Safety devices

The high pressure switch stops the unit when the discharge compressor pressure is higher than the set value. The restart is automatic, done
when the pressure is under the level set in the differential value.
3.6.2 Defrost sensor
It's a device which signals to the electronic control, the necessity to make the defrost cycle. Once the defrost cycle is activated, the defrost
sensor determines also its conclusion.
damage the system. All the units are supplied, standard, with a control which defrost automatically the heat exchanger if necessary. This
control provides a temperature probe (defrost thermostat) on the unit evaporator. When the defrost cycle is required, the microprocessor
control (according to set parameters), switches the compressor off, while the fan remains in operation. At the end of the defrost cycle, it is
waited for the dripping time to allow the complete cleaning of the coil.
MTEC.6500.GB-F-1 Operation and maintenance manual SDA series English
125 250 500
dB dB dB
63,3 57,2 55,7
65,3 59,2 57,7
71,3 65,2 63,7
73,3 67,2 65,7
71,3 65,2 63,7
73,3 67,2 65,7
Sound data
1K 2K 4K
dB dB dB
54,6 49,2 45,8
56,6 51,2 47,8
62,6 57,2 53,8
64,6 59,2 55,8
62,6 57,2 53,8
64,6 59,2 55,8
21
Lw
8K
dB dB(A)
dB
36,7 72,9 59
38,7 74,9 61
44,7 80,9 67
46,7 82,9 69
44,7 80,9 67
46,7 82,9 69
fan with available static pressure
Rev. F 02-2021
Lp
dB(A)
52
54
60
62
60
62