HEAT PUMPS - AIR CONDITIONING - REFRIGERATION - AIR HANDLING - HEAT EXCHANGE - NA 12.65 D
11
Horizontal package air conditionners
HCompact2 HA
9. SAFETY ELEMENTS
Automatic switch in the control circuit
Magnetothermal switch that protects the operation circuit against
continuous surges as well as against high currents of short duration
(short circuits).
Safeties at the compressor
The scroll type compressor that these units as standard have the
following safeties:
- Non-return valve built into the compressor.
- Temperature probe for the discharge from the compressor to protect
the unit with discharge temperatures greater than 135ºC.
Clogged fi lter detector (optional)
Differential pressostat for indication of maintenance to fi lters. Automatic
reactivation. This pressostat is installed in the auxiliary electric panel.
Air fl ow control (optional)
Differential pressostat that measures the fl ow variation in the air supply.
This allows the detection of fan belt breakages, since the fan relay only
detects operating faults that have arisen in the motor. This pressostat
is installed in the auxiliary electric panel.
This safety device is compulsory in units with electrical heaters.
Auxiliary
electric panel
Pressostat for
dirty fi lters
Pressostat for
fl ow control
High pressure pressostat
Connected to the compressor discharge, it will stop its operation when
the pressure at that point reaches the setpoint. It disconnects at 42 bar
and it is automatically reactivated.
Low pressure pressostat
When connected to the intake compressor, it will stop operating
when the pressure at this point drops below the tare value (caused
by obstructions in the circuit, excessive dirt in the fi lters, fan stop or
ice formation in the evaporator). It disconnects at 2 bar and resets
automatically.
Magnetothermals for line protection
They are located at the beginning of the power lines of the compressor
and motorfans to protect them.
Main door switch
By using a mechanical device, it impedes access to the electric panel
when the unit is with voltage.
Anti-fi re safety
With the return probe option, the electronic control can activate a safety
anti-fi e that, when the temperature of the air of comeback overcomes
them 60ºC (for defect), the unit stops.
This one will not be able to work again until the temperature does not
descend below 40ºC.
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