Power And Control Circuits Electrical Cabinet And Electrical Hook-Up - Rivacold CO2NNEXT Instrucciones Para El Ensamblaje

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4.4.1. Power and control circuits electrical cabinet and electrical hook-up

CAUTION: The electrical hook-up operations must be carried out by qualified
personnel who has the necessary technical requisites established in the country
where the machine is installed.
CAUTION: The RCD switch must be placed in the immediate proximity of the
Co2Nnext, so that it is in clear view and accessible to a technician in the case of
maintenance.
CAUTION: The cross section of the power feeding cable must be adequate in relation
to the machine power input (the machine power input is shown on the label affixed
to the partly completed machine).
CAUTION: It is mandatory by law to connect that the machine be connected to an
efficient grounding system. Any responsibility for non-compliance with this provision
is rejected; any responsibility is also rejected were the electrical system to which the
machine is connected not be set-up in accordance with the norms in force.
The partly completed machine is accompanied by an electrical power and control cabinet.
In general, the electrical cabinet has the components and functions:
 Main power switch with door lock;
 circuit breakers to protect all loads;
 indicator light for mains power, machine run and alarm conditions;
 compressors protected by circuit breakers;
 control circuits power transformer;
 management of maximum pressure switches (optionally, also minimum pressure switches),
each in compliance with its functions
There electrical cabinet includes a customised electronic controlled with several functions:
 control with pressure or temperature probe;
 compressors operation drive including compressors rotation algorithm such as to ensure
uniform wear;
 alarms management;
 management of media temperature control system, if present.
The electrical supply (also in terms of voltage and frequency) provided by the Purchaser must be
sufficient to feed the machine correctly. Specifically, the following measures must be adopted:
Connect the machine main power switch to the supply with a power feeding cable that complies
with the specifications given in the electrical circuit diagram. The cable must be protected and
restrained to prevent it coming into contact with copper pipes, which may reach very high
temperatures.
Install a circuit breaker between the power feeding line and the machine onboard electrical
equipment rated in compliance with the application and statutory legislation in force in the country
of installation. Ensure the power feeding voltage is the same as the voltage shown on the
condensing unit dataplate. Permissible tolerance is 10% with respect to the nominal voltage.
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