SCM CUBO2 AQUA, Руководство пользователя

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EN
OEM Manual – CUBO
2
AQUA
UMT/WG T MT Rev3.0 – 08/10/2021 Pag. 9-EN
9
6 Test and inspection before start-up
6.1 Control of the unit tightness
All units are pressure tested and checked for leaks.
Each unit is delivered with a nitrogen charge pressure of 2 bar.
It is recommended before proceeding with the installation, to check the pressure of the refrigeration
system of the unit using a suitable manifold gauge in order to detect possible leaks.
6.2 Preliminary controls according to EN 60204-1, visual controls
1. General PE terminal present and identified.
2. All other terminals clearly identified, with the ground symbol or two-colour yellow-green lead.
3. Terminals for exclusive connection to the equipotential connections.
4. Only one lead connected to each terminal.
5. Yellow/green insulation on the ground lead.
6. No live leads with yellow or green insulation.
7. No pipes or raceways used as lead protections.
8. No fuses, switches or circuit breakers on the equipotential protection circuit.
9. Lead sizes conform to the minimum sizes given by current standards.
10. Check the electric connections have been made correctly. Especially the phase connections: open
the box with the compressor terminal block, the connections must conform to the diagram given in
the compressor electric box.
6.3 Management of the system. Configuration of the controllers
The unit is equipped with the controller Carel prackCO2 Hecu, which is managing the working
parameters as following

MT compressor is managed according to suction pressure
 3way valve to modulate the water flow in the PHE Gas cooler is managed to keep the gas
cooler outlet temperature few degrees above the water inlet temperature
 Gas cooler pressure is managed according to the gas cooler outlet temperature in order to
achieve the best COP
 Receiver pressure is regulated to be at a fixed set point (38-40 bar)

All alarms related to compressor and pressure levels are monitored
Refer to electrical diagram and controller configuration list, attached to this manual, to check
the configuration.