SCM CUBO2 SMART Oem Manual
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SCM CUBO2 SMART Oem Manual

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OEM Manual – CUBO
SMART
2
OEM Manual (EN)
Version UMTT-MT OEM rev. 2.1 date 28/05/2019
Pag. 1

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Summary of Contents for SCM CUBO2 SMART

  • Page 1 OEM Manual – CUBO SMART OEM Manual (EN) Version UMTT-MT OEM rev. 2.1 date 28/05/2019 Pag. 1...
  • Page 2 OEM Manual – CUBO SMART (pagina libera / empty page) Pag. 2...
  • Page 3 OEM Manual – CUBO SMART Manual Guide POINT 1-2 > INTRODUCTION & SAFETY POINT 3-6 > UNIT DESCRIPTION POINT 7 > COMMISSIONING POINT 8 > SOFTWARE – USER INTERFACE POINT 9 > SERIAL COMMUNICATIONS POINT 10 > MAINTENANCE POINT 11-13> ALARMS AND TROUBLES POINT 14-21>...

  • Page 4: Table Of Contents

    OEM Manual – CUBO SMART Contents Introduction ..................................5 Safety issues with CO - Safe handling ........................... 5 Precaution ................................. 5 Unit description & Main components ..........................7 Unit installation ................................. 8 Piping details ..................................9 Pipe Connections (Multi-Split) ..........................9 Oil traps ..................................

  • Page 5: Introduction

    Due to the high thermal coefficient of expansion of liquid CO2, fluid pipes must not be blocked.  All SCM units are protected against overpressure with pressure relief valves when required according to EN378 and PED.
  • Page 6 OEM Manual – CUBO SMART  Use of unsuitable components or those designed for HFC refrigerant may cause serious incidents such as equipment failure and rupture of the refrigerant cycle.  Securely place the cover on the electrical box and enclosure panel. Incomplete attachment may lead to penetration of water and living creatures, meaning potential current leak and fire/electrical shock.

  • Page 7: Unit Description & Main Components

    OEM Manual – CUBO SMART Unit description & Main components Medium temperature condensing unit is equipped with a BLDC compressors a Flash valve and an HPV valve. The compressor is taking in charge the evaporation pressure control for the medium temperature refrigerated devices.

  • Page 8: Unit Installation

    OEM Manual – CUBO SMART Unit installation  The unit has been designed for outdoor installation.  Respect distances for correct operation.  In the case of several units in series or in parallel mode, respect the minimum distances for properly maintenance.

  • Page 9: Piping Details

      The collector must be properly sized and installed in a horizontal position  SCM Frigo recommends connection with up to 3 remote evaporators, and maximum suction pipe length of 20 meters to each evaporator.  Liquid line must be properly sized to supply the farther evaporators (liquid velocity < 1 m/s is suggested).

  • Page 10: Test And Inspection Before Start-Up

    OEM Manual – CUBO SMART Test and inspection before start-up 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.

  • Page 11: Inspection Of The Gas Cooler

    OEM Manual – CUBO SMART Prack HECU Display Prack HECU Controller Protection Main switch Inspection of the gas cooler The fan reaches the specified flow rate by rotating in a specific direction as indicated on the unit. The air flow must never be obstructed. Cooling air must never be contaminated; avoid intake from pollutant industrial facilities or from manure yards/slurry or intensive cattle breeding centres, sources of ammonia pollutants.

  • Page 12: Commissioning

    (HPV) and the compressor equalization valves. To open the valves a software based function (VACUUM) is available in the Cubo2 Smart SW (find below some details). As an alternative you can open the valves manually. HPV valve can be opened with the Carel magnetic tools supplied with unit.

  • Page 13: Refrigerant & Oil Charging

    7.2.1 Oil charge  All CUBO Smart are equipped by SCM with an additional pre-charged of 250ml of Oil (type PAG VG100) in the receiver. This info is highlighted with a label applied in the switch panel door.  Take care to avoid moisture ingress. PAG oil is extremely hygrosopic! Oil type approved is DAPHNE PZ100S or RENISO PAG100.

  • Page 14: Estimation Of The Refrigerant Charge

    OEM Manual – CUBO SMART 7.2.3 Estimation of the refrigerant charge To get an estimation of total refrigerant quantity to charge in the system you should know:  Volume of evaporator coil  Diameter and Length of the piping The total charge of refrigerant will be the obtained summing up the single quantity needed for the evaporator and for fill the liquid line (refer to the below example).

  • Page 15: Charging Procedure

    OEM Manual – CUBO SMART Total refrigerant to charge is 4000gr. Example 2 In case that the evaporating volume is unknown, it is possible to estimate CO2 charge considering only the pipe length and summing up 2,4 lt (= 2400 gr). Piping length: 20mt for K65 1/2”.

  • Page 16: User Interface And Main Software Features

    OEM Manual – CUBO SMART User Interface and main Software features User Interface Manufacturer PW: 1234 Button meaning Display meaning Shows active alarms list and accesses to A Active alarm preset and manual the alarm log. operation. If pressed for more than 5 sec., resets all acknowledged alarms.

  • Page 17: On/Off Unit

    OEM Manual – CUBO SMART On/Off unit Even if the unit is powered, it will stay in stand-by (regulation OFF) until the user will not turn-on the regulation (regulation ON). The main steps to switch ON the regulation are reported here below: From main menu, press “Enter”...

  • Page 18: Regulation Set Point

    OEM Manual – CUBO SMART Regulation set point Select “Compressor” and press “Enter” Select “Regulation” and press “Enter If there are no serial communication between the CDU and the remote evaporators, compressor will be managed with a fixed setpoint. Suction set point request. P+I regulation mode.

  • Page 19: Mpxpro And Ultracella/Evo Carel Configuration

    OEM Manual – CUBO SMART MPXPRO and ULTRACELLA/EVO CAREL configuration.  When unit is connected to evaporator controller via RS485, regulation type switch automatically from fixed to floating set-point. Select “Evaporator” and press “Enter” Select “Configuration” and press “Enter” Type of controllers connected to the CDU Number of evap.

  • Page 20: Mpxpro And Ultracella/Evo Carel Regulation

    OEM Manual – CUBO SMART Connection to ULTRACELLA MPXPRO and ULTRACELLA/EVO CAREL regulation Select “Evaporator” and press “Enter”. Select “Regulation” and press “Enter”. Regulation setpoint Differential Offset, below the setpoint, to switch off the regulation (Smooth Lines) Maximum superheat offset (Smooth Lines) Superheat setpoint Control valve: Proportional gain Control valve: Integral time...

  • Page 21: Serial Communication (Psd Drivers, Evaporators And Supervisory System)

     Optimized oil management with “Oil washing function”  Optimized suction pressure regulation by using “Floating Setpoint”.  Evaporator setup and monitoring directly by Cubo2 Smart user interface. The communication between condensing unit and evaporators controller is allowed only with some specific model of controllers (MPXPRO or ULTRACELLA) equipped with a specific software version.

  • Page 22: Serial Connections And Wirings

    OEM Manual – CUBO SMART Serial connections and wirings MPXPRO/ULTACELLA connector to use for the serial connection with HECU (RX-, RX+, REF) Carel Controller Connection Port Note Terminals: GND, Tx/Rx+, Tx/Rx- MPXPRO Modbus, 19200bps Terminals 52, 53, 54 ULTRACELLA Modbus, 19200bps Pag.

  • Page 23: Recommended Annual Checks

    OEM Manual – CUBO SMART Recommended Annual Checks These checks should be carried out in conjunction with the customers’ requirements. Compressor and Inverter Check The compressor should inspected: Check tightness of all electrical terminals.  Check compressor bolting to the base ...

  • Page 24: List Of Alarms

    OEM Manual – CUBO SMART General overview A general inspection should be carried out Carry out a full system leak test  Repair any missing or broken insulation  Check functionality of all electrical components  Check functionality of pack anti-vibration ...
  • Page 25 OEM Manual – CUBO SMART Mask Serious Normal Topic Description Action Delay Reset index alarm alarm Regulation probes missing. One of the main probe is missing or ALU02 wrong configured: P_suc, P_GC, Shutdown Unit No delay Automatic T_out_GC, P_receiver or Pparallel_Suct No action on the regulation Discharge temperature probe...
  • Page 26 OEM Manual – CUBO SMART Mask Serious Normal Topic Description Action Delay Reset index alarm alarm High suction pressure. Settable ALB15 Suction pressure higher than alarm No action (by mask Automatic threshold (settable by mask Cae24) Cae25) Low suction pressure. Settable Suction pressure (read by probe) Shut off LT/MT compressor...
  • Page 27 OEM Manual – CUBO SMART Mask Serious Normal Topic Description Action Delay Reset index alarm alarm Warning low superheat. Suction SH of MT/LT compressor No action (it is just a ALW10 lower than alarm threshold (set on No delay Automatic warning) mask Cae30).
  • Page 28 OEM Manual – CUBO SMART Mask Serious Normal Topic Description Action Delay Reset index alarm alarm ALW46- Store number: Low superheat Display only (refer to 59-72- alarm MPXPRO / Ultracella user 85-98 manual) ALW47- Store number: Low suction Display only (refer to 60-73- temp.alarm MPXPRO / Ultracella user...

  • Page 29: Psd (Power+) Alarm Code

    OEM Manual – CUBO SMART PSD (Power+) alarm code 11.2 In the below table we reported a quick description about the PSD alarm code could occur in the unit with the possible causes and solutions. The PSD (Power+) alarm code is reported in the alarm masks or in the alarm logs (please find an example in the below picture).
  • Page 30 OEM Manual – CUBO SMART Alarm Description Possible cause Solutions code - wrong parameters values or inadequate motor. Motor overtemperature The temperature detected by the PTC Reduce the motor load. thermistor corresponds to a resistance > Check motor cooling. 2600 ohm. Reserved (for future...

  • Page 31: Psd Led Status

    OEM Manual – CUBO SMART Alarm Description Possible cause Solutions code Overload Alarm This alarm occurs when there Check power supply stability (this behaviour misalignment between the RUN command can happen if there are some undervoltage provide by the controller and the internal peak in the main power supply).

  • Page 32: Troubleshooting

    OEM Manual – CUBO SMART Troubleshooting Symptom/alarm Possible Cause Check Probes alarm/ wrong - wrong connection Check connection reading - wrong configuration configuration of the probe: - wrong range (for pressure probe) - type of probe - wrong type of probe - wirings - wrong placement of probe - probes range (min and max)

  • Page 33: Compressor Envelope

    OEM Manual – CUBO SMART Compressor Envelope Compressor envelope zone consists in the safety area (Suction/discharge pressure) where compressor is allowed to run without problem. Envelope Description Zone # Inside envelope High compressor ratio High condensing pressure High current High suction pressure Low compressor ratio Low delta pressure Low condensing pressure...

  • Page 34: Refrigerant Drawing (P&I)

    OEM Manual – CUBO SMART Refrigerant drawing (P&I) Pos. Ref. Description Note 1 Note 2 Rotary Compressor Inverter Gas Cooler coil Gas Cooler fan Refrigerant filter Dryer HP safety switch (PZH) Liquid receivers (parallel) Suction shut-off valve Liquid shut-off valve Service valve 125 (BPL1) Low pressure transducer...

  • Page 35: Hecu Controller Layout

    OEM Manual – CUBO SMART HECU Controller layout Analog Inputs Digital Inputs Analog Ouput Digital Ouput ON/OFF remote Modulating NO1-C1 Serious alarm fans Ambient temperature High pressostat NO2-C2 - alarm Suction temp. MT Evaporator Request NO3-C3 - Discharge temp. MT Change Setpoint NO4-C4 - Gas Cooler Outlet...

  • Page 36: Terminals Blocks Connection

    OEM Manual – CUBO SMART Terminals blocks connection  BMS serial connection, use terminal blocks: R-; R+; G.  On/off remote, use terminal blocks: DI1; GND3 (Remove bridge also present).  Remote digital alarm, use terminal blocks: NO1; C (closed in case of alarm). ...

  • Page 37: General Information And Limits

    44 dBA Sound pressure and sound power analytically calculated. Sound pressure level at 10 m in free field. Electrical details Electrical Information Cubo2 Smart line Size UMTT 030 MT DX UMTT 045 MT DX UMTT 067 MT DX UMTT 100 MT DX...

  • Page 38: Cooling Capacity Table

    OEM Manual – CUBO SMART Cooling capacity Table UMTT 030 MTDX (DY30) [Tentative Data] Cooling Capacity [W] SC:0 K - SH:10 K Evaporating SST Min speed Tamb °C 13,3 15,8 18,7 21,9 25,5 29,5 33,9 38,7 1070 1145 1131 1344 Evaporating SST Max speed Tamb °C...
  • Page 39 OEM Manual – CUBO SMART UMTT 067 MTDX (DY67) [Tentative Data] Cooling Capacity [W] SC:0 K - SH:10 K Evaporating SST Min speed Tamb °C 13,3 15,8 18,7 21,9 25,5 29,5 33,9 38,7 1359 1585 1822 1249 1466 1698 1947 1085 1295 1523...

  • Page 40: Conversion Pressure-Temperature Co2 (R744)

    OEM Manual – CUBO SMART Conversion pressure-temperature CO2 (R744) Temperature Pressure Temperature Pressure (°C) (°F) (Bar-abs) (psig) (°C) (°F) (Bar-abs) (psig) -50.0 -58.0 -9.0 15.8 27.2 -49.0 -56.2 -8.0 17.6 28.0 -48.0 -54.4 -7.0 19.4 28.8 -47.0 -52.6 -6.0 21.2 29.6 -46.0 -50.8...

  • Page 41: Note

    OEM Manual – CUBO SMART Note Pag. 41...
  • Page 42  The installer is responsible for verify, certifications, design, installation unit and all present systems.  SCM Frigo is not responsible for any malfunction in the system due by the unit and/or system design and/or  installation problems. SCM Frigo will not be responsible for operation unit or any system present, if above specific are not respected.

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