Hillphoenix CO2One, Руководство пользователя

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Hillphoenix Refrigeration Systems
CO
2
One Condensing Unit
Section 4: T
ranspor
t and Installation
During refrigerant pre-charging, it is necessary to use CO2 gas at a pressure value well above the triple point
(5.185 bar(a)) to avoid the formation of dry ice inside the system. Charging gas at 10 bars is recommended
throughout the circuit.
The charge points are RS1, RS2, and RS3, as well as RS1.LT and RS2.P (if equipped).
The reading of the pressure on each section is possible from the main screen of the electronic control.
ATTENTION: Do not power the solenoid valve coils if they are not installed on the valve itself.
The next charging phase consists of starting the equipment, placing the condensing unit and/or the compressors
in the ON position from electronic control, and following the steps provided in
Preparation for Startup
found later
in this section.
ATTENTION : Energize the high pressure and flash gas valves (HPV and VFL) if previously removed
ATTENTION : Energize the YVO valve solenoid coil (if equipped).
Charging can then continue with liquid on RSLIQ valve and/or vapor on RSS. Add evaporative load gradually.
ATTENTION: Cases and unit coolers must already be configured properly for use with CO2.
ATTENTION: During charging, the compressors will run and may set off alarms.
Charging is complete when liquid visible inside the sight glass is free of any bubbles.
The sight glass also detects the presence of moisture. If any is found, the system must be stopped and the
emptying and charging phases repeated.
DANGER: For refrigerant charging, recovery, and verification procedures, wear gloves for protection
against low temperatures. Refrigerant charging must be performed only by specialized technicians.
DANGER: The R744 (CO2) refrigerant is colorless and odorless. Its presence in the environment can
cause asphyxiation. All procedures must be performed in the presence of gas leak detectors and in
compliance with local codes and ordinances.