Hillphoenix CO2One, Руководство пользователя

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Hillphoenix Refrigeration Systems
CO
2
One Condensing Unit
Section 4: T
ranspor
t and Installation
Low refrigerant pressure
Conditions that can cause low suction pressures are:
•
Insufficient refrigerant charge
• Improperly operating metering devices
• Refrigerant leaks
An improper charge can result in reduced efficiency and can cause compressor failure. If refrigerant loss occurs,
safeguards are enabled to prevent operating with insufficient pressure. Refrigerant loss stops the compressor
and automatically resets the system. If suction pressure increases, the system automatically restarts.
Pressure monitoring
The pressure reading at the different points of the circuit is provided by:
• Electronic control
• The installation of pressure gauges
The pressure gauges must be connected to the service valves on the various points of the circuit. To access
the service ports, it is necessary to remove the covering panels.
Malfunctions and alarms
The presence of alarms is signaled by a red light on the electronic control terminal located on the unit door.
The light can be flashing or fixed; in the first case, the light indicates the presence of active and unseen alarms,
and the second indicates that an alarm has been viewed. A red light on the electronic control display in the
panel area generally indicates a malfunction and/or alarm presence. The specific cause can be identified by
checking the electronic control. These signals can be acquired by a supervisory system.
Some alarms involve manual reset and therefore require the services of a technician.
DANGER: Manual reset of the system or any of its components of it following an anomaly requires
the services of a qualified technician who should restart the system only after analyzing the cause
and resolving the problem.
DANGER: All work involving R744 (CO2) refrigerant must be carried out only by qualified
technicians trained to work with this type of refrigerant.