Hillphoenix CO2One, Руководство пользователя

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Hillphoenix Refrigeration Systems
CO
2
One Condensing Unit
Section 4: T
ranspor
t and Installation
Before bringing the equipment to full capacity, a number of preliminary checks are necessary to carriy out
at startup.
Check valves
Make sure that all the valves on the equipment and on the system are open, that the service valves are closed,
and that they all are fitted with caps.
Check operation of electronic expansion valves
Ensure that electronic expansion valve controls are properly programmed.
ATTENTION: Medium- and low-temperature systems must have a minimum superheat of 9°R and
a correct MOP value on the expansion valve control to avoid increasing the intake pressure in the
event of system shutdown. 35 bar 30°F and 507.5 PSI is recommended.
Pre-heating of the compressor casing (if equipped)
Crankcase heating for compressors is active during the evacuation procedure, if the latter is done as
instructed below.
Furthermore, crankcase heating is active if the compressor is off and the external temperature is low.
Insufficient compressor lubrication
In the oil circuit (if equipped) there is an oil separator, positioned on the discharge line, which redistributes the
oil collected to the compressors themselves through appropriate logics and circuits. Furthermore, the electronic
control includes checking of the compressor speed in order to guarantee the correct oil return to the compressor.