SystemAir SysAqua 105, Руководство по установке и обслуживанию

Страница: 38 / 80

English
Compressors use polyester oil. During maintenance interventions on the compressor, or if the
refrigeration circuit has to be opened in any point, do not forget that this type of oil is highly
hygroscopic, and avoid exposing it to the atmosphere during long periods, which would require to
change the oil.
Caution
Never use the compressor as a vacuum pump to drain the installation.
Caution
Warning
Il est préconisé de "basculer" la carte ILTC en mode TEST à chaque maintenance pour réaliser un
prédiagnostique.
Warning
Protect the SysAqua frame so as to get back oil that could flow out accidentally.
36 SysAqua
This equipment must be submitted to sealing checks minimum once per year, by a professional authorized
to perform such an operation . Refer to national requirements for the frequency of these checks.
17.3. MAINTENANCE PROCEDURES
Run the unit in refrigerating mode to determine whether the group's charge is correct by checking actual
sub-refrigeration.
Oil for refrigeration equipment is light and transparent. It maintains its colour for a long operating period.
As a refrigeration system designed and installed properly will run without problem, the compressor oil does
not require replacement, even after a long operating period.
Blackened oil has been exposed to impurities in the refrigeration piping system, or excess temperatures
on the compressor backflow side, which inevitably degrades oil quality. Blackening oil or degradation of its
qualities may also be caused by humidity in the system. Change the oil when its colour changes or when it
is degraded.
In this case, before restarting the unit, the refrigeration circuit must be emptied.
17.3.1. REFRIGERANT CIRCUIT
17.3.1.1. REFRIGERATING FLUID CHARGE
17.3.1.2. COMPRESSOR OIL
17.3.1.3. FILTER DRIER
Refrigeration circuits are fitted with filters drier.
The fluid indicator is used to check the refrigeration flow and humidity rate of the refrigerating fluid. The
presence of bubbles indicates that the filter drier is clogged or the charge insufficient.
In this event, even after cleaning the cartridge, the air bubbles remain, which means that the system has
lost part of its refrigerating fluid in one or several points, which must be detected and repaired.
The glass window contains a colour indicator. Comparing the indicator colour with the scale present on the
glass window allows to calculate the humidity rate of the refrigerating fluid. If excessive, change the filter
cartridge, run the system for one day, then check the humidity rate again.
A humidity rate within the preset limits requires no further intervention. If the humidity rate remains too
high, change the filter drier again, start the unit, and run it for another day.