Menu «Sensor settings» (Fig.14) includes the following:
1 – Sensors calibration. Any change of these settings is prohibited as it may cause the Test Bench
breakdown. These settings are intended for specialists of MSG Equipment technical service for
the purpose of maintenance and repair.
2 – Setting vacuum for refrigerant pumping after the compressor diagnostics has been
completed. The recommended value is -0.6 Bar. The higher value will raise up the risk of the air
ingress into the system and subsequent deterioration of the Test Bench performance. The lower
value is permitted. It will cut the time necessary for the refrigerant evacuation albeit increase its
loss.
3 – Setting vacuum for air pumping before launching the compressor diagnostics. The
recommended value is -0.9 Bar. The higher value is not recommended as the Test Bench may not
reach it. The lower value is permitted. It will cut the time of vacuuming, but will increase the
amount of air in the system and therefore the frequency of the Test Bench refilling.
4 – Setting additional pumping time after the set vacuum has been achieved. Regardless of the
pressure, the Test Bench will be pumping the unit during the pre-set time period to allow
evacuation of the refrigerant separated from oil. We do not recommend to set additional
pumping time more than 5 minutes - 90% of the refrigerant will be released from the oil within
the first minute.
12
Figure 12 – Screen for main settings of the Test Bench
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Operation manual - test bench MS111
English
