Hussmann Ingersoll Rand User Manual page 244

9. Allow the full system to operate until it stabilizes.
10. Adjust all expansion valves, EPR valves, control valves, and other controls to
their proper settings.
11. Re-check refrigerant charge and oil levels, adding refrigerant and oil as
needed.
Items to Watch and Check During Start-up
Excessive Vibrations
The whole system, especially the piping and capillary tubes must be designed to prevent
abnormal vibrations. If necessary, additional protective measures must be taken.
Attention!
Pipe fractures and leakages at compressor and other components are possible! Avoid
strong vibrations!
Compressor Cycling Frequency
A compressor should not be started more than 8 times per hour. Therefore a minimum
running time should be guaranteed:
IR2C0173 – IR2C0692
IR4C0770 – IR4C2397
IR4B2707 – IR6B6462
Check Performance and Operational Information
Evaporating temperature
Suction gas temperature
Condensing temperature
Discharge gas temperature
Oil temperature
Compressor Start / Stop frequency
Operating current
Distribution voltage
Installation and Start-up
Min. Running Time
2 min
3 min
5 min
10