Vertiv | Liebert® DM | User Manual 100
System Operation and Maintenance
7.3. Outdoor Unit Maintenance
7.3.1. Refrigeration System
The components of the refrigerant system should be inspected monthly to find out any abnormal operation phenomenon.
Refrigerant piping must be properly fixed and not allowed to vibrate against wall, floor or the unit frame. Inspect all
refrigerant piping every six months for signs of wear.
7.3.2. Air-Cooled Condenser
• When the airflow through the outdoor unit is restricted or blocked, use compressed air or fin cleaner (alkalescence) to
clean the dust and debris o the condenser that reduce the airflow.
• The compressed air should be blown at the reversed airflow direction. In winter, do not let snow to accumulate around the
side or underneath the condenser.
• Check for bent or damaged fins and simply repair them if necessary.
• Check all refrigerant pipes and capillaries for vibration and support them if necessary.
• Carefully inspect all refrigerant piping for signs of oil leakage, determine the leakage position and fix them immediately.
To Next Page
Loading...
