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Owners Manual

ManualsBrandsMRCOOL ManualsAir ConditionersMDUCO180 Universal Series 2 to 3 Ton Cooling Only Condenser Unit with 36000 BTU Cooling Capacity, 3 Connection Types, DC Fan Motor and R410A Refrigerant in Gray
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Maintenance
Notice on Maintenance
Cabling
Charging Procedures
Decommissioning
Before decommissioning, it is essential that the technician become completely familiar with all of the
equipment in detail. It is recommended, and good practice, that all refrigerants be recovered safely. Before
decommissioning, an oil and refrigerant sample should be taken. This is in case an analysis is required prior to
the re-use of the reclaimed refrigerant. It is essential that electrical power is available before the task is
commenced.
Before decommissioning procedure, ensure the following:
1. You are familiar with the equipment and its operation.
2. The system has been isolated electrically.
3. Mechanical handling equipment is available, if required, for handling refrigerant cylinders.
4. All personal protective equipment is available and being used correctly.
5. The recovery process is supervised at all times by a competent person.
6. Recovery equipment and cylinders conform to the appropriate standards.
Decommissioning procedure:
1. Pump down refrigerant system, if possible.
2. If a vacuum is not possible, make a manifold so that refrigerant can be removed from various parts of
the system.
3. Make sure that cylinder is situated on the scales before recovery takes place.
4. Start the recovery machine and operate in accordance with manufacturer's instructions.
DO NOT overfill cylinders. Cylinders should have no more than an 80% volume of liquid charge.
Check that cabling will not be subject to wear, corrosion, excessive pressure, vibration, sharp edges, or any
other adverse environmental effects. The check should also take into account the effects of aging or continual
vibration from sources such as compressors or fans.
In addition to conventional charging procedures, the following parameters must be followed:
1. Ensure refrigerant contamination does not occur when charging equipment.
2. Hoses or lines should be as short as possible to minimize the refrigerant contained in them.
3. Cylinders must be kept upright.
4. Ensure that the system is securely and properly grounded prior to charging the system with refrigerant.
5. Take extreme care to avoid refrigerant overfill.
6. Label the system when charging is complete (if not already).
7. Extreme care shall be taken not to overfill the refrigeration system.
8. Prior to recharging the system pressure test with OFN. The system must be leak tested when charging is
complete and prior to commissioning. A follow up leak test must be carried out before leaving the site.