Boreas Technologies Air Handling Unit - Maintenance; The Draining System; Commissioning

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• All unit connections must be completed before initial start-up. (Copper pipe connections,
Expansion valve connections, etc.)
• Make sure gas cut-off valves are open. (Liquid Line, Suction Line, Discharge Line, Compressor
Input-Output)
7.5.2 Maintenance
It is recommended that maintenance procedures be carried out every three months. These maintenance
procedures are of critical importance for both cooling efficiency and the total efficiency of the system.
The section in which the heat exchanger is located has a high temperature differential with the
environment. For this reason, do not enter the section until the temperature difference has
dropped to approximately 10°C.
7.6 THE DRAINING SYSTEM
All provisions stated under the heading of 2. GENERAL SAFETY must be applied during the
commissioning and maintenance of the draining system.
The uninterrupted and problem-free operation of the draining system is critical in preventing
flooding within the unit.
7.6.1 Commissioning
The calculation and application of the correct trap height is of critical importance for proper operation of
the draining system. For this reason, the trap height should be implemented as described in Section 6.3.
Care must be taken to ensure that the system is filled with water before commissioning, if it is not, then
it must be completely filled with water.
• The unit’s connection to the draining system must be checked, and care must be taken to ensure
there are no leakages.
• Care must be taken to ensure that the draining system has a sufficient angle of inclination.
Periodic Maintenance of the Direct Expansion Cooling Coil:
• Check whether the heat exchanger conforms to hygiene standards, and check for
accumulated dust, corrosion, and damages.
• Check fin surfaces, if there are any dents, straighten using a fin comb.
• Check for ice formation on the surface. If ice formation occur, call the BOREAS A.Ş. Technical
Service.
• Check the expansion valve.
• While maintenance, the refrigerant must be prevented from leaking into the atmosphere