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Commissioning and Maintenance
Further measures before the cold season
• Drain cooler coil before the start of winter if necessary. As the system pipes in this case
have relatively small diameters, it must always be assumed that some water will remain
in the unit following normal drainage. For safety reasons, the system must also be
blown through with compressed air to remove any remaining water.
Evaporator/condenser
NOTE
The following tasks and any necessary repair work may only be carried out by refrigeration
engineering specialists!
Be sure to observe regulations regarding refrigerants!
Commissioning of evaporator/condenser
ELECTRICAL HAZARD, DANGER FROM ROTATING UNIT PARTS AND
SHARP EDGES! OBSERVE PERSONAL PROTECTION MEASURES.
In doing so, be sure to observe the safety information on page 24 and page 25.
DAMAGE TO THE UNIT!
Make sure that the evaporator or condenser is never exposed to ambient temperatures
higher than 60 °C (due to shutdown of the fan and/or water temperatures (heater coil) >
60 °C).
The following commissioning steps must be carried out:
• A protective gas charge must be available when making the connections.
• Check that the configuration of the water inlet and outlet connections is correct.
• Check that the shut-off devices and other fixtures have been correctly installed; counter
flow principle with medium inlet on the air outlet side.
• Check that pipe connections and mountings are secure.
• Fill the refrigeration circuit with the medium for which the system was designed.
• Check tightness of system.
• Check that the the safety valves are functioning correctly.
• Check the maximum temperature and pressure when the system is in operation
(particularly when using R410A refrigerant)
Saturation temperature = 60 °C/Bursting pressure: 38 bar.
Maintenance of evaporator/condenser
ELECTRICAL HAZARD, DANGER FROM ROTATING UNIT PARTS AND
SHARP EDGES! OBSERVE PERSONAL PROTECTION MEASURES.
In doing so, be sure to observe the safety information on page 24 and page 25.
