Commissioning and Maintenance CAIRplus
74 PR-2009-0096-GB • Subject to modifications • R8-10/2015
Procedures before winterization
• Drain water from the cooling coil before winter. As the coil piping diameter is small,
residual water can remain in the unit following normal evacuation. For safety
reasons, use compressed air to blow through the system in order to remove all
remaining water.
8.8 Cooling/heating coil
• Always make sure that the units are accessible only to authorized and trained
technical personnel. If necessary, use appropriate equipment to keep unauthorized
persons away from the unit.
• Have all leaks immediately eliminated by service personnel or a specialist
refrigeration company (refer to section 4.10).
• The safety sheet stating the type of refrigerant charged on the given unit shall be
firmly secured in the machine room of the unit in a well visible manner (refer to unit
identification plate or operation manual for the unit).
• Ensure that proper trays or similar vessels are mounted below the unit in order to
reliably capture oil and glycol liquids and prevent contact with the environment.
8.8.1 Commissioning of evaporator/condenser
DANGER!
• Please consider the safety instructions on page 5 and page 55ff when performing
all the described activities!
ELECTRICAL HAZARD AND DANGER OF ROTATING UNIT PARTS WITH
SHARP EDGES!
• OBSERVE PERSONAL PROTECTION MEASURES
• Please consider the safety instructions on page 5 and page 55ff when
performing all the described activities!
Notice!
Have qualified and licensed refrigeration engineers from certified and authorized
appointed contractors perform the following procedures and possible service jobs!
• Observe the relevant standards and legal regulations regarding
refrigerants.
ATTENTION
Risk of damage to the unit!
• Ensure not to expose the evaporator or condenser to the ambient
temperatures exceeding 60 °C (e.g. caused by fan dowmtime and/or water
temperatures (heater bank) > 60 °C).
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