| 1. Never open a contour and do not separate elements of central air of air before a system discharge. |
| 2. After separation of components of central air of air immediately close connections by the corresponding covers for an exception of hit of moisture of air in system. |
| 3. At installation of new components of central air of air take them from packing directly ahead of installation. |
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4. At connection of open unions always use new sealing rings. |