Switching Off The Unit And The Main Fuse/Mcb; Evacuating The Refrigerant Lines And Internal Devices - Viessmann Vitoclima 300-S Service Instructions For Contractors

Further details regarding the individual steps

Switching OFF the unit and the main fuse/MCB

Danger
Touching 'live' components can result in the transfer of dangerous body
currents.
Isolate the unit from the power supply, check that it is no longer 'live' and
safeguard against unauthorised reconnection.

Evacuating the refrigerant lines and internal devices

Evacuating type OD306H
Note
Prior to evacuating the system, carry out a leak test (pressure test with dried
nitrogen).
Commissioning, inspection, maintenance
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