83
Measure Completed Comments
%
Ventilating the work location
■
Carry out repairs outdoors, or provide adequate ventilation for
the work location before interfering with the refrigerant circuit or
commencing any welding or brazing/soldering work.
■
The ventilation must be maintained for the entire duration of the
work. The ventilation should dilute any refrigerant that may es-
cape and should ideally discharge it to atmosphere.
&
Checking the refrigeration system
■
Any replacement electrical components must be suitable for the
application and must correspond to the manufacturer’s specifi-
cation. Only replace faulty components with genuine Viessmann
spare parts.
■
Carry out all component replacements in accordance with Viess-
mann guidelines. If required, consult Viessmann Technical Serv-
ice.
Perform the following checks:
■
The refrigerant charge must not be greater than permitted for
the installation room.
■
Check the function of the ventilation system. The ventilation
apertures must not be blocked or obstructed.
■
If a hydraulically separated system is used, check the secondary
circuit for the presence of any refrigerant.
■
Labels and symbols must always be clearly visible and legible.
Replace any illegible information.
■
Refrigerant lines and components must be installed in such a
manner that they do not come into contact with substances that
can cause corrosion.
Exception: The refrigerant lines are made from corrosion-resist-
ant materials or are reliably protected against corrosion.
/
Checks on electrical components
■
Safety checks must be carried out for maintenance and repair
work on electrical components: See below.
■
In the event of a safety-related fault, do not connect the system
until the fault has been remedied.
If it is not possible to remove the fault immediately, provide a
suitable interim solution for the system’s operation if required.
Inform the system operator.
Carry out the following safety checks:
■
Discharge the capacitors: Ensure no sparks are created when
discharging.
■
Do not position any live electrical components or cables in the
immediate vicinity of the appliance when filling or extracting re-
frigerant or when flushing the refrigerant circuit.
■
Check the earth connection.
Maintenance
Checklist for maintenance work (cont.)
6199592
Maintenance
To Next Page
Loading...
