Cornelius QUEST ELITE 2 FLAVOR Installation Manual page 55

QUEST ELITE 4 Flavor Installation, Service & Decommissioning Manual
NOTE: For appliances containing flammable refrigerants, refrigerant purging shall be achieved by
breaking vacuum in the system with oxygen-free nitrogen and continuing to fill until the working
pressure is achieved; then venting to atmosphere, and finally pulling down to a vacuum. This process
shall be repeated until no refrigerant is within the system. When the final oxygen-free nitrogen charge
is used, the system shall be vented down to atmospheric pressure to enable work to take place.
If compressors or compressor oils are to be removed, ensure that they have been evacuated to an acceptable level to make certain that
FLAMMABLE REFRIGERANT does not remain within the lubricant. The evacuation process shall be carried out prior to returning the
compressor to the suppliers. Only electric heating to the compressor body shall be employed to accelerate this process. When oil is
drained from a system, it shall be carried out safely.
Competence of service personnel Information of procedures additional to usual information for refrigerating appliance
installation, repair, maintenance and decommission procedures is required when an appliance with FLAMMABLE
REFRIGERANTS is affected. The training of these procedures is carried out by national training organizations or
manufacturers that are accredited to teach the relevant national competency standards that may be set in legislation.
The achieved competence should be documented by a certificate.
5) Label the equipment as indicated below:
Labeling
Equipment shall be labeled stating that it has been de-commissioned and emptied of refrigerant. The label shall be dated and
signed. For appliances containing FLAMMABLE REFRIGERANTS, ensure that there are labels on the equipment stating the
equipment contains FLAMMABLE REFRIGERANT.
Decommissioning
If safety is affected when the equipment is taken out of service, the REFRIGERANT CHARGE shall be removed before
decommissioning.
Ensure sufficient ventilation at the equipment location.
Be aware that malfunction of the equipment may be caused by refrigerant loss and a refrigerant leak is possible.
Discharge capacitors in a way that won't cause any spark, using a Supco CapDis tool.
Remove the refrigerant. If recovery is not required by national regulations, drain the refrigerant to the outside. Take care that
the drained refrigerant will not cause any danger. In doubt, one person should guard the outlet. Take special care that drained
refrigerant will not float back into the building.
When FLAMMABLE REFRIGERANTS are used:
A) Evacuate the refrigerant circuit.
B) Purge the refrigerant circuit with oxygen-free nitrogen for 5 min.
C) Evacuate again.
D) Fill with nitrogen up to atmospheric pressure.
E) Put a label on the equipment that the refrigerant is removed.
Information On Correct Working Procedures
Commissioning
Ensure that floor area is sufficient for REFRIGERANT CHARGE or that the ventilation duct is assembled in a correct manner.
Connect pipes and carry out a leak test before charging with refrigerant.
Check safety equipment before putting into service.
Maintenance
Portable equipment shall be repaired outside or in a workshop specially equipped for servicing units with FLAMMABLE
REFRIGERANTS.
Ensure sufficient ventilation at repair place.
Publication Number:721Q14101MNL - 50 - © 2022, Marmon Foodservice Technologies Inc.