Amsta AMDES112E Notice D'utilisation page 32

• Connect the pipes and perform a leak test before charging refrigerant.
• Check the safety equipment before commissioning.
b) Maintenance
• Portable equipment should be repaired outdoors or in a workshop specially equipped
to service units with flammable refrigerants.
• Ensure sufficient ventilation at the repair site.
• Be aware that equipment malfunction can be caused by loss of refrigerant and that
refrigerant leakage is possible.
• Discharge the capacitors so as not to cause sparks. The standard procedure for shorting
the capacitor terminals generally creates sparks.
• Reassemble the sealed housings with precision. If the gaskets are worn, replace
them.
• Check the safety equipment before commissioning.
c) Repair
• Portable equipment should be repaired outdoors or in a workshop specially equipped to
service units with flammable refrigerants.
• Ensure sufficient ventilation at the repair site.
• Be aware that equipment malfunction can be caused by loss of refrigerant and that
refrigerant leakage is possible.
• Discharge the capacitors so as not to cause sparks.
• When brazing is required, the following procedures should be performed in the correct
order:
- Drain the refrigerant. If recovery is not required by national regulations, drain the
refrigerant to the outside. Make sure that the drained refrigerant does not present any
danger. When in doubt, one person should guard the exit. Make sure that the drained
refrigerant does not return to the building.
- Evacuate the refrigerant circuit.
- Purge the refrigerant circuit with nitrogen for 5 minutes.
- Evacuate again.
- Remove the parts to be replaced by cutting and not by flame.
- Purge the soldering point with nitrogen during the soldering process.
- Perform a leak test before charging refrigerant.
• Reassemble the sealed housings with precision. If the gaskets are worn, replace them.
• Check the safety equipment before commissioning.
d) Decommissioning
• If safety is affected when the equipment is taken out of service, the refrigerant charge must
be drained before taking out of service.
• Provide sufficient ventilation at the location of the equipment.
• Be aware that equipment malfunction can be caused by loss of refrigerant and that
refrigerant leakage is possible.
• Discharge the capacitors so as not to cause sparks.
• Drain the refrigerant. If recovery is not required by national regulations, drain the refrigerant
to the outdoors. Make sure that the drained refrigerant does not present any danger. When
in doubt, one person should guard the exit. Make sure that the drained refrigerant does not
return to the building.
• Evacuate the refrigerant circuit.
• Purge the refrigerant circuit with nitrogen for 5 minutes.
• Evacuate again.
• Fill with nitrogen up to atmospheric pressure.
• Place a label on the equipment indicating that the refrigerant has been drained.
e) Disposal
• Ensure sufficient ventilation in the workplace.
• Drain the refrigerant. If recovery is not required by national regulations, drain the refrigerant
to the outdoors. Make sure that the drained refrigerant does not present any danger. When
in doubt, one person should guard the exit. Make sure that the drained refrigerant does not
return to the building.
• Evacuate the refrigerant circuit.
• Purge the refrigerant circuit with nitrogen for 5 minutes.
• Evacuate again.
• Cut out the compressor, then drain the oil.
EN-12