Zephir ZRP9000CB Manual page 31

 Portable equipment shall be repaired outside or in a workshop specially equipped for servicing units with
flammable refrigerants.
Ensure sufficient ventilation at the repair place.

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.
When brazing is required, the following procedures shall be carried out in the right order:

1. Remove the refrigerant. If the 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.
2. Evacuate the refrigerant circuit.
3. Purge the refrigerant circuit with nitrogen for 5 min.
4. Evacuate again.
5. Remove parts to be replaced by cutting, not by flame.
6. Purge the braze point with nitrogen during the brazing procedure.
7. Carry out a leak test before charging with refrigerant.
Reassemble sealed enclosures accurately. If seals are worn, replace them.

Check safety equipment before putting into service.

d) Decommissioning
If the safety is affected when the equipment is putted 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 refrigerant leak is

possible.
Discharge capacitors in a way that won't cause any spark.

 Remove the refrigerant. If the 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.
Evacuate the refrigerant circuit.

Purge the refrigerant circuit with nitrogen for 5 min.

 Evacuate again.
Fill with nitrogen up to atmospheric pressure.

Put a label on the equipment that the refrigerant is removed.

e) Disposal
Ensure sufficient ventilation at the working place.

 Remove the refrigerant. If the 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.
Evacuate the refrigerant circuit.

Purge the refrigerant circuit with nitrogen for 5 min.

 Evacuate again.
Cut out the compressor and drain the oil.

TRANSPORTATION, MARKING AND STORAGE FOR UNITS THAT EMPLOY FLAMMABLE REFRIGERANTS
Transport of equipment containing flammable refrigerants
Attention is drawn to the fact that additional transportation regulations may exist with respect to equipment containing
flammable gas. The maximum number of pieces of equipment or the configuration of the equipment, permitted to be
transported together will be determined by the applicable transport regulations.
Marking of equipment using signs
Signs for similar appliances used in a work area generally are addressed by local regulations and give the minimum
requirements for the provision of safety and/or health signs for a work location.
All required signs are to be maintained and employers should ensure that employees receive suitable and sufficient
instruction and training on the meaning of appropriate safety signs and the actions that need to be taken in connection