2019EN 378-4:2016+A1:2019 Refrigerating systems and heat pumps - Safety and environmental requirements - Part 4: Operation, maintenance, repair and recovery
2017EN 378-4:2016/PRA1:2017 Refrigerating systems and heat pumps - Safety and environmental requirements - Part 4: Operation@ maintenance@ repair and recovery
2016EN 378-4:2016 Refrigerating systems and heat pumps - Safety and environmental requirements - Part 4: Operation@ maintenance@ repair and recovery
2008EN 378-4:2008 Refrigerating systems and heat pumps - Safety and environmental requirements - Part 4: Operation, maintenance, repair and recovery (Incorporates Amendment A1: 2012)
2000EN 378-4:2000 Refrigerating Systems and Heat Pumps - Safety and Environmental Requirements - Part 4: Operation@ Maintenance@ Repair and Recovery
1993EN 378-4:1993 Refrigerating Systems and Heat Pumps - Safety and Environmental Requirements - Part 4: Selection of Refrigerants