Juniper PTX10003-80C Hardware Manual page 180

182
Up to 39.7 lb (18 kg): One person.
39.7 lb (18 kg) to 70.5 lb (32 kg): Two or more people.
70.5 lb (32 kg) to 121.2 lb (55 kg): Three or more people.
Above 121.2 lbs (55 kg): Material handling systems (such as levers, slings, lifts and so on) must be used.
When this is not practical, specially trained persons or systems must be used (riggers or movers).