Dometic ColdMachine CU 85

We found the unit wasn't gassed correctly by the factory testing found no leaks but it was low on gas . It was installed by experienced technician. Ran for 3 days but wouldn't freeze 50 L box . Day 4 it wouldn't cool . Expensive to repair technician removed pre gassed connections which are problematic . Would have been cheaper & easier to get an un gassed unit to start with.