leaking evap

[martinw58]

looked at a chiller that the customer had been told the evaporator was leaking the water was isolated but was left with 2 bar water pressure no pressure in fridge side but water pressure had held for about 3 weeks pressure tested with ofn for 24 hours no pressure drop vacuumed for 24 hours 1.55 torr shut pump off rise test for 30 minuits 1.65 torr find it hard to believe system has a leek or moisture will be taking oil samples to check condition but system was open for 3 weeks as the prvs have been removed