nightstriker
22-05-2010, 02:30 PM
hello all, i work as customer service in shipping line responsible for reefer containers. and i face a problem with the reefer vendor where the container dischargesd after being loaded because its temp was higher than requested, his reply was as below
The commodity is Onions and its widely experienced for Onions and Garlics that they take too long time to achieve the setpoint, this is because the shippers never pre-cool these type of cargos and on the other hands they are considered from the highest heat generating commodities.
Technically: when the container’s controller sees that it has spent a long time running and its still out of range it begins to generate various sensor alarms, like 54, 56, 70 and 71, this alarms are false alarms and can’t be cleared unless the container achieve the setpoint.
The technicians actually tried to do something to fasten the pull down by increasing the subcooling (changing filter, cleaning condenser…etc), but believe me nothing will succeed, it has to take its time full and then all the alarms will be cleared by its self, so they went to an option to change the controller in order to get rid of the alarm generated but the vessel said that no time and they discharged the container.
so may you kindly help me to understand if what he say is true or what
The commodity is Onions and its widely experienced for Onions and Garlics that they take too long time to achieve the setpoint, this is because the shippers never pre-cool these type of cargos and on the other hands they are considered from the highest heat generating commodities.
Technically: when the container’s controller sees that it has spent a long time running and its still out of range it begins to generate various sensor alarms, like 54, 56, 70 and 71, this alarms are false alarms and can’t be cleared unless the container achieve the setpoint.
The technicians actually tried to do something to fasten the pull down by increasing the subcooling (changing filter, cleaning condenser…etc), but believe me nothing will succeed, it has to take its time full and then all the alarms will be cleared by its self, so they went to an option to change the controller in order to get rid of the alarm generated but the vessel said that no time and they discharged the container.
so may you kindly help me to understand if what he say is true or what