Tycho
26-07-2008, 01:51 AM
Got a service call yesterday to one of the coastal express liners that run the coast of Norway with passengers/tourists and cargo
The ship had had a service engineer onboard in the northern part of norway (they brag about all the fishing they do, but obviously, keeping the fish cold isnt one of their traits), and he had told the Chief "I think you have to get this looked at in the south" when he said south he meant south of the polar circle.
So the ship continued it's voyage, and they called my service manager as they followed their route southwards...
and as they hit my town, I jumped onboard.
The problem they couldnt fix in the northern part was that the AC system shut down on LP.
They gave no reason, no possible cause just "get it fixed south"
Anyways I was set to follow the ship for two days, Aalesund to bergen and then from bergen and back to Aalesund
so I jumped onboard in Aalesund at midnight, got hold of the 1st engineer and he said "I'll show you to your cabin" I said "maybe I could have a quick glance at the system first, so I have some kind of idea of what I might expect to come up against tomorrow"
So he showed me the plant..
The cooler was drained of liquid, and the pilot reciever was full of liquid, I opened the PM1-65 valve (liquid injection to the cooler) and watched as the level in the cooler rose rapidly (sighing in relief that they hadnt frozen the cooler)
Checked the solenoid, it was burnt changed it and it still didnt work.
started checking the Bühler contacts in the pilot, took them apart and checked them one by one, still no go. and went to sleep...
in the morning me and the ships electrician banged our heads together and gave eachother a hand and found that the relay on the PLC had called it a night.
we didnt have a spare output module so I ended up soldering ut a spare contact from the motule we had and replacing that one with the broken one.
Put the output module back in the PLC and started testing...
When the pilot level rose above the setpoint the valve opened, but stayed open even when the pilot was empty...
Spent about an hour trying to find out what was wrong, before I opened the bühler on AC numer two and found that in my haste the night before I had mounted both contacts upside down...
It's working like a charm now...
But how many jobs are there in the worls where you go unboard a ship expecting to be lugging the endcover of a 1500Kw cooler and plugging a few pipes but instead find yourself peering through a magnifying glass exchanging a relay on a plc without skorching the contacts of the next relay.
Yes indeed I love my job :)
But at times I really hate it :)
The ship had had a service engineer onboard in the northern part of norway (they brag about all the fishing they do, but obviously, keeping the fish cold isnt one of their traits), and he had told the Chief "I think you have to get this looked at in the south" when he said south he meant south of the polar circle.
So the ship continued it's voyage, and they called my service manager as they followed their route southwards...
and as they hit my town, I jumped onboard.
The problem they couldnt fix in the northern part was that the AC system shut down on LP.
They gave no reason, no possible cause just "get it fixed south"
Anyways I was set to follow the ship for two days, Aalesund to bergen and then from bergen and back to Aalesund
so I jumped onboard in Aalesund at midnight, got hold of the 1st engineer and he said "I'll show you to your cabin" I said "maybe I could have a quick glance at the system first, so I have some kind of idea of what I might expect to come up against tomorrow"
So he showed me the plant..
The cooler was drained of liquid, and the pilot reciever was full of liquid, I opened the PM1-65 valve (liquid injection to the cooler) and watched as the level in the cooler rose rapidly (sighing in relief that they hadnt frozen the cooler)
Checked the solenoid, it was burnt changed it and it still didnt work.
started checking the Bühler contacts in the pilot, took them apart and checked them one by one, still no go. and went to sleep...
in the morning me and the ships electrician banged our heads together and gave eachother a hand and found that the relay on the PLC had called it a night.
we didnt have a spare output module so I ended up soldering ut a spare contact from the motule we had and replacing that one with the broken one.
Put the output module back in the PLC and started testing...
When the pilot level rose above the setpoint the valve opened, but stayed open even when the pilot was empty...
Spent about an hour trying to find out what was wrong, before I opened the bühler on AC numer two and found that in my haste the night before I had mounted both contacts upside down...
It's working like a charm now...
But how many jobs are there in the worls where you go unboard a ship expecting to be lugging the endcover of a 1500Kw cooler and plugging a few pipes but instead find yourself peering through a magnifying glass exchanging a relay on a plc without skorching the contacts of the next relay.
Yes indeed I love my job :)
But at times I really hate it :)