Tycho
17-07-2015, 10:25 PM
Techno Block, or Techno dung as it is called. (it rhymes better in Norwegian :))
An apprentice had been on the site and changed the DIXELL brain on the unit.
I came to help with setting up the new device since they didn't provide a proper settings list when it was delivered, or when we requested one.
Set it up and started plant. the on site engineer asked, "When will you mount the missing fan?" We did not know anything about a fan who was removed, called around to all installers who had been there, no one had removed any fan, went into the freezer, and yeah it lacked a fan at one evaporator and from ground level it seemed like the cable was isolated. The plant had run for about 20 minutes and the temperature was falling, was still talking to the engineer when I noticed a new sound, which I thought was from the production facility (I'm deaf in one ear :)) engineer asked if the sound was normal. I said that perhaps it was ice that had fallen into the fans from the ceiling (because both evaporators were ice-free, checked before I started it), stopped the plant and went into the freezer, no ice on any of the evaporators, heard a noise that sounded like ice on a hot element, got the engineer to start the system again so I could watch the fans while they were running, didn't see anything wrong, but it sounded like mayhem.
Got a ladder and climbed up, And it turned out that the missing fan had fallen inside (the four bolts that hold the motor to the grate had sheared off) and had done the heebiejeebies inside, and what I initially thought was water boiling on a heating element turned out to be a leak in the evaporator after the fan had finally broken it's blades off and gone bananas...
Closed the liquid valve and left the apprentice there to pump down the system as I rushed back to the workshop to pick up the acetylene-oxygene kit and some silver solder.
The customer had somewhere around $275.000 worth of king crab in there and when I told him it was leaking he asked if he should order a truck to move his goods to a freezing storage, I told him to give me 90 minutes before he made the call, from that time it took me 129 minutes to get the gear, gut the pipe to the bad evaporator, solder it shut and get the system running again...
I hate working on copper pipe systems :)
13819
13820
13823
An apprentice had been on the site and changed the DIXELL brain on the unit.
I came to help with setting up the new device since they didn't provide a proper settings list when it was delivered, or when we requested one.
Set it up and started plant. the on site engineer asked, "When will you mount the missing fan?" We did not know anything about a fan who was removed, called around to all installers who had been there, no one had removed any fan, went into the freezer, and yeah it lacked a fan at one evaporator and from ground level it seemed like the cable was isolated. The plant had run for about 20 minutes and the temperature was falling, was still talking to the engineer when I noticed a new sound, which I thought was from the production facility (I'm deaf in one ear :)) engineer asked if the sound was normal. I said that perhaps it was ice that had fallen into the fans from the ceiling (because both evaporators were ice-free, checked before I started it), stopped the plant and went into the freezer, no ice on any of the evaporators, heard a noise that sounded like ice on a hot element, got the engineer to start the system again so I could watch the fans while they were running, didn't see anything wrong, but it sounded like mayhem.
Got a ladder and climbed up, And it turned out that the missing fan had fallen inside (the four bolts that hold the motor to the grate had sheared off) and had done the heebiejeebies inside, and what I initially thought was water boiling on a heating element turned out to be a leak in the evaporator after the fan had finally broken it's blades off and gone bananas...
Closed the liquid valve and left the apprentice there to pump down the system as I rushed back to the workshop to pick up the acetylene-oxygene kit and some silver solder.
The customer had somewhere around $275.000 worth of king crab in there and when I told him it was leaking he asked if he should order a truck to move his goods to a freezing storage, I told him to give me 90 minutes before he made the call, from that time it took me 129 minutes to get the gear, gut the pipe to the bad evaporator, solder it shut and get the system running again...
I hate working on copper pipe systems :)
13819
13820
13823