INFORMATION #2 09-22-2003 - Laserfiche WebLink

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ELK RIVER ARENA 1000 SCHOOL STREET N.W. ELK PdVER, MN 55330 (763) 635 - 1141 Fax (763) 635 - 1144 To: Pat Klaers, Elk River City Administrator From: Rich Czech, Arena Manager Date: September 20, 2003 Subject: The Barn's Rink Repairs When starting the ice plant for the Barn, Sunday (September 14th) the temperature of the floor would not go down like it should. We contacted the service technicians that we use for service for this type of situation. We were told that we had moisture in the system that's causing the refrigeration to freeze when it got below freezing, causing a blockage in the system. This was caused from opening the floor to repair the piping in floor, not only from this season, but from pass seasons as well. After using several different techniques to thaw out the system, it was decided that we needed to let the system thaw out naturally; doing this will take at least until September 22nd. After this we will try to remove the refrigeration from the pipes in the floor. If the piping in the floor is not frozen this should be accomplished in one day. If it is still frozen, it may take a few days longer. Once the refrigeration is out of the pipes we will introduce nitrogen into the pipes in the floor. This will help remove the moisture from the pipes as well as to check the pipes in the floor for leaks. We then will put a vacuum on the pipes in the floor that will also help to remove any moisture in the pipes. This process will take four to six days, depending on how much moisture is in the pipes. After this process, we will then install dryer filters (that will take out the moisture out of the refrigeration stored in the low pressure receiver) and start introducing the refrigeration back into the pipes. The filters will have to be changed frequently to make sure that all the water is removed from the refrigeration. We will then try to operate the system as normal and, if all goes well, we should have ice ready for skating by October 6th. The cost of this repair is estimated at $3,500.00. The lost revenue from ice sales is estimated to be $8,000.00 If this process does not work, we may have to remove all the refrigeration from the system, put a vacuum on the system and introduce new refrigeration into the system. This process will take three to four weeks to accomplish, through the month of October and maybe into November. The cost of doing this work is $15,000.00 to $25,000.00. If we