MP#17 Core Pump- Over Heating
When I came in it was out of the range of the thermometer so we shut it down to cool.
I placed a fan on it and wrapped it in a coil of water hose and pumped chilled water through it.
It came down to 120*F and we restarted it. I let it idle for about 30 minutes and it did not heat up at all. We then ran it for 5 hours until it reached 150*F. Then we shut it down again. Mike had already adjusted the compansator all the way out on it. After looking at it, I did not see a secondary relief valve for it on the valve stack. Everything I have read about systems overheating indicates that there are usually two relief valves used. The other thing I noticed was that the output stays on core set during most of the cycle loading the pump for 30 seconds each shot. I think that this is where the relief valve either needs to be added to it or the compensator adjusted correctly. When it cools down I will try to adjust it.
MP#15- Moving platen holes stripped out. Drilled and tapped 8 holes from 5/8-11 to 3/4-10.
It needs to be noted that I am beginning to see a trend of holes getting damaged in the smaller presses lately. Maybe we could get Jerome and the team leaders involved to identify some of the reasons this is happening and work out some solutions to prevent damage. Example: MP#13 had very good holes in it until last Friday when one of the clamps fell off during a run because it was set with too short of a bolt in it. It totally destroyed the threads when it ripped out. That hole will now have to be oversized.
Give me a call if there are any questions.
Sean
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