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  1. patrickjmp

    Cooling tower and VSD

    don't vary the flow across tower without checking with the tower manufacturer. If you go below the minimum flow on the tower you will dry out the fill and damage it. This will in turn destroy tower performance. Also varying the flow across the tower will change the outlet temperature which...
  2. patrickjmp

    Does anyone make a VFD that'll do this?

    sorry for the commercial, but you asked a specific question. AC TECH model MC, nema 4 or nema 4x, can be set up for autorestart. in keypad speed mode the unit should go back to previous keypad speed
  3. patrickjmp

    Flexible hose pressure staightening forces

    The stainless steel braid is there to keep the hose in tension, therefore it shouldn't exert any thrust force on the pipe or other equipment. The braid keep the hose from expanding.
  4. patrickjmp

    Temperature control valve for closed loop cooling system

    dlynnbell, Either way will work, series or bypass. The best approach is depending on your auxilliaries. How many are there and do they require the same flow, temp, and pressure all the time. Does your load vary and how much. Closing up at least part of the system will increase the life of...
  5. patrickjmp

    Running different pumps in series

    Quentin, If the pumps are in series, and of the same rotation, one pump will not cause the other pump to run in reverse. Running pumps in series add their respective TDH capacity (head or pressure). It is OK to run two mismatched pumps in series, I would not recommend this for parallel...
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