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              Technical

              Troubleshooting


              JB Vacuum pumps are not intended for use on Amonia or Lithium Bromide (salt water) systems. Both of these systems will cause the pumps to lock up and be rendered inoperable. Use of JB pumps on either of these systems will void the warranty.

              IMPORTANT- Always check the oil level with the pump running. The reason for this is that if the vacuum is not broken before pumps are shut down the oil in the cover will seek the vacuum still in the cartridge and intake chamber. Then the oil level will drop in the sight glass and give the appearance of a low oil level. Then if the pump is refilled to the oil level line and the pump started, the oil that got sucked back into the cartridge and intake chamber will be kicked back into the cover and now you’ll be over filled and the oil will shoot out the handle (exhaust port).   

               

                       
              Keeping the Life of Your Pump
              includes some troubleshooting tips

              Cross Reference of Vacuum Measurements

              Cross Reference Boiling Temperatures of Water at Converted Pressures

              Isolation Valve Leak Test

              Principles of Deep Vacuum includes information on measuring evacuation, how to select the right vacuum pump, using a vacuum gauge and evacuation tips

              RSES article in association with JB on Deep Vacuum Principles and Application

              Troubleshooting Digital Superheat/ Subcooling Gauge (SH35N-SH36N)

               

               

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