Barrel Heaters - Hasmak.com.tr

Tubular/ImmersionProblem SolversWatlow Solutions To CommonImmersion/Mold ControlHeater ProblemsMold control immersion heaterreplacement intervals can belengthened or heater problemseliminated by using the optimumheater technology. Check the listbelow to see if your plasticsprocessing can be improved.ProblemFailure from dry-fire conditions orsome sheath materials meltingFailure from scale build-upBurnt or melted power wiringFailure from low-liquid conditionHeater Solution• Use heaters with high temperature alloy sheath such as Incoloy ®• Lower the heater’s watt density, remove scale in a preventative maintenanceprogram or drain and refill heat transfer fluid per manufacturer’sre<strong>com</strong>mendations• Use proper gauge wire with appropriate temperature rated insulation perNEC; periodically disconnect power and tighten all electricalconnections• Check low liquid protection device; make sure the heater’s no-heatsection is at or below the outlet nozzle’s centerline160