Barrel Heaters - Hasmak.com.tr

W A T L O WDie andFormer <strong>Heaters</strong>Problem SolversWatlow Solutions To CommonHeater ProblemsProblem<strong>Heaters</strong> glow red on startupbefore reaching set point.Heater Solution1. Wiring Considerations:• If heaters are dual voltage, check wiring to ensure that heater halves arewired in series for higher voltage installation.• Check in<strong>com</strong>ing voltage for over voltage condition.2. Installation Considerations:• Since most heaters transfer heat through conduction, it is essential thatheaters fit tightly to the die. Check installation instructions to insure thatheaters are clamped to torque values indicated. See MI, THINBAND,Mica Clamp Torque Chart below.• Insure that dirt and grit are removed prior to installation. Any foreignmatter under heater will interfere with proper heat conduction.3. Thermal Considerations:• Review application and clamping graphs to insure heater watt density isnot excessive.• Examine machine to evaluate thermal mass in a particular zone. Highthermal mass can conduct heat away from zone being heated, drivingup heater temperature as heater expands.MI, THINBAND, Mica Clamp Torque ChartNickel Nickel Black Black OxidePlated, Dry Plated, Anti- Oxide, Dry Anti-SeizeStandard SeizeClamp Screw Size Torque (in.-lb) Torque (in.-lb) Torque (in.-lb) Torque (in.-lb)UNC #6-32 30 20 20 15UNC #8-32 40 30 25 20UNC #10-24 55 35 35 30UNC 1/4-20 80 55 50 45UNC 1/4-20 w/Springs 40 40 N/A N/AM6-1 80 55 50 45M5-0.8 60 40 35 35ExtrusionDie and Former <strong>Heaters</strong>237