Labnics Equipment LSTF-100A Instruction Manual
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- 11 -5. Hints5.1. Repairs & ReplacementsA) Change of TubeAlways make sure that the reason for malfunctioning is due to element failure beforedisassembling the furnaceoCeramic tube can be freely changed for tube furnaces over 1400 C whereSiC and MoSi2 heating elements are used.Please use following procedure when changing tubes for furnaces with SiliconCarbide heating elements:1. Always disengage power before starting the replacement.2. Remove the thermocouple3. Remove the tube when cold (Temp. <45°C), slowly without any contact withthe SiC heating elements.4. Replace the new tube.5. Reconnect the thermocouple.6. Heat the furnace till 900°C.Always use the installment diagram supplied to change the SiC andMoSi2 heating elementsDuring reassembly process one must be careful to use the correct terminals.Reheat the Furnace to 900°C.Do not use insulation that appears loose .Most of the time the very same insulationcan be obtained from local market. We can of course deliver the concernedinsulation whenever requested.B) Replacement of Solid State RelayAlways disengage power before opening the back panel. Use proper screw driverand remove the back panel or control box. Disconnect the relays, taking note ofconnection diagram and coloring of wires. Remove the dis-functioning relay using ascrew driver and place the new one to the related rail. Close the back panel and heatup the furnace till 900°C.C) Replacement of ThermocoupleAlways disengage power before opening the back panel. Use proper screw driver.When there is thermocouple break down, the controller always gives a relatedwarning at display. When there is a problem with it remove the metal support ofthermocouple and remove the cables noting the coloring of connecting cable.Remove the thermocouple slowly taking note not to break the ceramic sheath ifthere is any. Reverse the process and heat up the furnace.ii |
This manual is suitable for:
LSCF-100ALSCF-100BLSCF-100CLSCF-200LSCF-300ALSCF-300BLSCF-300CLSCF-300DLSCF-400ALSCF-400BLSCF-400CLSCF-500ALSCF-500BLSCF-600ALSCF-600BLSCF-600CLSCF-700ALSCF-700BLSCF-700CLSTF-100ALSTF-100BLSTF-100CLSTF-100ELSTF-100FLSTF-100GLSTF-200ALSTF-200BLSTF-200CLSTF-200DLSTF-200ELSTF-300ALSTF-300BLSTF-300CLSTF-300DLSTF-400ALSTF-400BLSTF-500LSTF-D
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