14
Troubleshooting
56
Large Tabletop Muffle
Thermo Scientific
Door switch does not
cut power to the
furnace chamber.
Door switch is not functioning.
Realign door strike or replace door safety
switch.
Safety relay malfunction.
Replace safety relay.
Repeated element
burnout.
Overheating furnace.
Do not exceed the maximum operating
temperature of furnace or recommended
continuous intermittent use values.
Heating harmful materials.
Enclose material in container. Clean up
spills on chamber. Ventilate chamber by
leaving door cracked slightly open when
heating known harmful reagents.
Contamination present from previous burnout. Clean and/or replace insulation material.
Wired improperly.
Check wiring diagram for correct wiring of
your furnace.
Inaccurate.
Oxidized or contaminated thermocouple.
Replace thermocouple.
Poor thermocouple connections.
Tighten connections.
Improper loading.
Use proper loading procedures.
Poor ventilation of base.
Clear area around furnace base.
Control out of calibration.
Contact customer service.
Summary of Contents for F30400
Page 6: ...Contents 4 Large Tabletop Muffle Thermo Scientific...
Page 10: ...1 Safety Information Warning 8 Large Tabletop Muffle Thermo Scientific...
Page 14: ...2 Introduction Principles of Operation 12 Large Tabletop Muffle Thermo Scientific...
Page 18: ...4 Unpacking 16 Large Tabletop Muffle Thermo Scientific...
Page 28: ...7 Single Setpoint Models w OTP Tuning 26 Large Tabletop Muffle Thermo Scientific...
Page 50: ...11 Furnace Loading 48 Large Tabletop Muffle Thermo Scientific...
Page 62: ...15 Replacement Parts List 60 Large Tabletop Muffle Thermo Scientific...
Page 64: ...16 Ordering Procedures 62 Large Tabletop Muffle Thermo Scientific...
