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W:\ELECTRICAL\MANUAL\BENCH\GENERAL INSTRUCTIONS\BENCHOVEN INS.8-18
10 APPENDIX B - MINIMUM PERIODIC BENCH OVEN INSPECTION REPORT
APPLY POWER AND CHECK:
15. ____ Supply voltage agrees with oven nameplate - measure and record: ____________.
16. ____ Check that temperature controller does not cycle separate (back-up) contactor.
17. ____ Shut down oven and make sure main contactor and separate contactor are open.
TEMPERATURE CONTROLS:
18. ____ Heat oven to operating temperature and check oven temperature against a separate
reliable temperature indicator to make sure temperature controller calibration is correct.
19. ____ Set oven temperature above excess temperature limit interlock setting to make sure
excess temperature limit interlock shuts down oven heat. If contactors are present,
make sure both main and separate contactors open.
20. ____ On controllers with thermocouples, disconnect one side of thermocouple connection to
confirm upscale break protection is operating on main temperature controller and excess
temperature limit interlock.
21. ____ On adjustable excess temperature limit interlock, set temperature 15 F above normal
maximum operating temperature.
LOCATION:
22. ____ No changes in the oven area have created a hazardous condition such as external heat,
vibration, mechanical hazard or corrosive environment.
23. ____ No process change has resulted in flammable liquids or explosive vapors or dust cloud
being stored or produced in vicinity of oven.
24. ____ Portable fire extinguishers in the area have been inspected.
25. ____ Fire suppression systems, such as sprinkler system, have been inspected.
26. ____ Sprinkler heads in oven and duct work has been inspected and cleaned.
TRAINING:
27. ____ Review job function, oven operation and emergency shutdown with operators and
supervisors.
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