Kiln Sitter Maintenance
The Kiln Sitter is manufactured from the finest materials available - selected for strength, durability and resistance to heat and corrosion. A ceramic kiln, however, creates intense heat and loaded ware often emits corrosive gases, all of which, in time, alter the normal shut-off function. Following are maintenance procedures and operating recommendations which will keep your Kiln Sitter doing it's job. Careful attention to these instructions will reward you with trouble-free firing.
Due to heat, corrosion and mechanical wear, the Kiln Sitter may get out of adjustment over a period of normal firing operations. Also, the repeated fall of the weight could force the trigger to creep. To assure consistent firing, it is recommended that the steps, outlined in the Dawson Owners Manual under "Adjustment", be carefully repeated every 20 firings or so.
Care of Cone Supports
Excess kiln wash must not be allowed to accumulate on the cone supports. Kiln wash can be easily removed by hand. If any non-removable materials accumulate, cone supports must be replaced. A hard bristle brush or metal brush can be used to clean the cone supports.
Care of the Swivel
Sluggish movement of the sensing rod can be caused by accumulation of residue or by corrosion of the chrome-plated swivel. Should this occur, remove claw from sensing rod. Push sensing rod in and out (again the slight play in the swivel assembly) while rotating rod between the fingers. If this does not eliminate the problem, the nipple and swivel assembly must be replaced. Free and easy movement of the sensing rod should be checked before each firing.
Continued operation at high fire temperatures will eventually cause the end of the rod to deteriorate or bend. This will, in turn, affect the adjustment of the trigger and claw. If this occurs, the rod must be replaced.
The Kiln Sitter is engineered to withstand kiln temperatures up to and including cone 8. Temperatures higher than this limit will reduce the normal lifetime of the cone supports and sensing rod.
Venting of Kiln
During the firing of clay, glazes and especially metallic colors, various gases are generated which can corrode the metal parts of the Kiln Sitter. It is recommended that the kiln be slightly vented (provided you have a Kiln Sitter installed and no other automatic vent system) during the entire firing period by leaving the top peephole open at allow the gases to escape. All other peepholes should be closed.