P
M
REVENTATIVE
AINTENANCE
36
to insure complete ashing of foreign materials.
Element life is reduced somewhat by repeated heating
and cooling. If the furnace is to be used again within a few
hours, it is best to keep it at the operating temperature or
at a reduced level such as 260°C.
General Cleaning Instructions
Wipe exterior surfaces with lightly dampened cloth con-
taining mild soap solution.