MAN - Pyrolytic Oven - REV: Original | H. Maintenance
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H. Maintenance
H.1 Door Seals and Gaskets
The oven door has two gaskets. One is a high temperature gasket which serves both as a seal and a heat barrier
to protect the silicone gasket. Periodic replacement of the high temperature gasket is considered necessary routine
maintenance. The high temp gasket contains an inner core stainless steel mesh, covered with woven glass fiber.
Because of its porous nature, the high temp gasket will gradually absorb condensed smoke or vapors from inside
the oven and begin to harden. This gasket can be recycled and used again by removing it, replacing it with a new
high temp gasket, and cleaning the old gasket inside the oven at the same time a typical load of glass or metal parts
are cleaned. The blackened, old gasket will come out of the oven looking almost new. The gasket can be used again
unless it was mechanically torn, ripped, or otherwise damaged during removal.
The silicone gasket mounted on the oven door serves as a second seal for the oven chamber and prevents
excessive air leakage inside the oven. Parts should never be loaded such that any molten organic residues drains
from the metal parts, misses the metal pan on the floor of the oven, and runs down on the door gaskets. When cool,
such material can harden and rip the door gasket off when the door is opened.
H.2 Cleaning the Oven Trays
Both of the two oven trays has a bottom of stainless steel wire mesh containing special catalytic pellets which help
destroy the pyrolysis gases inside the oven chamber by reaction with the oxygen in the oven atmosphere. As these
trays get dirty and accumulate inorganic ashes, it should be removed and rinsed with water to get the catalyst
pellets free of obstruction or coatings which would prevent it from working.
H.3 Removal of Ashes and Pigments
Ashes, pigments, dirt, or other inorganic matter left from the cleaning process should be removed as necessary to
maintain good housekeeping. Do not allow such material to collect at the door gaskets where it might interfere with a
good, tight seal.
H.4 Periodic Empty Tests & “Self-Cleaning” Cycles
Every 3 to 6 months, run an empty test run (cycle) during daytime hours so the operator of the oven can verify that
the oven controls are working properly. With no glassware in the oven, this test run will also act as a “self-cleaning”
cycle and help remove any residual, built-up carbon residues which may be deposited by numerous moderate to
heavy loads of organic contaminants.
H.5 Cleaning of Draft Inducer Fan
Periodically, the squirrel cage blower of the Draft Inducer should be blown out with compressed air to remove
accumulated dust and lint.
Summary of Contents for Pyro-Clean
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