MAN - Pyrolytic Oven - REV: Original | H. Maintenance 33
H.6 Replacement of Parts
When electrical components must be replaced, refer to the Parts List included in this manual for the appropriate
descriptions. Consult Factory for current prices. Electrical parts on the oven are warrantied for one year.
Every Six Months
1. Exchange Hi-Temp door gasket:
a. The oven door has two gaskets. One is a high temperature gasket that serves both as a seal and
a heat barrier to protect the silicone gasket. The high temp gasket contains an inner core stainless
steel mesh, covered with woven glass ber. Because of its porous nature, the high temp gasket will
gradually absorb condensed smoke or vapors from inside the oven and begin to harden.
b. The high temperature 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. The blackened, old gas-ket
will come out of the oven looking almost new. The gasket can be used again unless it was me-
chanically torn, ripped, or otherwise damaged during removal.
c. During the cleaning cycle for the gasket, verify that the controls are working properly.
2. Check draft
a. Turn the power on. Go to Manual screen and start the Draft Inducer.
b. Move the draft control to make sure the range of draft pressure can be adjusted from at least
0.02 to 0.06.
c. Leave the draft control in position to give a draft pressure of about 0.04.
d. Remember, the draft sensor is only a measuring device; it only reads the draft and does not
create draft. Also, the draft sensor is set to read a negative pressure in the oven as positive
pressure on the screen (essentially it reads backwards).
3. Clean draft inducer blower (exhaust blower)
a. The squirrel cage blower of the draft inducer should be blown out with compressed air to remove
accumulated dust and lint.
4. Removal of Ashes and Pigments
a. 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
gasket(s) where it might interfere with a good, tight seal.
5. Clean the Oven Trays
a. Both trays contain special catalytic pellets in a stainless steel mesh. The catalyst helps destroy
the pyrolysis gases inside the oven chamber by reaction with the oxygen in the oven atmosphere. It
should be removed and rinsed with water to get the catalyst pellets free of obstruction or coatings,
which would prevent it from working.
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