Sub-Zero Wolf BBQ242BI, Service Manual, Page: 13 / 45

Page 13
OUTDOOR B BBQ G GRILLS
Theory of Operation
2-8
Cleaning and Maintenance
Burner Grates
The grates are composed of durable cast iron with a
porcelain enamel finish. Operating the grill on High for
a few minutes after cooking will help to burn off any
excess food. The wire brush included with the BBQ
can be used to clean the grill grates. Once the grates
have cooled, they can be lifted off and sprayed with a
commercial grill and stainless cleaner. They must be
rinsed and dried before they are put back into place.
Open Burner Grates
These grates are porcelain cast iron and can be wiped
clean while in place. They can also be removed when
cool and cleaned with warm soapy water.
Open Burner Heads
Simply lift the removable porcelain cast iron burner
heads straight up. Clean clogged gas holes with an
open paper clip or wire. Wash with soapy water, dry
and replace.
Venturis
Spiders or small insects may spin webs or build nests
inside of the venturis. This especially occurs in late
summer and fall when spiders are most active. These
nests can obstruct gas flow and cause a fire in and
around the valve. Such a fire can cause operator injury
and serious damage to the grill.
To help prevent a blockage and ensure full heat output,
follow these steps to clean and inspect the venturis
once or twice a month.
1. Using a flashlight, look inside of the end of the burn-
ers for webs or mud nests. See Fig. 2-9
2. Use the special venturi brush provided and push the
brush through the full length of each burner several
times.
See Fig. 2-9
3. For the grill venturis, clean the gas holes with a
paper clip if blocked. See Fig. 2-10
4. Replace the venturis and make sure the bell shaped
or cylindrical end is located over the valve orifices.
See Fig. 2-11
5. Test light to see if it is burning properly.
Grill Tank Bottom
If there is an accumulation of carbon or burned food on the bottom of the grill, use a spatula or scraper to push all
of the carbon and food to the front and into the drip pan to collect and dispose.
Drip Trays and Grease Cans
After cooling, the drip trays and grease cans may be removed and cleaned. The grease can should be cleaned after
each use.
Fig. 2-9
Fig. 2-10
Fig. 2-11