Unified Brands VENTILATION SYSTEMS User Manual
Page 25
22
D. Grease Collection Receptacle
Should be emptied at least once a day, and
cleaned daily with a strong detergent.
E. Hood Canopy
1. Inside hood canopy should be wiped
down as needed. The area at the exhaust
intake openings should be wiped down daily.
2. Inspect inside of extraction chamber at
least monthly, to insure proper cleaning and
that the trough is free of foreign matter.
F. Detergent System
1. Detergent tank should be checked at
least weekly; and cleaned every six months.
Always keep cover on tight to prevent
spillage and evaporation.
2. A colloid type detergent, is recommended
due
to
its
non-caustic,
non-toxic,
biodegradable characteristics. It will not
damage the rubber or synthetic parts of the
pumping system. AVTEC recommends
using EVAC Detergent. Available thru your
local Service Agents or call Factory. See
page 28 for more information.
3. All fittings should be checked for air
tightness at least monthly.
4. Foot check valve should be cleaned every
six months.
G. Fusible Link Replacement
1. Blade Type [Refer to fig. 27]
Exhaust damper fusible links are rated at
350°F [P/N AS LNK0302] and Air Make-
up damper fusible links are rated at 286°F
[P/N AS LNK0303]. Fusible links shall be
replaced at least annually per NFPA 96, 8-
2.1.2. New "S" hooks [P/N FA HOK0301]
should be used whenever the fusible links
are replaced.
Cable tension can be adjusted by moving the
eye-bolts in and out to ensure that the
damper is fully open.
fig. 27
2. Curtain Type [Refer to fig. 28]
When make-up air is brought directly into
the capture area a fire damper is required at
the duct collar.
The curtain damper is
equipped with a 212°F fusible link [P/N AS
LNK0006]. Fusible links shall be replaced at
least annually per NFPA 96, 8-2.1.2. New
“s” hooks [P/N FA HOK0301] should be
installed whenever the fusible links are
replaced. These links are replaced by
unfolding the retaining strap and removing
the clover hook and fusible link as a unit.
Be careful to hold the curtain damper in
place as a spring will try to pull it closed.
fig. 28