a.
Features of Operation:
(1) Shut off supply and exhaust fans, if running, at beginning of
cleaning cycle.
(2) Subject accumulated contaminates on internal surfaces with
water at [60] [82] degrees C [140] [180] degrees F and a water
pressure of 0.275 MPa 40 psi. Provide pressure reducing valve.
(3) [Pump] [Inject] detergent into hot water supply line to
create wash-water.
(4) Provide scrubbing action by directing wash-water through
manifolds and then through spray nozzles placed so that all
internal surfaces are reached with streams of wash-water.
(5) Collect wash-water and grease within hood and pipe to outside
of hood to point indicated for indirect connection to building
plumbing system.
(6)
End wash cycle by timer.
b.
Plumbing Components: Provide brass or stainless steel spray heads
or nozzles and stainless steel distribution manifold in each hood.
Provide the following in fan control station and plumbing
enclosure:
(1)
Water solenoid valve
(2)
Shut-off valve
(3)
Shock absorber
(4)
(5)
Temperature gage
(6)
Line strainer
(7)
Vacuum breaker, conforming to ASSE 1001
(8)
Detergent reservoir, one gallon minimum
(9)
Detergent [pump] [injector]
(10)
Check valve
(11)
Timer
(12)
Pressure reducing valve
2.8.1.4
Fan Control
Locate in fan control station and plumbing enclosure. Provide delay-time
starter on starter leg of exhaust fan so supply fan will start first and
run 5 seconds before exhaust fan starts, to insure the required balance in
exhausted and make-up air flow. Provide the following operations:
SECTION 11400N
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