Greenheck Waterwash (458292) - Manual (Page 6)

6 April 2005
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SYSTEM COMPONENTS:
Hood:
The hood is shipped from the factory prepiped and ready to install. All waterwash components within the hood
are complete and ready for connection to hot water, electrical sources, the sanitary sewer drain and optional
cold water. All piping to and from the waterwash control station and the hood is by others. Wiring from the
control panel to the hood (for lights) is by others. All plumbing and wiring must conform to plumbing and
electrical codes. See Figure 1(previous page) for typical installation and location of electrical and plumbing
components.
Duct collars are also mounted at the factory unless requested otherwise.
Waterwash Control Station:
The waterwash control station contains all of the water and electrical controls in two separate compartments.
(See Figs. 2, 3, 4, 5, 6 & 7). The electrical side includes all electrical components, connections, and on/off
switches. These switches are illuminated and are mounted on the face of the cabinet. The water side includes
hot water connections, pressure/temperature gauges, the detergent reservoir and pump, water hammer arrestor,
the water solenoid valves, and optional continuous cold water mist piping.
Vacuum Breaker (shipped loose for field installation):
The vacuum breaker is installed at the highest point in the system’s piping to prevent backflow when there is no
water pressure to the hood. It must be installed a minimum of 6 in. above the hood water supply line
(See Figs. 2, 3 & 4).
Reduced Pressure Backflow Preventer - RPBP (shipped loose for field installation):
Where building codes require a reduced pressure backflow preventer, it will be provided in lieu of a vacuum
breaker when ordered. The reduced pressure backflow preventer is installed beneath the control panel (See
Fig. 5, 6 & 7). May by ordered mounted in 48 in. tall cabinet.
Detergent Pump-Related Components (shipped loose for field installation—installed
in RPBP systems. See page 42 ):
• Detergent line check valve
• Detergent tube (1/4 in. I.D., 3/8 in. O.D.)
Optional Features:
24 Hour / 7 Day Timer:
This feature allows the cleaning cycle to begin at any preset time after the fans are shut down, rather than
immediately after. This allows time, for instance, for completion of dishwashing to avoid a shortage of hot water.
Fans must be turned OFF just as with the standard cleaning cycle. Maximum six start times.
Multiple Hoods Sequenced Wash:
Where more than one hood must be washed, the control station is set up to wash each hood individually in a
prescribed sequence. This ensures that there will be adequate hot water for all hoods. Individual water solenoid
valves are provided for each hood to be washed in a multiple sequence. Maximum five sequences.
(Sequence solenoid valves are shipped loose for systems with vacuum breakers or optional continuous
cold water mist. They are mounted in the control station for standard systems with reduced pressure
backflow preventers.)
Low Detergent Indicator Light:
A sensor and indicator light are available to alert the operator when the detergent tank requires filling.
Continuous Cold Water Mist:
This feature continuously sprays a fine water mist in the exhaust plenum of the hood. The continuous cold water
mist is controlled by the same push button switch as the fan.