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Chapter 2 - Principles of Operation
Frequency and Length of Wash - cont.
before a Wash Cycle comes on. As an example, if you have Medium Duty equipment and the Ventilator is
not washing adequately, the Command Center may be re-programmed, for either the Extractor Wash and/or
Plenum Wash, to Heavy Duty, reducing the Hours of Fan Operation for the Extractor Wash from 12 hours to
4 hours and the Plenum Wash from 36 hours to 16 hours. Refer to the Operation and Maintenance Manual
for the Gaylord Command Center for instructions on programming the times. Refer to the Troubleshooting
section page 4-2 for possible causes of inadequate cleaning.
Typical Example of Frequency and Length of Wash Cycles per Ventilator
Type of Cooking Equipment
Light Duty
Ovens, steamers and kettles
Light / Medium Duty
Braising pans, tilting
skillets, fryers, open burner
ranges, hot top ranges, and
conveyor ovens
Medium Duty
Griddles, grooved griddles
Heavy Duty
Gas and electric char
broilers, upright broilers,
woks and conveyor broilers
Extra Heavy Duty
Solid fuel broilers
Ventilator Section Wash Groups
The hot water pipe exiting the Wash Control Cabinet control is called the Main Feed Pipe. The Main Feed
Pipe is routed to the top of the Ventilator and then "tees" to two solenoid valves, one for the Extractor Wash
and one for the Plenum Wash (refer to page A-5 for an illustration). If there are two or more Ventilator sec-
tions, the Main Feed Pipe branches off and is routed to each section where it connects to the two solenoid
valves. Each Ventilator section washes independently of each other so that, for example, a Ventilator over
Wash System - Cont.
Table T- 2-16-1
Section
Extractor Wash
Hours of Fan
Length of
Operation
Wash Cycle
Before Wash
(in min.)
Starts
(Factory Set)
84
3
42
3
12
3
4
3
2
3
2-16
Plenum Wash
Hours of Fan
Length of
Operation
Wash Cycle
Before
(in min.)
Wash Starts
(Factory Set)
98
3
72
3
36
3
16
3
6
3
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