Wash Cycle - GAYLORD CG3-UVi-SPC Series Technical Manual

Chapter 2 - Principle of Operation, Page 2-8__________________________________________________

Wash Cycle

The Ventilator's wash system is comprised of six wash manifolds with spray nozzles. (Refer to Figure 2-
9-1). Manifolds #1 and #2 wash the Extraction Chamber, the Particulate Separators, and the
bottom of the UV Lamps (Refer to Figure 2-9-1). Manifold #3 washes the bottom of the ESP Cells
and manifolds #4, #5 and #6 washes the top of the ESP Cells (Refer to Figure 2-9-1). All the
components to operate the Wash Cycle, the detergent pump, detergent tank, solenoid valves and
other plumbing components are located in the Wash Control Cabinet (Refer to Figure 2-11-2). There are
two Solenoid Valves in the Wash Control Cabinet, one for manifolds #1, #2 and # 3 and one for manifold
# 4, #5 and #6 (Refer to Figure 2-9-1 and 2-11-2). The Wash Cycle is sequenced, first washing the top of
the ESP Cells in a sequence of Wash, Delay, Wash, Delay and then a Rinse. Then the Extraction Chamber,
Particulate Separator, UV Lamps and the bottom of the ESP Cells are washed. Refer to Table T-2-8-1 for
a typical Wash Cycle sequence.
The Wash Control Cabinet is piped to the building hot water system. The required temperature of the
water is 160°F. Min. - 180° F. Max. The required water pressure is 40 PSI Min. - 80 PSI Max.
The Wash Cycle sequence is activated each time the exhaust fan is shut off by pushing the START
WASH button on the Command Center or automatically at a specific time as programmed in the
Command Center (Refer to Figure 2-7-1). When activated the UV lamps shut off, the ESP Cells shut off,
and the exhaust and supply fans shut off. If the Ventilator is a standard GC3-UVi-SPC the electric
damper motor is energized and the damper begins closing forward to the wash position (Refer to
Figure 2-9-1). The damper takes approximately 45 seconds to close to the wash position. Refer to Pages
1-6 and 1-7 for an explanation of damper options.
Once the damper closes, the Wash Cycle sequence begins. If the Ventilator does not have an electric
damper, the Wash Cycle sequence begins immediately after pushing the START WASH button.
are six sequences in the Wash Cycle as shown in Table T-2-8-1. When the wash is initiated the first
sequence begins; Solenoid Valve #1 opens and the Detergent Pump is energized, and hot detergent
water goes to the Upper ESP Wash Manifolds (#4, #5 and #6) for the length of time programmed in the
Command Center (Refer to Figure 2-9-1 and 2-11-1). The washes, delays and rinse continue as shown in
Table T-2-8-1. During the rinse cycle the detergent does not come on.
Typical Wash Cycle Sequence with Factory Recommend Times
Sequence # Manifold #
1 4, 5 and 6
2 All Off
3 4, 5 and 6
4 All Off
5 4, 5 and 6
6 1, 2 and 3
Table T-2-8-1
Name of Wash
Upper ESP Cell Wash
Delay
nd
2 Upper ESP Cell Wash
Delay
Rinse
Extraction Chamber
Particulate Separator/UV
Lamp Wash/Lower ESP
Cell Wash
Wash Time
in Minutes
3
20
3
20
5
See Table
T-2-10-1
There