E D R O
D
y n a
W
a s h
®
T
h r e e
P
o c k e T
W
a s h e r
- e
x T r a c T o r s
23
S
ection
3
DynaWash
®
washer-extractors are designed for cleaning laundry only. The machine performs
the following principle functions: water and chemical injection, wash/clean, rinse, drain, and
water extraction. The washer-extractor is comprised of two basic parts: an outer shell or tub
and a revolving cylinder within the tub. The shell holds the water and chemicals and the
revolving cylinder holds the clothing. The cylinder is highly perforated with small holes on its
outer surface. These small holes allow the chemicals and water to enter, saturate and pass
through the clothing within the cylinder. The cylinder is divided into three compartments each
rated at
1
⁄
3
the total machine capacity. Multi-pocket machines provide greater operational
flexibility, allowing the operator to segregate multiple divisional loads into individual pockets,
which is not possible in open pocket machines.
The wash load is cleaned by chemical and mechanical action. The mechanical action is
dependent on the number and height of the rises and falls of the clothing per unit of time within
the cylinder. Chemical action is dependent on the correct amount of chemical product per unit
volume of water. Too much chemical product per unit volume of water causes chemical particle
entrapment within the garment fibers, which cause yellowing of the garment during drying and
finishing. Too little chemical product per unit volume of water decreases chemical cleaning
action.
Extraction is performed after the tub has been drained to remove large amounts of water from
the clothing. The extraction process is created by the acceleration of the cylinder from the slow
rotation of washing to a much faster rotation. With the cylinder rotating at such a high rate of
speed, the centrifugal force removes a majority of water from the clothing.
DynaWash
®
washer-extractors employ a fully automatic control with the ability to control all
operating features of the machine. The control controls the Wash Motor Rotation Sequence
(forward / pause / reverse) Extract Motor Speeds, Water Levels, Hot and Cold Water Valves,
Extra Water Inlet, Sewer Drain, Extra Drain, Internal and External Chemical Signals, Heating
device, DynOzone and the Door Lock. The control panel also contains Emergency Stop,
Forward and Reverse and Jogging push buttons.
The machines may be optionally equipped with a supplemental booster heater; direct or indirect
steam or electric immersion heater, capable of increasing the temperature of the bath water in
the event the hot water is inadequate. An optional Water Reuse System (or extra drain and
extra water inlet) provides the means to recapture rinse water, store it and supply it for future
wash steps. The extra hardware is controlled by the control.
THEORY OF OPERATION
