Knight Equipment DDS-1000 Installation Manual
DDS-1000
INSTRUCTION MANUAL
THEORY OF OPERATION
The DDS-1000 Dry Dispensing System is designed to dispense solid, or “screen-feed” chemicals into a washer. Each
dispenser includes a 24 volt water solenoid, Power Bowl Ultra dry detergent feeder (with vacuum breaker), step-down
transformer, fully assembled and ready to install.
The DDS-1000 is designed as a “stand alone” dispenser that can be used on any top-load or front-load laundry
machine. The DDS-1000 feed time is controlled by the laundry machine programmer.
GETTING STARTED
Be sure to inspect the installation site prior to beginning your installation. It’s important that you locate the source for
dispenser power (signal) as well as hot water. To complete the installation, you may need the following parts:
• Hose “Y” with 3/4" female garden hose thread
• High pressure hose, 3/4" MGHT x 3/4" FGHT
• #10 x 1" sheet-metal screws and wall anchors
• Optional top-mount bracket kit #7600668 is av ailable for top mounting the dispenser on the laundry machi ne
INSTALLATION
(1) Mount the DDS-1000 on the wall in a convenient location for operators to load and unload product containers.
The dispenser should be installed above the vertical height of the injection point on the washer.
(2) Connect the 5/8" ID vinyl injection tubing supplied with the unit to the outlet fitting on the bottom of unit. Cut the
discharge tubing to desired length and secure to washer supply inlet point. A 70° elbow barb fitting is supplied for
connection to washer.
(3) If an injection point is not available or desired, the injection tube can be manually placed in the machine each
load.
(4) Locate the chemical supply signal outputs on the washer for each dispenser you wish to signal. The signal must
be maintained for the duration of dispensing time.
(5) Route the supply signal wiring (usually 115/208/230 VAC) from the washer to the dispenser power input barrier
located on the vertical stainless steel panel. A 24 VAC signal can also be wired directly to the solenoid coil (see
wiring diagram on page 4).
(6) Connect common leg to the terminal marked “common” and the hot leg to the terminal marked with the same
voltage as that coming from the washer. Use approved electrical conduit to route signals to dispenser.
NOTE: Disconnect power before wiring to the dispenser. Always check power with a voltmeter prior to
connecting to dispenser.
0900969 Rev: C (05/07) Page 1 of 8
(7) Connect the water source to the dispenser using a 3/4" male garden hose fitting, or 1/2" FNPT x 1/2" barb brass
fitting to nylobraid tubing, or to hard-plumb use 1/2" FNPT x 1/2" sweat (copper) fitting. A 3/4" hose “Y” can be
used to plumb the dispenser between the water source and the washer (see diagram on page 5).
Important:
with chemical manufacturer for recommended water temperature and optimum pressure.
(8) To maintain consistent injections, water pressure should be regulated at 25-50 PSI. Water temperature and
pressure will determine required dispenser run time.
(9) Connect the vacuum breaker to the unit using the supplied copper tubes. Tighten compression fittings on the
inlet and outlet fittings and check for leaks.
(10) See page 3 for connecting multiple units.
Check all local plumbing codes for backflow prevention and water line connection standards. Check
CONTROLLING FEED TIME
The chemical dosage, or feed time, of the DDS-1000 is controlled directly by the washer’s supply signal. Supply
signals should be programmed (at the washer) for the length of time required to dispense the required amount of
chemical for each operation. Consult the washer manual for programming of the washer’s supply signal outputs.
Page 2 of 8 0900969 Rev: C (05/07)
MULTIPLE UNIT CONNECTION
Connecting multiple DDS-1000 dispensers is quick
and easy with the DDS-1000 Connector Kit (Part
Number 7600672).
(1) Align units on the mounting surface side by side
and as close together as possible. Kit includes a
15 inch length of ½” ID Nylobraid tubing.
(2) Remove ½” plastic plug from brass “T” on bottom
of unit.
(3) Replace plug with ½” NPT x ½” Barb Elbow
fitting. Be sure to use plumbing tape or pipe
sealing compound to prevent leaks.
(4) Repeat above procedure for each unit connected.
(5) Insert plastic plug into ¾” hose adapter on each
unit except the unit closest to the water source.
(6) Connect ½” Nylobraid tubing to Barb Fittings
using stainless steel hose clamps.
(7) Connect “Source” water supply hose to unit
closest to water supply.
(8) Turn on water supply, press detergent / bleach /
softener start buttons and check for leaks.
0900969 Rev: C (05/07) Page 3 of 8
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