Knight Equipment OS-200S Installation Manual

ONE SHOT (OS-200 L/LS/S)

INSTRUCTION MANUAL

THEORY OF OPERATION

The One Shot 200 is a dual product advanced microprocessor controlled injection system for dispensing a precise
amount of detergent and bleach into a domestic type top loading washing machine. The dispenser features two of the
KTM-500 timing modules, which includes a unique button programmable pump timer and pump “Lock-Out” time that
is designed to prevent consecutive dispensing where cost containment and control is required. The KTM-500 also
features a delay time function, and a “Relay Mode” which allows for a timed signal from a microprocessor laundry
machine to control the pump operation.

The dispenser is offered in three configurations: OS-200L – two liquid pumps, OS-200LS – one liquid pump and one
solenoid for solid product, OS-200S – two solenoids for two solid products. Other applications include pot and pan
detergent injection or detergent and sanitiz er inje ction into a bar sink.

The OS-200 will activate when the signal input on the circuit board receives a 14-240VAC signal. An optional two
button remote switch box can be installed for a remote manual start. The OS-200 has a built in 120/208/230V
transformer for main power.

INSTALLATION

• Mounting: Locate a spot near the laundry machine and use the provided hardware to mount the unit on the wall no

more than 8 feet from the floor and within 20 feet of the chemical supply. If using a remote switch box, ensure the
cable is long enough to mount the remote to the front of the washing machine.

• Electrical: Connect main power to the 120/208/230V internal transformer. Use approved power cord and conduit

and install leads to appropriate voltage selection on the terminal strip on top of the internal transformer (refer to
wiring diagram). Wire the external signal from the signal source to the 14-240VAC signal input terminal. (refer to
wiring diagram). If using optional remote start switch wire the Orange and Red wires from the switch box to the
“START” terminals on Pump 1’s circuit board and wire the Black and Brown wires from the switch box to the
“START” terminals on Pump 2’s circuit board (refer to wiring diagram).
Note: When installing any electrical equipment insure that all the state and local safety codes are met.

• Plumbing: Liquid product plumbing: Connect 1/4" OD tubing from the output (right) side of the pump to the point of

injection. Connect 1/4" OD tubing from the chemical source to the suction (left) side of the pump.

• For solid chemical applications, an auxiliary feeder, such as the KNIGHT Power Bowl Ultra, is required to dissolve

the product and deliver it to the machine or sink. The solenoid will need to be plumbed into the feeder.

• Solid product plumbing: Connect 1/4” OD tubing between inlet side of solenoid to the water source. Connect 1/4”

OD copper tubing between output side of solenoid to the input of the Power Bowl Ultra.

PRIMING

(1) Locate the dip-switch pack on the circuit board and set switch #6 to RELAY.
(2) Press and hold the Start button until the chemical line is fully primed, then release the button.
(3) Set switch #6 to SIGNAL (unless you intend to use relay mode).

CAUTION: Wear protective clothing and eyewear when dispensing chemicals or other materials.
Observe safety handling instructions (MSDS) of chemical manufacturers.

CAUTION: To avoid severe or fatal shock, always disconnect main power when servicing the unit.

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PROGRAMMING

Pump/Solenoid Run Time:

(1) Locate the dip-switch pack on the circuit board — set switch #6 to SIGNAL, set switch #7 to RUN TIME and set

switch #8 to PROGRAM MODE.

(2) Using a measuring cup or flask, press Start switch and release when pump starts. Let the pump or solenoid run

until desired amount of chemical is dispensed then press Start switch again to stop. The One Shot run time is
now programmed. Repeat step if new volume is required.

(3) Set mode switch #8 to RUN MODE.

Delay Time:

(1) Locate the dip-switch pack on the circuit board — set switch #6 to SIGNAL, set switch #7 to DELAY TIME and

set switch #8 to PROGRAM MODE.

(2) Press Start switch and release when the LED begins flashing. When the desired delay time has passed, press

the Start switch again. The One Shot delay time is now programmed. Repeat step if new delay time is required.

(3) Set mode switch #8 to RUN MODE.

Lock-Out Time:

This feature defeats consecutive dispensing of product for a pre-determined interval. Select a combination of
switches 1 – 5 to program total lock-out time.

Example: For 10 minute lock-out, set switches #2 and #4 to ON with all other switches OFF.
For maximum lock-out (31 min) set all switches ON.
For no lock-out, set all switches OFF.

(max delay time is 12 minutes and 42 seconds)

(max lock-out time is 31 minutes)

(max run time is 12 minutes and 42 seconds)

OPERATION

Manual activation:

will begin counting down the delay time (if used) and will then run the pump/solenoid for the amount of time
programmed. Once the lock-out time expires the pump/solenoid will be ready to restart.

Signal activation:

seconds, the delay time (if used) will begin counting down. Then the pump/solenoid will run for the amount of time
programmed. Once the lock-out time expires the pump or solenoid will be ready to restart.

Relay Mode:

present, or for as long as the manual button is depressed. All other board functions (such as delay time and lock-out
time) are by-passed in relay mode.

Press the Start button on the cover or on the remote switch box for 1 full second. The OS-200

When the signal input on the circuit board receives a 14-240 VAC trigger signal for at least 5 full

Set switch #6 to RELAY. The pump/solenoid will activate for as long as an external trigger signal is

LOCKOUT SIGNAL FEATURE

Systems are shipped from the factory with a pair of wires connecting the L/O SIG terminals of both boards together
(as shown in the wiring diagram). These wires lock out both boards
time active. They also prevent both pumps from activating at the same time if both start buttons are pressed
simultaneously, or if both boards share the same signal (if this situation occurs, only one pump will run).

from operation when either one has a lockout

• Remove the wires from the L/O SIG terminals on both boards if you wish to activate both pumps from the same

signal. It is recommended to program a delay time for the second pump so that only one pump runs at a time.

• If you later decide to re-connect the wires, be sure the polarity is correct as shown in the wiring diagram.

DISABLING THE START BUTTON

There is a jumper marked “JP1” on the circuit board that can be used to prevent manual activation in certain
applications, or to allow manual activation by remote push-button only. This jumper only affects the on-board start
button. A remote start button, or trigger signal, can always be used to activate the pump.

• When the jumper is ON, the on-board start button is functional.

• When the jumper OFF, the on-board start button is disabled.

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