Idex KNIGHT DAIRY-CHEM User manual

0901159 Rev: B (03/05) Page 1 of 8
INTRODUCTION
Dairy Chem Systems are designed to dispense non-foaming dairy cow teat dip products from a chemical storage
vessel to a teat dip spray head or fill valve. VS versions use an external vacuum switch on the pipeline to control
dispensing only when milking lines are in use. Systems with dual-pump configuration can be setup to operate in the
following ways:
• Run both pumps simultaneously to inject two different chemicals.
• Run one pump at a time, but alternate between pumps at various intervals (using the selector valve on units so
equipped) to extend the life of both pumps.
• Run one pump at a time, but only switch pumps when needed (using the selector valve on units so equipped) to
keep one as a spare.
SPECIFICATIONS
SAFETY PRECAUTIONS
• Read and understand the MSDS sheets for the chemicals that will be used — consult your chemical supplier if you
have any questions.
• Always wear safety goggles and protective gloves while handling chemicals.
• Avoid contact of chemicals with skin and eyes. If contact occurs, rinse affected area with water for 15 minutes, and
seek medical attention, if needed.
MAINTENANCE
• Periodically drain the bowl on the air regulator/filter by pushing up the stem on the bottom of the bowl till the water
runs out.
• The bowl can be removed (by turning counter-clockwise) to clean the filter element. When replacing the bowl, be
sure that the O-ring is properly positioned on top of the bowl.
INSTRUCTION MANUAL
Chemical Compatibility Santoprene: acids, alkalines, soaps, alcohols, ketones.
Air Operated Pump Materials Polypropylene Body w/ Santoprene Seals and
Diaphragm.
Air Requirements / Consumption Minimum 40 PSI / Maximum 80 PSI clean dry air
5-10 SCFM during operation.

Page 2 of 8 0901159 Rev: B (03/05)
INSTALLATION — SINGLE PUMP
(1) Select the desired location to mount the control box — should not be more than 6 ft (2 meters) from the floor.
(2) Mount the control box using the hardware provided or other mounting hardware as needed.
(3) Route the Polyethylene suction and discharge the tubing through the openings in the bottom of the case to quick
connect type suction and discharge ports on the air pump. Limit the length of suction line to a maximum of eight
feet. Use the high density 3/8” O.D. Polyethylene tubing.
(4) Route the discharge line to supply pipe or disperse valve accordingly.
(5) Connect the air supply to the 1/4” NPT inlet valve on the right side of the unit. Be sure to use clean dry air only!
The remaining steps are for vacuum switch equipped units only
(6) Mount the vacuum switch enclosure in a convenient location and nearby to a 115 VAC outlet.
(7) Connect tubing from the vacuum source (pipeline) to the barb fitting on the vacuum switch enclosure. Route the
tubing carefully to avoid pinching the tube at any point.
(8) Wire the vacuum switch enclosure to the pump unit as shown in the wiring diagram below. Be sure to route the
wire through the provided strain relief fittings on both the switch enclosure and pump unit.
(9) Plug the transformer into the outlet.
OPERATION — SINGLE PUMP
(1) Turn the air inlet valve on (counter-clockwise till handle is vertical) to operate the pump.
(2) This step is for vacuum switch equipped units only: The pump will run whenever there is vacuum present, or
when the over-ride switch (toggle switch) is turned on. The tee-handle valve on the vacuum switch enclosure
should be in the vertical position for normal operation, but can be used to by-pass the vacuum switch by turning
to the horizontal position. This allows the unit to be controlled by the over-ride switch only.
(3) The air pump will typically be easier to prime when running at a slower speed. The speed and volume delivery of
the pump can be controlled by turning the regulator clockwise to increase pressure and counter-clockwise to
decrease pressure.
(4) Once the pump is primed, adjust the air pressure as needed to achieve the desired feed rate.
(5) To stop the pump, turn the air inlet valve off (clockwise till handle is horizontal).

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SINGLE PUMP 7659101

Page 4 of 8 0901159 Rev: B (03/05)
INSTALLATION — DUAL PUMP
(1) Select the desired location to mount the control box — should not be more than 6 ft (2 meters) from the floor.
(2) Mount the control box using the hardware provided or other mounting hardware as needed.
(3) Route the Polyethylene suction and discharge the tubing through the openings in the bottom of the case to quick
connect type suction and discharge ports on the air pump. Limit the length of suction line to a maximum of eight
feet. Use the high density 3/8” O.D. Polyethylene tubing.
(4) Route the discharge line to supply pipe or disperse valve accordingly.
(5) Connect the air supply to the 1/4” NPT inlet valve on the right side of the unit. Be sure to use clean dry air only!
The remaining steps are for vacuum switch equipped units only
(6) Mount the vacuum switch enclosure in a convenient location and nearby to a 115 VAC outlet.
(7) Connect tubing from the vacuum source (pipeline) to the barb fitting on the vacuum switch enclosure. Route the
tubing carefully to avoid pinching the tube at any point.
(8) Wire the vacuum switch enclosure to the pump unit as shown in the wiring diagram below. Be sure to route the
wire through the provided strain relief fittings on both the switch enclosure and pump unit.
(9) Plug the transformer into the outlet.
OPERATION — DUAL PUMP
(1) Turn the air inlet valve on (counter-clockwise till handle is vertical) to operate the pump — for units with a
selector valve, choose which pump will be used.
(2) This step is for vacuum switch equipped units only: The pump will run whenever there is vacuum present, or
when the over-ride switch (toggle switch) is turned on. The tee-handle valve on the vacuum switch enclosure
should be in the vertical position for normal operation, but can be used to by-pass the vacuum switch by turning
to the horizontal position. This allows the unit to be controlled by the over-ride switch only.
(3) The air pump will typically be easier to prime when running at a slower speed. The speed and volume delivery of
the pump can be controlled by turning the regulator clockwise to increase pressure and counter-clockwise to
decrease pressure.
(4) Once the pump is primed, adjust the air pressure as needed to achieve the desired feed rate.

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DUAL PUMP WITH SELECTOR VALVE 7659601

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DUAL PUMP WITH SELECTOR VALVE 7659601

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DUAL PUMP WITH SELECTOR VALVE 7659601

Page 8 of 8 0901159 Rev: B (03/05)
DISCLAIMER
Knight LLC does not accept responsibility for the mishandling, misuse, or non-performance of the described items
when used for purposes other than those specified in the instructions. For hazardous materials information consult
label, MSDS, or Knight LLC. Knight products are not for use in potentially explosive environments. Any use of our
equipment in such an environment is at the risk of the user, Knight does not accept any liability in such
circumstances.
WARRANTY
All Knight controls and pump systems are warranted against defects in material and workmanship for a period of
ONE year. All electronic control boards have a TWO year warranty. Warranty applies only to the replacement or
repair of such parts when returned to factory with a Knight Return Authorization (KRA) number, freight prepaid, and
found to be defective upon factory authorized inspection. Bearings and pump seals or rubber and synthetic rubber
parts such as “O” rings, diaphragms, squeeze tubing, and gaskets are considered expendable and are not covered
under warranty. Warranty does not cover liability resulting from performance of this equipment nor the labor to
replace this equipment. Product abuse or misuse voids warranty.
TROUBLESHOOTING
PROBLEM SOLUTION
(1) Unit will not operate. Check for proper air pressure (40 PSI or more into
unit). 40 PSI on Air Gauge.
Check Air Regulator Filter for obstruction such as
water, oil, or debris.
Check for plugged strainer and replace Air
Regulator Filter Assembly, if necessary.
(2) Air passes through the pump without cycling. Repair or replace the pump.
(3) Pump cycles but no liquid is discharged. Check to see if pump is primed.
Suction line leak or obstruction.
Pump fittings loose or broken.
Suction line not submerged down into liquid.
If all of the above check out okay. Repair or replace the pump.
No vacuum, or leak in line (on units equipped with
vacuum switch).
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World Headquarters: 20531 Crescent Bay Drive, Lake Forest, CA 92630-8825 (USA) TEL: [phone], FAX: [phone], www.knightequip.com
KNIGHT LLC, A Unit of IDEX Corporation