Idex KNIGHT MT-300 User manual

Page 1 of 40900539 Rev: A (07/00)
07&,5&8,7%2$5'
6,1*/( 3803 9(56,21

,16758&7,210$18$/
INTRODUCTION
The MT-300 is a microprocessor controlled timer which can be programmed to operate at any time during the day or
night. It can be powered by 12 VDC from batteries, or 24 VAC from a step-down transformer, for operation. Options
are available to control one or two pumps. A few examples of typical applications are; grease traps, drains, odor
control, cooling towers, chain lube systems, and water treatment.
The MT-300 can be programmed for up to 20 separate “pump events“. The pump(s) can run for a maximum of 16
minutes on each pump event. Some of the key features of the MT-300 are:
•An on-board battery keeps the current time setting if main power is removed.
•Non-volatile memory saves all programmed event information if main power is removed.
•A security feature is built-in to prevent accidental, or unauthorized programming.
This manual is laid out to cover all operations and features of the MT-300 board. As a result, some information may
not pertain to your particular use of the MT-300. If this manual was included as part of a complete dispensing
system, all wiring connections from the pump(s) to the MT-300 will already be in place.
INSTALLATION
(1) a: If this manual was included as part of a complete dispensing system, mount the unit on a wall using the
supplied mounting bracket (customer must supply hardware to install). Mount the unit in a convenient location
near both injection point and chemical supply. CAUTION: Do not mount the unit in the direct path of steam. This
can short circuit and permanently damage your system.
b: If this manual was not included as part of a complete pumping system, mount the MT-300 into the dispenser
using the 3 mounting holes in the board.
(2) Connect batteries or power wires and all electrical wiring as shown in the attached wiring diagram and per local
electrical codes. Failure to do so will void warranty.
(3) Install poly tubing between the discharge (right) tube side of the peristaltic pump and the injection point. Use tie
wraps to secure flow tubing to squeeze tube. Be sure to draw the tubing through the end of the pickup tube.
(4) To fill the suction and discharge tubing connected to the pump, depress the appropriate PRIME switch and the
pump will run as long as the switch is depressed.
CONVERTING POWER SOURCES
See the wiring diagram in this manual for correct wiring connection when converting from AC to DC power (or vice
versa). Be sure to locate the fuse in the correct position.
OPERATION NOTES
•During normal operation, the clock will display briefly when an event run time starts, or while PRIME buttons are
pressed. This greatly increases battery life for (12 VDC) battery-operated applications.
•During programming, if a button is not pushed within 2 minutes, the display will disappear and the control will
return to normal operation.

0900539 Rev: A (07/00)Page 2 of 4
BUTTON FUNCTIONS
PRGM: Steps you through the setup program.
PRIME 1 ( Ø ): Manually activates pump 1 and shows clock when not programming.
Advances numbers when programming.
PRIME 2 ( × ): Manually activates pump 2 (if applicable) and shows clock when not programming.
Advances numbers when programming.
SET: Not used.
SECURITY FEATURE — REMOVE JUMPER JP1 TO PROGRAM
To prevent unauthorized tampering, the events and time/day setting can be “secured” by placing a jumper on the
JP1 pins on the back of the MT-300 circuit board. The jumper acts like a lock and key...when the MT-300 is secured
(jumper on) the display will show “SECU” if the PRGM button is pressed. The PRIME buttons are not affected and
will still function in their normal manner. Removing the jumper allows the MT-300 to be programmed or to change the
time of day clock. Replace jumper when done programming if you wish to secure the system.
HOW TO SET THE SYSTEM
(1) Press the PRGM button — set the clock to the current time of day. Use × / Ø to set the clock (note AM/PM).
(2) Press PRGM button again — PE 1 will be displayed. PE = Pump Events (“on times“) needed per day. Use
× / Ø
to set the number of pump events per day that are required.
NOTE: The system will activate only the number of pump events indicated by the PE #.
(3) Press PRGM button again — E 1 will be displayed indicating that you are going to program the first event.
(4) Press PRGM button again — pump start time will be displayed. Use × / Ø to set the pump start time (note AM/
PM).
(5) Press PRGM button again — pump run time will be displayed. Use × / Ø to set the pump run time (min:sec).
(6) a: Press PRGM button again — E 2 will be displayed if you selected more than 1 pump events (PE) per day.
Program all pump events the same as the instruction in steps 4 & 5.
b: After all pump events are programmed, pressing the PRGM button will return you to the blank display.
(7) To review your pump programming, press the PRGM button and slowly step through the program. Make
changes as necessary referring to the above instructions.
* NOTE: If you get lost in the program, press the PRGM button until you return to the blank display.
Follow the instructions above.
* TIP: If you hold down any of the programming buttons for 2 seconds the numbers will scroll much faster.
HOW TO EASILY CALCULATE PUMP RUN TIMES
(1) Decide number of ounces (volume) of product required.
(2) Pump 30 seconds of product into a measuring cup and calculate: Ounces/Second = Ounces Measured ÷ 30
seconds.
(3) Time to be programmed for the amount of product: Time (Seconds) = Ounces Required ÷ Ounces/Seconds.
Example:
Volume Required is 10 Ounces.
Let’s say that 6 ounces of product is pumped in 30 seconds. The resulting flow rate would be 0.2 ounces/second
(using the calculation previously mentioned in step 2 which would be 6 ÷ 30 in this example).
Therefore, the pump run time to be programmed will be 50 seconds (using the calculation previously mentioned in
step 3 which would be 10 ÷ 0.2 in this example).

Page 3 of 40900539 Rev: A (07/00)
WIRING DIAGRAM

0900539 Rev: A (07/00)Page 4 of 4
DISCLAIMER
Knight Inc. 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 Inc.
WARRANTY
All Knight controls and pump system
s 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.
World Headquarters:
20531 Crescent Bay Dr.
Lake Forest, CA
92630-8825 USA
TEL: [phone]
FAX: [phone]
Atlanta Branch:
8111 Technology Dr. NE
Covington, GA
30014 USA
TEL: [phone]
FAX: [phone]
Toronto Branch:
2880 Argentia Road, Unit 6
Mississauga, Ontario
L5N 7X8 Canada
TEL: [phone]
FAX: [phone]
London Branch:
#15 Brunel Centre
Newton Road, Crawley
West Sussex UK RH102UB
TEL: [phone]
FAX: [phone]
Sydney Branch:
Unit 28, 317-321
Woodpark Rd., Smithfield
NSW Australia 2164
TEL: [phone]
FAX: [phone]
Amsterdam Branch:
Marssteden 68
7547 TD Enschede
The Netherlands
TEL: [phone]
FAX: [phone]
KNIGHT INC.
A Unit of IDEX Corporation