Watson-Marlow 313F - Manual (Page 7)

7
313T
The function of the 313T timer card is to convert 313S/D manually controlled drives into 313T/D drives allowing simple
dosing operations to be performed.
The single/continuous/ repeat slider switch allows the user to select between single shot dosing, continuous manual
pumping, or repeat dosing operations.
This publication should be used in conjunction with the manual provided with the pump.
Installation
Dosing
For the pump to be controlled as a simple dosing pump, the Single/Continuous/Repeat slider switch should be set to
Single or Repeat . When set on continuous, the timing functions are over-ruled and the pump operates as a manual
control variable speed unit, (front panel control).
The pump has a braking feature in the counter clockwise direction when viewed from the front of the pump, but not in the
clockwise direction. The dosing operation will therefore be more accurate when run counter clockwise.
The dosing times are set by means of two manually adjusted potentiometers on the "T" card. The right hand knob
adjusts the run time from zero to 10 seconds and the left hand one adjusts the off time from zero to 10 seconds.
Single dose set-up
•
Set the slider switch to Single .
•
Set the "on time" (dosing) knob on the rear of the pump as required and set pump speed to provide the required dose.
•
Ensure the pump is set to run in the counter clockwise direction.
•
The pump can be operated either from the Start button on the rear of the pump, or by closing a contact briefly across
pins 8 and 9 on the 25 pin socket.
Repeat dose set-up
•
Set the slider switch to Repeat .
•
Set the "on time" (dosing) knob and the "off time" knob on the rear of the pump as required and set pump speed to
provide the required dose.
•
Ensure the pump is set to run in the counter clockwise direction.
•
The pump can be operated either from the Start button on the rear of the pump, or by closing a contact briefly across
pins 8 and 9 on the 25 pin socket.
To stop the dosing operation either:
•
Turn the CW/Standby/CCW to standby
•
Pressthe Start button for longer than the off time,
•
Close the contacts on pins 8 and 9 for longer than the off time.
For monitoring purposes, there is an unbuffered strobe output on pin 10 where 0V is stop and +5V is run in the timing
modes. For use with external instrumentation it must be buffered.