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1. INSTALLATION OF THE PUMP
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Plug the power supply connector into the corresponding socket at the rear of
the pump and secure it in place by rotation of the ring.
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Plug the universal switching power supply into an AC mains outlet (90Ú240 V
/ 50Ú60 Hz). After a short beep signal the display will be illuminated. The
last used settings will appear on the display.
Place the syringe into the bed (figure 1).
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Select the direction by pressing the direction button <|> and press the ON/OFF
button to bring the pusher block into such a position that the extremity of
the syringe plunger can be placed into the pusher between the V-piece and the
fixing disc (figure 2). You can use any convenient speed setting to displace
the pusher. The maximal speed of the movement can be obtained by constantly
pressing one of the direction buttons.
By rotating the knob (figure 1A) tighten the upper part of the syringe body
in the fixation.
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Press the ON/OFF button and select the rotation of the pump (button <|>) so
that the V form part of the pusher just touches the syringe plunger.
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Turn the fixing disc to restrict the movement of the plunger extremity (figure
2A).
Secure the body of the syringe using the elastic band (figure 3A).
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Select the direction (button <|>) and press the ON/OFF button to bring the
syringe plunger into the start position and displace any bubbles in the line.
The pump is now ready for use.
By pressing the ON/OFF button the pump is switched on or off. The internal memory will show the last used speed and flow direction setting.
1.1.1 Setting the flow rate
The rate of flow of any liquid through the pumps depends upon the internal diameter of the syringe and the pump speed. The VITFIT pump has been constructed for syringes up to 150 ml. Almost any available type of syringe can be used in the Vitfit pump. With the speed control buttons below the LED display the speed of the motor can be selected. The numbers from 0 to 999 correspond to the velocity of the movement of the motor and plunger. The best way to correlate the flow rate obtained with your syringe is to make a preliminary test in which the pump is allowed to pump the liquid over a certain time with a selected speed setting (for ex. 1 minute with setting 500). Then the weight or volume of the sample is measured. Using this value the speed numbers for desired flow rates can be easily calculated.
1.2 Setting of flow direction
The direction of the pusher movement can be selected by the <|> button. The corresponding LED diode will be on.
1.2.1 Fast pusher movement
Keep the desired direction button pressed constantly for about 2 seconds. The pusher will move in the selected direction with maximal speed. This functions even when the ON/OFF button has not been activated. The maximal filling position of the pusher can be blocked mechanically by a screw in the fixing dice (figure 2B).
1.3 Remote control
1.3.1 ON/OFF control
By interlinking contacts no. 4 and 5 of the socket at the rear of the pump (see figure 4), the pump will be blocked (both direction indicating LEDs will be switched off). The same effect can be obtained by applying a voltage of 3 to 12 V DC to contact no. 5 (0 line must be connected to contact no.3). (In some cases a reversed logic for the remote control is required. Please contact us in this case).
1.3.2 Remote control of the pump speed
This pump can be controlled over the whole range by an external signal (0Ú10 V, option 0ů20 or 4ů20 mA). The plus pole of the signal is connected to contact no.1, 0 line to contact no.3. Press the REMOTE button on the front panel. The corresponding LED diode will come on and the display will indicate the approximate voltage of the external signal. This indication may become unstable when an external connection is not made indicating the high sensitivity of the electronics.
Warning: For safety reasons the voltage of the external signal must not exceed 48 V to earth!
1.4 How to program the pump
Up to 99 pairs of time and flow rate may be programmed in a simple way. Access to the program is opened by simultaneously pressing buttons REMOTE and RUN until an indication PGM appears on display and both directions diodes (<|> button) are illuminated.
(If you repeat this simultaneous pressing, the memory will be cleared and the indication cLE will appear on the display. For programming press both buttons again until PGM appears again).
- Press the ON/OFF button. The indication F01 will shortly appear on the display indicating that you can select the first flow rate value.
- Select the direction of the pusher movement (delivery or filling) using the direction button
- Set the desired flow rate value (0 to 999 representing 0 to 100% speed of rotation) by pressing the buttons below the display. Press the ON/OFF button again. The indication t01 will appear for a few seconds on the display indicating that you can program the time period of the first step in minutes. Select the desired time period for the first programm step.
- Press the ON/OFF button again. The indication F02 will briefly appear on the display. You can now enter the desired flow rate. After this press the ON/OFF button again. The symbol t02 will briefly appear on the display. You can now set the time of the second step.
- In a similar way up to 99 steps can be programmed.
- After having entered the time* of the last step press REMOTE and RUN buttons simultaneously until an indication End appears on the display (both direction diodes will be off).
*(It is not possible to end the programme after programming the flow rate).
Both direction LEDs indicate if you are programming the speed or the time:
One direction LED on: Programming of the flow rate
Both directions LED off: Programming of the time
To start the program press the RUN button.
To end the running program definitively press the RUN button.
It is possible to stop the pump (button ON/OFF), to change the direction and the speed of movement during any running programme step. This facilitates urgent replacement of the tubing or allows reaction in other emergency situations. Do not forget to restore the right direction of flow rate and to switch the pump on after you have finished your intervention. The time basis in the microprocessor is not stopped meanwhile so that the total time of the step and of the program will not be affected by this modification. When the step time is elapsed, the pump will automatically go on to the next step. The program is not therefore modified by this emergency intervention.
After the last step of the program the pump will continue the pumping with the flow rate of the last step until it is switched off. If you wish the pump to stop after the last step, program an additional step with a flow rate of 000 for one minute for example.
You can view the program by proceeding in the same way as during programming but without modification of it.
1.5 Reduction of the force
The mechanism of the Vitfit develops a force of up to 30 kg. This will be appreciated by users who need to operate with high pressure, however it may be excessive when small syringes are used. Therefore the force can be limited to 8 kg by switch at the rear of the pump.
1.6 Use of the valve
The Vifit pump is equipped with two outputs for valves. It supplies a DC signal 12 V / 1 A to command of valves. One output is on another off. This allows a cyclical operation of the pump. For connection scheme see section 5.
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