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2.7 Preparation for Storage or Shipping 2.7.1 Isopropanol Flush Disconnect the outlet tubing from the pump. Place the inlet filter in isopropanol. Use a syringe to draw a minimum of 50 ml through the pump. Pump a minimum of 5 ml of isopropanol to exit. Leave the inlet tubing connected to the pump. Place the inlet filter in a small plastic bag and attach it to the tubing with a rubber band. Plug the outlet port with the shipping plug or leave a length of outlet tubing on the pump or c
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3. OPERATION 3.1 Pump Front Panel Controls and Indicators 3.1.1 Control Panel 3.1.1.1 Digital Display The 3-digit display shows the pump flow rate (mL/min), system pressure (psi), or the set upper or lower pressure limit (psi) when operating. Choice of display is selected with the MODE key. 3.1.1.2 Digital Display Pump Keypad When pressed, this button increases the flow rate. ∆ When pressed, this button decreases the flow rate. ∇ Use this button to cycle through the four
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3.1.1.3 Status LEDs ml/min When lit, the digital display shows flow rate in mL/min. PSI When lit, the digital display shows system pressure in psi. HI PR When lit, the display shows the user-set upper pressure limit in psi. LO PR When lit, the display shows the user-set lower pressure limit in psi. RUN Lights to indicate that the pump is running. FAULT Lights when a fault occurs and stops the pump. 3.1.1.2 Power-up Configuration Non-volatile Memory Reset: If t
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Align Refill Switch Mode: The signal that initiates the refill phase can be displayed during power-up by pressing and holding the PRIME and the UP-ARROW buttons when the power is switched on. Release the buttons when the display displays "rFL". When the slotted disk allows the light beam to pass from the emitter to the detector on the slotted optical switch a pulse will be generated which signals the beginning of refill. When this pulse occurs the three horizontal segments displ
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4. THEORY OF OPERATION 4.1 Pump Mechanical Operation 4.1.1 Liquid System Flow Path The flow path of the Binary Solvent Delivery Module starts at the inlet reservoir filter passes through the inlet check valve, then through the pump head, and finally exits through the outlet check valve. 4.1.2 Pump Cycle The pump cycle consists of two phases, the pumping phase, when fluid is metered out of the pump at high pressure, and the refill phase, when fluid is rapidly drawn into the pump. Duri
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4.2 Electronic Control 4.2.1 Microprocessor Control The pump is controlled by hybrid microprocessor circuitry which (1) provides control signals to the motor drive circuitry, (2) interfaces with the keyboard/display, (3) receives signals from the refill flag, and (4) provides external input/output (RS-232) interfacing. Firmware programming is stored in an EPROM. An eccentric cam provides refill in a fraction of the full cam cycle. The remaining revolution of the cam provides piston d
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Motor Stall Detector press the DOWN-ARROW button and the display will display "OFF". To exit this mode and store the current setting in non-volatile memory, press the RUN/STOP button. The Motor Stall Detector uses a timer to determine if the camshaft has stopped turning or if the refill switch is defective. The timer begins timing after the pump accelerates or decelerates to its set point flow rate. If the Motor Stall Detector has been enabled, and the camshaft stops turning or the
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5. MAINTENANCE Cleaning and minor repairs of the Binary pump can be performed as outlined below. NOTE: Lower than normal pressure, pressure variations, or leaks in the pumping system can all indicate possible problems with the piston seal, piston, or check valves. Piston seal replacement could be necessary after 1,000 hours of running time. See Section 5.2.3. 5.1 Filter Replacement 5.1.1 Inlet Filters Inlet filters should be checked periodically to ensure that they are clean and no
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Binary Solvent Delivery Module
Dual Series-III Pumps with Serial PC and Voltage Control
Operator's Manual
90-2581 rev B
Scientific Systems, Inc. 349 N. Science Park Road State College, P
16803
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1. INTRODUCTION This operator's manual contains information needed to install, operate, and perform minor maintenance on the Binary Solvent Delivery Module. The figures below are for reference of items described in the manual. Power “T” With Switch Outlet Left Right Drawer Drawer Control Keypads Prime Purge Outlet Valves Filters Cooling Power Fan Entry RS-232 Auxiliary I/O Serial Ports Voltage Control, etc. 1-1
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1.1 Description of the Binary Solvent Delivery Module The system consists of two Series III high performance metering pumps, in a compact package with pulse dampener and an off-line pressure transducer. The pumps use a drawer system for easy access to internal components for troubleshooting & service. These features allow for: Fast & easy setup: Two inlet connection (from solvent reservoirs) One outlet connection (to injector) All connections accessible from front panel
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Flow adjustment in 0.01 ml increments, from 0.01 to 10.00 ml/min with a precision of 0.2% RSD (10mL/min heads) • Microprocessor advanced control • Digital stepper motor design to prevent flow rate drift over time and temperature • Back panel RS232 serial communications port for complete control and status monitoring • Remote analog inputs (e.g. voltage) to control flow rate 1.1.2 Wetted Pump Materials Pump heads, check valve bodies, and tubing are made out Stainless Steel or PEE
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1.1.4 Self-Flush and Seal Life It is recommended that the Self Flush feature be used to improve seal life in a number of applications. In particular, (as stated above) if pumping Buffers, Acids/Bases or any inorganic solution near saturation, the pump should utilize the Self Flush feature. With every piston stroke, an extremely thin film of solution is pulled back past the seal. If this zone is dry (without use of Self Flush), then crystals will form with continuous operation, which
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1.2 Specifications for the Binary Solvent Delivery Modules Flow Rates ............0.000 to 5.000 mL/min for 5mL/min heads 0.00 to 10.00 mL/min for 10mL/min heads Pressure ................0 to 6,000 p.s.i. for SS pump heads, 0 to 5,000 p.s.i. for PEEK™ heads, Pressure Accuracy… . ± 1% of full-scale pressure Pressure Zero Offset. . ± 2 p.s.i. Flow Accuracy ........ ± 2% for a flow rate of 0.20 mL/min and above. Flow Precision .......0.2% RSD Dimensions ............9" high x 10.5"
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2. INSTALLATION 2.1 Unpacking and Inspection Prior to opening the shipping container, inspect it for damage or evidence of mishandling. If it has been damaged or mishandled, notify the carrier before opening the container. Once the container is opened, inspect the contents for damage. Any damage should be reported to the carrier immediately. Save the shipping container. Check the contents against the packing list. 2.2 Location/Environment The preferred environment for the Binary Solve
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SELF-FLUSH PUMP Connect wash solution inlet and Connect pump inlet tubing as outlet tubing shown. (opaque) to the flush housing as Make sure ferrule is in the shown. correct Make sure ferrule is in the correct position. position. Screw syringe on luer fitting. Insert wash outlet tubing end Ensure inlet line filter is into clear adapter. submersed into solvent. Attach syringe to Prime-Purge valve. Open Prime-Purge valve by turning kn
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2.4 Electrical Connection The system utilizes Universal Switching Power Supply, and will accept voltages from 90 – 260 VAC, 50-60 Hz. WARNING: Do not bypass the safety ground connection as a serious shock hazard could result. 2.5 Solvent Preparation Proper solvent preparation will prevent a great number of pumping problems. The most common problem is bubble formation, which may affect the flow rate consistency. Aside from leaky fittings, the problem of bubble formation ari
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2.5.2 Cavitation Cavitation occurs when inlet conditions restrict the flow of solvent and vapor bubbles are formed during the inlet stroke. The key to preventing cavitation is to reduce inlet restrictions. The most common causes of inlet restrictions are crimped inlet lines and plugged inlet filters. Inlet lines with tubing longer than 48" (120 cm) or with tubing of less than 0.085" (2 mm) ID may also cause cavitation. Placing the solvent reservoirs below the pump level also promotes
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2.6.2 Self-Flush Solution Self-flush heads require 250-500 mL of flushing solution. See section 1.1.4 for self-flush solution recommendations. A pH indicator that will indicate the concentration of salts in the solution is recommended as a reminder to change the solution. This flush solution should be replaced with a fresh solution weekly to avoid frequent pump maintenance. 2.6.3 Inlet Tubing and Filters The table below shows the inlet tubing and filter used in the Binary Solvent De
