Automatic Flow Control for Chemical Feed Pumps Installation, Operation & Maintenance Manual BULLETIN No. IOM-MPCV-0206 Rv. J Manufacturers of Quality Pumps, Controls and Systems Engineered Pump Operations 2883 Brighton-Henrietta Townline Road Rochester, New York 14623 Telephone: (585) 292-8000 Fax: (585) 424-5619 http://www.pulsa.com pulsa@idexcorp.
MPC VECTOR™ FACTORY SERVICE POLICY Your MPC VECTOR is a state of the art microprocessor based motor speed control for use with Pulsafeeder Eclipse Non-Metallic Gear Pumps. It includes extensive on-board diagnostics. If you are experiencing a problem with your MPC VECTOR, first review the on-screen information, then consult the troubleshooting guide.
Table of Contents 1. INTRODUCTION ..................................................................................................................................... 1 1.1 Description .............................................................................................................................. 1 1.2 MPC VECTOR Standard Features ......................................................................................... 2 2. SAFETY CONSIDERATIONS ...............................................
8.2.1 “WET” Analog Input Calibration (with a field signal) ...................................................... 24 8.2.2 “DRY” Analog Input Calibration (keypad only, no signal present)................................ 26 8.3 Analog Output Calibration ..................................................................................................... 28 8.4 PulsaGuard Pump Protection ................................................................................................ 30 8.4.
Conventions For the remainder of this bulletin, the following Conventions are in effect. A WARNING DEFINES A CONDITION THAT COULD CAUSE DAMAGE TO BOTH THE EQUIPMENT AND THE PERSONNEL OPERATING IT. PAY CLOSE ATTENTION TO ANY WARNING. Notes are general information meant to make operating the equipment easier.
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1. Introduction The MPC VECTOR is a microprocessor based motor speed control device, for use with Pulsafeeder pumps. It has been designed for simplicity, yet still has many advanced features that allow the MPC VECTOR to operate in a wide variety of environments and applications. This product is not just a variable speed drive. It is a state of the art multifunctional controller, which provides functionally no one stand-alone variable speed drive does.
The motor used with the MPC VECTOR is a three-phase motor; however the three-phase power is generated internally by the MPC VECTOR itself. Do not be confused by the motor nameplate. Input power to the MPC VECTOR is single-phase or three-phase AC 230 volts (see Section 12, Specifications for acceptable voltage range). The nameplate on the side of your MPC VECTOR controller will list the appropriate supply requirements for your controller.
2. Safety Considerations • Read and understand all related instructions and documentation before attempting to install or maintain this equipment • Observe all special instructions, notes, and cautions. • Act with care and exercise good common sense and judgment during all installation, adjustment, and maintenance procedures.
3. Equipment Inspection When you receive your order, check all equipment for: • Completeness against the shipping document / purchase order • For any evidence of shipping damage. Shortages or damage should be reported immediately to the carrier and your Pulsafeeder Representative. 4. Storage Instructions The MPC VECTOR can be successfully stored for extended periods. The key to this success is temperature and humidity control. 4.
5. Installation and Wiring 5.1 Location Review the Safety section (Section 2) prior to installing the MPC VECTOR. It contains information required to properly install and operate the MPC VECTOR in an industrial environment. The site selected for the installation of your MPC VECTOR is largely dependent on that of the gear pump. Review the Installation, Operation, and Maintenance manual provided with your gear pump. It details system related issues that are important to proper operation of the pump.
5.2 Installation Notes The MPC VECTOR is a microprocessor-based controller that uses electro-static sensitive CMOS components. Do not make any (high or low voltage) electrical connections without adequately grounding the MPC VECTOR and the worker to eliminate an electro-static charge between the two. A conductive wrist strap worn by the worker and attached to the MPC VECTOR’s internal ground plate is adequate to satisfy this requirement.
Figure 2 – Controller Layout and Dimensions 7
5.3.2 Power Wiring Information • Verify the correct supply voltage (230VAC single-phase or three-phase) with the nameplate affixed to your MPC VECTOR. Ensure that your supply voltage matches the MPC VECTOR configuration. • The 1 hp, 2 hp, and 3 hp AC drives use single phase or three phase 230VAC input. The 5 hp AC drive must be powered by three phase 230VAC input only. • Wires should be routed within the enclosure in a manner that maintains separation between high voltage and low voltage conductors.
secure the conductor, making certain that the terminal grips the wire, not the insulation. all wiring meets applicable local and national codes and requirements. Ensure that 5.3.
5.3.4 Input/Output Signal Wiring Signal wiring is routed through the two unused conduit openings at the base of the MPC VECTOR. All input/output signals are connected to the terminal strips at the edge of the MPC VECTOR circuit board except for flow meter feedback which is connected to a separate terminal block. Use caution to observe proper wire location and signal polarity. Always cap or plug unused openings.
Digital output signals can drive devices such as relays or indicator lamps. 5 to 24 VDC power must be supplied from an external source. Each output has a maximum current capability of 500 mA. Maximum voltage capability of these circuits is 40 VDC (see Section 12, Specifications, for more information). Figure 4b – Sample Digital Output Connections, (power can be in the range of 5 – 24 VDC) 5.4 Check Wiring and Close Access Cover Double-check all of your electrical connections.
6. Start Up and Operation 6.1 Overview Once all electrical connections have been made, your MPC VECTOR is ready for setup and operation. The following sections detail the procedures required to complete the MPC VECTOR start up. WHEN POWER IS SUPPLIED TO THE UNIT, LINE VOLTAGE IS PRESENT WITHIN THE MPC VECTOR ENCLOSURE EVEN WHEN THE MOTOR IS OFF. DURING START-UP, IT IS NECESSARY TO RUN THE PUMP MOTOR. THIS WILL CAUSE FLUID TO DISCHARGE FROM THE PUMP.
6.3 Keypad/Lamp Operation Key Function Motor On/Off Press to start pump, press again to stop pump Auto/Manual Press to toggle between automatic operation and manual control of the pump Menu Press to adjust controller settings, to exit the menu system, to move cursor back when entering values, or to step back to higher level menus Enter Press to accept changes in menus, to move cursor forwards when entering values, and to access lower level menus.
The revision numbers should be identical for both units. Unpredictable or unstable operation may result from mismatched software revisions. Please note that it may be necessary to adjust the display contrast. Please refer to Section 8.6 if this is required. 6.5 Motor Parameter Setup The MPC VECTOR controller interfaces closely with the Eclipse pump motor. The MPC VECTOR needs to know certain details about the motor in order to function properly.
Setting Max Flow 1) Begin at the main screen displaying the current flow/speed setpoint SETPT FLOW 0.00GPM 0.00GPM 2) Press the MENU key to access the menus. -MENUCALIBRATION 3) Press the UP or DOWN arrow keys until you get to System Setup. -MENUSYSTEM SETUP 4) Press the ENTER key to access System Setup Menus. SYSTEM SETUP STATUS 5) Press the UP key until you see the Information setup option. SYSTEM SETUP INFORMATION 6) Press the ENTER key to access the Information screens. PULSAFEEDER, INC FW : 1.
6.7 Flow Display The MPC VECTOR will display calibrated pump flow in GPH, LPH, GPM, or LPM on the digital display when configured for flow control. The motor speed (in RPM) may also be viewed while in flow control. Changes to the flow units are made in the System Setup Menu. 6.8 Wrapping up Your MPC VECTOR is now commissioned for use. Note that you cannot configure the software in a way that would damage the MPC VECTOR. Typically, whenever you are about to set a critical value (e.g.
6.9 Factory Re-Initialization Factory Re-initialization is typically not required. When re-initializing your MPC VECTOR, all of the system settings and calibration information will be overwritten by the original factory default settings. The controller must be re-configured and re-calibrated to your specifications. A Factory Re-initialization should be performed only if there is reason to believe that the MPC VECTOR is operating abnormally.
7. Input/Output Setup Use the “DIGITAL I/O” and “ANALOG I/O” menus to activate the functions required for the intended application. Users may also reference Section 14 – Menu Maps for additional configuration assistance 7.1 Analog Input Setup Two Analog Inputs are provided for the User. Analog Input 1 is used for Setpoint input. Analog Input 2 is used for systems configured for analog process feedback from a flow meter. 7.1.
7.3 Analog Output Setup No setup is required for the analog output. Analog output is always available at the corresponding terminals (see wiring diagram Figure 4a, Section 5.3.4). The analog output follows and is proportional to motor speed. 7.4 Digital Output Setup Each of the 3 Digital OUTPUTS can be selected as: ON/OFF Status AUTO/MAN Status Leak Detected Alarm Indicator Tank Level Status Each can be set as normally OPEN or normally CLOSED.
8. Calibrations As a convention in this manual: “WET” calibrations will refer to those that require normal operating conditions, for example the pump running with fluid, or an electrical signal input provided at the appropriate terminals. “DRY” calibration routines are run under other conditions, and often do not require the pump to run or that a specific input signal be present. Some of the calibration routines may be performed either way. Note any system requirements listed for each routine. 8.
5. Using the UP and/or DOWN arrow keys adjust the motor speed to approximate setpoint. This speed is just a reference point for the MPC MPC VECTOR to measure flow meter input. If the maximum motor speed for a given application is known, it is best to use this as a flow calibration point. CAL SPEED RPM 1800 6. Press the ENTER key to accept the calibration speed. START MOTOR YES=ENTR NO=MENU 7. Press the ENTER key to start the motor and advance to the flow entry screen.
8.1.2 DRY Flow Calibration The DRY Flow Calibration routine does not require the pump to run. Instead, the user may input known flow meter feedback values. This process can be used for fine adjustment of flow rate display, or in situations where it is not possible or not safe to run the pump during calibration. The DRY Flow Calibration Routine may be used to make small adjustments to the MPC VECTOR calibration to ensure to make the MPC VECTOR display more closely matches the Flow Meter display.
9. Press the UP and/or DOWN arrow keys to adjust the Max Current setpoint. MAX SETPT 20.0MA FLOW: 4.00GPM 10. Press ENTER to accept the Current Setpoint. The cursor will blink on the bottom line indicating that the Flow setpoint may be adjusted. 11. Press the UP and/or DOWN arrow keys to adjust the Max Flow setpoint. Note that you can not set this value greater than the Maximum Flow the pump is rated for (you may see the maximum rated flow in the Pump Information screens). MAX SETPT 20.0MA FLOW: 5.
8.2 Analog Input Calibration If you are not using the 4-20mA input to the MPC VECTOR for control, skip this section. To calibrate the Input Current you must first correctly wire an external signal source. Refer to Section 5 – Installation: Low Voltage Input Connections, Analog Input. As with the flow calibration routine, the Analog Input may be calibrated WET or DRY.
10. Press the ENTER key once more to accept the calibration value APPLY MAX MA ENTER TO START 11. Apply your desired maximum mA control signal to the MPC VECTOR (usually 20 mA) 12. Press the ENTER key MAX SETPT 20.2MA FLOW 7.01GPM (The mA value will be equal to your input signal level) (The lower line shows the setting the MPC VECTOR will use for this signal value) 13. Press the UP and DOWN arrows to adjust the Speed/Flow corresponding to the Analog Input value. 14.
8.2.2 “DRY” Analog Input Calibration (keypad only, no signal present) 1. The starting display will be: SETPT FLOW XX.XXX XX.XXX 2. Press the MENU key -MENUCALIBRATION 3. Press the ENTER key CALIBRATION PUMP FLOW 4. Press the UP arrow key twice, to access the analog input calibration CALIBRATION ANALOG INPUT 5. Press the ENTER key ANALOG INPUT WET CAL 6. Press the UP or DOWN key ANALOG INPUT DRY CAL 7. Press the ENTER key to access the DRY Pump Flow Calibration routine for ANALOG Flow Meters.
11. Press the UP and/or DOWN arrow keys to adjust the Max Current setpoint. MAX SETPT 20.0MA FLOW: 4.00GPM 12. Press ENTER to accept the Current Setpoint. The cursor will blink on the bottom line indicating that the Flow setpoint may be adjusted. 13. Press the UP and/or DOWN arrow keys to adjust the Max Flow setpoint. MAX SETPT 20.0MA FLOW: 5.92GPM You may back out of the DRY calibration routine at any point up to now without saving any calibration settings by pressing the MENU key several times. 1.
8.3 Analog Output Calibration The analog output calibration routine maps the motor speed of the MPC VECTOR to a 4-20mA output signal. The output signal is NOT proportional to pump flow. If a 4-20mA signal representing flow is required it must be obtained by splitting the flow meter output signal. 1. The starting display will be: SETPT FLOW XX.XXX XX.XXX 2. Press the MENU key -MENUCALIBRATION 3. Press the ENTER key CALIBRATION PUMP FLOW 4.
9. Press the ENTER key once more to accept the calibration value ANALOG OUTPUT CALIBRATED 10. Analog output signal calibration is complete 11. Press the MENU key three times to exit back to the main operating screen If you receive the following message: CURRENT DELTA OUT OF RANGE This indicates that the output current for 0% speed has been set greater than or equal to the output current setting for 100% speed.
8.4 PulsaGuard Pump Protection PulsaGuard is designed to turn your pump off when running in dangerous conditions. These conditions are user configurable and can be easily modified to meet each application. When flow meter feedback is being provided, PulsaGuard will turn off your motor if a low flow set point is crossed for more than 10 seconds. This will protect the pump in under-loaded or overloaded conditions, which would cause the flow to fall below the user’s acceptable limit.
7. Press the ENTER key to complete the PulsaGuard Calibration. PULSAGUARD CALIBRATED 8.4.2 PulsaGuard Calibrations, no Flow Meter Feedback PulsaGuard may be calibrated WET or DRY. A WET calibration requires that the user simulate underloaded conditions. Follow Steps 1-4 above. You should see the following screen CALIBRATION PULSAGUARD 5. Press the ENTER key. PULSAGUARD WET CAL WET CALIBRATION: 6. Press the ENTER key again to access the WET calibration routine. START MOTOR YES=ENTR NO=MENU 7.
7. Press the ENTER key MIN SETPOINT SETPT: 0.0A 8. Use the UP and DOWN keys to adjust the current setpoint MIN SETPOINT SETPT: 2.0A 9. Press the ENTER key to accept the calibration value. PULSAGUARD CALIBRATED 10. PulsaGuard Pump Protection is now calibrated and enabled. 8.5 Display Contrast Adjustment Should adjustment of the contrast level of the display become necessary, use the following procedure while in the normal operating mode. To increase contrast, press and hold at the same time.
8.6 Tuning the Control Algorithm This option should only be used by control systems engineers who are familiar with tuning PID loops. This is not intended for the casual user. Changing these values may result in the system oscillating without settling on the set point or never reaching the set point at all. See Section 21, Appendix 2 for more information and theory on PID control. The MPC VECTOR allows users to tune the motor control algorithm to speed up or slow down the MPC VECTOR response time.
8. Press the UP and/or DOWN keys to adjust the denominator, kp' PROPORTIONAL X.100 9. Press the ENTER key INTEGRAL X.XXX 10. Press the UP and/or DOWN keys to adjust the denominator, ki' INTEGRAL X.050 11. Press the ENTER key DERIVATIVE X.XXX 12. Press the UP and/or DOWN keys to adjust the denominator, kd' DERIVATIVE X.050 13. You may back out without saving the new PID coefficients at this point by hitting the MENU key several times to return to the first screen.
Modifying the Sampling Interval, when Flow Meter feedback is used 1. The starting display will be: SETPT FLOW XX.XXX XX.XXX 2. Press the MENU key -MENUCALIBRATION 3. Press the UP arrow key -MENUSYSTEM SETUP 4. Press the ENTER key SYSTEM SETUP STATUS 5. Press the DOWN key until you get to the PID screen SYSTEM SETUP PID PARAMETERS 6. Press the ENTER key PID PARAMETERS COEFFICIENTS 7. Press the UP arrow key PID PARAMETERS SAMPLING PERIOD 8. Press the ENTER key SAMPLING PERIOD PERIOD: XXXMS 9.
9. Flow Meter Input The MPC VECTOR accepts flow meter process feedback from an analog (4-20mA) flow metering device. The manufacturer of the flow meter is not important but the process signal must conform to a set of minimum specifications in order to work with the MPC VECTOR. 9.1 Flow Meter Installation Prior to installation make sure your flow meter conforms to the MPC VECTOR’s flow meter specifications (refer to Section 13, Specifications).
6. Press the ENTER key SYSTEM SETUP STATUS 7. Press the DOWN key five (5) times SYSTEM SETUP FLOW SENSOR 8. Press the ENTER key to enter the Flow Sensor setup menus. FLOW SENSOR SENSOR TYPE 9. Press the ENTER key to see the current sensor configuration. SENSOR TYPE INACTIVE 10. Press the ENTER key to change the sensor type. SENSOR TYPE 11. Press the UP arrow key until the analog flow meter option is displayed. SENSOR TYPE 12. Press the ENTER key to accept the new configuration.
10. Motor Parameter Setup and Tuning The MPC VECTOR controller must know several motor characteristics before the motor can be calibrated. This calibration allows the controller to maintain precise control over the operation of the motor. If the drive has not been calibrated an error will appear on the screen. In addition, at startup the User Interface will be redirected to the Calibration/Motor Parameter sub-menu.
Param. Name Description Range Typical 85 Motor Rated Speed Nameplate RPM Rating 300 – 65,000 RPM 1800 RPM 86 Motor Rated Amps Nameplate FLA Rating 0.0 – 480 Amps Various 87 Motor Rated Volts Nameplate Voltage Rating 0 – 600 Volts 230 VAC 88 Motor Base Frequency Nameplate Frequency 25 – 500 Hz 50 or 60 Hz 91 Motor Cosine Phi Nameplate Cosine Phi 0.4 – 0.99 Approx 0.8 81 Note 1 2 Invoking this parameter begins the auto-calibration routine NOTES: 1. FLA = Full Load Amps 2.
Setup Process 1. Navigate to the CALIBRATION menu, and scroll to the MOTOR PARAM option. The starting display will be: CALIBRATION MOTOR PARAM 2. Press the ENTER key 85 <1800> 3. Use UP and DOWN arrows to adjust value as required, then press the ENTER key 86 <1.2> 4. Use UP and DOWN arrows to adjust value as required, then press the ENTER key 87 <230> 5. Use UP and DOWN arrows to adjust value as required, then press the ENTER key 88 <60> 6.
11. Alarm and Error Messages If a fatal error has occurred while in Operational Mode, the error will flash on the screen and the Red LED lamp will also flash. The menus can still be accessed by pressing the menu key. This allows the user to try and fix the source of the error if possible. 11.1 Error Log As each error occurs an entry is saved in an Error Log. You may view the four most recent errors as well as the current status through the System Setup Menus. 11.1.1 Viewing the Error Log 1.
11.1.2 Clearing Error Log Entries Any of the entries in the Error Log may be cleared while viewing by pressing the ENTER key. If the problem is recurring or still present it may not be clearable. 11.2 Error Messages The following table gives an example of these messages and when you can expect them to be displayed. Message Displayed When: FATAL ERRORS: The pump and controller will not run while one of these error conditions exists. The Red LED will blink and the error message will flash on the screen.
NON-FATAL ERRORS: The pump and controller can still be run while these conditions exist. The Red LED will flash and the error will flash on the screen. The Red LED and error message will cease once the error condition has been corrected.
12. Specifications Operation mode: AC motor speed control with sensorless speed feedback Flow control with Flow Meter feedback Recommended Minimum Wiring and Circuit Breaker Power Requirements Single Phase 208/230 VAC Three Phase 208/230 VAC Actual Draw Circuit Breaker Wire Size Wire Size Actual Draw Circuit Breaker Wire Size Wire Size MPC VECTOR and 1.0 Hp motor 10.6 A 15 A 14 AWG 2.0 mm2 5.8 A 10 A 14 AWG 2.0 mm2 MPC VECTOR and 2.0 Hp motor 14.8 A 20 A 14 AWG 2.0 mm2 9.
Control Outputs Analog Out #1 Wiring J23 pins 5-6 Digital Out #1 Digital Out #2 Digital Out #3 J23 pins 1-4 J23 pins 2-4 J23 pins 3-4 Specification / Description 4-20mA output for pump flow indication Max voltage out 12 Volts; Max current out 30mA; Max load resistance 300 Ohm Internally protected with resetable fuse Transistor-based output, various functions * Transistor-based output, various functions * Transistor-based output, various functions * All digital outputs maximum 40 VDC, maximum 500 mA NOTE
Motor Selection and Requirements General Specifications All motors used with the MPC VECTOR controller must meet these minimum specifications: • 230 VAC, 50 or 60 Hz 3-phase input power AC induction motor • 1800 rpm (60 Hz) or 1500 rpm (50 Hz) synchronous speed • Service Factor 1.
13. Model Identification Position Sample 1 and 2 EP 3 C 4 B Specifies Options EP – MPC VECTOR Enclosure Type C – meets NEMA 4X specifications Motor Hp Rating * A - Fractional to 1.0 Hp (.37 kW); Drive Input: 208-230 Volt B - 2 Hp (1.5 kW); Drive Input: 208-230 Volt C - 3 Hp (2.2 kW); Drive Input: 208-230 Volt D - 5 Hp (3.
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15. Factory Default Values Parameter Digital Input #1 Digital Input #2 Factory Set Value INACTIVE, normally closed INACTIVE, normally closed Analog Input #1 INACTIVE Analog Input #2 INACTIVE Digital Output #1 Digital Output #2 Digital Output #3 ON/OFF indication, normally closed AUTO/MANUAL Indication, normally closed ALARM Indication, normally closed Security Code Default = 0000 Language ENGLISH MODE Local (Manual) UNITS GPM (gallons per minute) 16.
18. Troubleshooting Guide Problem Potential Cause Solution No Display Back-lighting No power supplied. Supply power wired incorrectly. Supply power outside of specification. Check power source. plug & circuit breaker Check wiring. Check voltage/frequency against specification. No Text on Display Contrast out of adjustment. Software did not initiate properly. Adjust as per section 8.4 Remove and re-apply AC power No power Indicators No power supplied. Supply power wired incorrectly.
19. Spare Parts User replaceable parts for the MPC VECTOR.
20. Appendix 1, Handheld Wiring The hand-held controller for your MPC can be placed as far as 1000 feet from the main control unit. It is recommended that all calibrations be completed before the cable is lengthened, as these tasks are easier when the pump and hand-held controller are close to each other.
20.2 Removal and Connection of the Cable from the Base Unit: Wait a minimum of 5 minutes after disconnecting power before servicing the MPC or pump motor. Capacitors retain a charge even after power is removed from the controller. 1. Remove the screws that are securing the cover of the main unit. 2. CAUTION: The cover is wired and should be opened gently being sure not to pull any of the wires that are connected to it. 3. Make a note of what color lead is in each position of the terminal block “J14”.
REMOTE AC DRIVE MIS-WIRING OF J5 MAY DAMAGE UNIT.
Figure 8 – Handheld Remote 57
21. Appendix 2, PID Theory and Adjustment The PID control method allows the MPC Vector to accurately maintain a specific desired setpoint for flow rate from the pump it is connected to. The PID Control Loop is a widely accepted general purpose control algorithm which is built into the MPC Vector. A PID control loop consists of three components which each have their own specific responsibilities in the control loop; the Proportional, Integral, and Derivative components.
Basic MPC Vector Control Loop PID Control System Requested Flow Rate 1 Pulsafeeder Pump 2 Flow Meter 3 Output Flow 5 4 1 Requested flow rate from the user 2 Motor speed command from the control system 3 Flow output from the pump 4 Flow measurement from the flow meter 5 Flow output from flow meter The function we are controlling is liquid flow from the pump, and the variable being controlled by the MPC Vector is motor speed.
21.2 Three Control Components: The PID controller has three adjustable internal components, all of which contribute to the final output value, they are proportional, integral, and derivative. Proportional Component The proportional component of the control system (also known as “gain”) is concerned with the current error (“current” as in time, not electricity). The component is calculated by multiplying the current error by a proportional coefficient, commonly known as Kp or proportional gain.
21.3 PID Basic Summary, what happens when I… When the proportional control is increased: Initial rise time to setpoint gets faster Overshoot once setpoint is reached tends to increase (gets worse) Steady-state error can be reduced but will never be eliminated Settling time (ability to hold setpoint) is not strongly affected Proportional is used mainly to affect the initial startup of the system, how quickly it reaches the desired setpoint.
21.4 Putting it all together to run the MPC Vector The proportional, integral, and differential components are all added together into a command sum which is used to set the motor speed. The motor speed command does have software protection which prevents the motor speed from ever exceeding the max motor speed or from being negative and therefore if the command loop is unstable, no damage can be caused to the drive, motor, or pump.
Once you see the oscillation, back the integral gain down by 0.05 – 0.1. Start the pump again and make sure that the flow rate does not overshoot the setpoint significantly. Note: you may want to use a stopwatch to time how long it takes to get to 80% of the setpoint, especially if you are using the Pulsaguard pump protection. Pulsaguard will stop the pump if the minimum flow is not reached within the timeout limit.
BULLETIN No. IOM-MPCV-0206 Rv J Engineered Pump Operations 2883 Brighton-Henrietta Townline Road Rochester, New York 14623 Telephone: (585) 292-8000 Fax: (585) 424-5619 http: //www.pulsa.com pulsa@idexcorp.
