LMI ROYTRONIC A Instruction Manual

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ROYTRONIC® Series A

Electronic Metering Pumps Instruction Manual

Manual No : 2002 Rev. : C Rev. Date : 09/2015

ROYTRONIC

Model Code Configuration

Control Code

1- Dual Manual Control:

Speed (stroking frequency) and stroke length manually adjustable

7- Pulse Input / Dual Manual Control:

External control capability through pulse input and low level float switch plus manual control adjustments of control code 1

8- Analog Input / Dual Manual Control:

External control capability through 4-20 mA input and low level float switch plus manual control adjustments of control code 1

Drive

Output / Size Code

See Most Recent Price List for Flow and Pressure Ratings

SERIES A

Model A 7 5 1 - 8 2 8 S I

Voltage Code

1 – 110-120V US Plug 2 – 220-240V US Plug 3 – 220-240V DIN Plug 5 – 220-240V UK Plug 6 – 220-240V Aust/NZ Plug 7 – 220-240V Swiss Plug 8 – 110-120V No Plug

Liquid End Code

7 – Molded Head, Single Ball Check Valves 8 – Molded Head, Double Ball Check Valves 9 – Machined Head, Double Ball Check Valves

LIQUIFRAM™ Size Code

1 – 0.2 in

2 – 0.4 in

3 – 0.8 in

Material Code

See Most Recent Price List for Material Options

Head/Valve Code

S – FastPrime

Liquid End

N – FastPrime H – AutoPrime A – AutoPrime

Connection Code

I – Inch Tubing

M – Metric Tubing

P – 1⁄2” NPT - 1⁄2” BSP Pipe

U – Black, UV Resistant Tubing

™

Head + 4FV

™

Head

™

Head + 4FV

™

Head

(SS Head only )

*NOTE :Not all configurations are available. Please see your local

distributor or price list for available options

i Instruction Manual

PRECAUTIONS

The following precautions should be taken when working with LMI® metering pumps. Please read this section carefully prior to installation.

Protective Clothing

ALWAYS wear protective clothing, face shield, safety glasses and gloves when working on or near your metering pump. Additional precautions should be taken depending on the solution being pumped. Refer to Safety Data Sheets precautions from your solution supplier.

Water Pre-Prime

All LMI® pumps are pre-primed with water when shipped from the factory. If your solution is not compatible with water, disassemble the Pump Head Assembly. Thoroughly dry the pump head, valves, seal rings, balls and LIQUIFRAM™ DIAPHRAGM. Reassemble head assembly

tightening screws in a crisscross pattern. Rell the pump head with the solution to be pumped

before priming the pump. (This will aid in priming.)

Liquid Compatibility

CAUTION: The evaluation performed by UL was tested with water only. LMI pumps are

EC1783 certied for NSF / ANSI Standard 61 and 372. Please check our listings with NSF International to conrm approved chemicals and concentrations for use. Always refer to the

solution supplier and the LMI® Chemical Resistance Chart for compatibility of your specic LMI® metering pump. Contact your local LMI® distributor for further information.

Tubing Connections

Inlet and outlet tubing or pipe sizes must not be reduced. Outlet tubing size must not be

increased. Make certain that all tubing is SECURELY ATTACHED to ttings prior to start-up

(see Section 2.3, Tubing Connections). ALWAYS use LMI® supplied tubing with your pump,

as the tubing is specically designed for use with the pump ttings. It is recommended that

all tubing be shielded and secure to prevent possible injury in case of rupture or accidental damage. If tubing is exposed to sunlight, black UV resistant tubing should be installed. Check tubing frequently for cracks and replace as necessary.

Vinyl Tubing

Your carton may contain a roll of clear vinyl tubing; this is only for connection to the return line of the FASTPRIME™ Head and must not be used as discharge tubing.

Ground Fault Circuit Interrupter

WARNING: To reduce the risk of electric shock, install only on a circuit protected by a Ground

Fault Circuit Interrupter (GFCI).

Line Depressurization

To reduce the risk of chemical splash during disassembly or maintenance, all installations should be equipped with line depressurization capability. Using LMI®’s Four-Function Valve

(4-FV) is one way to include this feature.

iiInstruction Manual

Fittings and Machine Threads

All ttings should be hand-tightened. An additional 1/8 - 1/4 turn after the tting is snug may

be necessary to provide a leak-proof seal. Excessive over tightening or use of a pipe wrench

can cause damage to the ttings, seals, or pump head. All LMI® pumps have straight screw machine threads on the head and ttings and are sealed by the O-rings. DO NOT use PTFE

tape or pipe dope to seal threads. PTFE Tape may only be used on the 1/2” NPT thread side of the Injection Check Valve, the stainless steel liquid end connections, or if

piping is directly connected to the pipe threads of the suction or discharge ttings.

Plumbing

Always adhere to your local plumbing codes and requirements. Be sure installation does not constitute a cross connection. Check local plumbing codes for guidelines. LMI® is not responsible for improper installations.

Back Pressure / Anti-Syphon Valve

If you are pumping downhill or into low or no system pressure, a back pressure / antisyphon

device such as LMI®’s Four-Function Valve (4-FV) should be installed to prevent over pumping or syphoning. Contact your LMI® distributor for further information.

Electrical Connections

WARNING: To reduce the risk of electrical shock, the metering pump must be plugged into a properly grounded grounding-type receptacle with ratings conforming to the data on the pump control panel. The pump must be connected to a good ground. Do not use adapters! All wiring must conform to local electrical codes. If the supply cord is damaged, it must be replaced by the manufacturer, stocking distributor, or authorized repair center in order to avoid a hazard.

Over Pressure Protection

To ensure safe operation of the pump it is recommended that some type of safety / pressure

relief valve be installed to protect the piping and other system components from failing due to excessive pressure.

Chemical Concentration

There is a potential for elevated chemical concentration during periods of no ow, for example, during backwash in the system. Steps, such as turning the pump OFF, should be

taken during operation or installation to prevent this. See your distributor about other external control options to help mitigate this risk.

Retightening Components

Plastic materials will typically exhibit creep characteristics when under pressure over a period

of time and to insure a proper t it may be necessary to retighten the head bolts periodically. To insure proper operation, we recommend tightening the bolts to 25 inch pounds during installation after the rst week of operation and on a monthly basis thereafter.

iii Instruction Manual

TABLE OF CONTENTS

SECTION 1 - INTRODUCTION ............................................................... 1

1.1 SPECIFICATION .................................................................1

1.2 UNPACKING CHECK LIST .........................................................2

SECTION 2 - INSTALLATION ................................................................ 3

2.1 PUMP LOCATION AND INSTALLATION ............................................... 3

2.2 PUMP MOUNTING ............................................................... 3

2.2.1 Flooded Suction ................................................................ 3

2.2.2 Suction Lift - Wall Bracket Mount ...................................................4

2.2.3 Suction Lift - Tank Mount ......................................................... 4

2.2.4 Suction Lift - Shelf Mount .........................................................4

2.3 TUBING CONNECTIONS .......................................................... 5

2.4 FOUR - FUNCTION VALVES (4-FV) ..................................................6

2.5 FOUR - FUNCTION VALVE INSTALLATION ........................................... 7

2.6 FASTPRIME™ .................................................................. 7

2.7 AUTOPRIME™ .................................................................. 8

2.8 FOOT VALVE / SUCTION TUBING INSTALLATION ...................................... 9

2.9 INJECTION CHECK VALVE AND DISCHARGE TUBING INSTALLATION .................... 10

SECTION 3 - OPERATION ................................................................. 11

3.1 OUTPUT ADJUSTMENT CONTROLS ............................................... 11

3.2 START-UP AND ADJUSTMENT .................................................... 12

3.2.1 Start-Up / Priming for FASTPRIME™ Heads ......................................... 12

3.2.2 Start-Up / Priming for Pump Supplied with 4-FV....................................... 13

3.2.3 Start-Up / Priming Without 4-FV .................................................. 13

3.3 OUTPUT ADJUSTMENT ......................................................... 13

3.3.1 Total Pump Output ............................................................. 13

3.3.2 Calibration in Internal Mode ...................................................... 14

3.3.3 Calibration in External Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

3.4 METHODS OF EXTERNALLY TRIGGERING OR PACING A7 AND A8 PUMPS ............... 15

3.4.1 Control Modes ................................................................ 17

3.4.1.1 Local Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

3.4.1.2 Remote Mode (for A7) ......................................................... 17

3.4.1.3 Remote Mode (for A8) ......................................................... 17

SECTION 4 - MAINTENANCE............................................................... 18

4.1 DEPRESSURIZING THE DISCHARGE LINE (FOR PUMPS EQUIPPED WITH A 4-FV ONLY).... 18

4.2 DEPRESSURIZING THE DISCHARGE LINE (FOR SINGLE-BALL FASTPRIME™ HEADS ONLY) 18

4.3 LIQUIFRAM™ DIAPHRAGM REPLACEMENT ......................................... 19

4.4 CARTRIDGE VALVE AND O-RING REPLACEMENT .................................... 20

4.5 INJECTION CHECK VALVE PARTS REPLACEMENT ................................... 21

ivInstruction Manual

4.6 FASTPRIME™ VALVE O-RING REPLACEMENT ....................................... 22

4.7 STROKE LENGTH SETTING ...................................................... 24

4.8 A DRIVE ASSEMBLY EXPLODED VIEW DIAGRAM..................................... 25

4.9 EPU WIRING DIAGRAM ......................................................... 26

SECTION 5 - TROUBLESHOOTING .......................................................... 27

LIST OF ILLUSTRATIONS

FIGURE 1. Unpacking Check List .............................................................. 2

FIGURE 2. Flooded Suction.................................................................. 3

FIGURE 3. Suction Lift Mounts................................................................ 4

FIGURE 4. Tubing Connections ............................................................... 5

FIGURE 5. Typical Installations Requiring the AntiSyphon Feature of a Four-Function Valve ................6

FIGURE 6. Four-Function Valve Tubing Connection ................................................ 7

FIGURE 7. FASTPRIME™ Head .............................................................. 7

FIGURE 8. AUTOPRIME™................................................................... 8

FIGURE 9. Foot Valve,Suction Tubing Installation .................................................9

FIGURE 10. Typical Injection Check Valve Installations ............................................ 10

FIGURE 11. Output Adjustment Controls ....................................................... 11

FIGURE 12. Pin Functions (3-Pin) ............................................................ 11

FIGURE 13. Pin Functions (5-Pin) ............................................................ 12

FIGURE 14. Calibration in Internal Mode ....................................................... 14

FIGURE 15. Triggering Through External Control Connector ........................................ 15

FIGURE 16. Method of External Triggering ..................................................... 16

FIGURE 17. LIQUIFRAMTM DIAPHRAGM Replacement ........................................... 19

FIGURE 18. Injection Check Valve Parts Replacement .............................................21

FIGURE 19. FASTPRIME™ Valve O-Ring Replacement ........................................... 22

FIGURE 20. FASTPRIME™ Valve O-Ring Replacement (Contd.) .................................... 23

FIGURE 21. Stroke Length Setting ............................................................24

FIGURE 22. Series A Drive Assembly Explode View Diagram....................................... 25

FIGURE 23. EPU Wiring Diagram ............................................................ 26

v Instruction Manual

SECTION 1 - INTRODUCTION

LMI® manufactures an extensive line of Chemical

Metering Pumps, pH / ORP controllers and

related accessories for water and waste water Treatment industries. This manual addresses the installation, maintenance and troubleshooting procedures for manually and externally controlled pumps. LMI® has a worldwide network of stocking representatives and authorized repair centres to

give you prompt and efcient service.

Please review this manual carefully. Pay particular attention to warnings and precautions. Always follow good safety procedures, including the use of proper clothing, eye and face protection.

This manual is for Roytronic® Series A ELECTRONIC METERING PUMP.

1.1 SPECIFICATION

AXX1, AXX8

Operating Temperature

Voltage 110 to 120 V 220 to 240 V

Frequency 50 to 60 Hz 50 to 60 Hz

Max. Current 0.66 A 0.34 A

Wattage 39 W 42 W

Fuse Specication

14 to 113°F

-10 to 45°C

1.25 AHT (5 x 20 mm)

AXX2-AXX7,

AXX9

14 to 113°F

-10 to 45°C

1.25 AHT (5 x 20 mm)

1Instruction Manual

SECTION 1 - INTRODUCTION

1.2 UNPACKING CHECK LIST

Your carton will contain many or all of the following items. Please notify the carrier immediately if there are any signs of damage to the pump or its parts.

Metering Pump

Ceramic Foot Valve

Weight

Foot Valve Tubing (0 to 3 Rolls)

Injection Check

Valve

Four - Function Valve

(Optional)

Low - Level Sensor

(Optional)

Figure 1. Unpacking Check List

External Control Cable (Optional)

Instruction Manual

Tube Connection

Hardware

INCORRECT

CORRECT

Avoid this type of false flooded suction

SECTION 2 - INSTALLATION

2.1 PUMP LOCATION AND INSTALLATION

Locate pump in an area convenient to solution tank and electrical supply.

The pump should be accessible for routine maintenance and should not be operated in

ambient temperatures above 113°F (45°C). If the

pump will be exposed to direct sunlight, LMI® black, UV resistant tubing should be installed.

This pump is cord connected and not intended for permanent mounting to a building. However, temporary mounting to stabilize the pump during operation may be necessary as long as tools are not required for the installation or removal of the pump.

2.2 PUMP MOUNTING

The pump can be mounted in one of two ways:

A. FLOODED SUCTION (ideal installation); or

B. SUCTION LIFT - when suction lift is less than

5 feet (1.5 m) for solutions having a specic

gravity of water or viscosity of less than

100 cSt (centistokes). For denser or more

viscous solutions, consult distributor.

2.2.1 Flooded Suction

For ooded suction the pump is mounted at the

base of the storage tank. This installation is the most trouble-free and is recommended for very low outputs, solutions that gasify and high-viscosity

solutions. Since the suction tubing is lled with

solution, priming is accomplished quickly and the chance of losing prime is reduced. A foot valve is

not necessary in a ooded suction installation.

WHEN PUMPING DOWNHILL OR

INTO LOW OR NO PRESSURE

SYSTEM, A BACK PRESSURE / ANTI-SYPHON DEVICE SHOULD

BE INSTALLED TO PREVENT OVER PUMPING OR SYPHONING.

NOTE:

Although popular for all solutions, LMI®

recommends ooded suction installations for all high-viscosity uid applications.

Note that suction conditions can affect the

performance of the pump. This effect is more pronounced with lower pressure pumps. Consult your distributor for additional information.

Your LMI® metering pump must be mounted

so that the suction and discharge valves are vertical. NEVER position pump head and ttings horizontally.

Figure 2. Flooded Suction

3Instruction Manual

SECTION 2 - INSTALLATION

2.2.2 Suction Lift - Wall Bracket Mount

The pump may be mounted using an LMI® Wall

Mount Bracket Assembly (part no. 34643) directly

above the solution tank. A pump mounted in this manner allows for easy changing of solution tanks or drums.

2.2.3 Suction Lift - Tank Mount

The pump may be mounted on a molded tank provided there is a recess to keep the pump stationary. LMI® 10-gallon tank (part no. 27421),

35-gallon tank (part no. 27400) and 50-gallon tank (part no. 26350) have molded recesses for pump

mounting.

2.2.4 Suction Lift - Shelf Mount

The pump may be mounted on a shelf (customer supplied) maintaining a suction lift of less than

5 ft (1.5 m). An LMI® mounting kit (part no. 10461)

is available for securing the pump to a shelf.

Figure 3. Suction Lift Mounts

Instruction Manual

SECTION 2 - INSTALLATION

2.3 TUBING CONNECTIONS

A. USE ONLY LMI® TUBING.

B. DO NOT USE CLEAR VINYL TUBING ON THE DISCHARGE SIDE OF THE PUMP. THE PRESSURE CREATED BY THE PUMP CAN RUPTURE VINYL TUBING, WHICH IS ONLY FOR CONNECTION TO THE RETURN LINE OF THE FASTPRIME™ FITTING.

C. BEFORE INSTALLATION, ALL TUBING MUST BE CUT WITH A CLEAN SQUARE END.

D. VALVE AND HEAD CONNECTIONS FROM THE FACTORY ARE CAPPED OR PLUGGED TO RETAIN PRE-PRIME WATER. REMOVE AND DISCARD THESE CAPS OR PLUGS BEFORE CONNECTING TUBING.

E. DO NOT USE PLIERS OR PIPE WRENCH ON COUPLING NUTS OR FITTINGS.

The LMI® Tubing Connection System provides a reliable system to connect your pump to corresponding tubing sizes. To assemble tubing

onto the tting:

1. Insert tubing through Coupling Nut-Tubing should enter the smaller end of the Coupling Nut

rst, orienting the larger opening of the Coupling

Nut toward the tubing end.

2a. For 1/4” OD tubing: Position the Female

Ferrule so that 1/4” to 3/8” (5-10 mm) of tubing protrudes from the Female Ferrule. Orient the raised collar of the Ferrule toward the Coupling

Nut (reference FIGURE 4a).

2b. For 3/8” or 1/2” OD tubing: Position a Female

Ferrule about one inch (25 mm) from end of tubing. Orient the raised collar of the Female Ferrule toward the Coupling Nut. Then, insert the Male Ferrule onto the end of the

tube, pushing the tube into the bottom of the

groove in the Male Ferrule. Then slide the Female Ferrule down the tubing and with your ngers, press tightly into the Male Ferrule

(reference FIGURE 4b).

3. Firmly hand tighten the Coupling Nut onto the tting.

Note:

Tightening with pliers may cause the Ferrules to break.

Figure 4a.

Figure 4b. Tubing Connections

5Instruction Manual

SECTION 2 - INSTALLATION

2.4 FOUR - FUNCTION VALVES (4-FV)

Your pump may be equipped with a 4-FV, or

standard discharge valve. If your pump is not

equipped with a 4-FV and you feel it is needed

in your application, it can be purchased as an accessory. Contact your local LMI® stocking

distributor. The features of a 4-FV are listed.

1. Pressure Relief: If the discharge line is over

pressurized, the valve opens sending solution back to the supply tank.

2. Line Depressurization: Opening the relief knob provides line drain back to the supply tank.

3. Anti-Syphon: Prevents syphoning when pumping solution downhill or into a vacuum.

4. Back Pressure: Supplies approximately 25 psi

back pressure to prevent over pumping when little or no system back pressure is present.

4-FV prevents syphoning when

pumping downhill into

low or no pressure.

Figure 5. Typical Installations Requiring the AntiSyphon

Feature of a Four-Function Valve

4-FV prevents syphoning when

pumping into a vacuum such as the

suction side of recirculating pump.

Instruction Manual

SECTION 2 - INSTALLATION

2.5 FOUR - FUNCTION VALVE INSTALLATION

To install a 4-FV, the 4-FV Fitting and Coupling

Nut should be assembled with the appropriate cartridges into the discharge port of the pump.

Use a 13/16” or 20 mm socket to tighten tting. Tightening to 50 inch-pounds is recommended. Do not over tighten. To assemble the 4-FV body,

assemble the coupling nut and the threads at the

bottom of the body. Firmly hand tighten the body in the desired orientation. Next, insert the 1/4” tubing through the bleed nut. Ensure that about 1/4” (6 mm) of tubing is protruding through the tip of the bleed nut. Firmly hand tighten the bleed nut in the hole on the side of the 4-FV. This tubing should be

routed back to the supply tank. To ensure proper function of the priming function, the end of this tubing should not be submerged in the solution.

THIS RETURN LINE TUBING

MUST BE SECURED TO ENSURE

PUMPED SOLUTION WILL SAFELY RETURN TO SUPPLY TANK.

2.6 FASTPRIME™

The FASTPRIME™ Head is equipped with a valve

that allows for opening the head to atmospheric pressure. When installing a pump equipped with

a FASTPRIME™ Head connect the 3/8” outer

diameter clear vinyl tubing provided with the pump to the barbed nozzle. Route the vinyl return line back to the solution tank. This tubing must not be submerged in the solution.

FASTPRIME™ Valve

3/8” Clear Vinyl Tubing

Discharge

1/4"

Through

1/4" Tubing

Bleed Nut

To Solution

Tank or Drum

To Pump Head

Figure 6. Four-Function Valve

Tubing Connection

Figure 7. FASTPRIME™ Head

Four-Function Valve Body

4-FV Fitting

Coupling Nut

7Instruction Manual

Return Fitting Use 1/2” polyethylene tubing here and route to supply tank

Discharge Fitting

Suction Fitting

SECTION 2 - INSTALLATION

2.7 AUTOPRIME™

The AUTOPRIME™ Liquid End is equipped with

a valve that allows for constant removal of vapors and gasses inherent with effervescent chemicals such as sodium hypochlorite and hydrogen peroxide. The valve keeps the pump primed automatically. When installing a pump equipped

with an AUTOPRIME™ Liquid End connect the 1/2” OD polyethylene tubing to the top vertical tting and route this line back to the supply tank.

To ensure priming, this tubing should not be

submerged in the solution. The horizontal tting is the discharge and the bottom vertical tting is

the suction.

Figure 8. AUTOPRIME™

Instruction Manual

SECTION 2 - INSTALLATION

2.8 FOOT VALVE / SUCTION TUBING INSTALLATION

The foot valve acts as a check valve to keep the pump primed in suction lift applications.

The foot valve is designed to be submersed in the solution tank or drum and must sit in a vertical position at the bottom. Position approximately

2 inches (50 mm) OFF the bottom if the tank or

drum contains sediment.

The ceramic weight, when installed, helps position the foot valve in a vertical position.

1. Attach the foot valve to one end of the suction tubing (see Tubing Connections, Section 2.3).

2. Slide the ceramic weight over the tubing end

until it contacts the top of the foot valve coupling nut.

3. Place foot valve and tubing into the solution tank. Check that the foot valve is vertical and

approximately 2 inches (50 mm) from the bottom

of the tank or drum (see illustration). Connect the other end of the tubing to the suction side of the pump head (bottom side) (see Tubing Connections, Section 2.3).

NOTE:

Pump models equipped with high-viscosity liquid ends are not equipped with foot valves. Flooded suction is recommended. A 1/2” NPT connector

is included for ooded suction installations.

Foot ValveTilted

Sideways WILL NOT PRIME

INCORRECT

Figure 9. Foot Valve,Suction Tubing Installation

Returns Lines Must Not Be Submerged

2.0 in. (50 mm)

for Sediment Accumulation

Foot Valve Must

Remain Vertical

CORRECT

9Instruction Manual

SECTION 2 - INSTALLATION

2.9 INJECTION CHECK VALVE AND DISCHARGE TUBING INSTALLATION

The Injection Check Valve prevents back ow from

a treated line. Install the injection check valve at the location where chemical is being injected into

the system. Any size NPTF tting or pipe tee with a reducing bushing to 1/2” NPTF will accept the injection check valve. PTFE tape should only be

used on threads that are connected with pipes.

Pipe Cross

Section

40°

Variation

Acceptable

40°

Variation

Acceptable

Injection

Check Valve

CORRECT

Use PTFE

Tape here on

Pipe threads only

Do NOT use

PTFE tape

On machined

Threads

When installing the Injection Check Valve, be sure to position it so that the valve enters the bottom of your pipe in a vertical position. Variations left and right within 80° are acceptable (see illustration). After cutting an appropriate length of tubing, connect tubing to the injection check valve then back to the discharge side of the pump head. Make sure it does not crimp or come into contact with hot or sharp surfaces (see Tubing Connections, Section 2.3).

1” Pipe Tee

Reducing

Bushing

1” to 1/2” NPT

(Customer Supplied)

Injection

Check Valve

Flow

Figure 10. Typical Injection Check Valve Installations

Flow

Instruction Manual

SECTION 3 - OPERATION

3.1 OUTPUT ADJUSTMENT CONTROLS

1. Power / Mode Selection Button: This button

allows convenient starting and stopping of the

pump. For pumps with external control capability

(A7 and A8) this button switches pump operation between internal and external modes. When operating in internal mode the Pulse Indicator Light will flash green. When operating in

external mode the Pulse Indicator Light will ash

yellow.

2. Speed Adjustment Knob: This knob provides

adjustment of the stroking speed. For pumps

with this knob (A1, A7, A8) turning this knob clockwise P increases stroke frequency (speed) from a minimum of 1 stroke per minute.

3. Stroke Adjustment Knob: This knob provides

adjustment of the stroke length. Turning this knob clockwise P increases the stroke length, which results in a higher amount of chemical displaced per stroke. It is recommended that the

stroke range stay between 20% and 100%.

4. Pulse Indicator Light: This light will flash

green when pumping in internal mode and will

ash yellow when pumping in external mode. The light is on between strokes and OFF during

the actual stroke.

5. Low-Level Indicator Light: This light will turn

red when a low-level sensor registers a low

chemical level. This will turn OFF the pump.

You must have a low-level sensor connected to the pump through the low-level Connector for this function to operate.

6. Low-Level Connector (3-Pin): This connector

is for the connection of a low-level sensor (48413). The low-level switch input connections are always active for all models in all functional

modes. If the uid level drops below the level specied by the low-level sensor, the pump will

stop and the low-level Indicator Light will turn ON. The pump is designed to recognize an open circuit as full and a closed circuit as empty. The pin functions are as follows:

Figure 11. Output Adjustment Controls

1. low level signal.

3. No connection.

4. Ground / return connection.

3 1

Figure 12. Pin Functions (3-pin)

11Instruction Manual

SECTION 3 - OPERATION

7. External Control Connector (5-Pin): This

connector is for the connection of various options and accessories that can be used to externally control the pump. The pin functions (and the wire color for the standard LMI® external control cable) are as follows:

1. Remote on signal (Brown).

2. Ground / return connection (White).

3. External pulse signal (Blue) (used only with

A7 Series pumps).

4. 15 Volt supply voltage (Black).

5. 4-20mA Input signal (Green / Yellow)

(used only with A8 Series pumps).

C. MICROPACE™ Multiplier (MP-500M) - for

increasing the frequency of low frequency pulses.

D. Pulse Transmitter (48489) - for pulsing in

time with another LMI® Electronic Metering Pump.

E. RFP Flowmeter and Programmable

Divider - for pacing the stroke frequency

OFF of the system ow.

3.2 START-UP AND ADJUSTMENT

1. The pump is normally self-priming if suction lift

is 5 ft (1.5m) or less and the steps below are

followed.

2. Pumps are shipped from the factory with water

in the pump head to aid in priming.

3.2.1 Start-Up / Priming for FASTPRIME™ Heads

Figure 13. Pin Functions (5-Pin)

Some of the accessories available for use with A7 Series metering pumps are listed below. Note that an Adapter Cable (48488) is needed when connecting any of the MICROPACETM units or ow meters.

A. MICROPACE™ A/D Converter (MP-100) -

for translating a 4-20 milliamp signal into an

analog signal.

B. MICROPACE™ Divider (MP-400D) - for

reducing the frequency of high frequency pulses.

READ THIS ENTIRE SECTION

COMPLETELY BEFORE PRO-

CEEDING.

When all precautionary steps have been taken, the pump is mounted and the tubing is securely attached, you may now start priming the pump.

1. Plug in or switch the pump ON.

2. While the pump is running, set the Speed

Adjustment Knob and the Stroke Adjustment

Knob at 100%.

3. Turn the FASTPRIME™ knob 1 to 2 turns

counter clockwise Q.

4. The suction tubing should begin to fill with solution from the tank.

5. A small amount of solution will begin to discharge out the return line of the FASTPRIME™ valve.

Once this happens, turn the knob clockwise P until hand tight and SHUT THE PUMP OFF.

6. The pump is now primed.

7. Proceed to output adjustment, Section 3.3.

Instruction Manual

SECTION 3 - OPERATION

3.2.2 Start-Up / Priming for Pump Supplied with 4-FV

READ THIS ENTIRE SECTION

COMPLETELY BEFORE PRO-

CEEDING.

When all precautionary steps have been taken, the pump is mounted and the tubing is securely attached, you may now start priming the pump.

1. Plug in or switch the pump ON.

2. While the pump is running, set the Speed

Adjustment Knob and the Stroke Adjustment

Knob at 100%.

3. Open the relief side (black knob) of the 4-FV by turning to the stop (about 1/8 turn).

4. The suction tubing should begin to fill with solution from the tank.

5. A small amount of solution will begin to discharge out the return line of the 4-FV. Once this happens, return the knob to the 12:00

position and SHUT THE PUMP OFF.

4. Once the solution begins to exit the pump head on the discharge side, SHUT THE PUMP OFF.

5. The pump is now primed.

6. Proceed to output adjustment, Section 3.3.

NOTE:

If the pump does not self-prime, remove the discharge check valve and pour water or

solution into the port until the head is lled.

Replace valve, then follow start up / priming steps.

3.3 OUTPUT ADJUSTMENT

Once the pump has been primed, an appropriate output adjustment MUST be made. Pump output should be calculated and adjustments made accordingly.

3.3.1 Total Pump Output

Calculate the approximate output of the pump as follows:

6. The pump is now primed.

7. Proceed to output adjustment, Section 3.3.

NOTE:

If the pump does not self-prime, remove the 4-FV on the discharge side of the pump head. Remove the check valve and pour water or

solution into the port until the head is lled.

Replace valve, then follow start up / priming steps.

3.2.3 Start-Up / Priming Without 4-FV

READ THIS ENTIRE SECTION

COMPLETELY BEFORE PRO-

CEEDING.

When all precautionary steps have been taken, the pump is mounted and the tubing is securely attached, you may prime the pump.

1. Plug in or switch ON the pump.

2. While the pump is running, set the speed knob and the stroke knob at 100%.

PUMP OUTPUT = MAX PUMP OUTPUT x % SPEED x % STROKE

Example: A151-928SI

Use Max Output (from data plate on side of pump) = 1 GPH (1 gallon per hour).

If the pump is set at 60% speed and 70% stroke

length, the approximate pump output is:

1.0 x 0.60 x 0.70 = 0.42 GPH.

Multiply by 24 (hours in one day) to calculate in

gallons per day. If pump is not equipped with speed adjustment, calculate by Max Pump Output x % Stroke only.

NOTE:

When converting between different units, remember these conversion factors:

1 Gallon = 3.785 Liters

1 Day = 1,440 Minutes

240 SPM = 14,400 SPH

3. The suction tubing should begin to fill with solution from the tank.

13Instruction Manual

SECTION 3 - OPERATION

3.3.2 Calibration in Internal Mode

Once installation is complete and the approximate output has been determined, the pump should be calibrated to adjust speed and stroke for your actual desired output. (Calibration cylinders may be purchased from your local LMI® distributor, ref. publication 1798).

1. Be sure the pump is primed and discharge tubing and Injection Check Valve are installed as they would be in normal service (i.e, including

factors such as injection pressure, uid viscosity

and suction lift).

2. Place the Foot Valve in a graduated container

with a volume of 1000 ml or more.

3. Plug in and switch pump to Internal Mode. Pump until all the air is exhausted from the suction line and head.

4. Turn the pump OFF. Rell graduated container

to a level starting point.

5. Using a stopwatch or timer, turn the pump on for a measured amount of time (120 pump

strokes minimum). The longer the time period,

the more condent you can be of the results. Be

sure to count the number of strokes during the calibration period when making comparisons.

6. Turn the pump OFF. Note the time elapsed in

relation to volume displaced in the graduate. Now, calculate the output in the time unit you choose (minutes, hours, days, etc).

7. If the output is too low or too great, use the

Stroke Adjustment Knob and / or the Speed Adjustment Knob to ne-tune the amount of ow, estimating required correction and repeat

steps 1-7.

Figure 14. Calibration in Internal Mode

Instruction Manual

SECTION 3 - OPERATION

3.3.3 Calibration in External Mode

1. Since pump output is governed by an

external device such as Flow meter-Pulser, LIQUITRON™ Controller, or 4-20 mA DC signal

from an instrument with an LMI® Analog-toDigital Converter, only the output per stroke may be calibrated.

2. With pump primed and discharge tubing

connected to the injection point as it would be

in normal service, place Foot Valve Assembly

in a graduated container with a volume of 1000 ml or more.

3. Switch pump to Internal mode with Speed

Adjustment Knob set at 100% until air is

exhausted from suction line and pump head.

4. Switch pump OFF and rell graduated container

level to a starting point.

5. Switch pump ON and count the number of strokes for exactly one minute, then switch pump OFF.

6. Note volume pumped during the calibration

period of one minute. Divide into this the number of strokes to determine the volume of solution pumped per stroke.

3.4 METHODS OF EXTERNALLY TRIGGERING OR PACING A7 AND A8 PUMPS

Switches or transistors must be capable of

switching 24V DC at 15 milliamperes. Minimum

time in low impedance state (ON) is 25 milliseconds. Minimum time in high impedance state (OFF) is

50 milliseconds.

NOTE:

Pins 1 (Brown wire) and 2 (White wire) must be connected / shorted together in order for the pump to be ‘ON’ in external mode.

3 2

1. Switch Closure Switch closing triggers pump

2. NPN Transistor Base goes high to trigger pump

3. PNP Transistor Base goes low to trigger pump

4. Opto Isolator

Blue

White

+ Blue

− White

+ Blue

− White

+ Blue

− White

Example:

720 ml in 240 strokes = 3.0 ml per stroke.

Multiply this by your expected stroke rate per

minute, per hour or per day and compare with desired output requirements.

7. Turn Stroke Adjustment Knob to your best estimate of required correction and repeat calibration procedure.

Note:

It may be helpful to decrease the speed of the pump in order to count the number of strokes. For accuracy count at least 120 strokes.

Figure 15. Triggering Through External

Control Connector

15Instruction Manual

SECTION 3 - OPERATION

These pumps have two operating modes: Local

(Pulse Indicator Light ashes green) and Remote (Pulse Indicator Light ashes yellow). Pressing the Power / Mode Selection Button switches

between Local and Remote modes. The default

conguration for operating mode is Local mode.

When the pump is in Local mode the Remote ON / OFF input is ignored. When the pump is in Remote mode the Remote ON / OFF input is always monitored. The pump will return to the last power mode if power is interrupted.

NOTE:

The default configuration for the Remote ON / OFF input is:

open contacts = pump stopped

closed contacts = pump enabled

Therefore pins 1 and 2 of the External Control Connector must be shorted together in external mode for the pump to respond to external signals.

MP-400D

-100

-500M

™

Higher Frequency Pulses

DIVIDE

™

Lower Frequency Pulses

4-20 milliamp DC

MICROPACE

A/D CONVERTER

MICROPACE

4 D IGIT

MICROPACE

4 DIGIT MU LT IPLIER

Pulse

Transmitter

Programmable

Divider

Optional

Low Level

Sensor

Ful l ( Open)

Empt y (Closed)

A7 and A8

RFP Flowmeter

FC Flowmeter/Contactor

4-20 milliamp DC

Programmable

Divider

Figure 16. Methods of External Triggering

Instruction Manual

SECTION 3 - OPERATION

3.4.1 Control Modes

3.4.1.1 Local Mode

When in Local mode A7 and A8 pumps run at the speed indicated by the speed knob.

3.4.1.2 Remote Mode (for A7)

Pins 1 (brown wire) and 2 (white wire) must be connected / shorted together in order for the pump

to respond to pulses in external mode.

a) In Remote mode pulses occurring faster than

a rate of 1200 pulses per minute (less than 50ms apart) and pulses with a duration of less than 25ms are ignored.

b) Pulses occurring between 240 strokes per

minute (SPM) and 1200 pulses per minute results in the pump running at 240 SPM. (Output codes 4,5 and 6)

c) Pulses occurring at less than 240 SPM

results in the pump stroking at that rate.

3.4.1.3 Remote Mode (for A8)

Pins 1 (brown wire) and 2 (white wire) must be connected / shorted together in order for the pump

to respond to a milliamp signal.

In Remote mode the pump speed is controlled by a milliamp (mA) Analog Input signal. The factory default settings for the Analog Input are:

20mA input = maximum speed

4 mA = 0 strokes per minute

In the default settings, the fast level mA input is greater than the slow level mA input. This is known as direct action. In direct action when the mA input is at or above the setting for the fast level, the pump will run at maximum speed. When the mA input is below the setting for the slow level, the pump will stop.

NOTE:

The default denition of a pulse is:

close = pulse starts

open = pulse ends

17Instruction Manual

SECTION 4 - MAINTENANCE

LMI® recommends replacing the elastomeric components of the pump on an annual basis. Refer to the LMI® Metering Pump Price List for

the proper Spare Parts Kit or RPM PRO PAC™

kit number or contact your local LMI® stocking distributor.

4.1 DEPRESSURIZING THE DISCHARGE LINE (FOR PUMPS EQUIPPED WITH A 4-FV ONLY)

ALWAYS WEAR PROTECTIVE

CLOTHING, FACE SHIELD, SAFETY GLASSES AND GLOVES WHEN PERFORMING ANY MAINTENANCE OR REPLACEMENT ON YOUR PUMP.

TO REDUCE THE RISK OF

CHEMICAL SPLASH DURING DISASSEMBLY OR MAINTENANCE, ALL INSTALLATIONS SHOULD BE EQUIPPED WITH LINE DEPRESSURIZATION CAPABILITY. USING LMI®’S FOUR-FUNCTION VALVE (4-FV) IS ONE WAY TO INCLUDE THIS FEATURE.

READ STEPS 1 AND 2 BELOW BEFORE PROCEEDING.

1. Be sure the Injection Check Valve is properly

installed and is operating. If a shut-OFF valve

has been installed downstream of the Injection Valve, it should be closed.

4.2 DEPRESSURIZING THE DISCHARGE LINE (FOR SINGLE-BALL FASTPRIME™ HEADS ONLY)

ALWAYS WEAR PROTECTIVE

CLOTHING, FACE SHIELD, SAFETY GLASSES AND GLOVES WHEN PERFORMING ANY MAINTENANCE OR REPLACEMENT ON YOUR PUMP.

READ STEPS 1 AND 2 BELOW BEFORE PROCEEDING.

1. Be sure the Injection Check Valve is properly

installed and is operating. If a shut-OFF valve

has been installed downstream of the Injection Valve, it should be closed.

BE SURE YOUR RELIEF TUB-

ING IS CONNECTED TO YOUR FASTPRIME™ VALVE AND RUNS BACK TO YOUR SOLUTION DRUM OR TANK.

2. Turn the FASTPRIME™ knob one-and-a-half

turns counter-clockwise Q . The discharge line is now depressurized. Keep valve open until solution drains back down the discharge tubing into solution drum or tank. Then turn the knob clockwise P to tighten knob to the closed position.

BE SURE YOUR RELIEF TUBING

IS CONNECTED TO YOUR 4-FV

AND RUNS BACK TO YOUR SOLUTION DRUM OR TANK.

2. Turn the black knob on the 4-FV 1/8 turn

to the stop. Turn and hold the yellow knob for a few seconds. The discharge line is now depressurized. Keep both valve knobs open until solution drains back down the discharge tubing into the solution tank or drum. Then release the yellow knob and turn the black knob to its normal position.

Instruction Manual

SECTION 4 - MAINTENANCE

4.3 LIQUIFRAM™ DIAPHRAGM REPLACEMENT

ALWAYS WEAR PROTECTIVE

CLOTHING, FACE SHIELD, SAFETY GLASSES AND GLOVES WHEN WORKING NEAR OR PERFORMING ANY MAINTENANCE OR REPLACEMENT ON YOUR PUMP. SEE SDS INFORMATION FROM SOLUTION SUPPLIER FOR ADDITIONAL PRECAUTIONS.

LMI® metering pumps are designed for trouble-free operation, yet routine maintenance of elastomeric parts is essential for optimum performance.

This involves replacing the LIQUIFRAM™

DIAPHRAGM, cartridge valves, O-rings, and the injection check valve spring. LMI® recommends replacing these parts at least once a year; however, frequency will depend on your particular application.

When replacing the LIQUIFRAM™ DIAPHRAGM,

the cartridge valves, or O-rings, the injection check valve spring should also be replaced (see next

Section 4.4). A Spare Parts Kit or RPM PRO PAC™

kit containing these parts may be obtained from your local distributor.

Replacing the LIQUIFRAM™ DIAPHRAGM:

1. Carefully depressurize, drain and disconnect the discharge line (see previous sections in this manual).

2. Place the Foot Valve into a container of water or

other neutralizing solution. Turn the pump on to

ush the head assembly. Once the pump head has been ushed, lift the Foot Valve out of the

solution and continue to pump air into the pump head until the pump head is purged of water or neutralizing solution.

NOTE:

If the liquid cannot be pumped due to LIQUIFRAM™ DIAPHRAGM rupture, carefully disconnect the suction and discharge tubing using protective clothing, gloves and face shield. Remove the four screws and washers from the head and immerse the head in water or other neutralizing solution.

3. Start the pump. While running, set the Stroke

Adjustment Knob to 0% and turn the pump OFF.

LIQUIFRAM

Head

Figure 17. LiquiframTM Diaphragm Replacement

Shaft

™

Adapter Disk

Seal

Drive

19Instruction Manual

SECTION 4 - MAINTENANCE

4. With the unit OFF, unscrew the LIQUIFRAM™

DIAPHRAGM by carefully grasping the outer edge and turning it counter-clockwise Q.

Discard old Liquifram™. Remove the Adapter Disk (located behind the LIQUIFRAM™

DIAPHRAGM ) and ensure that the diameter of the raised section is the same as the

diameter of the replacement LIQUIFRAM™

DIAPHRAGM.

5. Remove Adapter Disk and check condition of the

Shaft Seal. Replace Shaft Seal if necessary.

6. Replace the Adapter Disk so that the drain

hole of the disk is oriented downward and the mounting holes line up with the mounting holes of the pump.

BE CAREFUL NOT TO SCRATCH

THE PTFE FACE OF THE NEW

LIQUIFRAM™ DIAPHRAGM.

7. Screw on the new LIQUIFRAM™ DIAPHRAGM

clockwise P until turned all the way in. Start the

pump and turn the stroke knob to 100%. Stop

the pump.

8. Remount the pump head using the four (4) screws and washers. Tighten in a criss-cross pattern. After one week of operation, recheck the screws and tighten if necessary and on a monthly basis thereafter.

4.4 CARTRIDGE VALVE AND O-RING REPLACEMENT

ALWAYS WEAR PROTECTIVE

CLOTHING, FACE SHIELD,

SAFETY GLASSES AND GLOVES WHEN WORKING ON OR

PERFORMING ANY MAINTENANCE OR REPLACEMENT ON

YOUR PUMP. SEE SDS INFORMATION FROM SOLUTION

SUPPLIER FOR ADDITIONAL PRECAUTIONS.

1. Carefully depressurize and disconnect the discharge line (see Section 4.1 or 4.2 in this manual).

2. Place the Foot Valve into a container of water

or other neutralizing solution. Turn the pump on

to ush the head assembly. Once the pump has been ushed, lift the Foot Valve out and continue

to pump to let air into the pump head until pump is purged of water or neutralizing solution.

NOTE:

Spare part replacement kits include specific instructions for valve replacement. Please follow the instructions included with the replacement kit.

3. Carefully disconnect one tubing connection and

tting at a time, then remove and replace the

worn valve and O-rings. If necessary, carefully loosen stuck valves by prying side to side using a small screwdriver through the center hole of the valve.

NOTE:

Before disassembling the check valves, note the orientation of the valve.

4. Install new check valves in each location. Ensure that the cartridges are oriented correctly.

Refer to the LMI® Metering Pump Price List for

the proper Spare Parts Kit or RPM PRO PAC™

kit number or contact your local LMI® stocking distributor.

Instruction Manual

SECTION 4 - MAINTENANCE

4.5 INJECTION CHECK VALVE PARTS REPLACEMENT

DEPRESSURIZE AND DRAIN

PIPELINE (OR ISOLATE

INJECTION CHECK VALVE POINT USING VALVES) SO THAT

INJECTION CHECK VALVE CAN SAFELY BE DISASSEMBLED.

ALWAYS WEAR PROTECTIVE CLOTHING, FACE SHIELD,

SAFETY GLASSES AND GLOVES WHEN WORKING NEAR OR

PERFORMING ANY MAINTENANCE OR REPLACEMENT ON

YOUR PUMP. SEE SDS INFORMATION FROM SOLUTION

SUPPLIER FOR ADDITIONAL PRECAUTIONS.

Refer to the LMI® Metering Pump Price List for

the proper Spare Parts Kit or RPM PRO PAC™

kit number or contact your local LMI® stocking distributor.

1. Isolate Injection Check Valve and depressurize pipe or drain pipeline.

2. Carefully depressurize and disconnect the

discharge line (see Section 4.1 or 4.2 in this manual).

Spare part replacement kits include specific instructions for valve replacement. Please follow the instructions included with the replacement kit.

3. Carefully disconnect the tubing leading to the Injection Check Valve, then remove the Injection

Check Valve Fitting. Remove and replace the

worn spring, seat, ball and O-ring.

NOTE:

Before disassembling the check valve, note the orientation of the parts.

4. Install a new spring, seat, ball and O-ring. Ensure that the parts are oriented correctly.

Figure 18. Injection Check Valve Parts Replacement

Spring

Ball

Seat

O-Ring

Injection Check

Valve Fitting

21Instruction Manual

SECTION 4 - MAINTENANCE

4.6 FASTPRIME™ VALVE ASSEMBLY O-RING REPLACEMENT

ALWAYS WEAR PROTECTIVE

CLOTHING, FACE SHIELD, SAFETY GLASSES AND GLOVES WHEN PERFORMING ANY MAINTENANCE OR REPLACEMENT ON YOUR PUMP.

Refer to the LMI® Metering Pump Price List for

the proper Spare Parts Kit or RPM PRO PAC™

kit number or contact your local LMI® stocking distributor.

1. Be sure the Injection Check Valve is properly

installed and is operating. If a shut-OFF valve

has been installed downstream of the Injection Valve, it should be closed.

BE SURE YOUR RELIEF

TUBING IS CONNECTED TO YOUR FASTPRIME™ VALVE AND RUNS BACK TO YOUR SOLUTION DRUM OR TANK.

2. Turn the FASTPRIME™ Knob one-and-a-

half turns counter-clockwise Q . This will depressurize the head. Keep valve open. Carefully remove the return line by gently pulling tubing and moving it from side to side

to gradually back tubing OFF of the barbed tting.

3. Hold return line tubing upright until solution drains back into solution drum or tank.

4. Using a 3/4” (or 19 mm) socket or wrench

remove Retaining Nut and pull out the entire

FASTPRIME™ Valve assembly. Remove and

replace the two small O-rings.

5. Reinsert the FASTPRIME™ Valve assembly

and retighten the Retaining Nut. Then turn the FASTPRIME™ Knob clockwise P to tighten knob to the closed position. To avoid damaging

the parts, it is important that the ange on the FASTPRIME™ Valve is ush with the Retaining

Nut prior to reassembly.

6. Recut 1 to 2 inches OFF the tip of the return line

and ensure the end is squared. Press the return line tubing on completely past the barbs.

Note gap between Flange

INCORRECT

CORRECT

and Retaining Nut

No gap between Flange and Retaining Nut

Figure 19. FASTPRIME™ Valve Assembly O-Ring Replacement

Instruction Manual

O-Rings

Retaining Nut

FastPrimeTM Valve

FastPrime™ Valve

SECTION 4 - MAINTENANCE

3/8” Clear Vinyl Tubing

FastPrime™ Knob

Figure 20. FASTPRIME™ Valve Assembly O-Ring Replacement (Contd.)

23Instruction Manual

SECTION 4 - MAINTENANCE

4.7 STROKE LENGTH SETTING

The Stroke Adjustment Knob is calibrated for each pump and does not need to be removed during

LIQUIFRAM™ DIAPHRAGM replacement or

during most other maintenance. If the Stroke Knob is removed for any reason it becomes necessary

to reset the stroke length. Follow the procedure

below to approximate the proper factory setting. If a more accurate setting is required contact your distributor or manufacturer.

1. Install a new Stroke Shaft. Note that there will be some resistance as the O-ring slides into the control panel. The Stroke Knob can be used to turn the Stroke Shaft. Continue to turn the Stroke Shaft until there is no longer any diaphragm movement. It may be necessary to turn ON the pump in order to get the Stroke Knob completely forward; however, care should be taken to ensure that the Stroke Shaft is contacting the Plunger before turning ON the unit. Otherwise the pump could be damaged.

2. Once the Stroke Shaft is completely forward,

you can reset the stroke length. Press in the Stroke Knob so that the Stroke Knob Pointer indicates 0 (zero).

3. Use a Phillips head screwdriver to install the Stroke Knob Screw.

4. Insert the Stroke Knob Pointer into the Stroke Knob.

Figure 21. Stroke Length Setting

Instruction Manual

SECTION 4 - MAINTENANCE

4.8 SERIES A DRIVE ASSEMBLY EXPLODED VIEW DIAGRAM

Figure 22. Series A Drive Assembly Exploded View Diagram

25Instruction Manual

SECTION 4 - MAINTENANCE

4.9 EPU WIRING DIAGRAM

A0/A1 PULSER

YEL

EPU ASSEMBLY EPU ASSEMBLY

GRN OR GRN/YEL

POWER CORD

Figure 23. EPU Wiring Diagram

NOTE:

Refer to Section 2.3 for tubing connections.

A7/A8 PULSER

BLK OR BRN BLK OR BRN

WHT OR BLU WHT OR BLU

YEL

GRN OR GRN/YEL

YEL

POWER CORD

Instruction Manual

SECTION 5 - TROUBLESHOOTING

PROBLEM POSSIBLE CAUSE SOLUTION

1. Pump not turned ON or plugged in. 1. Turn ON pump / plug in pump.

2. Always prime pump with speed and stroke at 100%.

3. Foot Valve must be vertical (see Foot

Valve Installation, Section 2.8).

4. Maximum suction lift is 5 ft (1.5 m). Pumps with High Viscosity Liquid Handling Assemblies require ooded suction.

5. Suction tubing must be vertical. Use LMI® ceramic weight supplied with pump (see Section 2.8).

6. Do not overtighten ttings. This

causes seal rings to distort and not seat properly which causes pump to leak back or lose prime.

7. Suction tubing should be as vertical

as possible. AVOID FALSE FLOODED SUCTION!

(see Section 2.2.1).

8. Shut-OFF valves in pressurized line. Disconnect tubing at injection check valve (see Priming Section 3.2). When pump is primed, reconnect discharge tubing.

1. Rell container with solution and reprime (see Section 3.2).

2. Foot Valve must be vertical (see Foot Valve Installation, Section 2.8).

3. Maximum suction lift is 5 ft (1.5 m). Pumps with High Viscosity Liquid Handling Assemblies require ooded suction.

4. Suction tubing must be vertical. Use LMI® ceramic weight supplied with pump (see Section 2.8).

5. DO NOT OVERTIGHTEN FITTINGS. This causes seal rings to distort and not seat properly which causes pump to leak back or lose prime.

6. Suction tubing should be as vertical as possible. AVOID FALSE FLOODED SUCTION!

(see Section 2.2.1).

7. Check for pinholes, cracks. Replace if necessary.

Pump Will Not Prime

Pump Loses Prime

2. Output dials not set properly.

3. Foot Valve not in vertical position on

bottom of tank.

4. Pump suction lift too high.

5. Suction tubing is curved or coiled in tank.

6. Fittings are over tightened.

7. Air trap in suction valve tubing.

8. Too much pressure at discharge. (Pumps without multi-function valve.)

1. Solution container ran dry.

2. Foot Valve is not in a vertical position on the bottom of the tank.

3. Pump suction lift is too high.

4. Suction tubing is curved or coiled in tank.

5. Fittings are over tightened.

6. Air trap in suction valve tubing.

7. Air leak on suction side.

27Instruction Manual

SECTION 5 - TROUBLESHOOTING

PROBLEM POSSIBLE CAUSE SOLUTION

1. Worn tubing ends.

2. Loose or cracked tting.

Leakage at tubing

3. Worn seal rings.

4. Solution attacking Liquid Handling Assembly

1. Pump’s maximum pressure rating is exceeded by injection pressure.

2. Worn Seal Rings.

3. Ruptured LIQUIFRAM™

Low Output or Failure

to Pump Against

Pressure

Failure to Run

Excessive Pump

Output

DIAPHRAGM.

4. Incorrect stroke length.

5. Tubing run on discharge may be too long.

6. Clogged Foot Valve strainer.

1. Pump not turned ON or plugged in. 1. Turn ON or plug in pump.

2. EPU failure.

3. Pulser failure.

1. Syphoning. (Pumping downhill without a multi-function valve).

2. Little or no pressure at injection

point.

3. Excessive strokes per minute.

1. Cut about 1 in (25 mm) OFF tubing and then replace as before.

2. Replace tting if cracked. Carefully hand tighten ttings. DO NOT USE PIPE WRENCH. An additional 1/8 or 1/4 turn may be necessary

3. Replace balls and seal rings (see Section 4.4)

4. Consult your local distributor for alternate materials.

1. Injection pressure cannot exceed pump’s maximum pressure. See pump data plate.

2. Worn seal rings or cartridge valves may need replacement (see Section 4.4).

3. Replace LIQUIFRAM™

DIAPHRAGM (see Section 4.3).

4. Recalibrate Output (see Section 3.3.2)

5. Longer tubing runs may create frictional losses sufcient to reduce

pump’s pressure rating. Consult LMI® Distributor for more information.

6. Remove Foot Valve strainer when pumping slurries or when solution particles cause strainer to clog.

2. Disassemble pump and measure the resistance of the EPU across the EPU wires. Consult supplier or LMI® Distributor. (See Section 4.8).

3. The pulser should be replaced if EPU checks out OK. Consult supplier or LMI® Distributor.

1. Move injection point to a pressurized location or install an LMI® 4-FV (see Section 2.4).

2. If pressure at injection point is less than 25 psi (1.7 Bar), an LMI 4-FV

should be installed (see Section 2.4).

3. Replace pulser or resistor. Consult LMI® Distributor.

Instruction Manual

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LMI ROYTRONIC A Instruction Manual

Specifications and Main Features

Frequently Asked Questions

User Manual