Milton Roy Roytronic A Series User manual

Lit# 2002.B12/2012
201 Ivyland Rd.
Ivyland, PA 18974
TEL: [phone]
FAX: [phone]
www.lmipumps.com
Carefully read and understand all precautions before
installing or servicing any metering pump.
For le reference, please record the following data:
Model No: _____________________________________
Serial No: _____________________________________
Installation Date: ________________________________
Installation Location: _____________________________
When ordering replacement parts for your LMI Metering Pump
or Accessory, please include complete Model Number and
Serial Number of your unit.
Instruction Manual
Series A
Electronic Metering Pumps
®

Liquid End
Control Code
Speed (stroking frequency) fixed and stroke length manually
adjustable
Speed (stroking frequency) and stroke length manually
adjustable
External control capability through pulse input and low level float
switch plus manual control adjustments of control code 0
External control capability through pulse input and low
level float switch plus manual control adjustments of control
code 1
External control capability through 4-20 mA input and
low level float switch plus manual control adjustments of
control code 1
See Most Recent Price List for Flow and Pressure Ratings
1 – 110-120V US Plug
2 – 220-240V US Plug
3 – 220-240V DIN Plug
4 – 220-240V Israel Plug
5 – 220-240V UK Plug
6 – 220-240V Aust/NZ Plug
7 – 220-240V Swiss Plug
8 – 110-120V No Plug
9 – 220-240V Indian Plug
7 – Molded Head, Single Ball Check Valves
8 – Molded Head, Double Ball Check Valves
9 – Machined Head, Double Ball Check Valves
1 – 0.2 in2
2 – 0.4 in2
3 – 0.8 in2
4 – 1.6 in2
See Most Recent Price List for Material Options
S – FastPrime™Head + 4FV
N – FastPrime™Head
H – AutoPrime™Head + 4FV
A – AutoPrime™Head
I – Inch Tubing
M – Metric Tubing
P – 1⁄2” NPT - 1⁄2” BSP Pipe
U – Black, UV Resistant Tubing
Model A 7 5 1 - 8 2 8 S I
Model Code Configuration
Series A
Drive
Not all configurations are available. Please see your local
distributor or price list for available options.
(SS Head only)
®

3
Contents
1.0 Precautions ................................................................ 4
2.0 Introduction ................................................................. 6
2.1 Specications ........................................................ 6
2.2 Unpacking Check List ................................................. 7
3.0 Installation.................................................................. 8
3.1 Pump Location and Installation ........................................... 8
3.2 Pump Mounting ....................................................... 8
3.2.1 Flooded Suction ...................................................... 8
3.2.2 Suction Lift - Wall Bracket Mount ..........................................9
3.2.3 Suction Lift - Tank Mount.................................................9
3.2.4 Suction Lift - Shelf Mount ................................................9
3.3 Tubing Connections....................................................10
3.4 Four-Function Valves (4-FV) .............................................11
3.5 Four-Function Valve Installation...........................................12
3.6 FastPrime™ .........................................................12
3.7 AutoPrime™ .........................................................13
3.8 Foot Valve/Suction Tubing Installation ......................................14
3.9 Injection Check Valve and Discharge Tubing Installation .......................15
4.0 Operation ..................................................................16
4.1 Output Adjustment Controls .............................................16
4.2 Start-up and Adjustment ................................................17
4.2.1 Start-Up/Priming for FastPrime™Heads ....................................17
4.2.2 Start-Up/Priming for Pump Supplied with 4-FV ...............................18
4.2.3 Start-Up/Priming Without 4-FV ...........................................18
4.3 Output Adjustment ....................................................18
4.3.1 Total Pump Output ....................................................19
4.3.2 Calibration in Internal Mode .............................................19
4.3.3 Calibration in External Mode .............................................20
4.4 Methods of Externally Triggering or Pacing A3, A7, and A8 Pumps................21
4.4.1 Control Modes........................................................22
4.4.1.1 Local Mode ..........................................................22
4.4.1.2 Remote Mode (for A3, and A7) ...........................................22
4.4.1.3 Remote Mode (for A8)..................................................22
5.0 Spare Parts Replacement and Routine Maintenance.................................24
5.1 Depressurizing the Discharge Line (for Pumps Equipped with a 4-FV Only) ........24
5.2 Depressurizing The Discharge Line (for Single Ball FastPrime™Heads Only) .......24
5.3 Liquifram™(Diaphragm) Replacement .....................................25
5.4 Cartridge Valve and O-Ring Replacement ..................................26
5.5 Injection Check Valve Parts Replacement...................................27
5.6 FastPrime™Valve O-Ring Replacement ....................................28
5.7 Stroke Length Setting ..................................................30
5.8 A Drive Parts List .....................................................31
5.9 EPU Wiring Diagram ...................................................32
5.10 Liquid End Parts List ...................................................32
6.0 Troubleshooting..............................................................37

4
PRECAUTIONS
1.0 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 MSDS precautions from your solution supplier.
Water Pre-Prime
All LMI pumps are pre-primed with water when shipped from the factory. If your solu-
tion 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 tested by NSF for use on muriatic acid and sodium hypochlorite. Determine if the
materials of construction included in the liquid handling portion of your pump are ad-
equate for the solution (chemical) to be pumped. 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 3.3, 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 rec-
ommended 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.
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 overtightening 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 Teon®tape or pipe dope to seal threads. Teon®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 suc-
tion or discharge ttings.

5
PRECAUTIONS
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/anti-
syphon device such as LMI’s Four-Function Valve should be installed to prevent over-
pumping or syphoning. Contact your LMI distributor for furthur 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.
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.
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 after the rst week of operation and on a monthly basis thereafter.

6
INTRODUCTION
2.0 Introduction
LMI is the world’s most versatile manufacturer of economical and efcient metering
pumps. This manual addresses the installation, maintenance and troubleshooting proce-
dures for manually and externally controlled pumps. LMI has a worldwide network of
stocking representatives and authorized repair centers 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 pumps.
2.1 Specications
AXX1, AXX8 AXX2-AXX7, AXX9
Operating
Temperature
14 to 113°F
–10 to 45°C
14 to 113°F
–10 to 45°C
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 1.25 AHT (5 x 20 mm) 1.25 AHT (5 x 20 mm)

7
UNPACKING CHECK LIST
2.2 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 Foot Valve Tubing (0 to 3 Rolls)
Ceramic Foot Valve
Weight
Injection Check
Valve
Four-Function Valve
(Optional)
Low-Level Sensor
(Optional)
External Control
Cable (Optional)
Tube Connection
Hardware

8
INSTALLATION
CORRECT
3.0 Installation
3.1 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.
3.2 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.
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.
3.2.1 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 overpumping or syphoning.
Although popular for all solutions, LMI recommends ooded suction installations for
all high-viscosity uid applications.
INCORRECT
Avoid this type of false ooded suction.

9
INSTALLATION
3.2.2 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 chang-
ing of solution tanks or drums.
3.2.3 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.
3.2.4 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 number 10461) is available for securing
the pump to a shelf.

10
INSTALLATION
3.3 Tubing Connections
Use only LMI tubing.
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™tting.
Before installation, all tubing must be cut with a clean square end.
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.
DO NOT USE PLIERS OR PIPE WRENCH ON COUPLING NUTS OR FITTINGS.
To assemble tubing into the ttings:
1. Put coupling nut over tubing.
2. Press on Ferrule – Female about one inch (25 mm).
3. For 1⁄4" or 6mm OD tubing cut tubing so that only 1⁄4" to 3⁄8" (5-10 mm) protrudes
from the Ferrule. For all other tubing push the tube to the bottom of the groove in the
Ferrule – Male.
4. Firmly hand tighten the coupling nut onto the tting. Tightening with pliers may cause
the ferrules to break.
Replacement
Ferrules, and
Coupling Nuts
are available as
the following kit
numbers:
¼” Tube – 77382
3⁄8” Tube – 77383
½” Tube – 77384
One kit is needed
for each end of
the tube.
Coupling Nut
Ferrule - Female
Fitting
Ferrule - Female
Ferrule - Male
3⁄8"Tubing
1⁄4"Tubing
1⁄2"Tubing

11
INSTALLATION
3.4 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 four-function valve 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 below.
1. Pressure Relief: If the discharge line is over pressurized, the valve opens sending solu-
tion 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 overpumping
when little or no system back pressure is present.
Typical Installations Requiring the Anti-Syphon
Feature of a Four-Function Valve
4-FV prevents syphoning when
pumping downhill into
low or no pressure.
4-FV prevents syphoning when
pumping into a vacuum such as the
suction side of a recirculating pump.

12
INSTALLATION
3.5 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. Tight-
ening to 50 inch-pounds is recommended. Do not over tighten.
To assemble the Four-Function Valve 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 ¼” tubing
through the Bleed Nut. Ensure that about ¼” (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.
3.6 FastPrime™
The FastPrime™Head is equipped with a valve that allows for opening the head to at-
mospheric 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.
Four-Function Valve Tubing Connection
Discharge
1/4"
Through
FastPrimeTM Valve
FastPrime™ Head
3/8" Clear Vinyl Tubing
1/4" Tubing
Four-Function
Valve Body
4-FV Fitting
Coupling Nut
To Pump Head
To Solution
Tank or Drum
Bleed Nut

13
INSTALLATION
3.7 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 install-
ing 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.
Return Fitting
Using 1/2" polyethylene
tubing here and
route to supply tank.
Discharge Fitting
Suction Fitting

14
INSTALLATION
Use Ceramic
Weight
2.0 in. (50 mm)
for Sediment Accumulation
Foot Valve
Tilted Sideways WILL NOT PRIME
INCORRECT
Foot Valve Must
Remain Vertical
CORRECT
3.8 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, Sec-
tion 3.3).
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 illus-
tration). Connect the other end of the tubing to the suction side of the pump head
(bottom side) (see Tubing Connections, Section 3.3).
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
flooded suction
installations.
Return Lines
Must Not Be
Submerged

15
INSTALLATION
3.9 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. Teon®tape should only be used on threads that are connected with pipes.
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 3.3).
Typical Injection Check Valve Installations
1" Pipe Tee
Do NOT use
Teon tape
On machined
Threads
40°
Variation
Acceptable
Injection
Check Valve
Pipe Cross
Section
CORRECT
Use Teon
Tape here on
Pipe threads only
Injection
Check Valve
Reducing
Bushing
1" to 1/2" NPT
(Customer Supplied)
Flow
Flow
40°
Variation
Acceptable

16
OPERATION
4.0 Operation
4.1 Output Adjustment Controls
1. Power/Mode Selection Button: This button allows convenient starting
and stopping of the pump. For pumps with external control capability
(A3, A7, A8) this button switches pump operation between internal and
external modes. When operating in internal mode the Pulse Indicator
Light will ash green. When operating in external mode the Pulse Indica-
tor 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
Pincreases 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 Pincreases the stroke length, which
results in a higher amount of chemical displaced per stroke. It is recom-
mended that the stroke range stay between 20% and 100%.
4. Pulse Indicator Light: This light will ash 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:
1. Low Level Signal
3. No Connection
4. Ground/Return Connection
➂
➀
➁
➅
➃
➄
➆
1.0000
D
E
DETAIL D
SCALE 5 : 1
DETAIL E
SCALE 5 : 1
➂ ➀
➃

17
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 func-
tions (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 A3, and A7 Series pumps)
4. 15 Volt Supply Voltage (Black)
5. 4-20mA Input Signal (Green/Yellow) (used only with A8 Series pumps).
Some of the accessories available for use with A3, and A7 Series metering pumps are
listed below. Note that an Adapter Cable (48488) is needed when connecting any of the
MICROPACE(TM) units or owmeters.
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.
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.
F. FC Flowmeter/Contactor - for pacing the stroke frequency off of the system ow.
4.2 Start-up and Adjustment
• The pump is normally self-priming if suction lift is 5 ft (1.5m) or less and the steps below
are followed.
• Pumps are shipped from the factory with water in the pump head to aid in priming.
4.2.1 Start-Up/Priming for FastPrime™ Heads
Read this entire section completely before proceeding.
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 Adjust-
ment Knob at 100%.
3. Turn The FastPrime™knob 1 to 2 turns counter-clockwise Q.
4. The suction tubing should begin to ll 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 Puntil hand tight and SHUT THE
PUMP OFF.
6. The pump is now primed.
7. Proceed to output adjustment, Section 4.3.
1.0000
D
E
DETAIL D
SCALE 5 : 1
DETAIL E
SCALE 5 : 1
➂➀
➃
➁
➄

18
OPERATION
4.2.2 Start-Up/Priming for Pump Supplied with 4-FV
Read this entire section completely before proceeding.
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 Adjust-
ment 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 ll 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.
6. The pump is now primed.
7. Proceed to output adjustment, Section 4.3.
4.2.3 Start-Up/Priming Without 4-FV
Read this entire section completely before proceeding.
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%.
3. The suction tubing should begin to ll with solution from the tank.
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 4.3.
4.3 Output Adjustment
Once the pump has been primed, an appropriate output adjustment MUST be made.
Pump output should be calculated and adjustments made accordingly.
If the pump does
not self-prime,
remove the
discharge check
valve and pour
water or solution
into the port until
the head is filled.
Replace valve,
then follow start
up/priming steps.
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 filled.
Replace valve,
then follow start
up/priming steps.

19
OPERATION
4.3.1 Total Pump Output
Calculate the approximate output of the pump as follows:
PUMP OUTPUT = MAX PUMP OUTPUT x % SPEED x % STROKE
Example: A151-928SI
Use Max Output (from dataplate 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 out-
put 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.
4.3.2 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 re-
quired correction and repeat steps 1-7.
When converting
between different
units, remember
these conversion
factors:
1 Gallon =
3.785 Liters
1 Day =
1,440 Minutes
240 SPM =
14,400 SPH

20
OPERATION
4.3.3 Calibration in External Mode
1. Since pump output is governed by an external device such as Flowmeter-Pulser,
Liquitron™Controller, or 4-20 mA DC signal from an instrument with an LMI
Analog-to-Digital 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 vol-
ume 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 graduate 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.
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.
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.