LMI ROYTRONIC EXCEL AD2 User manual

Lit# 2024.C 10/2011
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
ROYTRONIC EXCEL™ Series AD
Electronic Metering Pumps

Liquid End
*VU[YVS*VKL
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
5 – 220-240V UK Plug
6 – 220-240V Aust/NZ Plug
7 – 220-240V Swiss Plug
8 – 110-120V No Plug
6 – High Viscosity Head
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 AD 2 5 1 - 8 3 8 S I
Model Code Configuration
Drive
Not all configurations are available. Please see your local
distributor or price list for available options.
(SS 1/4” NPT)
AD2 - Dual Manual Control – Digital:
Stroke frequency and length manually adjustable with digital LCD
display, low level indication (remote input). Display configurable to
indicate calculated pump flow.
AD8 - Pulse/Analog Input w/ Dual Manual Control – Digital:
Pulse or 4-20 mA signal input controls frequency, digital LCD display,
manual stroke length control, frequency manually adjustable when in
local control, pulse multiply/divide functions, 24 V output for remote
device. Includes dual low level float switch input. Display configurable
to indicate calculated pump flow.
AD9 - Pulse/Analog Input w/Dual Manual Control &
Enhanced Controls – Digital:
Advanced Features - Pulse or 4/20 mA signal input controls
frequency, Digital graphical display, manual stroke length control,
Frequency manually adjustable when in local control, Pulse
multiply/divide functions, 24 V output for remote device, dual
low level float switch input, Remote on/off signal input. Outputs
include: 4-20 mA, pulse, & Alarm. Remote internal/external mode input.
6\[W\[:PaL*VKL
=VS[HNL*VKL
3PX\PK,UK*VKL
3PX\PMYHT;4:PaL*VKL
4H[LYPHS*VKL
/LHK=HS]L*VKL
*VUULJ[PVU*VKL
*Note:
V – High Viscosity Head
P – High Viscosity w/Ported Head
ROYTRONIC EXCEL™ Series AD

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 ...............................................18
4.2.1 Start-Up/Priming for FastPrime™Heads (LE-XXXNX).........................18
4.2.2 Start-Up/Priming for Pump Supplied with 4-FV (LE-XXXSX or LE-XXXHX)........18
4.2.3 Start-Up/Priming for AutoPrime™Heads (LE-XXXAX or LE-XXXHX) .............19
4.3 Output Adjustment....................................................19
4.3.1 Total Pump Output ...................................................19
4.3.2 Calibrating the Displayed Flow (AD2, AD8).................................20
4.4 Methods of Externally Triggering or Pacing AD8 and AD9 Pumps ...............21
4.4.1 Control Modes.......................................................22
4.4.1.1 Local/Internal Mode ..................................................22
4.4.1.2 Changing Displayed Flow Units (AD2, AD8) ................................22
4.4.1.3 Remote Mode (for AD8) ...............................................22
4.4.1.3.1 Divide Mode (for AD8).................................................22
4.4.1.3.2 Multiply Mode (for AD8)................................................22
4.4.1.3.3 Analog Mode (for AD8) ................................................22
5.0 Spare Parts Replacement and Routine Maintenance.................................23
5.1 Depressurizing the Discharge Line (for Pumps Equipped with a 4-FV Only) .......23
5.2 Depressurizing The Discharge Line (for Single Ball FastPrime™Heads Only) ......23
5.3 Liquifram™(Diaphragm) Replacement ....................................24
5.4 Cartridge Valve and O-Ring Replacement .................................25
5.5 Injection Check Valve Parts Replacement..................................26
5.6 FastPrime™Valve O-Ring Replacement ...................................27
5.7 Drive Parts List ......................................................29
5.8 EPU Wiring Diagram ..................................................30
5.9 Liquid End Parts .....................................................31
6.0 Wiring Diagrams .............................................................35
7.0 Troubleshooting..............................................................38

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, o-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 to NSF 50 for use on muriatic acid (40%) and sodium hypochlorite (12.5%).
The pumps are certied to NSF 61 with: sodium hypochlorite (12.5%), sulfuric acid
(98.5%), sodium hydroxide (50%), and hydrochloric acid (30%). Determine if the materi-
als of construction included in the liquid handling portion of your pump are adequate
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.
Most 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, except for the head’s discharge port, 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.

5
PRECAUTIONS
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 overpumping 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.
Fuse (all models) and Battery (AD9 only)
Caution, Battery may explode if mistreated. Do not recharge, disassemble or dispose of in re.
The battery and fuse are internal, factory serviceable parts, and must be replaced by the factory
or a qualied distributor with parts of the same type and rating.
Flooding
WARNING: Install this pump in a location where ooding cannot occur.
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 op-
eration 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.
Flow Display
The default ow value as shown on the pump display is accurate at maximum pressure and 100%
stroke length. If your operating conditions differ from this, then calibration is necessary in order
to display an accurate measure of the ow.

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.
2.1 Specications
AD2XY
(where X is any number;
where Y is 1, or 8)
AD2XY
(where X is any number;
where Y is 2,3,4,5,6,7, or 9)
AD8XY, or AD9XY
(where X is any number;
where Y is any number)
Operating
Temperature
14 to 113°F
–10 to 45°C
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 95 to 240 V
Frequency 50 to 60 Hz 50 to 60 Hz 50 to 60 Hz
Max. Current 2.0 A 1.0 A 1.4 A
Wattage 25 W 22 W 20 W
AD2 AD8 AD9
Battery N/A N/A
Panasonic BR1225 or
Renata CR1225 or
Energizer/Eveready
CR1220
Fuse Bel Fuse 5HT1.25-R
Time-lag, 5mm x 20mm
Bel Fuse 5HT 2-R
Time-lag, 5mm x 20mm
Bel Fuse 5H 2-R
Time-lag, 5mm x 20mm
*The battery and fuse are internal, factory serviceable parts, and must be replaced by the factory or a qualied
distributor with parts of the same type and rating.

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)
External Control Cable
(0, 1, or 2 Cables)
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 LMI 10-gallon tank (part no. 27421), 35-gallon tank
(part no. 27400), and 50-gallon tank (part no. 26350).
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).

10
INSTALLATION
3.3 Tubing Connections
   
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 1).
2b. For 3/8” or 1/2” OD tubing: Position a Female Ferrule about one inch (25 mm) from end of tubing. Orient the



  
to break.
A.


 DO NOT USE CLEAR VINYL TUBING ON THE DISCHARGE SIDE OF THE PUMP. The pressure created



discard these caps or plugs before connecting tubing.
DO NOT USE PLIERS OR PIPE WRENCH ON COUPLING NUTS OR FITTINGS.
DO NOT REUSE FERRULES—USE ONLY NEW FERRULES.
(5-10 mm)
1/4" - 3/8"
1/4" O.D. or
3x6mm
Tubing
Ferrule-
Female
Coupling Nut
Fitting
O-Ring
3/8" O.D. or
6x8mm
Tubing
1/2" O.D. or
9x12mm
Tubing
Ferrule-
Female
Coupling Nut
Fitting
O-Ring
Ferrule-
Male
FIGURE 1 FIGURE 2
Replacement Ferrules,
and Coupling Nuts
are available as
the following kit
numbers:
¼” Tube – 77382
3⁄8” Tube – 77383
½” Tube – 77384
3 x 6 mm Tube – 77378
6 x 8 mm Tube – 77379
9 x 12 mm Tube – 77380
One kit is needed
for each end of
the tube.

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 20 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, insert the large opening
on the Four-Function Valve Body into the 4-FV Coupling Nut and
hand tighten. You can position the valve to have the Bleed Nut
pressure relief port in any convenient location by tightening the
4-FV Coupling Nut with the Bleed Nut positioned 90º CCW from
desired location, then holding the 4-FV Coupling Nut stationery
while turning the 4-FV Valve Body the nal 90º to desired position.
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
FastPrimeTM Valve
FastPrime™ Head
3/8" Clear Vinyl Tubing

13
INSTALLATION
3.7 AutoPrime™
Pumps installed with the AutoPrime™ Liquid End are 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.
Discharge
Valve
AutoPrime
TM
Valve
Suction
Valve
Return
to Supply
Discharge
Inlet
AutoPrime™ Liquid End Example

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
female NPT tting or pipe tee with a reducing bushing to 1/2" female NPT will accept
the injection check valve. PTFE 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 Installation

16
OPERATION
4.0 Operation
4.1 Output Adjustment Controls
1. Power Button: This button allows convenient starting and stopping of
the pump.
2. Mode Selection Button: For pumps with external control capability (AD8,
AD9) this button switches pump operation between internal and external
modes. When operating in internal mode the Pulse Indicator Light will ash
green while pumping. When operating in external mode the Pulse Indicator
Light will ash yellow while pumping.
3. Down Button: This button reduces the stroke speed of the pump. It will
reduce the stroke speed by 1 each time it is pressed. If this button is held
down, it will rapidly reduce the stroke speed. When a speed of 1 stroke per
minute (SPM) is reached the speed can be further reduced by pressing this
button again to enter stroke per hour settings.
4. Up Button: This button increases the stroke speed of the pump. It will
increase the stroke speed by 1 each time it is pressed. If this button is held
down, it will rapidly increase the stroke speed. When a speed of 59 strokes
per hour (SPH) is reached the speed can be further increased by pressing this
button again to enter stroke per minute settings.
5. LCD Display: This display will show the stroke speed of the pump. Pumps
with theoretical (AD2, AD8, AD9) or actual (AD9 when combined with a
ow meter) ow will display the ow here.
6. Stroke Adjustment Knob: This knob provides adjustment of the stroke length.
Turning this knob clockwise 3increases 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%.
7. 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.
8. Low-Level Indicator Light: For units with Single-Level Float Sensors this
light will turn red when the Low-Level Sensor registers empty. This will turn
the pump off. For units compatible with Dual-Level Sensors (AD8, AD9) the
light will turn yellow when a low level is registered, and red when an empty
level is registered. The pump will turn off when it registers an empty level.
9. Output, Alarm, & Remote Mode Connector (6-Pin): This connector is used
for the special functions associated with the AD9 controls. For the AD9
this connector is associated with the 4-20ma out, Alarm Out, and Internal/
External remote modes.
1. Alarm Out (Red/White) – Programmed as either an Alarm Output or
Internal/External mode indicator. As an Alarm Output, pins 1 and 2 will
give a closure (solid state) triggered by: empty tank indication, input pulse
error, exceed batch error, or ow switch activation. For remote mode
indication it is open for internal mode and closed for external.
2. Alarm Return (Red) – Return side for the above pin 1 Alarm Out.
3. Remote Internal/External Mode (AD9) (Green) – This pin is programmed
as Internal/External remote mode control for an AD9. If programmed as
the Internal/External control, a closure will put the AD9 into external
mode.

17
OPERATION
4. Pulse Out (AD9) (Red/Yellow) – On the AD9 this pin gives a100ms
pulse output for each pump stroke.
5. 4-20mA Out (AD9) (Red/Black) – On the AD9 this pin is the positive
4-20ma output. This output will show you 4ma when the pump is idle,
20ma at max stroke speed.
6. Ground/Return Connection (Red/Blue)– Common Ground
10. External Control Connector (5-Pin): This connector is for the connec-
tion of various options and accessories that can be used to externality
control the pump. The pin functions (and the wire color for the standard
LMI external control cable) are as follows:
1. Remote On/Off Signal (Brown)
2. Ground/Return Connection (White)
3. External Pulse Signal (Blue)
4. 24V 75 mA* Power Supply (Black)
5. 4-20mA Input Signal (Green/Yellow)
11. Low-Level Connector (3-Pin): This connector is for the connection of
a Low-Level Sensor (49246) or a Dual-Level Sensor (49249). The Tank
Empty input connections are always active for all models in all func-
tional modes. The Tank Low input connections are always active for
models equipped with dual level functionality (AD8, AD9). If the uid
level drops below the top oat on a Dual-Level Sensor, the Low-Level
Indicator Light will turn yellow. If the uid level drops below the oat
on a Low-Level Sensor, or the bottom oat on a Dual-Level Sensor,
the Low-Level Indicator Light will turn red, and the pump will stop.
The pump is designed to recognize an open circuit as full and a closed
circuit as low or empty. There is a ve second delay between triggering
the sensor, and the pump’s reaction. This is intended to avoid trigger-
ing during relling your supply tank. The pin functions are as follows:
1. Tank Empty Signal
3. Tank Low Signal
4. Ground/Return Connection
12. Flow Monitor/Meter Connector (4-Pin): This connector will be used
with a Milton Roy ow meter or the Milton Roy Digpulse ow monitor
(FM-ROY-9). The pin functions are as follows:
1. Flow Meter In – A closure between this pin and ground registers a
pulse for the ow meter/monitor.
2. 24 Volt 75 mA* Supply – Supply voltage for a Milton Roy ow meter.
3. Ground/Return Connection – Common ground
4. Flow Meter Sense – The condition of this pin will set the pump into
the Digipulse or Flow Meter mode. This will automatically occur
with the Milton Roy device is connected. A connection to ground
indicates the use of a ow meter, while an open circuit indicates a
ow monitor.
*The total current output of the 5-pin and 4-pin connectors should not exceed 75 mA.

18
OPERATION
4.2 Start-up and Adjustment
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4.2.1 Start-Up/Priming for FastPrime™ Heads (LE-XXXNX)
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 4.
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 3until hand tight and SHUT THE
PUMP OFF.
6. The pump is now primed.
7. Proceed to output adjustment, Section 4.3.
4.2.2 Start-Up/Priming for Pump Supplied with 4-FV (LE-XXXSX or LE-XXXHX)
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.
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.
If the pump does
not self-prime,
remove the fitting
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
4.2.3 Start-Up/Priming for AutoPrime™ Heads (LE-XXXAX or LE-XXXHX)
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 as the AutoPrime™
valve purges air from the pump head.
4. Once the solution begins to exit the pump head through both the discharge valve and
the AutoPrime™ valve, 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.
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: AD251-938SI
Use Max Output (from dataplate on side of pump) = 1 GPH (1 gallon per hour).
If the pump is set at 60 strokes per minute (out of a possible 120 SPM) and 70% stroke
length, the approximate pump out-put is:
1.0 x 60 x 0.70 = 0.35 GPH.
120
Multiply by 24 (hours in one day) to calculate in gallons per day.
It is important to note that this is only an approximate output and it does not account for
tolerance variations in pump components or ow variations due to pressure sensitivity, or
viscosity effects. Variations due to these effects can be signicant, necessitating
calibration for your pump.
When converting
between different
units, remember
these conversion
factors:
1 Gallon =
3.785 Liters
1 Day =
1,440 Minutes
120 SPM =
7,200 SPH

20
OPERATION
4.3.2 Calibrating the Displayed Flow (AD2, AD8)
The Roytronic Excel Pumps are equipped to display a theoretical ow rate based upon
the pump’s stroke speed and stroke length. These calculations are based upon factory
test conditions which may be signicantly different from your application. It is necessary
for the user to perform the following calibration procedure when the pump is connected
to your system, and using the actual chemical. This one-point calibration procedure will
greatly improve the accuracy of the pump’s calculated ow. The closer the pump’s stroke
length is to the typical use stroke length, the more accurate the result. We recommend
using the approximate settings determined in section 4.3.1 as a starting point for
calibration.
1. Prepare a ow measuring device such as a graduated cylinder or a scale sensitive to
a gram.
2. Ensure the pump is primed following the procedures in 4.2.
3. Put the pump into Internal Mode and use the Power Button to turn the pump
off.
4. Hold the Up Button and Down Button in at the same time for 8 seconds until
‘CAL’ is displayed on the LCD Display, then release the buttons. Note ‘FLO’ will
be displayed rst. Continue to press the buttons until ‘CAL’ is displayed.
5. Push the Power Button and release until a “0” is displayed.
6. Note the reading on the calibration device. If using a graduated cylinder note the
starting liquid level. If using a scale note the displayed weight, or reset the scale’s
display to zero.
7. Push the Power Button and release to start the pump. Notice that the display will
count the total number of strokes. (The screen will show SPH).
8. Allow the pump to run; the accuracy will improve with more strokes. Use the Power
Button to stop the pump. The number of strokes will be displayed up to 999
strokes. If you will be pacing the pump externally, note the number of strokes.
9. Press and release the Power Button again. This will display the pump’s estimated
volume pumped in mL. (The screen will show ml/h).
10. Use the Up and Down Buttons to match the displayed volume to the measured
volume. If using a graduated cylinder, the presence of the tubing will cause the
measurement to be slightly higher than actual. The measurement should be adjusted
using the formulas shown below. If using a scale, the number of grams can be divided
by the specic gravity of your chemical to determine the number of mL pumped. If
the pump will be controlled externally, the output volume per stroke can be determined
by dividing the measured output by the number of strokes.
11. Once the displayed value has been adjusted, hold and release the Power Button
to return the pump to internal mode.
where
For accuracy, it is important that the water level does not drop below the top of the
ceramic foot valve weight.
Note: If you will be using the pump at a different stroke length, or pressure, the pump
should be recalibrated under those conditions using the procedure above to ensure
accuracy.