LMI
Electronic Metering Pumps
Basic Pump Operation
Pump Selection
LMI
Metering
Pumps
Maintenance
Set-up
and Installation
Basic Pump Operation
•Discharge Stroke
•Suction Stroke
•Controls
•Advantages
Discharge Stroke
• Coil is energized,
becoming magnetic
• Armature and
shaft are pulled
towards liquid end
• Liquifram™
(attached to shaft)
is pushed into head
During the discharge stroke,
the suction balls seats,
preventing solution from going
back to the solution tank. The
solution is forced through the
discharge valve.
Suction Stroke
• Coil is deenergized
• Springs return
the armature
and shaft
• Liquifram™ is
pulled back,
creating vacuum
During the suction stroke, a
vacuum is created.
The head cavity fills as the
Liquifram returns.
The suction ball rises while the
discharge ball seats.
Controls
Pressure
control
Speed Knob
Stroke Length
Control Knob
Power
Cord
4-Pin Input
Jack
Advantages
of Electronic Pumps
• No rotating motor and cam
• Only one, permanently lubricated,
moving part
• Totally enclosed, chemically
resistant
• Easy and inexpensive to externally
control
Pump Selection
• Numbering System
• Drive
• Liquid End
Numbering System
LMI Pump model numbers consist of
two main components:
AA941 - 358TI
Drive
Liquid End
The Drive
AA 9 4 1
The Series
Control Code
Output Code
Voltage code
The Series: AA141
AA Series: 2 GPH, 250 PSI (7.6 l/h, 17.3 bar)
B Series: 7 GPH, 150 PSI (26.5 l/h, 10.3 bar)
C Series: 25 GPH, 300 PSI (95 l/h, 20.7 bar)
E7 Series: 20 GPH, 300 PSI (76 l/h, 20.7 bar)
P Series: 2 GPH, 250 PSI (7.6 l/h, 17.3 bar)
G Series: 300 GPH, 175 PSI (1136 l/h, 12 bar)
HH Series: 0.14 GPH, 1000 PSI (0.5 l/h, 70 bar)
J5 Series: 2GPH, 140 PSI ( 7.6 l/h, 9.7 bar)
Note: Pumps within a series operate at maximum pressure
or maximum output. The higher the output, the
lower the pressure capabilities within each series.
Control Codes: AA141
• Control code 0
– Manual stroke length control, fixed speed
• Control code 1
– Manual stroke length and speed control
• Control code 7
– Manual stroke length & speed control with external
control option
• Control code 9
– Microprocessor control with LCD; external control
by milliAmp or digital ( pulse) input
Series AA7/B7/C7/P7
•
•
•
•
•
MP-100
MP-400D
MP-500M
Pulse Transmitter
RFP Remote
Flowmeter Pulser
• FC Flowmeter
Contactor
Methods of Triggering
Series AA9/B9/C9/H9
• 4-20 mA DC
• High frequency
pulses
• Low frequency
pulses
• Pulse Transmitter
• RFP Flowmeter
• FC Flowmeter
Methods of Triggering
Series E7:
Note:
Accessories
are NOT
explosion
proof
Methods of Triggering
Explosion Proof
•
•
•
•
•
MP-100
MP-400D
MP-500M
Pulse transmitter
RFP Remote
Flowmeter Pulser
• FC Flowmeter
Contactor
Output Codes: AA141
The output code determines output
and pressure capability within a
pump series. Select the proper
output code using the LMI Pump
Selection Guide.
Voltage Codes: AA141
Voltage code 1 = 120 VAC U.S. Plug
Voltage code 2 = 240 VAC U.S. Plug
Voltage code 3 = 220-240 VAC DIN Plug
Voltage code 5 = 240-250 VAC UK Plug
Voltage code 6 = 240-250 Aust/NZ Plug
Voltage code 7 = 220 VAC Swiss Plug
Liquid End
• Select a liquid end compatible with
the pump drive using the Pump
Selection Guide.
• Use the Chemical Resistance Chart
to select a suitable liquid end
material.
Liquid End
3 5 8 T I
LiquiPro™ Series
Head/tubing size
Materials
Valve code
Tubing code
LiquiPro™ Series:
358TI
3 = Molded
4 = Machined
Advantages
• Cartridge valve systems eliminates distortion of seal
rings due to overtightening
• Better volumetric efficiency
• Superior priming performance
• Better seal to prevent leaks
Head/Tubing Size: 358TI
• 5 = 0.5
• 9 = 0.9
• 6 = 1.8
• 1 = 3.0
Materials:
358TI
• 8 = PVC
• 0 = Acrylic
• 2 = PVDF / PolyprelTM
• 3 = PDVF / PTFE
Valve Code:
358TI
• T = Three Function Valve (3FV)
• S = Four Function Valve (4FV)
• N = No Accessory Valve,
Fitting Only
• H = AutoPrime (AV) + Four
Function Valve (4FV)
Set-up and Installation
• Box Contents
• Installation Tips
• Priming
• Calibration
Box Contents
• Pump
• 16 feet (5m) of tubing
• Foot valve
• Injection check valve
• Discharge valve
(4FV, B4FV, 3FV, 4FV+AV or straight fitting)
• Instruction manuals
• Ceramic weight
Pre-Installation
Precautions
• Always wear protective clothing
• Pump is pre-primed with water
• Verify solution compatibility
• Do not reduce tubing connection
• Do not use Teflon® tape
• Adhere to local plumbing & electrical codes
• Use grounded receptacle
Suction Lift
• Injection check valve
should be vertical
(pointing up)
• Foot valve must be
vertical
• Suction tubing should
be straight; no curves
or bends
• Maximum suction lift
5 feet (1.5m)
Flooded Suction
• True vs. false flooded suction
• Day tanks-safety issues
• Back pressure valves
Determining
Pump Output
• Determine required pump output
• Determine percent of pump output
• Determine stroke and speed settings
Calculating
Required Output
Desired PPM x GPM of Flow
% Concentration of Chemical
=
x
.006
Required Pump Output in GPH
Calculating
Output Percentage
Required Pump Output
Maximum Output of Pump
= % Output Required from Pump
Calculating
% Speed / % Stroke
% Output Required from Pump
=
% Speed and % Stroke
Priming
LMI pumps are pre-primed with
water to assist in priming:
• Output adjustment= 80% speed,
100% stroke
• Vent pump to atmosphere via
3FV or 4FV
• Vent tubing to supply tank
Calibration
LMI Pumps should be calibrated
during installation or whenever the
output is adjusted
• Verify that the pump is primed
• Use a graduated cylinder on
suction side of pump
• Run 60 second test
• Adjust pump as necessary
Maintenance
• RPM Pro Pac™ Kits
• Liquifram™ Replacement
Preventative
Maintenance
Spare parts should
be replaced annually including:
• Cartridge valves
(balls/seal rings)
• Liquifram™
• Clamp rings
• Ferrules
• Head screws
• Shaft seal
RPM Pro Pac™ Kits
• Liquifram™
• Cartridge valves
• Clamp rings / Ferrules
• Head Screws
• Instructions
• Shaft seal