LMI RFP Series User manual

InstructionInstruction
InstructionInstruction
Instruction ManualManual
ManualManual
Manual
Remote Flowmeter - Pulser
RFP Series
For file reference, please record the following data:
Model No:
Serial No:
Installation Date:
Installation Location:
When ordering replacement parts for your LMI Controller or accessory, please include
the complete Model Number and Serial Number of your unit.
Replaces same of Rev D 9/96
1538.D 6/97
CONTENTS
Unpacking................................................................... 2
Location ...................................................................... 2-3
Programmable Divider & Pump Calculations........ 4
Dimensions & Weights.............................................. 7
Specifications............................................................. 10
Parts List..................................................................... 11

2
INSTALLATION
TYPICAL INSTALLATION
I. UNPACKING
A. Remote Flowmeter (RFP) units are packaged in two
separate cartons. ne carton contains the Flowmeter and
10 feet of cable for direct hookup to the Remote Program-
mable Divider. The other carton contains the Remote
Programmable Divider complete with 10 feet of cable for
direct connection to an LMI metering pump.
B. Remote Flowmeter units in 3/4", 1", and 1 1/2" sizes
have a pair of union couplings and gaskets included. The
2", 3", 4" and 6" sizes have flange connections.
C. Because of test water residue, the Remote Flowmeter
should be stored in a frost-proof area. If this is not
possible, the Remote Flowmeter must be thawed prior to
installation.
II. L CATI N
A. Flowmeter
1. Remote Flowmeters should be installed in a frost-
proof, easily accessible area.
2. To prevent accumulation of air and a resultant error in
measurement, the Flowmeter should be installed on the
lowest horizontal point of the pipeline.
3. An uninterrupted run of straight pipe with a length at
least 10 times the nominal diameter of the Flowmeter
both upstream and downstream is need to ensure accurate
readings.
4. If the pipe line downstream from the Flowmeter is
open discharge, the pipe must be raised so open dis-
charge elevation is higher than the top of the Flowmeter
(see "Typical Installation" drawing below).
5. Thoroughly rinse the pipeline by opening the upstream
shut-off valve before installing the Flowmeter.
6. The Remote Programmable Divider may be located as
far as 100 feet from the Flowmeter location. Extension
cables are available. Please consult the factory if the
Remote Programmable Divider will be installed more
than 100 feet from the Flowmeter.
7. The flowmeter must be installed horizontally and
level, with the glass register positioned up (12:00 posi-
tion--see "Typical Installation" drawing).
8. For ease of installation, install a shut-off valve, with an
orifice diameter at least as large as the nominal size of the
Flowmeter. Installation of a bypass is also recommended
for easy removal or servicing of the Flowmeter without
interrupting the water flow (see "Typical Installation"
drawing).

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9. Apply Teflon tape or pipe thread sealant on tapered
pipe thread ends of the meter couplings on 3/4", 1" or
1 1/2" models.
10. Air trapped in the Flowmeter should be removed
prior to operation. To accomplish this, loosen the meter
couplings slightly (for models so equipped) and rotate
the Flowmeter slowly so that register is upside down.
pen upstream (inlet) valve slowly letting water through
the meter. Rotate Flowmeter slowly again until the
register is upright and tighten meter couplings. The
Flowmeter is now ready for cable connection to the
Remote Programmable Divider.
B. REMOTE PROGRAMMABLE DIVIDER
1. The Remote Programmable Divider may be located up
to 100 feet from the Flowmeter. The unit has molded-in 4
mounting holes that will accept 1/4" diameter screws for
wall mounting.
2. nce the Remote Programmable Divider and the
Flowmeter have been installed, connect the cable from
the Flowmeter to the programmable divider by plugging
the connector on the cable into the receptacle on the
programmable divider.
CONNECTOR INSTALLATION
C. METERING PUMP
1. Installation of your LMI metering pump should be in
accordance with instructions included with the pump.
2. Plug the connector from the programmable divider into
the receptacle located on the bottom of the pump’s
control panel.
3. To prime the pump, switch to the INTERNAL mode
and follow the PRIMING PR CEDURES on the LIQUID
END ASSEMBLY INSTRUCTI N SHEET. nce the
pump is primed, switch to the EXTERNAL mode for
meter pacing.
4. Set divider number on the programmable divider
according to instruction in the next section.
5. Check treated water for desired dosage.
6. Adjust stroke length knob until desired dosage is
obtained.
IMPORTANT:
PUMP MUST BE IN THE EXTERNAL MODE FOR
METER PACING.
REMOVING PANEL
BEFORE
POWER CORD
0
50
40
30
20
10
60
70
80
90
100
DISCONNECT
E
P
E
S
D
EMPTY
INTERNAL EXTERNAL
T
MILTON ROY
NSF
N
P
R
E
S
S
U
R
O
R
O
C
L
E
ACTON, MA 01720 U.S.A.
MILTON ROY
TURN WHILE
UNIT IS
RUNNING
STROKE
E
X
T
E
R
N
A
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P
U
T
OFF
5
10
2030
40
50 60
70
8090
100
L
TO ADJUST
LIQUID METRONICS DIVISION, ACTON, MA 01720 U.S.A.
PROGRAMMABLE
DIVIDER
PD-4
POWER SOURCE
WITH GROUND
SOLUTION INJECTION
PROGRAMMABLE
DIVIDER
METER COUPLING
FLOWMETER
LMI METER PACED
PUMP
WHITE TO PIN 1 OF CONNECTOR
BROWN TO PIN 2 OF CONNECTOR
GREEN TO PIN 3 OF CONNECTOR

4
III. PR GRAMMABLE DIVIDER AND PUMP CALCULATI NS
The following information is provided to enable you to understand the calculations necessary to properly adjust your
RFP flowmeter. In the steps below you will calculate:
A - Required pump output
B - Maximum output of metering pump
C - Percent output required from pump
D - Stroke knob setting on pump (strokes per minute)
E - Divider number
1. DETERMINE METERING PUMP OUTPUT GPH*)
• Be sure the metering pump selected is an LMI A7, B7 or C7 type pump. These pumps are equipped with an external
input jack for use with RFP flowmeters.
• When using the A7, B7 or C7 pump with an RFP flowmeter, the speed control knob function is bypassed and taken
over by the divider unit. The speed of the pump is controlled automatically, based on the flow of the water through the
flowmeter. n the LMI A7 pump external mode is accomplished by turning the speed knob fully counter clockwise. n
B7 and C7 pumps, a switch is provided to place the pump in the external mode.
• Be sure the pump's pressure rating exceeds the system pressure by a minimum of 20%. For example, if system
pressure equals 100 psi, the pump rating should be 120 psi or greater.
• Use this calculation to determine output in gallons per hour (GPH*).
Example Results: Select an A77 pump with .42 GPH* max. output at 140 psi. (Use the pump selection
guide.)
Example A:
X
70 (GPM*) 4 (PPM*)
5.25 (% solution expressed as a whole number) =53.33 X.006 =.32
Percent concentration of pumping solution
(expressed as a whole number)
Desired concentration
(in PPM*)=X.006 =(Required pump
output in GPH*)
X
Max. flowrate of water through
flowmeter (in GPM*) (A)
(A)
(B)

5
Required
pump output from
Max output of metering
pump selected (in GPH*)
=(percent output required from the pump)
.32
.42
(A)
(B)
=.76 (Percent output required from pump)
(C)
(B)
Check the size of the flowmeter selected based on:
• The required pipe size or mounting flange.
• The maximum and minimum flowrate of the flowmeter.
4. FLOWMETER SPECIFICATIONS
Example Result: Set stroke knob to 87%
.76 =.87
Square Root of (Stroke knob setting on pump and
strokes per minute in step 5)
(C)
Example C:
=
Square Root of
Percent output
desired from
pump (C)
3. DETERMINE THE STROKE SETTING
Model Pipe Flow-GPM* Flow-LPM* Primary Pulses Primary Pulse
Size MIN MAX MIN MAX per U.S Gallon per Liter
RFP-07 3/4" 0.44 20 1.7 76 62.7 16.6
RFP-10 1" 0.8 50 3.0 189 34 9
RFP-15 1-1/2" 1.4 85 5.3 322 13.3 3.5
RFP-20 2" 1.75 130 6.6 492 13.3 3.5
RFP-30 3" 5 350 18.9 1325 7.7 2
RFP-40 4" 5 650 18.9 2460 4.8 1.3
RFP-60 6" 9 1300 34.1 4921 1 0.3
Example B:
2. DETERMINE PERCENT OUTPUT REQUIRED FROM PUMP
(C)
(A)
(Stroke knob setting on pump and
strokes per minute in step 5)
(D)
(D)

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Example D:
5. DETERMINE DIVIDER NUMBER
NOTE:
If an LMI D7 metering pump is being used, multiply value (D) by 75% to determine correct Divider Number.
*GPM= allons per Minute *GPH= allons per hour *LPM=Liters per minute *PPM=Parts per million
*PPPUSG=Primary pulses per U.S allon
NOTES:
• To make small increases or decreases in output, adjust the stroke knob.
• Increasing the divider box number will decrease the pump speed (strokes per minute).
• Decreasing the divider box number will increase the pump speed (strokes per minute).
• Dilute pumping solutions when low PPM concentrations are required. This will allow you to increase the pump
speed (strokes per minute).
6. SET THE DIVIDER NUMBER
A. Remove the clear window on the programmable divider by removing the two black thumb screws.
B. Set thumbwheel numbers to divider number determined above.
Example:
Using the divider number determined in the previous example (divider number = 0011), you would set the
thumbwheels as illustrated below:
C. Replace the clear window to activate divider.
IMPORTANT:
DIVIDER WILL NOT OPERATE UNLESS CLEAR WINDOW IS IN PLACE.
Example Result:
Round off the divider number to read
(E)
0011 on the divider unit. The resulting divider number will cause the
pump to run at 87 strokes per minute at the maximum flowrate of water through the flowmeter.
X
87 (D)
13.3 (PPPUSG*)
70 (GPM*)=
(E)
10.7 Divide number
(round off to nearest
whole number)
Primary pulses per
U.S. gallon (from chart)
Max. flowrate of water through
flowmeter (in GPM*) X
Strokes per minute of pump
(expressed as a whole number)
=
(D) Divide number
(E)
0 0 1 1

7
Model No. RFP-07 RFP-10 RFP-15 RFP-20 RFP-30 RFP-40 RFP-60
Nominal Size in 3/4 1 1-1/2 2)3)4)6)
mm 20)25)40)50)75)100)150)
in 7.5)10.25)11.81)10.62)12)14)18)
Lmm190)260)300)270)305)356)457)
in 11.34)14.87)17.25)----
L1 mm 288)378)438)----
in 5.35)5.79)6.34)8.6)8.440)9.370)12.560)
Hmm136)147)161)218)214)240)319)
in 1.61)1.75)1.81)3.27)3.87)4.62)6)
hmm41)44)46)83)99)117)152)
in 1)1.25)2)6.5)7.5)9)18)
Dmm---165)190)228)457)
in - - - 4.75)6)7.5)9.5)
BC mm ---121)152)190)241)
Bolt in - - - 5/8 3/4 3/4 3/4
Size mm ---16)19)19)19)
No. of Bolts ---4)4)8)8)
Net lbs 4.6)6.8)13.0)25.8)42)68)135)
Weight kg 2.1)3.1)5.9)11.7)19.1)30.8)61.2)
DIMENSIONS & WEIGHTS

8
RFP-07, RFP-10, RFP-15
RFP-20

9
RFP-30
RFP-40 RFP-60

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REMOTE PROGRAMMABLE DIVIDER - ALL MODELS
RFP-07, RFP-10, RFP-15, RFP-20
TYPE: Multi-jet Impeller Meter
BODY: Bronze
REGISTER: Straight reading US Gallons, protected by high impact resistant plastic, permanently hermetically sealed .
7 digit totalizer on RFP-07 and RFP-10
8 digit totalizer on RFP-15, RFP-20
SERVICE TEMPERATURE: 32 to 120 F (0 to 50 C).
MAXIMUM OPERATING PRESSURE: 200 psi (13.8 Bar)
RFP-30, RFP-40, RFP-60
TYPE: Magnetic Drive Turbine Meter
BODY: Bronze
REGISTER: Straight reading US Gallons, center sweep hand, protected by high impact resistant plastic, permanently hermetically
sealed between a glass dome and metal housing.
8 digit totalizer
SERVICE TEMPERATURE: 32 to 130 F (0 to 55 C)
MAXIMUM OPERATING PRESSURE: 150 psi (10.3 Bar)
RFP meters comply with or exceed all AWWA Class I Turbine meter performance standards.
SPECIFICATIONS

11
PARTS LIST
Quantity per AssemblyQuantity per Assembly
Quantity per AssemblyQuantity per Assembly
Quantity per Assembly Program.Program.
Program.Program.
Program.
PartPart
PartPart
Part DividerDivider
DividerDivider
Divider
No.No.
No.No.
No. DescriptionDescription
DescriptionDescription
Description RFP-07RFP-07
RFP-07RFP-07
RFP-07 RFP-10RFP-10
RFP-10RFP-10
RFP-10 RFP-15RFP-15
RFP-15RFP-15
RFP-15 RFP-20RFP-20
RFP-20RFP-20
RFP-20 RFP-30RFP-30
RFP-30RFP-30
RFP-30 RFP-40RFP-40
RFP-40RFP-40
RFP-40 RFP-60RFP-60
RFP-60RFP-60
RFP-60 All ModelsAll Models
All ModelsAll Models
All Models
31271)Remote Programmable Divider Asm. 1)11)11)11)
31135)Housing 1
26740)Gasket Asm. 1
31277)Connector Asm. 1
31278)Cable Asm. 1
30990 Divider Asm. 1
26314)Switch 1
26490)Thumb Screw 3
28707)Screw, Self Tapping 4
10678)Screw, PH SS 4
31272)Panel Asm. 1
31256)Standoff 4
31110 Nameplate 1
28793 WireAsm. 1
31374)Sensor Asm. w/ 8 Pin Cable 1)11)1
31408)Sensor Asm. w/ 8 Pin Cable 1)
31409)Sensor Asm. w/ 8 Pin Cable 1
31410)Sensor Asm. w/ 8 Pin Cable 1)
31670)Register Asm. 1)
31671)Register Asm. 1
31672)Register Asm. 1)1
26605)Register Asm. 1)
26606)Register Asm. 1
31696)Register Asm. 1)
31673)Turbine Asm. 1)
31674)Turbine Asm. 1
31675)Turbine Asm. 1)
31676)Turbine Asm. 1
31431 Coupling Gasket (Mylar) 1
31434 Coupling Gasket (Mylar) 1
31437 Coupling Gasket (Mylar) 1

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© 1996 LMI Milton Roy - All Rights Reserved
Printed in USA
Specifications subject to change without notice