McCrometer Water Specialties OF12D User manual

30119-24 Rev. 10.9/07-09
1
10”-72”
ELECTRONIC
OPEN FLOW METERS
MODEL OF12D
OPERATION AND MAINTENANCE MANUAL
PARTS LIST
FEATURING:
*MODEL FC101 FLOWCOM REGISTER INDICATOR-TOTALIZER
*CERAMIC BEARING CARTRIDGE PROPELLER
*ONE PIECE SEPARATOR/SPINDLE AND THREADED REVERSE THRUST BEARING CARTRIDGE
3255 WEST STETSON AVENUE
HEMET, CALIFORNIA 92545 U.S.A.
PHONE:
FAX:
VISIT OUR WEBSITE:
951-652-6811
951-652-3078
www.mccrometer.com

30119-24 Rev. 10.9/07-09
2
Copyright © 2000-2007 McCrometer. All printed material should not be changed or altered without permission of McCrometer. The published technical data and instructions are subject to change
without notice. Contact your McCrometer representative for current technical data and instructions.
WARRANTY
This Warranty shall apply to and be limited to the original purchaser consumer of any McCrom-
eter product. Meters or instruments defective because of faulty material or workmanship will
be repaired or replaced, at the option of McCrometer, free of charge, FOB the factory in Hemet,
California, within a period of one (1) year from the date of delivery.
Repairs or modifications by others than McCrometer or their authorized representatives shall
render this Warranty null and void in the event that factory examination reveals that such repair
or modification was detrimental to the meter or instrument. Any deviations from the factory
calibration require notification in writing to McCrometer of such recalibrations or this Warranty
shall be voided.
In case of a claim under this Warranty, the claimant is instructed to contact McCrometer, 3255
W. Stetson Ave., Hemet, California 92545, and to provide an identification or description of the
meter or instrument, the date of delivery, and the nature of the problem.
The Warranty provided above is the only Warranty made by McCrometer with respect to its
products or any parts thereof and is made expressly in lieu of any other warranties, by course of
dealing, usages of trade or otherwise, expressed or implied, including but not limited to any implied
warranties of fitness for any particular purpose or of merchantability under the uniform commer-
cial code. It is agreed this Warranty is in lieu of and buyer hereby waives all other warranties,
guarantees or liabilities arising by law or otherwise. Seller shall not incur any other obligations
or liabilities or be liable to buyer, or any customer of buyer for any anticipated or lost profits,
incidental or consequential damages, or any other losses or expenses incurred by reason of the
purchase, installation, repair, use or misuse by buyer or third parties of its products (including
any parts repaired or replaced); and seller does not authorize any person to assume for seller any
other liability in connection with the products or parts thereof. This Warranty cannot be extended,
altered or varied except by a written instrument signed by seller and buyer.
This Warranty gives you specific legal rights, and you may also have other rights which vary from
state to state.
McCrometer reserves the right to make improvements and repairs on product components which
are beyond the Warranty period at the manufacturer’s option and expense, without obligation to
renew the expired Warranty on the components or on the entire unit. Due to the rapid advancement
of meter design technology, McCrometer reserves the right to make improvements in design and
material without prior notice to the trade.
All sales and all agreements in relation to sales shall be deemed made at the manufacturer’s
place of business in Hemet, California and any dispute arising from any sale or agreement shall
be interpreted under the laws of the State of California.

30119-24 Rev. 10.9/07-09
3
OPEN FLOW METER INDEX
I. UNCRATING
II. INSTALLATION
1. Straightening Vanes
2. Mark
3. Measure
4. Bracket Separation
5. Attach
6. Meter
7. Propeller Position
8. Padlock
III. METER SERVICE SCHEDULE
IV. METER ASSEMBLY
V. WORKING AREA
VI. DISASSEMBLY AND INSPECTION
1. Propeller Removal
2. Reverse Thrust Bearing Cartridge
3. Water Lubrication
4. Ceramic Bearing Cartridge
5. Spindle Ceramic Sleeve
6. Separator/Support Assembly
VII. REASSEMBLING METER
1. Propeller Installation
2. Thrust Bearing Cartridge Assembly
3. Propeller Bearing
VIII. SENSOR AND FC101 DIGITAL INDICATOR-TO-
TALIZER
1. FC101 Digital Indicator
2. FC101
3. Sensor Housing
4. Replacing Sensor Housing
5. Inspect O-ring
6. Lithium Battery
7. FC101 Digital Indicator-Totalizer
IX. PREPARATION PRIOR TO INSTALLING METER
1. Propeller Assembly
2. FC101
3. Meter Assembly
X. ORDERING PARTS OR RETURN TO FACTORY
MAIN LINE METER INSTALLATION
I. UNCRATING. When uncrating the meter, any damage
due to rough or improper handling should be reported
to the transportation firm and McCrometer. If, for any
reason, it is determined that the unit or parts of the
unit should be returned to the factory, please contact
McCrometer for clearance prior to shipment. Each unit
must be properly crated to prevent any further damage.
The factory assumes no responsibility for equipment
damage in return shipment due to improper packaging.
The shipping crate contains the following items:
Open Flow Meter Assembly with
FC101 ..................................................................1
Mounting Equipment as required ...........................-
Operation and Maintenance Manual .....................1
Tool T-2402X-1....................................................1
II. INSTALLATION of McCrometer Open Flow Meters can
be made to any wall or vertical structure which will
center the propeller in the flow measuring area. The
meter must have a controlled flow measuring area and
a full flow of liquid for proper accuracy. Installation
is made in the following manner:
1. STRAIGHTENING VANES are normally not
required in open flow installations. Fully opened gate
valves, fittings, or other obstructions that tend to set
up flow disturbances should be a minimum of ten pipe
diameters upstream from the meter location. Instal-
lations with less than ten pipe diameters of straight
pipe require straightening vanes. Consult factory for
further information.
2. MARK the head wall with a line extending from
the pipe centerline directly upward to be used to mount
the meter support brackets.
3. MEASURE the distance between the propeller
centerline and the underside of the lower bracket
attached to the meter drop pipe. This is the same
dimension as the distance between the centerline of
the pipe and the location of the bolt pattern centerline
for the lower bracket mounting plate. Mark the lower
bracket bolt centerline on the head wall.
4. BRACKET SEPARATION should be determined
by measuring the distance between the underside of
the lower bracket attached to the meter drop pipe
and the top side of the upper bracket attached to the
meter drop pipe. This dimension is to determine the
distance between the centerline of the lower bracket
and upper bracket bolts. Mark the location of the
upper bracket bolts. Mark the location of the upper
bracket bolt centerline on the head wall.
5. ATTACH upper and lower brackets to the head
wall, using the brackets themselves as drill templates.
Make certain that the brackets are installed straddling
the vertical centerline drawn on the head wall in step
2.

30119-24 Rev. 10.9/07-09
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6. METER can now be placed carefully onto the
brackets allowing the lower bracket to slide into the
lower guide and then sliding the upper bracket into
position.
7. PROPELLER POSITION should be double checked
to make certain the propeller rides in the center of
the pipe and is parallel to flow. Adjust brackets, if
necessary, and make sure that all bolts are tightened
securely.
8. PADLOCK can be inserted through the hasp
cast into the upper bracket to eliminate unauthorized
removal of the meter from the pipeline.
ELECTRONIC OPEN FLOW METER
OPERATION AND MAINTENANCE MANUAL
III. MCCROMETER products have been carefully designed
to be as maintenance free as possible. Periodic pre-
ventive maintenance, however, is highly recommended
and should be practiced according to schedule to
assure continuous accuracy and trouble-free perfor-
mance of your propeller meters. The maintenance and
inspection procedure can also be used as a guide to
locating a problem in the unit that may be the cause
of abnormal meter operation.
Routine preventative maintenance should be performed
on all meters, which includes cleaning and an inspection
of the propeller and its bearing. The interval between
inspections depends on the water quality and the usage
of the meter The initial inspection should be performed
after one to two years of service, to determine the
period between future inspections. After five to ten
years, the complete meter should be inspected to
ensure years of dependable service.
IV. METER ASSEMBLY should be removed from the
service position by removing padlock, if any, from the
upper bracket and lifting the meter off of the support
brackets. Care should be exercised when removing the
meter to avoid propeller blade damage that can occur
if the propeller is bumped against the lower guide or
inside of pipe during removal.
V. WORKING AREA chosen for disassembly and reassem-
bly of the meter components should be clean to reduce
the chance of dust or dirt particles being introduced
into the propeller area.
VI. DISASSEMBLY AND INSPECTION OF METER
should include cleaning the propeller assembly (#1),
ceramic sleeve bearing separator assembly (#12), and
drive magnet (#9).
1. PROPELLER REMOVAL can be accomplished by
first removing the thrust bearing cartridge assembly (#5).
Loosen the set screw (#3) in the side of the nose of
the propeller. Remove the thrust bearing cartridge
(#5) by turning it counterclockwise while holding the
propeller in place.
2. REVERSE THRUST BEARING CARTRIDGE (#6)
must now be removed. Turn the propeller (#2) so that
the allen wrench clearance hole is lined up with the set
screw in the side of the reverse thrust bearing cartridge
(#6). The location of the set screw is marked by a small
hole drilled in the face of the reverse thrust bearing
cartridge. With a 5/64 inch allen wrench, loosen the
set screw (#7) in the reverse thrust bearing cartridge
(#6) two to three turns, which will allow the cartridge
to be unscrewed without damaging the spindle thread.
NOTE: If the bearing area appears to be clogged with
dirt or sediment, making it difficult to locate the set
screw (#7) or to allow the allen wrench to fit into
the set screw socket, then the bearing area should be
flushed out with water. Insert Tool T-2402X-1
into the
propeller through the threaded nose. The tabs in the
tool should engage in the screwdriver slot in the end
of the reverse thrust bearing cartridge (#6). Remove
the propeller assembly (#1) and reverse thrust bearing
cartridge (#6) by turning Tool T-2402X-1 counterclock-
wise unscrewing the reverse thrust bearing cartridge (#6)
from the spindle (#12). The propeller assembly with
reverse flow cartridge will now slide off the spindle.
WARNING: If the reverse thrust cartridge does not
unscrew easily, it may be because the set screw was
not unscrewed enough. If unscrewing the reverse flow
cartridge is continued with the set screw binding on
spindle thread, damage to thread could occur.
3. WATER LUBRICATION of the ceramic sleeve
bearing (#12) is achieved by means of two openings
in the end of the thrust bearing cartridge (#5) which
allow air to be purged from the bearing area. These
should be cleared of any foreign material by running
a small wire through the holes on either side of the
screwdriver slot.
4. CERAMIC BEARING CARTRIDGE (#8) and drive
magnet (#9) should be cleaned of any foreign mate-
rial and inspected for damage. Using a bottle brush,
thoroughly clean the ceramic bearing surface (#8) and
inside diameter of the magnet (#9). After cleaning the
propeller, flush the inside out with water. The outside
surfaces of the propeller should also be cleaned to as-
sure a smooth, unrestricted flow across the surface
of the propeller. Do not use an oil based solvent in
cleaning, as damage to the assembly could occur.
5. SPINDLE CERAMIC SLEEVE (#12) and the O.D.
or surface of the separator (#12) should be cleaned
and inspected for any substantial amount of wear.
The thrust bearing (#26) should be checked for any
damage. If it is determined that the spindle ceramic
sleeve or separator (#12) are worn sufficiently, the
separator/support spindle assembly (#12) should be
replaced.

30119-24 Rev. 10.9/07-09
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(#5) counterclockwise 1/8 of a turn. Tighten set screw
(#3). Check the longitudinal end play of the propeller
to ensure it’s not excessive and does not allow the
propeller (#2) to contact the gearbox (#6). Check the
clearance between the propeller (#2) and gearbox (#6).
The clearance should be approximately .01” between
the gearbox (#6) and trailing edge of the propeller when
the propeller in pushed back (toward the drop pipe).
The propeller assembly (#1) must spin freely.
3. PROPELLER BEARING (#8) can be checked for
excessive radial play by rocking the propeller (#2) gently
from side to side on the spindle (#12). Some play is
required for proper operation of the water lubricated
ceramic sleeve bearing.
VIII. SENSOR AND FC101 DIGITAL INDICATOR-
TOTALIZER
1. FC101 DIGITAL INDICATOR (#34) should not
be removed from the meter unless battery or sensor
replacement is required. If the unit must be removed,
proceed as follows:
2. FC101 (#34) can be removed from meter head
by removing the four screws (#32) then slightly lifting
unit up and turning over to disconnect the 2-lead sensor
wires from the bottom of the FC101. If the meter is
equipped with a transmitter, the transmitter wires must
also be disconnected.
3. SENSOR HOUSING should be removed only if
replacement is necessary. It can be taken out of the
separator after removing the propeller (Section VI Step
1) and the separator/support spindle (Section VI Step
6). Using an allen wrench, loosen the sensor housing
set screw in the side of the sensor housing. Slide the
sensor housing and wire assembly out of the separa-
tor.
4. BEFORE REPLACING THE SENSOR be sure
the separator is dry. Slide sensor housing and wire
assembly into the separator until it stops against the
inside of separator. Note: It does not make any
difference what rotation position sensor is installed,
however, wire must be positioned toward back (open
end) of separator. Tighten the sensor housing set
screw to hold the sensor housing snugly in place. DO
NOT OVERTIGHTEN. Feed the sensor wire up through
the gearbox and out the meter head.
5. LITHIUM BATTERY should offer 6 to 10 years
of operation. The FC101 has a low battery display
that comes on when approximately six months of life
is remaining. The battery should test at least 2.8 to
3.6 volts to be considered good. NOTE: Batteries
should be disposed of in an environmentally safe
manner.
6. SEPARATOR/SUPPORT SPINDLE ASSEMBLY
(#12) can be removed for replacement by removing
the four mounting screws (#13) which thread into the
gearbox. Separator O-ring (#14) should be replaced
and the new O-ring (#14) covered with a thin coat of
silicone grease. The separator/support spindle assembly
(#12) can then be replaced in the front of the gearbox
(#6) with a firm push, gently rotating the assembly at
the same time. Replace and tighten the four mounting
screws (#13).
VI. REASSEMBLING METER
1. PROPELLER INSTALLATION is accomplished by
following these steps:
a) The reverse thrust cartridge set screw (#7)
should be protruding out of the reverse thrust
bearing cartridge so it will not bind up on
the spindle thread. Note: Look through the end
of the propeller and hole in the reverse thrust
cartridge to be sure the set screw is not show-
ing.
b) Slide the propeller assembly onto the support
spindle (#12) until the reverse thrust bearing car-
tridge (#6) contacts the threads on the end of the
spindle (#12). Using Tool T-2402X-1, thread the
reverse thrust bearing cartridge onto the spindle.
If you feel any resistance when threading the
reverse thrust cartridge on, stop at once and
check to be sure the set screw is not binding on
the thread. Be careful not to cross-thread the
reverse thrust bearing cartridge.
c) Thread the reverse thrust bearing cartridge (#6)
onto the spindle (#12) until the trailing edge of
the propeller contacts the gearbox (#6). Set the
proper end play by inserting a 5/64 inch allen
wrench into the reverse thrust bearing set screw
(through the side of the propeller) and loosen the
reverse thrust bearing cartridge (#6) one half turn
counterclockwise.
d) Tighten the set screw in reverse thrust bearing
cartridge. There should be approximately .02”
clearance between the gearbox (#6) and trailing
edge of the propeller when the propeller in pulled
forward (away from the gearbox). The propeller
must not contact the gearbox.
2. THRUST BEARING CARTRIDGE ASSEMBLY (#5)
should be inspected for damage and replaced in the
nose of the propeller. The thrust bearing cartridge (#5)
is used to adjust the amount of longitudinal end play
of the propeller assembly on its spindle (#12), which
should be about 1/64 inch. End play can be adjusted
by turning the thrust bearing cartridge assembly (#5)
clockwise until it tightens against the end of the sup-
port spindle (#12), then turning thrust bearing cartridge

30119-24 Rev. 10.9/07-09
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7. THE FC101 DIGITAL INDICATOR-TOTALIZER
(#34) can now be installed in one of four positions
for more convenient reading with four screws (#32).
IX. PRIOR TO INSTALLING METER
1. PROPELLER ASSEMBLY (#1) should be dipped
in water to lubricate the propeller ceramic sleeve
bearing (#8). Spin the propeller (#2) gently to make
certain the meter operates smoothly and no bind or
drag is apparent.
2. FC101 (#34) and sensor (#15) should be checked
to be sure they are connected and that the battery is
good. Turn the propeller by hand at a fairly fast even
speed and the indicator should display a flow rate.
3. METER ASSEMBLY can now be installed in the
service line. When lowering the meter back onto its
bracket, take care not to damage the propeller blades
on the lower guide. Make certain that no foreign
materials are attached to the inside of the service
line pipe, as any flow disturbance or obstruction may
affect the accuracy of the meter.
X. ORDERING PARTS OR RETURN TO FACTORY
Inspection of all meter components that may be
replaced in the field has been accomplished at this
point. Should any of the meter parts upon inspec-
tion, appear to be damaged or excessively worn, they
must be replaced to assure proper meter operation and
prevent further damage. Cost for replacement parts not
covered by warranty are available from current parts
and price list. If it is determined that the meter should
be returned for repair, please notify McCrometer prior
to shipment. Each meter must be properly packaged
to prevent damage to the meter in shipment.
NOTES

30119-24 Rev. 10.9/07-09
7
SPECIFICATIONS INDEX
A/B
RATIO
CHANGE GEARS
METER SIZE &
MODEL NO.
REGISTRATION
INDICATOR DIAL
GEARING
REPAIR RECORD
SERIAL NUMBER PURCHASE DATE
ODOMETER READING
NOTES:
DATE REPAIR METER LOCATION COMMENTS

30119-24 Rev. 10.9/07-09
8
CONSULT FACTORY FOR PRICING.
10”-72” ELECTRONIC OPEN FLOW METERS
MODEL OF12D
PARTS LIST
When ordering replacement parts, please specify: • Meter Size • Meter Model Meter • Serial Number
* INSERT METER SIZE TO COMPLETE PART NUMBER - FOR EXAMPLE: INSERT -10 FOR 10”, -12 FOR 12”, ETC.
‡ CONSULT FACTORY TO COMPLETE PART NUMBER.
QTY
1
1
1
1
1
1
1
1
1
1
1
2
1
4
1
1
1
1
1
4
2
4
1
1
1
1
1
1
4
1
1
1
Part Number
7-MLI1D-*
5-2425-‡-PT
3-2425-‡-P
1-1125-6
1-1116-8-6
3-2356
3-2402-2
1-1101-8-5
2-2426-P-1
2-1601-2
1-2428-‡
1-1115-3-18
4-2455-2
1-1103-8-7
1-1551-24
4-2730-3-‡
2-2238-*
2-2731
1-1551-2
1-1103-8-7
2-2448
1-1205
2-2447
2-2445
2-2446
2-2444
1-1707-19 /-20
1-1551-38
10605
FC101-M
FC101-*
10015-00K
No.
none
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
30
31
32
33
34
none
Description
Model MLI1D Main Line Meter Head Assembly
Propeller Assembly (Items 2 thru 8)
Propeller
Set Screw, Nylon Point
Screw, Bearing Cartridge Mounting
Thrust Bearing Cartridge Assembly
Reverse Thrust Bearing Cartridge Assembly (Items 6 and 7)
Set Screw, Reverse Thrust Bearing
Ceramic Bearing Cartridge
Drive Magnet
Drive Magnet Retaining Plate
Screw, Magnet Retaining Plate (each)
Separator/Support Spindle Assy
Screw, Separator/Spindle Mounting (each)
O-ring, Separator
Sensor Housing, Sensor and Wire Assembly
Gearbox
Gearbox Backplate
O-ring, Gearbox Backplate
Screw, Gearbox Backplate Mounting (each)
U-Bolt (each)
Nut, U Bolt (each)
Clamp, Lower
Wall Mounting Bracket, Lower
Clamp, Upper
Wall Mounting Bracket, Upper
InLine Terminal (19) 2 Wire (-20) 3 Wire For Remote
O-Ring - 243 Buna
Screw 10-32 x 1.25” Long
Magnet Wand
FC101 Flowcom Ind.-Tot. & Bonnet Complete - See IOM Manual
Desiccant Bag

30119-24 Rev. 10.9/07-09
9
10”-72” ELECTRONIC OPEN FLOW METERS
MODEL OF12D
* MODEL FC101 DIGITAL INDICATOR-TOTALIZER ASSEMBLY
*CERAMIC BEARING CARTRIDGE PROPELLER
*THREADED SPINDLE AND REVERSE THRUST BEARING CARTRIDGE
References to 26-29 not used.

30119-24 Rev. 10.9/07-09
10
WARNING:
BEFORE REMOVING THE METER FROM THE PIPELINE THE
WATER MUST BE TURNED OFF AND PRESSURE MUST BE
RELIEVED FROM THE LINE. SERIOUS INJURY CAN RESULT
FROM REMOVING A METER HEAD UNDER PRESSURE.