Burger & Brown SMARTFLOW LFI3-A-40 User manual

Form #SF-217 (05.22)
4500 E 142nd Street • Grandview, MO 64030
Tel. [phone] • www.smartow-usa.com
Low Flow Indicator
or
Low Flow Indicator with Delta-Q® Precision
Flow Regulator
Installation and Operating Instructions
Applies to: LFI3-A-40, LFI3B-A-40 or LFI3-A-40-Q, LFI3B-A-40-Q
General
Smartow Low Flow Indicator is an in-line device using a high-visibility
impeller to show cooling media movement inside process cooling lines with
ow between 0.3 and 4 Liters per Minute.
Low ow Indicators are ideal for use in critical injection mold cooling
circuits using bubblers or baes where ow is restricted and eective
cooling is essential.
The polysulfone ow body is compatible with common cooling liquids.
Wetted parts are made from corrosion-resistant materials in a proven design
platform.
Optional temperature and pressure gauges plus Delta-Q ow regulators can
be added as needed for increased functionality and suitability to process
requirements.
Specifications
Flow Range ......................................................0.3 - 4 LPM (0.08 - 1 GPM)
Connection size...........................................1/4", 3/8" or 1/2" NPT or BSPP
Max. Temperature ................................................................... 210°F (99°C)
Max. Pressure........................................................................100psi (6.9bar)
Component Materials
End Caps .......................................................... Brass or Glass-Filled Nylon
Flow Body.................................................................................. Polysulfone
Impeller............................................................................................... Nylon
Shaft .......................................................................................Stainless Steel
O-Rings.............................................................................................. EPDM
Screws.................................................................................... Stainless Steel
Installation Best Practices
The flow indicator is line-mounted without additional
support.
1. For best results, install the flow indicator with 10
diameters of straight pipe before the inlet of the flow
indicator, and 5 diameters of straight pipe after the
outlet of the flow indicator.
2. Use a pipe thread sealant compatible with the
maximum operating temperature and process fluid.
Thread sealant must not contain solvent.
3. Cooling media should be clean and ltered to avoid
scale buildup inside the indicator. Impurities in the
water are likely to cause scale buildup in cooling
lines and deposits causing malfunction of the low
ow indicator.
4. Install the ow indicator with the arrow pointing in
the direction of ow.

2
Low Flow Indicator Instructions
burger & brown engineering, inc. www.smartflow-usa.com
Maintenance
Debris in the circulating system may cause the impeller to stick or discolor
the inside of the ow indicator body. Occasional cleaning of the internal
parts is recommended for optimum operation.
Clean the ow body with mild, soapy water. DO NOT CLEAN WITH
ACETONE or SOLVENTS. Do not clean with abrasives that will scratch
the window and reduce visibility.
1. Remove the screws in each corner. Remove the ow indicator body and
impeller sleeve. Check that the impeller moves freely on the shaft.
2. Thoroughly clean ow path and the ow body.
3. Replace any parts that are worn or broken.
4. Replace o-rings if they are hard, brittle or attened.
5. Do not over-tighten the screws as this may crack the ow body.
Figure 1
Screws
End Cap
O-Ring
Flow Body
Shaft
Impeller
Sleeve
Impeller
O-Ring
End Cap
Replacement Parts List
Item Factory Part Number
Screws *.........................................SHCS-10x24-2.0-SS
O-Ring (2)........................................... 568-214-5601-70
Sleeve.....................................................LTLF-SLEEVE
Impeller Shaft................................................. EFSH-100
Impeller............................................. LTLF-IMPELLER
* Longer screws will be used if accessories such as
pressure or temperature gauges are present. Contact
Customer Service for additional replacement parts
information if needed.
Caution
• Use at temperatures above 130°F(54°C) poses a serious personal injury
hazard. Use extreme caution, protective clothing, or shielding around
the system to minimize risk to personnel and nearby equipment
• Accelerated chemical attack with result if ow indicators are used at
elevated pressures and temperatures. Frequently inspect the body for
cracking or crazing which may indicate chemical attack. Sudden failure
and leakage can result from chemical attack. Consult the chemical
compatibility list for substances that attack the polysulfone ow body.
• Any liquid system oers the potential for accidental leakage. Leakage
onto electrical or computer equipment could result in costly damage
or personal injury. Do not locate piping systems where leakage might
damage equipment or pose personal injury hazards. If it is impossible
to avoid piping in such locations, use shielding to protect equipment
and personnel.
Chemical Compatibility
The following is a list of chemicals that are not compatible with the UDEL
Polysulfone used in the ow indicator body.
Acetone, Methyl Ethyl
Ketone
Benzene
Carbon Tetrachloride
Chlorobenzene
Chloroform
Cyclohexanone
Esters
Freon TA
Methylene Chloride
Tetrachloroethylene
1,1,2,2-Tetrachloroethane
Toluene
1,1,1-Trichloroethane
Trichloroethylene
Xylene
Limited Warranty
Seller warrants that Smartow® products supplied will conform to the description stated in published literature, and that the product
will be of standard quality. The seller warrants manufactured components for 90 days. This is the sole warranty made by Seller with
respect to this product. Seller expressly disclaims any other express or implied warranties, including, but not limited to, the implied
warranty of merchantability and the implied warranty of tness for a particular purpose.
Seller shall not be liable for any cost or damages, whether direct, incidental or consequential, including, but not limited to, any injury,
loss or damage resulting from the use of this product, regardless of whether any claim for such cost or damages is based on warranty,
contract, negligence, tort or strict liability. The sole liability of Seller is limited to repairing or replacing this product.
This warranty shall not apply to any products that have been repaired or altered by anyone other than Seller. The warranty shall not
apply to any products subject to misuse due to common negligence or accident, nor to any products manufactured by Seller which are
not installed or operated in accordance with the printed instructions of Seller or which have been operated beyond the rated capacity of
the goods. Seller states that the product’s useful safe life is 5 years. Actual life may vary widely depending on operating environment
such as temperature, pressure, and chemical exposure.