Maintenance and Troubleshooting, －４２－, ６Ｆ８Ａ０８７０ | Toshiba LF414

7. Maintenance and Troubleshooting

６Ｆ８Ａ０８７０

7. Maintenance and Troubleshooting

Safety precaution for Maintenance and Troubleshooting

WARNING

Do not disconnect while circuit is live unless location is known to be nonhazardous.

Live part of electric circuit or a high temperature department can cause explosion.

DON’T

Do not modify or disassemble the enclosure.

Strength degradation and defects of enclosure can cause explosion.

DON’T

Do not use parts of other products.

Protective performance degradation for hazardous location can cause explosion.

DON’T

Do not live circuits While assembly of all components is not over.

Protective performance degradation for hazardous location can cause explosion.

DON’T

Install per the National Electrical Code for the US (NEC, ANSI/NFPA 70) and the Canadian Electrical code for Canada (CEC, CAN/CSA-C22.1) and the drawing 3S8A2532, 3S8A2676 and 3S8A2677 (Refer to Appendix 1.).

Unsuitable conduit connections for hazardous location can cause explosion.

DO

CAUTION

Do not conduct wiring work when power is applied.

	Wiring while power is applied
DON’T	can cause electric shock.
DON’T

Do not touch the LF414/LF600F, LF414/LF610F, LF414/LF620F and LF414 main body when high temperature fluid is being measured.

	The fluid raises the main body
DON’T	temperature and can cause burns.
DON’T

－４２－

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Toshiba LF414 manual Safety precaution for Maintenance and Troubleshooting, －４２－, ６Ｆ８Ａ０８７０, Don’T

Contents

６Ｆ８Ａ０８７０ Integral type LF414/LF600F, LF414/LF610F, LF414/LF620F ６Ｆ８Ａ０８７０－１－ About Safety Precautions －２－ SAFETY PRECAUTIONSExplanation of signal words Safety symbols „ Do not modify or disassemble the enclosure SAFETY PRECAUTIONS Safety Precautions for Installation and Wiring－３－ DON’T －４－ SAFETY PRECAUTIONS continuedSafety Precautions for Installation and Wiring DON’T －５－ Safety Precautions for Maintenance and InspectionWarranty and Limitation of Liability Usage limitation 2 Wire cables correctly and securely Handling Precautions－６－・Places where excessive vibration or mechanical shock occurs －７－ Handling Precautions continued －８－ Table of Contents －９－ 1. Product Inspection and Storage1.1 Product Inspection 1.2 Strage 5 Intelligent functions Features2. Overview －１０－ Integral 1 Meter size of 1/2 inch 15mm 3. Names of Parts3.1 Appearance 3.1.1 Appearance of LF414/LF600F, LF414/LF610F Ground terminal for converter 2 Meter size of 1inch 25mm－１２－ Figure 3.1.2 Appearance of LF414/LF600F, LF610F Meter size 1 inch25mm Meter size 1 1/2 to 4 inch 40 to 100mm 3 Meter size of 1 1/2 to 4 inch 40 to 100mm－１３－ Figure 3.1.3 Appearance of LF414/LF600F, LF610F provided 4 Meter size of 6 and 8 inch 150 and 200mm－１４－ Lifting Lugs Ground terminal for converter Flow direction arrow Detector 3.1.2 Appearance of LF414/LF620F－１５－ Figure 3.1.5 Appearance of LF414/LF620F Meter size 1/2inch15mm Figure 3.1.6 Appearance of LF414/LF620F Meter size 1 inch25mm －１６－Ground terminal for converter Flow direction arrow Figure 3.1.7 Appearance of LF414/LF620F －１７－ Ground terminal for converter Lifting Lugs －１８－Figure 3.1.8 Appearance of LF414/LF620F Meter size 6 and 8 inch 150 and 200mm Signal cable 3.1.3 Appearance of LF414Separate 1 Meter size of 1/2 inch 15mm －１９－ for Excitation cable －２０－for Signal cable Figure 3.1.10 Appearance of LF414 Meter size 1 inch25mm Excitation cable －２１－Signal cable Figure 3.1.11 Appearance of LF414 Figure 3.1.12 Appearance of LF414 －２２－Meter size 6 and 8 inch150 and 200mm －２３－ Signal cable terminal3.2 Construction of the terminal blocks 3.2.2 Terminal Block Construction of LF414 Type „ Use an appropriate device to carry and install 4. InstallationSafety Precautions for Installation －２４－ 2. Avoid places where excessive pipe vibration occurs 4.1 Notes on Selecting the Installation Location4.2 Mounting Procedure 4.2.1 Pipe checks －２５－ Figure 4.2 Example of Pipe Fixing Procedure －２６－Figure 4.3 Model Diagram of Unsupported Pipes －２７－ 4.2.2 Installation ProcedureFigure 4.4 LF414 flowmeter detector piping connections Table 4.1 Bolt length and Nut tightening torque －２８－ L=5D 1a Ideal Upstream Straight Pipe Length Installation Requirements1b Optional “Mount Anywhere” Installation Mount-Anywhere Technology 4.3 Piping Connections Figure 4.5 Detector Piping Orientation 2 Pipe Orientation－３０－ Figure 4.6 Installation position of the detector Figure 4.7 Flow direction arrow on the detector 3 Flow Direction4 Preventing an Empty Pipe Condition －３１－ Figure 4.10 Grounding the LF414/LF620F Type 4.4 Grounding1 Grounding of the LF414/LF620F type －３２－－３３－ 2 Grounding of the LF414 type Safety Precautions for Wiring 5.Wiring－３４－ independently from power equipment. 100 ohm ６Ｆ８Ａ０８７０－３５－ „ Install a switch and fuse to isolate the Table 5.1 Installation Cables Notes on wiring5.1 Cables －３６－－３７－ 5.3 Notes on Wiring 5.3.1 Notes on Instrumentation-Converter Wiring5.3.2 Notes on Wiring of the Separate type LF414 5.2 External Device Connections and Grounding －３８－ 5.4 Wiring 5.4.1 Terminal Treatment of Cables1 Power cable, current output cable, digital I/O cables Separate 2 Excitation cable Figure 5.3 Terminal Treatment of Flow Rate Signal Cable 3 Connecting the input signal cableNotes on signal cable shield processing work －３９－－４０－ 5.4.2 Cable ConnectionFigure 5.5 Connecting a Cable to Terminal Block „ Check the wiring between the converter and related instruments 6. OperationPreparatory check －４１－ „ Do not conduct wiring work when power is applied 7. Maintenance and TroubleshootingSafety precaution for Maintenance and Troubleshooting －４２－ materials 7.1 Maintenance„ Cleaning Check/Replacement of the display unit START Are power supplies correct NO for each device? YES 7.2 Troubleshooting7.2.1 Flow rate is not indicated －４４－ Clean the inside of the detector pipe 7.2.2 Flow rate indicated is not correct－４５－ Perform the zero adjustment Refer to combined converters manual Use a power supply within the specified range 7.2.3 Flow rate indication is not stable－４６－ Is power supply voltage －４７－ 8. Principle of OperationSquare-Wave Excitation Figure 8.1 Principle of Operation Measurement range in terms of flow velocity 9. Specifications9.1Specifications －４８－ Electrical conductivity μS/cm －４９－Figure 9.1 Electrical Conductivity vs. Cable Length Table 9.1 Standard Flow Range －５０－ Unit m3/h －５１－Table 9.2 Flow velocity vs. flow volume Unit gal/min －５２－ Table 9.3 Type Specification Code9.2 Type Specification Code －５３－ Table 9.4 Type Specification Code Exciting Cable and Signal CableExciting cable length Nominal cross-sectional area Overall diameter 2 Meter size of 1 inch 25mm 10. Outline Dimensions10.1 Outline dimensions of LF414/LF600F, LF414/LF610F 1 Meter size of 1/2 inch 15mm －５５－ 3 Meter size of 1 1/2 to 8 inch 40 to 200mm －５６－ 10.2 Outline dimensions of LF414/LF620FWaight approx 9 lb 4kg －５７－－５８－ 10.3 Outline dimensions of LF414Waight approx 7 lb 3kg －５９－－６０－ Appendix 1-1 A system block diagram for LF414/LF600F, LF414/LF610F －６１－ 1-2 A system block diagram for LF414/LF620F －６２－ 2-1 A system block diagram for LF414 Product code －６３－Distributor Address Name Phone number （ FCF50017