Table of Contents
Advertisement
Application guide
G5 flow computers
G5
µFLO
(microFLO
Component replacement instructions
Easy parts replacement in the
most accurate and reliable single
run gas flow computer
Introduction
This guide is designed for typical installations only. Maintenance must be performed
by personnel knowledgeable of the ABB Totalflow
integral multivariable transducer (IMV), and the theory of natural gas electronic flow
measurement. Maintenance personnel must also be knowledgeable of local and
national codes as they apply to hazardous areas, communication wiring, and
electrical wiring.
Read and consider the contents of this guide prior to beginning installation of the
equipment. If for some reason there are questions that are not answered in this
guide, or other documentation listed in the following section, call the local ABB
representative, or call the main office number listed on the back page of this guide.
CAUTION – Equipment damage. The µFLO
temperature range differs from the µFLO
ambient temperatures between -40 °F and +158 °F (-40 °C and +70 °C).
Purpose
This guide provides easy-to-follow instructions for replacement of all available spare
part components.
G5
)
®
G5
µFLO
flow computer, the
G5
flow computer operating
G4
G5
. The µFLO
is rated for
Advertisement
Table of Contents
Related Manuals for ABB Totalflow G5 Series
Summary of Contents for ABB Totalflow G5 Series
- Page 1 If for some reason there are questions that are not answered in this guide, or other documentation listed in the following section, call the local ABB representative, or call the main office number listed on the back page of this guide.
- Page 2 Assumptions For any questions that are not answered in this guide or the other documentation listed in the previous section, call the local ABB representative, or call the main office number listed on the back page of this guide. The following apply to the instructions in this guide: —...
- Page 3 Safety warning and note symbols Read and follow the instructions contained in this guide before and during equipment installation. Failure to do so could result in bodily injury or equipment damage. IMPORTANT NOTE: Installation and maintenance must only be conducted by personnel authorized to work on electrical installations, and in accordance with relevant national and local codes.
- Page 4 Overview The µFLO flow computer field-replaceable components are: — I/O expansion board — µFLO electronic board — µFLO Transducer (differential or linear, without the µFLO electronic board) — µFLO IMV assembly (complete) Procedure overview Disassembly and reassembly of the flow computer does not follow a linear pattern. However, to present the procedures in a linear manner, the following table will assist in determining which procedures will be required for component replacement, but not necessarily the order in which they should be followed.
- Page 5 Procedures Prior to all component replacement procedures, the following sections must be completed: — 3.1 Preserving data and configuration files — 3.2 Disconnect power Completion of these two sections indicates that all files have been protected from a loss of power and that the flow computer has been powered down and is deemed safe.
- Page 6 Restore power To restore power to the µFLO electronic board, all cables and onboard and field wiring connections should be complete. Do not restore power until ready to restart the flow computer. Reconnect the battery cable plug from J15. Reconnect the external power / charger connector from J17 (Figure 1, on page Replacing the I/O expansion board 3.4.1 Remove the I/O expansion board...
- Page 7 Expansion board mounting screws WHEN OPERATING IN RS-232 MODE S1: 1 & 2 MUST BE SET TO OFF RS485/TBUS RBUS Terminat ion J6/J10 CFG 0-20 mA 0-10 V Expansion board mounting screws Figure 2: µFLO I/O expansion board Use a small slotted screwdriver to loosen the four (4) mounting screws that attach the I/O board to the µFLO board.
- Page 8 3.4.2 Reinstall the I/O expansion board WARNING – Bodily injury and property damage. Wiring peripheral devices to the flow computer electronic board should be performed prior to applying power. Do not apply power until instructed to do so. Fit the I/O expansion board connector (J1) onto the expansion port (J2) on the electronic board, but do not push down to seat the expansion board.
- Page 9 Reconnect field terminations, if removed: Communication wiring from J2 DI wiring from J9 DO wiring from J5 AI #1 wiring from J4 AI #2 wiring from J8. If performing additional procedures, return to those instructions. Otherwise, follow the procedure in section 3.3, Restore power, on page 6. 2105514-001 rev.
- Page 10 Replacing the µFLO electronic board 3.5.1 Remove the electronic board This procedure is applicable only for the direct replacement of the µFLO electronic board. If removal of the electronic board is required during another procedure, those instructions will be addressed in that procedure. To remove the µFLO electronic board: Follow the procedure in section 3.1, Preserving data and configuration files, on...
- Page 11 Loosen the lithium battery unit from the head of the transducer assembly (Figure 5, µFLOG5 assembly, exploded view, page 11). The battery will need to remain connected to, and moved with, the electronic board. MMI connector Liquid crystal display Battery tray Gasket Optional I/O...
- Page 12 3.5.2 Reinstall the electronic board On the back of the replacement board, attach the electronic board to transducer sensor cable to the connector. Carefully feed the excess cable back into the transducer housing, and align the board mounting holes with their respective standoffs. Using a ¼...
- Page 13 Replacing the µFLO IMV assembly 3.6.1 Remove the IMV assembly Removal of the complete IMV assembly is necessary and applicable in two component replacement procedures: — Transducer assembly replacement (either differential or linear assemblies) — IMV assembly replacement (complete) To remove the IMV assembly Follow the procedure in section 3.1, Preserving data and configuration files, on page 5.
- Page 14 Rotate the enclosure, if necessary, to allow removal of the IMV: Using a ½ inch hex socket with ratchet, loosen the µFLO enclosure mounting clamp bolts and rotate the enclosure a sufficient distance to allow removal of the IMV, approximately 11 inches (28 cm). CAUTION –...
- Page 15 3.6.2 Reinstall the IMV Assembly Replacing the complete IMV assembly is necessary and applicable in two component replacement procedures: — Transducer assembly replacement (either differential or linear assemblies) — IMV assembly replacement (complete) To install the complete IMV assembly, perform the following steps: Place the clean weather sealing gasket over the upper body of the IMV assembly and move the gasket down to the mounting plate just below the electronic board (Figure 6).
- Page 16 Carefully move the IMV up into the access cutout. Place the split washer, then the flat washer on the screw and screw into the mounting plate and up into the corresponding screw hole. Repeat step 3 for the remaining mounting screws. Securely tighten all eight mounting screws to keep out external environmental elements.
- Page 17 Replacing the µFLO transducer assembly (only) When replacing either the differential or linear transducer assembly only, the electronic board must be removed and reinstalled on the replacement assembly. This procedure is applicable for either a differential or linear transducer assembly. Follow the procedure detailed in section 3.6.1, Remove the IMV assembly, on page 13.
- Page 18 Considerations outside the scope of this document µFLO startup Now that the spare part or component is properly installed, the flow computer may require additional setup. The µFLO startup guide, included with this kit, addresses startup from installation through setup and operation. For the purposes of this kit, review the entire guide and then begin with the first applicable section for your installation.
- Page 20 Should any Fax: +1 918 338 4699 discrepancies exist, the US English version will be considered final. ABB is not liable for any errors and omissions in the translated materials. Any and all derivatives of, including translations thereof, ABB Inc.