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1.0  AGV5 SERVICE AND REPAIR MANUAL OVERVIEW

The AGV5 Gas Metering Valve has been designed to provide reliable operation with a minimum
amount of maintenance. To ensure optimum performance, periodic inspection and cleaning is
necessary.

Preventative maintenance issues can be integrated into the current maintenance schedule of the
engine.  Most maintenance requires little effort and no downtime of the AGV5 valve.

Corrective maintenance is to be done when the AGV5 Gas Metering Valve begins to behave
erratically.  Procedures have been generated to troubleshoot and to repair most minor issues.

External Visual Inspection – 

Inspect the exterior of the valve for loose connections, frayed

wires or major structural damage

.

Cleaning –

Exterior cleaning will aid in the visual inspection of the external casing and ensure

good connections.  Ethyl alcohol or mild soapy water can be used as cleaning agents.

Maintenance Log – 

To facilitate troubleshooting and to establish service schedules, a

maintenance log should be kept on the valve.

Calibration

 – Calibration of the AGV5 is performed in a controlled environment before

shipment.  Since calibration of the valve requires equipment not normally available in the field,
it is recommended that the device be returned to the Altronic distributor serving your area.

Throughout this service manual service parts will be identified by the item number assigned to them
in the parts list.  For example, (1a) and its position inside the AGV5 device can be found by locating
that item number on Fig.1A.

AGV UPDATES

In addition to the standard procedures, older

AGV5 units below S/N 1400

 will require more

items (such as the pressure transducer and transducer housing) to be changed.  These items
and procedures are identified by specific notes

(“When Updating Units below S/N 1400")

within the appropriate sections of the manual.

In addition to the repair of malfunctioning units, instructions are given in

SECTION 3.0 

which

describe the process of updating an AGV5 to the current configuration of PCB assembly.

Summary of Contents for AGV5 Series

Page 1: ...E AGV5 1 AGV5 1A AGV5 2 AGV5 2A IMPORTANT SAFETY NOTICE PROPER INSTALLATION MAINTENANCE REPAIR AND OPERATION OF THIS EQUIPMENT IS ESSENTIAL THE RECOMMENDED PRACTICES CONTAINED HEREIN SHOULD BE FOLLOWE...

Page 2: ...SERVICE MANUAL SECTION ITEM PAGE 1 0 VALVE SERVICE AND REPAIR MANUAL OVERVIEW 3 2 0 PARTS IDENTIFICATION 5 3 0 REPLACEMENT OR UPDATE OF PCB ASSEMBLY 13 4 0 REPLACEMENT OF THE PRESSURE TRANSDUCER 17 5...

Page 3: ...g To facilitate troubleshooting and to establish service schedules a maintenance log should be kept on the valve Calibration Calibration of the AGV5 is performed in a controlled environment before shi...

Page 4: ...FIG 1A PART IDENTIFICATION WHITE GREEN COVER CONTROL HOUSING ASSEMBLY ACTUATOR ASSEMBLY PORT ASSEMBLY TERMINAL WIRING TOP VIEW 0 GREEN...

Page 5: ...ION 1 1 881002 KT PCB Field Retrofit Kit 1a 1 872005 PCB Assem bly Logic 1b 1 810114 Bushing Magnet 1c 1 810112 Assembly Magnet Holder 1d 4 801008 W asher Flat 4 1e 4 801009 W asher Lock 4 1f 4 801010...

Page 6: ...FIG 1 B PART IDENTIFICATION NOTE DRAWING SHOWS CURRENT CONFIGURATION OF VALVE SOME MINOR DIFFERENCES MAY EXIST ON OLDER UNITS PRIOR TO S N 2001...

Page 7: ...f 1 810036 O ring 2g 1 810037 O ring 2h 1 810027 O ring 2i 1 810025 O ring 2j 1 810031 O ring 2k 1 803020 O ring Lube 3 3 801018 Screw 10 32 4 1 50303076 Valve Seat Primary 5 1 50303086 Valve Seat Sec...

Page 8: ...FIG 1C PART IDENTIFICATION ACTUATOR HOUSING MAGNET ASSEMBLY POPPET ASSEMBLY...

Page 9: ...4 801009 W asher Lock 4 1f 4 801010 Screw 4 40 2 1 820020 Valve Repair Kit 2a 1 810033 O ring 2b 1 810038 O ring 2c 1 810035 O ring 2d 2 810023 O ring 2e 1 810024 O ring 2f 1 810036 O ring 2g 1 81003...

Page 10: ...RT IDENTIFICATION NOTE FOR UPDATE KIT 820022 IT 19 ALL COMPONENTS SHOWN COME PREASSEMBLED AND TESTED 820022 KIT ALSO INCLUDES A SPECIAL MAGNET HOLDER ASSEMBLY WITH A 10 32 THREAD TO FIT VALVES BELOW S...

Page 11: ...1010 Screw 4 40 2 1 820020 Valve Repair Kit 2a 1 810033 O ring 2b 1 810038 O ring 2c 1 810035 O ring 2d 2 810023 O ring 2e 1 810024 O ring 2f 1 810036 O ring 2g 1 810037 O ring 2h 1 810027 O ring 2i 1...

Page 12: ...4 20 mA OUTPUT 1 4 20mA SIMULATOR i I A B C D E F G H J K L AGVS DIRECT ACTING GAS VALVE 19 36 VDC POWER 19 36 VDC RETURN _ 19 36 VDC RETURN 4 20 POSITION OUT 4 20 PRESSURE OUT 6 SERIAL RS485 _ SERIAL...

Page 13: ...to grip the cover C Remove the old PCB assembly 1a by removing the four Phillips headscrews 1f which secure it to the pressure transducer housing base 19 With the PCB assembly 1a loose locate the thr...

Page 14: ...O rings 2c and 2f in place under the pressure transducer housing assembly 19 Tighten the six Allen screws 26 to 18 20 inch pounds in order to hold the transducer housing assembly 19 to the control ho...

Page 15: ...op line of the display indicates that the valve is operating in the position control mode and the desired set point from the simulator is for a 100 open condition The XXX XX value is the valve positio...

Page 16: ...oltage representing the maximum open position of the valve or 100 open Recall the value read and recorded in section 3 5 step C This value minus 50 millivolts should be used for the MAXPOS value The 5...

Page 17: ...plied in a kit 27 which includes all of the necessary parts NOTE When repairing or updating existing AGV5 units with S N 1400 or lower the obsolete pressure transducer and transducer housing as well a...

Page 18: ...transducer housing K Attach the wiring to the PCB assembly 1a in the proper orientation 5 0 AGV5 PRESSURE TEST 5 1 After repair and before returning an AGV5 valve to service the valve assembly must be...

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