Smith-Root GPP 2.5 - Appendix: Advanced Troubleshooting; Check Generator AC Voltages; Check Connections, Brushes and Exciter Rectifier

28
GPP-I
2011
GPP ELECTROFISHER
USER'S MANUAL
© 2011 Smith-Root, Inc. Vancouver, WA - USA • Rev. 10
Contents
Introduction ........................................................................ 1
Unpacking .......................................................................... 2
Choosing a Location .......................................................... 2
Attaching Battery Leads .................................................... 2
Fuel Shut-Off Valves .......................................................... 3
Power Supply Controls ...................................................... 3
Electrosher Controls ........................................................ 3
Electrosher Connections .................................................. 4
Operating Procedure .......................................................... 4
Typical Hookups ................................................................ 5
Maintenance ....................................................................... 6
Basic Troubleshooting ....................................................... 7
GPP Specications Spreadsheet ......................................... 8
GPP Parts Identication ..................................................... 9
Fan Installation Kit/Engine Anti-Vibration Mounting ..... 10
Generator Anti-Vibration Mounting ................................ 11
Electrosher Control Panel .............................................. 12
Electroshing Safety ...................................................... 14
Preventing Electrical Shock ............................................. 16
Planning For Safety .......................................................... 17
Do's & Don'ts .................................................................. 18
Introduction to Electroshing .......................................... 19
Types of Current .............................................................. 21
Electrode Design .............................................................. 22
Field Techniques .............................................................. 26
Electroshing Reference & Training Materials ............... 27
APPENDIX: ADVANCED TROUBLESHOOTING .. 28
Check Generator AC Voltages ................................. 29
Test for Continuity and High Voltage Output .......... 30
Check Connections, Brushes & Exciter ................... 31
Check Rotor Windings ............................................. 32
Check Stator Windings ............................................ 33
Test GPP Control Box .............................................. 34
Test GPP Control Box- Cont. .................................. 35
Flashing the Rotor .................................................... 36
Building a Test Load ................................................ 37
2.5-5.0 GPP Wiring Diag ......................................... 38
7.5 GPP Wiring Diag ............................................... 39
9.0 GPP Wiring Diag ............................................... 40
Items manufactured by companies other than Smith-Root carry the original manufactures warranty. Please contact
product manufacturer for return instructions.
All Smith-Root, Inc. manufactured products are covered by a one year warranty.
2011
• Turn generator off before troubleshooting.
• Open the generator end-bell cover by removing the two large
screws on the housing cover.
• Inspect the wire bundles for chafng, loose or broken connections.
Repair if needed (See Fig. 3.1).
• Check brushes – replace brushes if length less than 3/8” ≈(1 cm)
(See Fig. 3.2).
• Clean rotor slip rings with ne non-metalic abrasive pad such as
3-M “Scotch Brite” (See Fig. 3.3).
• Disconnect wires from rectier. Check 3-pin rectier with ohm-
meter in diode testing position. The rectier should only conduct one
way between AC and negative pin. Replace if shorted between pins
or if open between pins. (See Fig. 3.4 and inset).
• Correct problems, reassemble and retest using procedure 1 and 2.
If there is still no voltage at connector, continue to procedure 4.
AC
AC
Rectifier
Fig. 3.1
Fig. 3.2
Fig. 3.3
Fig. 3.4
PROBLEM: no output from gpp electrofisher (cont.)
Procedure 3: Check connections, brushes, and exciter rectifier
Slip Rings