Miller Big Blue 800 DUO PRO, Руководство пользователя

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Complete Parts List available at www.MillerWelds.com
OM-262 752 Page 53
SECTION 9 − TROUBLESHOOTING
9-1. Troubleshooting
Also see Voltmeter/Ammeter help displays to assist in troubleshooting weld problems (see Section 8-9). Also see Engine Information Display to
assist in troubleshooting engine related problems (see Section 12).
A. Welding
Trouble Remedy
No weld output; generator power output
okay at AC receptacles. Place Process/Contactor switch in an Electrode Hot position, or place switch in a Remote On/Off Re-
quired position and connect remote contactor to Remote 14 receptacle (see Sections 5-15).
Reset supplementary protector CB3 (see Section 8-8).
Reset supplementary protector CB9 (see Section 8-8). Check for faulty remote device connected to
Remote 14 receptacle.
Check and secure connections to Remote 14 receptacle (see Section 5-15).
If VRD switch S5 is On, check voltage feedback wires at output terminals and have Factory Authorized
Service Agent check Main Control boards PC1 and PC21.
Have Factory Authorized Service Agent check filter board PC5 and connections.
Check fuse F2, and replace if open (see Section 8-8). Have Factory Authorized Service Agent check
brushes and slip rings, weld excitation circuit, and the rotor.
No weld output or generator power out-
put at AC receptacles. Disconnect equipment from generator power receptacles during start-up.
Reset supplementary protector CB4 (see Section 8-8).
Check fuses F1 and F2, and replace if open (see Section 8-8). Have Factory Authorized Service Agent
check integrated rectifier SR2, capacitor C6, and the rotor.
Have Factory Authorized Service Agent check brushes and slip rings, and field excitation circuit.
Erratic weld output. Check and tighten connections inside and outside unit.
Be sure connection to work piece is clean and tight.
Use dry, properly stored electrodes.
Remove excessive coils from weld cables.
Have Factory Authorized Service Agent check brushes and slip rings.
High weld output. Check position of Voltage/Amperage Adjust control.
Have Factory Authorized Service Agent check voltage feedback circuit.
Low weld output. Check position of Voltage/Amperage Adjust control.
Check fuses F1 and F2, and replace if open (see Section8-8). Have Factory Authorized Service Agent
check integrated rectifier SR2, capacitor C6, and the rotor.
Place VRD switch S5 in off position and try welding. If machine operates normally, have Factory Autho-
rized Service Agent check S5 and Main Control Board PC1 and PC21.
Low open-circuit voltage. Check position of VRD switch.
Check position of Process/Contactor switch.
High open−circuit cvoltage with VRD
switch S5 On. Have Factory Authorized Service Agent check IGBT modules PM1, PM2, PM21 and PM22; check and
replace Main Control boards PC1 and PC21.
No remote fine amperage or voltage
control. Check and secure connections to Remote 14 receptacle (see Section 5-15).
Repair or replace remote control device.
Have Factory Authorized Service Agent check current sensing devices, and connections.