Hobart Welding Products OM-477 - Manuel (Page 36)

OM-477 Page 32
Trouble Remedy
Low or high weld output. Check control settings.
Place optional Process switch in correct position (see Section 5-1).
Check engine weld/power speed, and adjust if necessary (see Section 7-8).
Have Factory Authorized Service Agent check field current regulator board PC1.
Low open-circuit voltage. Place optional Process switch in correct position.
Check engine weld/power speed, and adjust if necessary (see Section 7-8).
Have Factory Authorized Service Agent check field current regulator board PC1 and optional CV-3 regu-
lator board PC2.
Maximum weld output only in each am-
pere range. Have Factory Authorized Service Agent check Amperage/Voltage Adjust control R1, capacitor C8,
diode D9, integrated rectifier SR4, control relay CR3, field current regulator board PC1, and optional
CV-3 regulator board PC2.
No CV weld output (units with remote
control or CV-3 option only). Check connections to Remote 14 receptacle RC3 and terminal strip 3T (see Sections 4-7 and 4-8).
Repair or replace remote control device.
Have Factory Authorized Service Agent check connector board PC5 and connections.
Wire feeder does not work (models with
CV-3 option). Reset circuit breaker CB3 and/or CB4 (see Section 7-4).
Check connections to Remote 14 receptacle RC3 and terminal strip 3T (see Sections 4-7 and 4-8).
Repair or replace wire feeder.
No amperage control (or voltage control
on models with CV-3 option). Place Amperage/Voltage Adjust switch in correct position.
Check connections to Remote 14 receptacle RC3 and terminal strip 3T (see Sections 4-7 and 4-8).
Repair or replace remote control device.
Have Factory Authorized Service Agent check optional CV-3 regulator board PC2.
Low CV weld output (models with CV-3
option). Set Ampere Range switch to highest range.
Min or max CV weld output only (models
with CV-3 option). Check position of Amperage/Voltage Adjust control and Amperage/Voltage Adjust switch.
Repair or replace remote control device.
Have Factory Authorized Service Agent check optional CV-3 regulator board PC2.
B. Auxiliary Power
Trouble Remedy
No output at auxiliary power ac
receptacles. Reset circuit breaker CB1 and/or CB2 (see Section 6-1).
Disconnect equipment from receptacles during start-up.
Have Factory Authorized Service Agent check brushes and slip rings.
No or low output at optional auxiliary
power plant. Place optional Output (Electrode) Control switch in On (Hot) position, or move switch to Remote posi-
tion and connect remote contactor to Remote 14 receptacle RC3 or terminal strip 3T (see Sections
4-7, 4-8, and 5-1).
Place optional Amperage/Voltage Adjust switch in Panel position, or move to Remote position and
connect remote amperage control to Remote 14 receptacle RC3 or terminal strip 3T (see Sections
4-7, 4-8, and 5-1)
Place optional remote amperage control in maximum position (see Section 5-3).
Place optional Process switch in Stick position (see Section 5-1).
Check fuses F1, F2, and F3 and replace as necessary (see Section 6-3).
Check engine weld/power speed, and adjust if necessary (see Section 7-8).