Hobart Welding Products OM-474 manual Auxiliary Power

Trouble	Remedy
	Have Factory Authorized Service Agent check field current regulator board PC1.
Low open-circuit voltage.	Place optional Process switch in correct position (see Section 5-1)
	Check engine weld/power speed, and adjust if necessary (see Section 7-5).
	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-	Have Factory Authorized Service Agent check Amperage/Voltage Adjust control R1, capacitor C8,
pere range.	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	Check connections to Remote 14 receptacle RC3 and terminal strip 3T (see Sections 4-7 and 4-8).
control or CV-3 option only).
	Repair or replace remote control device.
	Have Factory Authorized Service Agent check connector board PC5 and connections.
Wire feeder does not work (models with	Reset circuit breaker CB3 and/or CB4 (see Section 7-7).
CV-3 option).
	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	Place Amperage/Voltage Adjust switch in correct position.
on models with CV-3 option).
	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 Amperage/Voltage Adjust control R1 and optional CV-3
	regulator board PC2.
Low CV weld output (models with CV-3	Set Ampere Range switch to highest range.
option).
Min or max CV weld output only (models	Check position of Amperage/Voltage Adjust control and Amperage/Voltage Adjust switch.
with CV-3 option).
	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	Reset circuit breaker CB1 and/or CB2 (see Section 6-1).
receptacles.
	Disconnect equipment from ac receptacles during start-up.
	Have Factory Authorized Service Agent check brushes and slip rings.
High or low voltage at auxiliary power	Check engine weld/power speed, and adjust if necessary (see Section 7-5).
ac receptacles.
	Have Factory Authorized Service Agent check field current resistor R3.
No or low output at optional auxiliary	Place optional Output (Electrode) Control switch in On (Hot) position, or move to Remote position and
power plant.	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 7-5).

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