Miller Electric SRH-222 Owner's Manual download pdf (Page 27)

OM-201 444 Page 23

6-2. Overload Protection

Ref. ST-802 927

1 Circuit Breaker CB1

CB1 protects the welding power

source control circuit from over-

load. If CB1 opens, weld output

drops to the minimum of the range

selected.

Press button to reset circuit

breaker.

6-3. Troubleshooting Table

Trouble Remedy

No weld output; unit completely

inoperative.

Place line disconnect switch in On position (see Section 4-12B).

Check and replace line fuse(s), if necessary, or reset circuit breaker (see Section 4-12B).

Check for proper input power connections (see Section 4-12B).

Check for proper jumper link position (see Section 4-12A).

No weld output. Clean and tighten all weld connections (see Section 6-1).

Unit provides only low or minimum

weld output.

Check for proper line voltage.

weld output.

Check for open line fuse(s), and replace if necessary. Check and replace circuit breakers (see Sec-

tion 4-12B).

Clean and tighten all weld connections (see Section 6-1).

Place Remote Amperage switch in correct position (see Section 5-3).

Select correct size weld cables (see Section 4-8).

Low weld amperage; Amperage Ad-

justment does not control amperage.

Reset circuit breaker CB1, if necessary (see Section 6-2).

Maximum weld output. Have Factory Authorized Service Agent check Amperage Adjustment control.

Erratic or improper weld output. Check for proper input power connections.

Clean and tighten all weld connections (see Section 6-1).

Use proper size and type electrodes.

Excessive line current or line fuse(s)

open repeatedly.

Check for proper input power connections (see Section 4-12B).

open repeatedly.

Check for proper jumper link position (see Section 4-12A).

Fan not operating and/or over heating. Check for and remove anything blocking fan movement.

Replace fan motor, if necessary.

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Miller Electric SRH-222 Owner's Manual Page 27

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