Miller Electric STR 350C Owner's Manual download pdf (Page 37)

OM-239 210 Page 33

8-2. Replacing Hub Assembly

805 351-A / Ref. 143 223-A

Remove gun top cover and release

pressure arm.

Retract wire onto spool and remove

spool. Take hub apart as shown.

1 Metal Brake Washer

2 Fiber Washer

3 Brake Washer

4 Hub

5 Keyed Washer

6 Spring

7 Flat Washer

8 Cap Screw

9 Retaining Ring

Replace broken or worn parts and

slide parts onto shaft as shown.

Adjust hub tension and thread

welding wire. Close and latch door.

Close gun pressure roll assembly

and reinstall gun cover.

Tools Needed:

7/16 in.

8-3. Diagnostics

The following error messages are shown on the upper and lower displays to indicate specific errors. Explanations are in the text below:

TRIG ERR Indicates a trigger error. A trigger error occurs if the user has the trigger held for more than two

minutes without striking an arc. This error also occurs if the trigger is held when the feeder is powered

up. The error may be cleared by releasing the trigger.

JOG ERR Indicates a jog switch error. A jog switch error occurs if the user has the jog switch held for more than

two minutes. This error also occurs if the jog switch is held when the feeder is powered up. The error

may be cleared by releasing the jog switch.

PURG ERR Indicates a purge switch error. A purge switch error occurs if the user has the purge switch held for

more than one minute. This error also occurs if the purge switch is held when the feeder is powered

up. The error may be cleared by releasing the purge switch.

COOL ERR Indicates a water flow switch error. A water flow switch error occurs if no water flow is detected while

the trigger is pressed. Jog and purge switches will behave normally even if no water flow is detected.

Dip switch 2 on motor control pcb must be set to enable this error. The error is cleared when water

flow is detected or when the error is disabled.

TEST ERR.1 Indicates a power on self diagnostic test error. The number provides information regarding the error.

If this error occurs, contact a Factory Authorized Service Agent.

COMM ERR Indicates a serial communication error. A communication error occurs 2 seconds after a loss of com-

munication between the motor control pcb and the front panel pcb.

G.CAL ERR.1 Indicates a gun calibration wire restriction error. This error occurs if the detected wire speed during a

calibration is too slow. This error will not prevent the feeder from operating, but wire speed accuracy

may be compromised. See section 8-4.

G.CAL ERR.2 Indicates a gun calibration wire slip error. This error occurs if the detected wire speed during a calibra-

tion is too fast. This error will not prevent the feeder from operating, but wire speed accuracy may be

compromised. See section 8-4.

1234 ERR.M Indicates a motor control pcb error. If this error occurs, contact a Factory Authorized Service Agent.

1234 ERR.F Indicates a front panel pcb error. If this error occurs, contact a Factory Authorized Service Agent.

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Miller Electric STR 350C Owner's Manual Page 37

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