Miller DYNASTY DX, Техническое руководство

Страница: 23 / 80

TM-357 Page 21 Dynasty DX
Trouble Remedy
Check for proper input and output connections.
Replace electrode.
Check resistance and connections of remote amperage control potentiometer, and replace if
necessary.
Check input and output voltages of hall device HD1 (see Section 6-2). Replace HD1 if necessary.
Check control board PC1 and connections, and replace if necessary (see Section 6-4).
Prior to Serial No. KJ037293, no 24
volts ac output at Remote 14 recep-
tacle RC1. Reset circuit breaker CB2 if necessary (see Section 7-3).
Check receptacle wiring and connections.
No 115 volts ac output at optional du- Reset circuit breaker CB1 if necessary (see Section 2-7).
plex receptacle.
Check receptacle(s) wiring and connections.
Fan motor does not run after approxi- Check and clear blocked fan blade
mately four minutes of operation at
rated load.
Check thermistors RT1 and RT2 on display board PC3 (see Section 6-6).
Check fan motor FM, and replace if necessary.
Wandering arc; poor control of arc Use proper size tungsten.
direction.
Use properly prepared tungsten.
Reduce gas flow rate.
Tungsten electrode oxidizing and not
Shield weld zone from drafts.
remaining bright after conclusion of
weld.
Increase postflow time.
Check and tighten all gas fittings.
Water in torch. Refer to torch manual.