Verification And Remedy To The Indicated Error Codes; E01 "Over-Temperature At The Primary Side - Thermal Arc ARCMASTER 300S Service Manual

300/ 400TS and 300/ 400S
6) Remove protection cover sheet by removing
the plastic tabs.
Fi gur e11-6: R em ove PCB cover
N O TE
W hen you r e- assem bl e t he par t s, conduct t he
above pr ocess backw ar ds.
2
Veri f i cat i on and R em edy t o
t he I ndi cat ed Error C odes
N O TE
The capaci t or s i nsi de t he pow er suppl y w i l l sl ow l y
di schar ged af t er you t ur n of f t he sw i t ch of t he
pow er suppl y or t he sw i t ch at t he br eaker box ( di s-
t r i but i on panel ) . W ai t at l east 5 m i nut es f or t he di s-
char ge t o com pl et e and t hen r em ove t he cases t o
cont i nue your i nspect i on and r epai r ( or m ai nt e-
nance) i nsi de t he pow er suppl y. Refer to section
11.1.1 for the removal and i nst al l at i on of t he case.
N O TE
D ur i ng t he " Ver i f i cat i on/ R em edy" pr ocedur es
bel ow , f ol l ow t he al phabet i cal sequence ( a, b, c. . . )
and pr oceed w i t h your ver i f i cat i on and conf i r m a-
t i on.
N O TE
Af t er you conf i r m and r epl ace al l spar e par t s and
com ponent s, conf i r m t hat t her e ar e no dam aged
har nesses or connect or s, and no uni nst al l ed
or loose scr ew s.
11
A D VA N C ED TR O U B LESH O O TI N G
2. 1 E01 "O ver - Tem per at ur e at
t he pr i m ar y si de"
C ause
Occurs when an over-temperature condition of the
primary IGBT is detected.
Veri f i cat i on/ R em edy
a) Unit may be in thermal shutdown mode.
Review the rated duty cycle of the unit per
section 3.8. Exceeding the duty cycle can
damage the unit and void the warranty. Refer
to Limited Warranty at the end of the manual.
b) Verify the ventilating condition.
Maintain a clear and unobstructed distance
of more than 12 in. in the front and more that
20 in. in the rear of the unit for ventilation pur-
poses.
Verify and maintain clean, dust free, front and
rear airflow paths. Cleaning and removing
dust from the front and rear panels once
every six months in a normal working envi-
ronment is recommended. Extremely dusty
environments will require more frequent
cleanings.
c) Verify the operation of the cooling fan, FAN1,
and replace it if necessary.
Verify the condition of FAN1. Verify that there
are no broken or cracked fan blades and that
FAN1 is not producing any abnormal sounds.
If broken or cracked FAN1 blades, or abnor-
mal sounds are emanating from FAN1,
replace FAN1.
Verify the operation of the cooling fan and
replace it if the condition of FAN1 is inactive.
Refer to section 12.3.21 for the replacement
of FAN1.
Refer to section 11.5.3 for additional FAN1
tests.
d) Replace PCB6 (WK-5549).
Refer to section 12.3.6 for the replacement of
PCB6.
11 – 3