Hypertherm HyDefinition HD3070 - Page 145

5-20 HD3070 with Automatic Gas Console Instruction Manual
16
MAINTENANCE
OVERTEMP LED lit
Replace temperature
switch TS1 or TSW1.
Check temperature
switch wiring and
receptacle connections.
Allow to cool & operate
within rated duty cycle.
Allow to cool &
operate within
temperature range.
Replace fan M2
or M3.
Yes
No
Yes
Yes
Yes
Yes
No
No
Is
transformer T2 or
chopper
overheated
?
Was power supply
operated within rated
duty cycle
?
Was power supply
operated above ambient
temp
?
Is transformer T2
temperature switch TS1 or
chopper temperature switch
TSW1 defective ?
Is cooling fan M2
(chopper) or M3
(transformer)
defective ?
Allow for
recommended
clearances for
proper air flow.
Yes
No
Is cool air intake
or exhaust blocked
?
No