Hypertherm MAX200 Service Manual - Manual (Page 52)

MAX200 Service Manual 3-11
MAINTENANCE
From
page 3-10
Main Contactor (CON1) closes,
pilot arc relay (CR1) closes,
power to high voltage transformer (T5),
high frequency sparking and pilot arc initiated.
DC ON lights, D21 (Chopper1),
D22 (Chopper 2) on PCB7 light.
Arc transfer sensed,
D8 (Xfer) on PCB7 lights,
pilot arc relay (CR1) opens,
power off to high voltage transformer (T5),
high frequency and pilot arc off.
Step valve (V3) and quick-charge valve (V9) on.
PS4 opens, quick-charge valve (V9) off.
Machine motion starts
(machine torch only).
Cutting begins.
To
page 3-12
Transfer of
arc?
Yes
No
THC
installed?
Yes
No
Machine
motion delay,
D31 on PCB9
active