Thermal Dynamics CUTMASTER 60i Service Manual

CUTMASTER 60i
Manual 0-5475 SERVICE
5-23
Fan runs only high speed prior to pressing the torch trigger:
J608-3, speed control wire, is typically 6-7V in high speed and pulled to near zero by the Inverter board for
low speed.
a. Measure J608-3(+) to J608-2 (or work lead), if near zero volts replace the fan. If higher, greater than 1V
(typically 6-7V), replace the Inverter board. If it is 24V it could be both Inverter and fan are bad.
Fan won’t run high speed:
Momentarily press the torch trigger (Start), fan should switch to high speed. J608-3 is typically 6-7V in high
speed.
a. Measure J608-3(+) to J608-2 (or work lead), if near zero volts replace Inverter board. If higher, greater
than 1V (typically 6-7V), replace the fan. If it is 24V could be both Inverter and fan are bad.
5. Gas Purge
At the end of the startup time, as the display is showing the amperage setting, gas should flow from the torch
for one to two seconds. This is a test to confirm gas is connected to the unit and the solenoid works.
The basic unit has an internal proportional solenoid, SOL1, which controls the gas flow/pressure. A-Series Au-
tomation units also control an on/off solenoid on the torch. It is activated the same time as SOL1. Whether or
not it is an automation unit, an LED, TORCH SOLENOID ON (D644), on the Inverter board illuminates when
the SOL1 should be on.
BLACK
RED
B
B
B
B
B
E E
E
WORK
PRI 2
F
F
D
D
PRI 1
BUS+
C612_2
GND_PRI
TIP
SEC 2
SEC 1
GND
SEC
PRI
SEC
PRI
SEC
PRI
SEC
PRI
PRI
SEC
TORCH SOL ON
OK TO MOVE
START
PIC OK
UP
ELECTRODE
SEC
PRI
SEC
PRI
SEC
PRI
PRI
SEC
PRI
SEC
PRI
SEC
SEC
PRI
SEC
PRI
K
B
PILOT GATE
R658
R655
R653
5
1
8
4
J603
J611
U610
Q602
+
C610
49
2
50
1
J602
T601
R705
D635
D633
+
C636
C630
C631
+
C633
C634
+
C656
+
C667
+
C608
D629 D631
3
1
6
4
J600
1
J601
1
J606
1
J608
1
10
9
18
J609
K600
Q603
Q605
Q606
Q608
R643
R647
R652
T600
1
U605
1
U607
1
U608
+
C669
4
8
1
5
J607
3
1
2
4
J610
C645
C648
C649
+
C614
+
C612
+
C613
+
C618
+
C619
+
C620
TP21
1
U618
1
J604
Art # A-13295
Art # A-13302
Torch
Sol On

Thermal Dynamics CUTMASTER 60i Specifications

General

Brand	Thermal Dynamics
Model	CUTMASTER 60i
Category	Welding System
Language	English