31
308219
Service –
Circuit Board
Reassembly
1.
Apply conductive paste (Graco P/N
110009) to the bottom flange of the triac
(223a or 306a). Position the triac as
shown in Fig. 20. Use the screws (291 or
336) and lockwashers (292 or 337) to
mount the triac to the back of the control.
2.
Position the new circuit board in the
control box. Install the screws (284 or
335), starting the first screw at the lower
front corner. After each screw is started,
snug them tightly.
3.
Plug in the triac wires, if not plugged in.
See Fig. 13, page 25. Verify the triac
wiring with the label (276) located inside
the control box. See Fig. 20, page 30.
NOTE:
See
Setup
on page 20 for how to
reconnect the wires.
4.
If used, plug the ATC connector (T) into
the circuit board position J1. Otherwise,
make sure the 2 pin connector is
installed at J1 with the 47.5K resistor.
See Fig. 20 and 21.
5.
Reinstall the heater element wires into
terminal block T1, in the positions indi-
cated in Fig. 21.
6.
Plug the indicator light leads (214 or 314)
into the rear of the indicator light. See
Fig. 20 and 21.
7.
Plug in the wires leading to the TEMP
SET dial (213 or 315). See Fig. 20 and
21.
8.
Plug the sensor probe connector P2 into
the circuit board at position J2. See Fig.
20 and 21.
9.
Reinstall the control panel cover (216 or
317) and tighten the screws firmly.
–
RESIN HEATER
ISO HEATER
Fig. 21
OPTIONAL ATC
P1
OPTIONAL
P1
STANDARD
P2
CONNECTOR
N.T.C
TEMP DIAL
A
B
J2
J1
G
MT2
MT1
M–
M+
WHT
WHT
BLK
BLK
4
3
2
1
–
–
+
+
LAMP
BOARD
A
B
C
LIMIT
THERMOSTAT
ELEMENTS
CIRCUIT BREAKER
1
2
3
4
5
6
A
A
B
B
CAL
OPTIONAL ATC
P1
OPTIONAL P1
STANDARD
P2
CONNECTOR
N.T.C
TEMP DIAL
A
B
J2
J1
G
MT2
MT1
M–
M+
WHT
WHT
BLK
BLK
4
3
2
1
–
–
+
+
LAMP
BOARD
A
B
C
LIMIT
THERMOSTAT
ELEMENTS
CIRCUIT BREAKER
1
2
3
4
5
6
A
A
B
B
CAL
POWER IN
TERMINAL STRIP
TRIAC
SENSOR
PROBE
10
8
9
1
2
11
12
7
D
C
T1
+ +
+ +
TRIAC
D
C
T1
+ +
+ +
3
4
21
22
19
18
20
Heater No. 235840 is shown in Fig. 21. The wiring for
Heater No. 235839 is identical
except
the second set of
elements (wires 9, 10, 19, 20) are not used.
Wiring Schematics
OPTIONAL
ATC
P1
OPTIONAL
P2
CONNECTOR
TEMP DIAL
A
B
J2
J1
G
MT2
MT1
M–
M+
WHT
WHT
BLK
BLK
4
3
2
1
–
+
+
LAMP
BOARD
A
B
C
1
2
3
4
5
6
A
A
B
B
CAL
POWER IN
TERMINAL STRIP
A
B
HOSE
SENSOR
SIMULATOR
GFI
HOSE
CONNECTOR
TRIAC
D
C
T1
POWER IN
TERMINAL STRIP
HOSE HEATER
P1
STANDARD
+ +
SENSOR
PROBE
Summary of Contents for FOAM-CAT 200 Series
Page 33: ...33 308219 Notes...
