Graco FOAM-CAT 200 Series, Instructions And Parts List

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29
308219
Service –
Heater Element
NOTE: If replacing the rear element, go to Step 16.
13. If the front heater element was replaced, tighten
the probe adapter (247c) just one turn.
14. Reposition the heater element tube on the rear
panel (240). Install the screw (235A) and lock-
washer (236A) into the manifold (253) through the
back of the manifold bracket front flange. Engage
a couple of threads.
15. Reinstall the screw (235B) and lockwasher (236B)
through the rear of the mounting bracket (234).
Tighten firmly and then finish tightening the front
screw and lockwasher.
NOTE: You may find it easier to position and install the
screws (235A and 235B) if one person holds up the
heater element tube while another person installs the
screws.
16. Remove the control panel cover (216). Guide the
wires of the heater up through the bottom of the
control box.
17. Remove the strap holding the heater. Position the
heater mounting bracket over the threaded shafts
of the cylindrical mounts (104 and 105). Install the
lockwashers (103) and nuts (102).
18. Connect the heating element wire to the Hi-Limit
Thermostat.
19. Reinstall the heater element and thermostat wires
at terminal block T1 of the circuit board. See Fig.
19 for the proper wire positions.
20. Reinstall the control panel cover (216).
CAL
RESIN HEATER
ISO HEATER
Fig. 19
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
HI-LIMIT
THERMOSTAT
ELEMENTS
CIRCUIT BREAKER
1
2
3
4
5
6
A A
B B
CAL
POWER IN
TERMINAL
BLOCK (TB)
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
HI-LIMIT
THERMOSTAT
ELEMENTS
CIRCUIT BREAKER
1
2
3
4
5
6
A A
B B
POWER IN
TERMINAL
BLOCK (TB)
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
Wiring Schematics
Heater No. 235840 is shown in
Fig. 19. The wiring for Heater
No. 235839 is identical
except
the second set of elements
(wires 9, 10, 19, 20) are not
used.
SENSOR
PROBE