Temperature Control Board - Graco Reactor A-25 Repair Parts

Temperature Control Board

Temperature control board has seven green
LEDs. Power must be on to check. See F
location.
Table 2: Temperature Control Board LEDs
LED Status
D26 blinks
D14 on
D13 cycles on
and off
D18 on
D19 cycles on
and off
D27 on
D15 cycles on
and off
CAUTION
Before handling board, put on a static conductive wrist
strap to protect against static discharge which can
damage board. Follow instructions provided with wrist
strap.
1. Turn main power OFF
supply.
WARNING
Read warnings, page 8.
20
. 4 for
IG
Function
Board powered
Zone A turned on
Zone A powered, LED
cycles as temperature
cycles
Zone B turned on
Zone B powered, LED
cycles as temperature
cycles
Hose zone turned on
Hose zone powered, LED
cycles as temperature
cycles
. Disconnect power
2. Relieve pressure, page 11.
3. Refer to electrical diagrams. Temperature control
board is on left side inside cabinet.
4. Put on static conductive wrist strap.
5. Disconnect all cables and connectors from board,
F . 4.
IG
6. Remove nuts and take entire temperature control
assembly to workbench.
7. Remove screws and take board off heatsink.
8. Install new board in reverse order. Apply thermal
heatsink compound to mating surfaces of board and
heatsink.
Order Part No. 110009 Thermal Compound.
Table 3: Temperature Control Board Connectors
Connector Pin
J1 1, 2
3, 4
5, 6
7
8
9
10
11
12
13
14
J2 n/a
J5 n/a
J8 n/a
J9 n/a
J13 n/a
Description
Overtemperature switch A
Overtemperature switch B
Current sensor
Temperature sensor A, red
Temperature sensor A, yellow
Not used
Temperature sensor B, red
Temperature sensor B, yellow
Thermocouple, silver
Thermocouple, red
Thermocouple, purple
To A heaters
To display board
Data reporting
To B heaters
To heated hose
309813B
Repair