Motor Control Board - Graco REACTOR E-20 Repair Manual

Motor Control Board

Motor control board has one red LED (D11 for
245980, D7 for 245981). Power must be on to
check. See F . 10 for location. Function is:
IG
• Startup: 1 blink for 60 Hz, 2 blinks for 50 Hz.
• Motor running: LED on.
• Motor not running: LED off.
• Diagnostic code (motor not running): LED
blinks diagnostic code (for example, E21=21
blinks).
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 6. Wait 5 min for stored voltage
to discharge (E-30 and E-XP2 models only).
2. Relieve pressure, page 9.
3. Refer to electrical diagrams. Motor control board is
on right side inside cabinet.
4. Put on static conductive wrist strap.
5. Disconnect all cables and connectors from board.
6. Remove nuts (42) and take entire motor control
assembly to workbench.
7. Remove screws and take board off heatsink.
34
. Disconnect power
8. Set DIP switch (SW2) on new board. See below for
factory settings. See F
WARNING
Read warnings, page 6. To prevent overpressuriza-
tion, DIP switch 2 must be set to ON for Models E-20
and E-30.
• Switch 1: not used.
• Switch 2: ON for Models E-20 and E-30, OFF
for Models E-XP1 and E-XP2.
• Switch 3: ON for pressure imbalance alarm,
OFF for pressure imbalance warning.
• Switch 4: not used.
9. Install new board in reverse order. Apply thermal
heatsink compound to mating surfaces of board and
heatsink.
Order Part No. 110009 Thermal Compound.
Table 2: Motor Control Board Connectors
Model Model
E-20 E-30
and and
E-XP1 E-XP2 Pin
J1 N, L n/a
J3 J3 n/a
J4 J1 n/a
J7 J6 1, 2
3
J8 J5 n/a
J10 J7 1-4
5, 6
7-10
J12 J12 n/a
J13 J13 n/a
Repair
. 10 for location on board.
IG
Description
Main motor power
Transducer A
Motor output
Motor thermal overload
signal
Brush wear signal
Transducer B
Not used
Cycle switch signal
Jumper 15C866 (avail-
able in repair kit 246961)
Data reporting
To display board
309574L