Display Module - Graco Reactor A-25 Repair Parts

Display Module

Temperature and Cycle Counter Displays
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.
2. Relieve pressure, page 11.
3. Refer to electrical diagrams.
4. Put on static conductive wrist strap.
5. Disconnect main display cable (120) at lower left
corner of display module, F
6. Remove screws (409, 410) and cover (404).
32
. Disconnect power
. 11.
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If replacing both displays, label temperature dis-
play cables TEMP and cycle counter display
cables CYCLES before disconnecting.
7. Disconnect cable connectors J1 and J13 from back
of temperature display (402) or cycle counter dis-
play (401).
8. Disconnect ribbon cable (R) from back of display.
9. Remove nuts (408) and plate (405).
10. Disassemble display, see detail in F
11. Replace board (401 or 402a) or membrane switch
(402b) as necessary.
12. Reassemble in reverse order, see F
medium strength thread sealant where shown. Be
sure display cable ground wire (G) is secured
between cable bushing and cover (404) with screws
(412), F . 11. Also check ground connection at rear
IG
of Reactor, see below.
G
Repair
. 11.
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. 11. Apply
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TI2603a-2
309813B