Graco 249570 A, Instructions-Parts List Manual

Page: 43 / 68

Repair
311075ZAB 43
Fluid Heaters (if supplied)
See your heater manual for repair and parts information,
which is supplied with heated units.
1. Follow Before Beginning Repair , page 36.
2. Follow the Pressure Relief Procedure , page 22.
3. The control section of the heater can be repaired in
place. Remove the heater to clean the fluid section.
See your manual for repair and parts information.
Pressure Transducers
1. Follow Before Beginning Repair , page 36.
2. Follow the Pressure Relief Procedure , page 22.
3. Remove the access cover (39) at the back of the
control module to expose control board (406).
4. Disconnect the transducer cables from J3 and J8 at
the board. See F
IG
. 14, page 42. Reverse A and B
connections and check if the status code follows the
bad transducer. See
Status Code 3: Transducer A
Failure , page 31.
5. Reconnect the good transducer to the proper
connector. Disconnect the failed transducer from
the board, and unscrew from the base of the fluid
heater (heated units) or transducer manifold
(nonheated units).
6. Install the o-ring (60) on the new transducer (58),
F
IG
. 15, page 43.
7. Install the transducer in the heater or manifold. Mark
the board end of cable with tape (red= transducer A,
blue= transducer B).
8. Route the cable through the channel to the control
module.
9. Connect the transducer cable at the board; see F
IG
.
14, page 42.
F
IG
. 15 Transducers
60 58
Heated Units
Nonheated Units
60 58
TI7026a
TI7027a