Graco 249881, 246008 instruction manual Replacing the Meter Electronics

Service

Replacing the Meter Electronics

Electronics Repair Kits 246675 for meter 246008 and 249882 for meter 249881 are available for replacing the Matrix meter electronics. See the Parts List for the 246008 and 249881 Electronic Meters on page 33. The parts with a † next to their reference numbers are included in the Electronics Repair Kit.

When repairing the meter using the Electronics Repair kit be sure to use all of the new parts. To replace the electronics do the following.

The PSM switch (101) comes attached to the right meter cover half (18). Do not remove it during the meter electronics repair procedure.

CAUTION

Be sure to use the disposable grounding wrist strap included with the repair kit. Static electricity can dam- age the electrical components within the meter dur- ing the repair.

1.Relieve the Pressure.

WARNING

To reduce the risk of serious injury whenever you are instructed to relieve pressure, always follow the Pressure Relief Procedure on page 8.

1.Remove the battery (11). See Parts Drawing for the 246008 and 249881 Electronic Meters on page 32.

2.Slide the rear boot (24) off the hose.

3.Remove the meter from the fluid hose.

4.Remove the impact guard (40) from the meter.

5.With a phillips screwdriver remove the four phillips screws (42) holding the bezel to the cover halves (18 & 19). See FIG. 41.

6.With a T-10 torx driver remove the remaining eleven screws (12) holding the cover halves together (18 & 19).

12

42 (both sides)

FIG. 41

7.Pull apart the two cover halves leaving all parts in the right cover half (18).

All services to the meter should be done using the right cover half (18) of the meter. If parts should disen- gage as the covers are separated, reposition the parts back into the right cover half (18). See FIG. 42.

19

18

FIG. 42

8.Place the new right cover (18) along side of the meter.

9.Remove the trigger assembly (13, 14, 22, 23, 36, & 37) from the old cover (18) and set aside.

10.Remove the meter housing from the old right cover (18).

11.Disconnect the cables/wires (A, B, C, & D) that con- nect the bezel (31) to the circuit board (112) and the valve housing to the circuit board. See FIG. 43.

28 309497L