Mettler Toledo PS6L Specifications download pdf (Page 58)

Chapter 5 : Service and Repair

5-9 (08/04)

a. Pull processor out of the socket by the use of a chip puller. Insert chip

puller under the processor at one of the corners and pull up.

b. Position new processor above the PCB socket so the beveled corner of the

processor is lined up with the bevel corner of the socket. Carefully press

processor into socket.

10. Replace loadcell harness in reverse fashion to step 5.

11. Install display cable and communication cable (USB or RS232) to the scale

connector ports.

12. Install PCB cover, and power up scale. An Error 3 code will appear indicating the

scale needs to be reprogrammed and re-calibrated. Press UNITS key and hold to

access Setup mode. Enter required set up data and calibrate the scale per Chap 4.

Load Cell

Replacement

For load cell replacement, please use correct load cell part number equivalent to the

capacity on the data label. Contact Mettler Toledo Technical Service if you are not sure

of the correct part number.

To change out the load cell:

1. Remove power from the scale and remove platter

2. Make sure you are statically grounded with appropriate wrist wire or other means.

3. Remove spider from the load cell by:

a. PS15: Use 5 mm Hex wrench to remove two socket head bolts on top of

spider. Remove white plastic cover on spider.

b. PS60,6L,30, and 3L: Use 6 mm Hex wrench to remove two socket head

bolts on top of spider

c. PS90: To expose loadcell bolts, remove 4 small black rubber covers on

the center ridge of the top plate. Bolts are approximately 1 inch (2.5 cm)

apart from each other. Use 5 mm Hex wrench to remove the 4 socket

head bolts.

4. Remove PCB cover. Note, the scale connectors are attached to the PCB.

a. PS15 : Turn scale over, remove bolt, push on sides of plastic cover to

release the cover tabs from the base slots.

b. PS60, 6L, 30 & 3L: On the top of the scale, unscrew the bolt that holds

the PCB cover to the scale. Lift off cover.

c. PS90: Unloosen the two screws holding the connector/PCB cover to the

scale base. PCB board is attached to the cover.

5. Remove load cell harness from connector on PCB board (upper right corner – see

photo in previous section).

a. PS60, 6l, 30, 3L, and 15: Carefully pull up black tabs on each side of

connector and pull ribbon harness out.

b. PS90: Pull up on white tabs of harness connector.

6. Turn scale over to access the bottom load cell bolts, and remove load cell from the

scale base.

a. PS15: Use 5 mm Hex wrench to remove two bolts on bottom of base by

the load cell harness.

b. PS60,6L, 30, and 3L: Use 6 mm Hex wrench to remove two bolts on

bottom of scale base.

c. PS90: To expose load cell bolts, remove 4 small black rubber covers on

the center ridge under the bottom plate. Bolts are approximately 1 inch

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Mettler Toledo PS6L Specifications Page 58

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