Rice Lake PW 500 Manuel de service télécharger pdf (Page 14)

4. Inspect side load strips (24) for tightness in base and signs of wear. Side strips should be replaced

when depth of wear exceeds 0.003 inch.

5. Inspect link retaining pins (47) for tightness in base and signs of wear.

6. At bottom of base assembly, check load strips (19) for tightness in base and signs of wear. Load strips

should be replaced when depth of wear exceeds 0.003 inch.

7. Using a torque wrench, tighten diaphragm retaining screws (46) to 50 inch-pounds.

8. Inspect behind diaphragm bead (27) for loose particles.

9. Inspect the nine link pivots (13) for flat spots.

10. Inspect piston load strips (18) and (19) for signs of unusual wear and resilient retainer (17) for fit.

11. Inspect piston (14) for nicks or burrs.

12. Inspect all load strip rollers (20) for straightness and flat spots.

13. Inspect all electrical connections for corrosion.

3.9 Lubrication

Prior to assembly, all unplated steel parts should be coated with grease or some rust-inhibiting agent. Side

buttons and load strip assemblies must be packed with Shell Darina AX or an equivalent extreme-pressure

grease.

3.10 Reassembly

After all parts have been cleaned and inspected, the weigher can be reassembled.

3.11 Installing the PC Board

Position the PC Board in the weigher and secure using the four screws (61). Connect the cables as shown with

the exception of the display connector.

3.12 Reassembling the Display Cover

The metal mating surfaces around the display cover and the base assembly must be sealed for environmental

protection. Reconnect the display cable. Place the display cover in position and install the holding screws

(50). After tightening the screws, place a small amount of silicone over the screw heads. Apply a thin film of

RTV silicone rubber compound around all mating surfaces.

3.13 Reassembling Links

Use the following procedure to reassemble the links. See Figure 5 on page 16 for location of numbered parts.

1. Replace the link bushings (15) into links (9) and (10) so that the small hole of bushing faces the

bottom of base assembly.

2. Pack grease into the piston load strip assembly (16) and the chamfered corners of the upper strip (18)

to the piston top.

3. Grease upper and lower link bearings (13).

4. Place links over retaining pins (47).

Note: Links must be returned to original position.

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Rice Lake PW 500 Manuel de service Page 14