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Installing the Cabinet on the ESD Protection Floor. Positioning the Cabine. Positioning an Independently Installed Cabinet. Positioning a Cabinet Close to Another One, страница 5

Step

Operation

1

Screw off 3 pan head screws on a foot assembly at the bottom of the cabinet to demount the foot assembly, as shown in Figure 3-13. Repeat the action to demount the other 3 foot assemblies.

& Note:

If the feet have been installed on the cabinet before delivery, demount them before installing the cabinet.

2

Lay insulation plates on the slide rail below the cabinet (two insulation plates for each cabinet), as shown in Figure 3-14 (a).

3

Place the cabinet on the support. In doing so, three persons are needed because the cabinet is heavy. The cabinet should be arranged in such a direction as required in the engineering design drawing. It should be placed close to the adjacent equipment, and aligned with the latter to form a straight line at the side of main path.

 Caution:

In installing the cabinet side by side with another one of a different type and size, first install its side panels.

4

Add gaskets between the insulation plates and the support to adjust the levelness of the cabinet, as shown in Figure 3-14 (b). Place a gradienter respectively at the two directions that are vertical to each other on the top of the cabinet to see whether the cabinet is placed in perfect levelness.

 Caution:

Inserting the gasket for leveling purpose between the insulation plates and the cabinet cannot guarantee insulation between the cabinet and the floor.

5

Cover the bolt M12 x 35 with an insulation washer. Insert it vertically, through the lower enclosure frame of the cabinet, into the connecting hole of the slide rail, and equip it with a flat washer and a nut, as shown in Figure 3-14 (c). Each cabinet should be fixed with 4 bolts. Tighten the bolts with a force of up to 45 N·m.

6

 Caution:

Tighten the bolts alternatively to reduce the stress between them and the cabinet.

7

Measure the resistance between the support and the cabinet. The normal resistance should be larger than 5 MW. If the measured resistance is less than 5 MW, demount the cabinet and check the insulation components. Then repeat the operations from step 2.

8

Fix the horizontal pallet and side pallets to the support with bolts M12 x 35, as shown in Figure 3-15.

9

Cut and restore the ESD floor according to the peripheral circumstances of the cabinet.

1. Foot assembly

2. Pan head screw

3. Cabinet

Figure 3-13 Demount feet of the cabinet


1. Cabinet

2. Insulation plate

3. Slide rail

4. Support

5. Gasket

6. Bolt 12 x 35

7. Spring washer M 12

8. Flat washer M 12

9. Insulation washer

10. Nut M 12

Figure 3-14 Level and secure the cabinet

1. Cabinet

2. Support

3. Fixing bracket for horizontal pallet

4. Horizontal pallet

5. Bolt M12 x 30

6. Fixing bracket for side pallet

7. Side pallet

Figure 3-15 Install the floor pallet

3.4.2  Installation Check

Figure 3-16 shows how the installed cabinet shall look. For any technical issues, contact the local office of Huawei promptly.

1. Cabinet

2. Frame of the ESD floor

3. Pallet of the ESD floor

Figure 3-16 Expected result of installation on the ESD floor

3.5  Installation Check Points

The properly installed cabinet should meet the following requirements:

n  The cabinet is placed according to the engineering design drawing.

n  All bolts for fixing the support and floor, and the support and cabinet are installed correctly and firmly. The sequence for installing the spring washer and flat washer is correct.

n  If the support and cabinet are accompanied by insulation parts, insulation between the support and cabinet should meet the requirements. If the user makes a mount base, it should be insulated from the floor or cabinet.

n  All cabinets are arranged closely and neatly, with the vertical deviation of less than 3 mm.

n  After the doors (facing the main path) of the cabinet are installed, they are aligned in a line with a horizontal deviation of less than 5 mm.

n  Surfaces of the racks in a row are on the same plane. The cabinets are arranged closely and neatly in a line.

n  All bolts on the cabinet are equipped with flat washers and spring washers, and all are screwed tight.

n  No part of the cabinet is distorted, affecting the appearance of the cabinet.

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