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5 Installing the BTS3812E CabinetAbout This Chapter

You need to install the BTS3812E cabinet in compliance with the field situation of the equipment

room.

5.1 Installing the BTS3812E Cabinet on the Concrete Floor with Sufficient Load Capacity

This part describes how to install the BTS3812E cabinet on the concrete floor with sufficient

load capacity of greater than 5,500 N/m2.

5.2 Installing the BTS3812E Cabinet on the ESD Floor

Installation of the cabinet on the ESD floor varies with the type of the floor. This topic describes

a commonly used method of installing the BTS3812E cabinet.

5.3 Installing the BTS3812E Cabinet on Concrete Floor with Insufficient Load Capacity

This topic describes how to install the BTS3812E cabinet on the concrete floor with insufficient

load capacity of less than 5,500 N/m2.

BTS3812E

Installation Guide 5 Installing the BTS3812E Cabinet

Issue 03 (2008-01-30) Huawei Proprietary and Confidential

Copyright Huawei Technologies Co., Ltd

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5.1 Installing the BTS3812E Cabinet on the Concrete Floorwith Sufficient Load Capacity

This part describes how to install the BTS3812E cabinet on the concrete floor with sufficient

load capacity of greater than 5,500 N/m2.

Context

CAUTION

If the floor of the equipment room is made of precast slabs, do not install multiple cabinets on

one slab, as shown in Figure 5-1.

Figure 5-1 Installation directions of the cabinets

(1) Cabinet (2) Direction of the precast slab (3) Precast slab

Procedure

Step 1 Determine the position for installing the cabinet.

1. Determine the position for installing the cabinet according to the engineering design andreferring to 2.3 Space Requirements for Installing the BTS3812E.

2. Place the installation position mark template. Figure 5-2 shows the template.

NOTE

The direction of the template with a gap represents that of the front door of the cabinet.

5 Installing the BTS3812E Cabinet

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Figure 5-2 Template for marking installation positions (unit: mm)

(1) Edge of the outer side of the lower frame (2) Anchor point for the expansion bolt

3. Mark four anchor points for the expansion bolts and for edges of the outer side of the lower

frame.

4. Use a percussion drill with a 16 bit to make holes at the anchor points.

CAUTION

You need to take proper measures to protect your eyes and respiratory tract against the dust

before drilling holes.

NOTE

The depth of the holes must range from 52 mm to 60 mm. All the holes must be in the same depth.

5. After drilling holes, measure the distance between the holes. If there is a big error between

them, relocate and drill new holes.

Step 2 Install and adjust the lower frames.

1. Clean the dust both inside and around the holes by using a cleaner.

2. Measure the distance between holes. Ensure that the holes in the floor and those in the

support can match each other. If there is a big error between the holes, relocate and drill

new holes before inserting the bolts.

3. Insert the expansion bolt assembly into the holes and hammer them until the expansion

tubes are buried into the holes, as shown in Figure 5-3.

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Figure 5-3 Installing the expansion bolt assembly

(1) Bolt M12 x 60 (2) Spring washer 12 (3) Flat washer 12 (4) Expansion tube

(5) Guiding slot (6) Guiding rib (7) Nut

CAUTION

Ensure that the guiding ribs on the nut are inserted into the guiding slots of the expansion

tube before you install the bolt.

4. Remove the bolt M12 x 60, spring washer 12, and flat washer 12, as shown in Figure

5-4.


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Figure 5-4 Disassembling the expansion bolt assembly

5. Put the lower frames on the ground. Then align the holes on the frames with the holes on

the ground, as shown in Figure 5-5.

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Figure 5-5 Installing the lower frames (unit: mm)

(1) Lower frame (2) Bolt M12 x 60

(3) Spring washer 12 (4) Flat washer 12

(5) Insulating washer (6) Insulating spacer

(7) Adjusting pad (8) Bolt for fixing the upper and lower frames

6. Lead the bolt M12 x 60 through the spring washer, flat washer, and insulating washer, route

the bolt through the lower frame and insulating spacer, and then insert the bolt into the nut

in the floor, as shown in Figure 5-5.

7. Put on the bolts. Ensure that the distance between the outer surfaces of the two lower frames

is from 527 mm to 528 mm. Then, tighten the bolts crosswise until the fastening torque is

45 Nm.

8. Measure and adjust the levelness of the lower frames.

NOTE

Put a level bar at the top of the lower frames to measure the levelness of them. If the lower frames

are not level, adjust them by adding adjusting pads between the lower frames and the insulating

spacers.

Step 3 Test the insulation between the lower frames and the expansion bolt.

1. Set the multimeter to the megaohm position.

2. Test the resistance between the lower frames and the expansion bolts, as shown in Figure

5-6.

l If the resistance is smaller than 5 megaohms, the lower frames are not insulated from

the ground. Go to Step 3.3.


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l If the resistance is greater than 5 megaohms, the lower frames are insulated from the

ground and the test is passed. Go to Step 4.

Figure 5-6 Testing the resistance between lower frames and expansion bolts

(1) Lower frame (2) Bolt M12 x 60 (3) Multimeter

3. Disassemble all the expansion bolts.

4. Check whether there are insulating washers missed or damaged.

l If there are insulating washers missed or damaged, reinstall them and level the lower

frames.

l If there are no insulating washers missed or damaged, check whether the multimeter is

faulty or whether the setting is correct.

Step 4 Secure the cabinet.

NOTE

The upper frames have been assembled at the bottom of the BTS3812E cabinet before delivery.

1. Place the cabinet on the lower frames and ensure that the upper frames are on the lower

frames.

2. Push the cabinet along the guide rails until the upper and lower frames fit properly.

3. Use two bolts to secure the upper and lower frames, as shown in Figure 5-7.

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Figure 5-7 Securing the upper and lower frames

(1) Cabinet (2) Upper frame (3) Flat washer 12

(4) Spring washer 12 (5) Bolt M12 x 30 (6) Lower frame

4. Tighten the panel screw assemblies after installing the cover board, as shown in Figure5-8.


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Figure 5-8 Tightening the panel screw assembly

(1) Cabinet (2) Bolt for fixing the upper and lower frames

(3) Cover board (4) Screw assembly M6 x 20

----End

5.2 Installing the BTS3812E Cabinet on the ESD FloorInstallation of the cabinet on the ESD floor varies with the type of the floor. This topic describes

a commonly used method of installing the BTS3812E cabinet.

Context

CAUTION

l

If the floor of the equipment room is made of precast slabs, do not install multiple cabinetson one slab, as shown in Figure 5-9.

l Try to keep the A600 support away from the ESD floor framework when you select a

position for the cabinet. If the cabinet has to be installed on the position where the floor

framework lies, remove the corresponding framework. It is recommended that the first

cabinet be aligned with the edge of the floor.

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Figure 5-9 Installation directions of the cabinets

(1) Cabinet (2) Direction of the precast slab (3) Precast slab

Figure 5-10 shows the structure of the support of A600 series.

Figure 5-10 Structure of the support of A600 series

(1) Access holes (2) Upper frame (3) Lower frame (4) Mounting hole

There are four types of supports of the A600 series. Three of them are height-adjustable and one

is height-fixed. Table 5-1 lists the relationship between the four types of supports and the height

of the ESD floor.

Table 5-1 Relationship between the supports and the height of the ESD floor

Type of theSupport

Applicable Height of the ESD Floor (unit: mm)

I 195 to 230

II 231 to 300


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Type of theSupport

Applicable Height of the ESD Floor (unit: mm)

III 301 to 445

IV At least 140 mm, depending on the actual floor height

NOTE

Height of the ESD floor refers to the spacing between the concrete floor and the upper surface of the ESD

floor.

Procedure


1. Determine the position for installing the cabinet according to the engineering design and

referring to 2.3 Space Requirements for Installing the BTS3812E.

2. Place the marking template as shown in Figure 5-11 to the ESD floor.

NOTE

The direction of the template with a gap represents that of the front door of the cabinet.

Figure 5-11 Template for marking installation positions (unit: mm)

(1) Edge of the outer side of the lower frame (2) Anchor point for the expansion bolt

3. Mark four anchor points for the expansion bolts and for edges of the outer side of the lower

frame.


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CAUTION



NOTE




Step 2 Position the support.

1. Place the support under the ESD floor, and use bolts to secure the floor with the support

temporarily, as shown in Figure 5-12.

CAUTION

Align the central holes in the support with the holes in the floor and ensure that the support

does not extend out of the cabinet.

Figure 5-12 Connecting the support and the ESD floor

(1) Central holes (2) ESD floor

2. Mark the position of all the four holes on the concrete floor.

3. Move away the support.


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CAUTION

Ensure that the depth of the holes ranges from 52 mm to 60 mm.



Step 3 Secure the support.





3. Insert the expansion bolt assembly into the holes and hammer them until the expansion

tubes are buried into the holes, as shown in Figure 5-13.


(1) Bolt M12 x 60 (2) Spring washer 12 (3) Flat washer 12 (4) Expansion tube

(5) Guiding slot (6) Guiding rib (7) Nut

CAUTION



4. Remove the bolt M12 x 60, spring washer 12, and flat washer 12, as shown in Figure5-14.

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5. Adjust the support to a specified height, adjust the height locking bolt to prevent the support

from falling down. Then align the holes in the support with those in the floor.

6. Lead each bolt M12 x 60 through the spring washer 12, the flat washer 12, and the hole in

the support, and then insert the bolt into the nut in the floor.

7. Align the hole in the ESD floorwith the hole in the support, lead the bolt M12 x 70 through

the flat washer 12 and spring washer 12 in turn, and then insert the bolt into the hole in the

floor, as shown in Figure 5-15.

8. Hammer the support slightly to get the ESD floor into full contact with the upper surface

of the support, and then remove the bolt M12 x 70, as shown in Figure 5-15.


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Figure 5-15 Installing the A600 support under the ESD floor

(1) ESD floor

(2) Bolt M12 x 70

(3) Spring washer 12

(4) Flat washer 12

(5) Height locking bolt (side)

(6) Height locking bolt (middle)

(7) Bolt M12 x 60

9. Use a torque wrench to tighten the expansion bolts crosswise until the fastening torque

reaches 45 Nm.

10. Use a torque wrench to tighten the height locking bolts of the support until the fastening

torque reaches 45 Nm.

CAUTION

Tighten the locking bolts on the support from middle to periphery.


1. Remove the four bolts and washers that connect the ESD floor with the support.

2. Put insulating spacers and lower frames on it.


NOTE

Use a level bar to measure the levelness of each section on the lower frames. If the lower frames are

not level, adjust them by adding adjusting pads between the lower frames and the insulating spacers.

4. After the lower frames are properly adjusted, add a spring washer 12, flat washer 12, andinsulating washer to each of the four bolts M12 x 70, and lead the bolts through the lower

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frame, insulating spacer, ESD floor, hole in the support, and nut, as shown in Figure

5-16.


(1) Lower frame (2) Bolt M12 x 70

(3) Insulating washer (4) Insulating spacer

(5) Adjusting pad

5. Put on the bolts. Ensure that the distance between the outer surfaces of the two lower frames

is from 527 mm to 528 mm. Then, tighten the bolts crosswise until the fastening torque is45 Nm.




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frames.




NOTE



frames.



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Figure 5-18 Installing the cabinet on the ESD floor

(1) Bolt M12 x 30 (2) Spring washer 12

(3) Flat washer 12 (4) Cover board

(5) Screw assembly M6 x 20

4. Tighten the panel screw assemblies after installing the cover board, as shown in Figure

5-19.


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----End

5.3 Installing the BTS3812E Cabinet on Concrete Floor withInsufficient Load Capacity


load capacity of less than 5,500 N/m2.

Context

Before installing the cabinet on the concrete floor with insufficient load capacity, you need to

reinforce the load capacity of the building. In this situation, either of the following methods can

be applied:

l 5.3.1 Installing the BTS3812E Cabinet on the Bearing Wall

l 5.3.2 Installing the BTS3812E Cabinet on the Spandrel Girder

Table 5-2 compares the two methods.

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Table 5-2 Comparison between different installation methods

Item Installing the Cabineton the Bearing Wall

Installing the Cabinet on theSpandrel Girder

Scenarios ESD floor is unavailable inthe equipment room.

Load capacity of the

concrete floor in the

equipment room is

insufficient.

The equipment room spans

a limited area.

Spandrel girders are

unavailable in the

equipment room.

Expansion bolt assemblies

are difficult to be inserted

in the floor (for example,

on the precast slab).

It is allowed to drill holes

in the bearing wall.

ESD floor is unavailable in the equipmentroom.

Load capacity of the concrete floor in the

equipment room is insufficient.

It is not allowed to drill holes in the bearing

wall or no bearing wall is available.

Spandrel girders are available on the floor

and it is allowed to install expansion bolt

assemblies on the girders.

Installation

requirements

Supporting U-steels are

required.

The length of the U-steel in

the wall should be no less

than half the thickness ofthe wall. If the wall is not

thick enough, install the

steel through the wall.

The steel is 20 mm to 30

mm over the floor.

The cabinet should not be

installed against the wall.

Supporting U-steels are required.

The supporting U-steels should be placed

on at least two spandrel girders.

The cabinet should not be installed against

the wall.

Installation

methods

Use the supporting U-

steels to bridge two bearing

walls and then install the

cabinet on the steels.

Fix the supporting U-steels to the ground

across the two spandrel girders and then

install the cabinet on the steels.

Others The installation methods of all the parts except the supporting U-steels

are the same.

5.3.1 Installing the BTS3812E Cabinet on the Bearing Wall


load capacity of smaller than 5,500 N/m2. In this situation, you need to use the supporting U-

steels to bridge two bearing walls and then install the cabinet on the U-steels.

5.3.2 Installing the BTS3812E Cabinet on the Spandrel Girder


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This topic describes how to install the cabinet on the concrete floor with insufficient load capacity

of smaller than 5,500 N/m2. In this situation, you need to fix the supporting U-steels to the ground

as spandrel girders and then install the cabinet on the steels.

5.3.1 Installing the BTS3812E Cabinet on the Bearing WallThis topic describes how to install the BTS3812E cabinet on the concrete floor with insufficient

load capacity of smaller than 5,500 N/m2. In this situation, you need to use the supporting U-

steels to bridge two bearing walls and then install the cabinet on the U-steels.

Context

CAUTION

To install the equipment in a building, ask architectural and structural engineers to check theload capacity of the building from the following respects:

l Equipment weight

l Equipment floor space

l Position for installing the equipment

l Structure of the building

If the load capacity is insufficient, reinforce the building.

Supporting U-steels are necessary when the load capacity of the concrete floor in the equipment

room is insufficient for carrying the cabinet. The supporting U-steel should be made ofGB707-88/14b-3000 hot-rolled U-steel and have the total length of 3,000 mm.

Procedure

Step 1 Prepare supporting U-steels.

1. Cut U-steels for a proper length according to the engineering design.

2. Drill holes in the U-steels to fix the base, as shown in Figure 5-20.

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Figure 5-20 Drilling holes on the U-steels (unit: mm)

(1) Hole for fixing the base

NOTE

The distance between two holes for fixing the base on the same U-steel must be 460 mm. The holes

for installing the cabinet in two U-steels must be symmetric.

3. Apply antirust paint and finishing coat to the U-steels.




2. Determine the position for installing the U-steels in compliance with the position for

installing the cabinet.

3. Mark the holes for carrying the U-steels on walls in compliance with the cross-sectional

area of the steels, as shown in Figure 5-21.


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Figure 5-21 Determining positions for U-steels on walls (unit: mm)

(1) Holes on the wall (2) Wall

NOTE

The cross-sectional area of the holes should be a bit larger than that of the U-steels. Typically, the

shape of the holes is rectangle.

4. Drill two holes in each wall. Ensure that the net depth of the holes is not less than half of

the depth of the wall.

5. After drilling the holes, measure the inter-hole distance. If there is a big error between the

holes, relocate and drill new holes.

Step 3 Secure the U-steels.

1. Use the U-steels to bridge the walls.

2. Fill the gaps of the holes with concrete, as shown in Figure 5-22.

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Figure 5-22 Installing the U-steels between the walls

(1) Wall (2) Hole for fixing the base (3) U-steel


1. Place insulating spacers and lower frames on the U-steels.

2. Add a spring washer, a large flat washer, and an insulating washer to each bolt M12 x 40

in turn. Then lead the bolts through the lower frames, insulating spacers, U-steels, and nuts,

as shown in Figure 5-23.


(1) U-steel (2) Lower frame (3) Insulating washer (4) Bolt M12 x 40


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(5) Insulating spacer (6) Adjusting pad (7) Nut M12

3. Tighten the nuts slightly.


NOTE



5. After the leveling, tighten the nuts crosswise until the fastening torque reaches 45 Nm.




5-24.










frames.

l

If there are no insulating washers missed or damaged, check whether the multimeter isfaulty or whether the setting is correct.

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NOTE



frames.



Figure 5-25 Installing the BTS3812E cabinet on the concrete floor with insufficient load

capacity

(1) Cabinet front door (2) Bolt for fixing the upper and lower frames



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(1) Cabinet

(2) Bolt for fixing the upper and lower frames

(3) Cover board

(4) Screw assembly M6 x 20

----End

5.3.2 Installing the BTS3812E Cabinet on the Spandrel Girder

This topic describes how to install the cabinet on the concrete floor with insufficient load capacity

of smaller than 5,500 N/m2. In this situation, you need to fix the supporting U-steels to the ground

as spandrel girders and then install the cabinet on the steels.

Context

CAUTION

To install the equipment in a building, ask architectural and structural engineers to check the

load capacity of the building from the following respects:

l Equipment weight

l Equipment floor space

l Position for installing the equipment

l Structure of the building

If the load capacity is insufficient, reinforce the building.

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Supporting U-steels are necessary when the load capacity of the concrete floor in the equipment

room is insufficient for carrying the cabinet. The supporting U-steel should be made of

GB707-88/14b-3000 hot-rolled U-steel and have the total length of 3,000 mm.

ProcedureStep 1 Prepare supporting U-steels.

1. Drill holes in the U-steels, as shown in Figure 5-27.

Figure 5-27 Drilling holes on the U-steels (unit: mm)

(1) Hole for fixing the base (2) Hole for fixing the U-steel to the floor

NOTE

The distance between two holes for fixing the base on the same U-steel must be 460 mm. The holes

for installing the cabinet in two U-steels must be symmetric.

2. Apply antirust paint and finishing coat to the U-steels.




2. Determine the position for installing the U-steels in compliance with the position forinstalling the cabinet.

3. Mark two parallel lines 441 mm apart from each other on the ground.

4. Mark the anchor points on the lines, as shown in Figure 5-28.


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Figure 5-28 Determining positions for the U-steels (unit: mm)

(1) Hole for fixing the U-steel

(2) Overall dimensioning of the cabinet

(3) Cabinet front

5. Measure the distance between the anchor points. Ensure that the dimensions are accurate.


CAUTION



NOTE




Step 3 Secure the U-steels.





3. Insert the expansion bolt assembly into the holes and hammer them until the expansiontubes are buried into the holes, as shown in Figure 5-29.

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(3) Flat washer 12 (4) Expansion tube

(5) Guiding slot (6) Guiding rib

(7) Nut

CAUTION



4. Remove the bolt M12 x 60, spring washer 12, and flat washer 12, as shown in Figure

5-30.


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5. Lead the bolt M12 x 60 through the spring washer 12, flat washer 12, and U-steel, and then

insert the bolt into the nut in the floor, as shown in Figure 5-31.

Figure 5-31 Securing the U-steels


(3) Flat washer 12 (4) Bolt M12 x 60

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CAUTION

+Direction of the U-steels must be the same as that shown in Figure 5-31.

6. Use a torque wrench to tighten the bolts crosswise until the fastening torque reaches 45

Nm.


1. Place insulating spacers and lower frames on the U-steels.

2. Add a spring washer, a large flat washer, and an insulating washer to each bolt M12 x 40.

Then lead the bolts through the lower frames, insulating spacers, U-steels, and nuts, as

shown in Figure 5-32.


(1) U-steel (2) Lower frame (3) Insulating washer (4) Bolt M12 x 40

(5) Insulating spacer (6) Adjusting pad (7) Nut M12

3. Tighten the nuts slightly.

4. Measure and adjust the levelness ofthe lower frames.

NOTE



5. After the leveling, tighten the nuts crosswise until the fastening torque reaches 45 N.m.



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5-33.










frames.



Step 6 Fasten the cabinet.

NOTE



frames.



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Figure 5-34 Installing the BTS3812E cabinet on the concrete floor with insufficient load

capacity

(1) Cabinet front door (2) Bolt for fixing the upper and lower frames



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installing the bts3812e cabinet

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