External Exhaust Tunnel

Assembly of External Exhaust Tunnel – 24 kV

Follow the steps 1–10 to assemble the external exhaust tunnel.

Without pressure relief duct	With pressure relief duct

Step 1: Assembly of L-Bracket

Follow the below steps to assemble the L-bracket (Figure 95):

1. Insert the rivet nuts (1) on the top panel of the LV Compartment.

2. Attach the L-bracket (4) to the LV compartment, and install the bolts (2) along with washers (3).

Figure 95
Installation of the L-Bracket (Sheet 1 of 2)

Figure 95
Installation of the L-Bracket (Sheet 2 of 2)

Step 2: Assembly of Front Cover

Follow the below steps to assemble the front cover (Figure 96):

1. Insert the rivet nuts (2) to the front cover (1).

2. Attach the front cover (1) to the L-bracket, and install the bolts (3) along with washers (4).

Figure 96
Installation of the Front Cover

Step 3: Assembly of Support Frame

Follow the below steps to assemble the support frame (Figure 97):

1. Insert the round rivet nuts (1) on top of the cubicle.

2. Attach the gasket (3) to the support frame (6).

3. Insert the hexagonal rivet nuts (2) to the support frame (6).

4. Attach the support frame (6) to the front cover and to the cubicle, and install the bolts (4) along with washers (5).

5. Attach the corners of the support frame (6) to the front cover and to the cubicle, and install the bolts (7) along with washers (8).

Figure 97
Installation of the Support Frame (Sheet 1 of 2)

Figure 97
Installation of the Support Frame (Sheet 2 of 2)

Step 4: Assembly of End Frame

Follow the below steps to assemble the end frame (Figure 98):

1. Insert the rivet nuts (1) on top of the cubicle.

2. Attach the gasket (3) to the end frame (6).

3. Insert the rivet nuts (2) to the end frame (6).

4. Attach the end frame (6) to the front cover and to the cubicle, and install the bolts (4) along with washers (5).

5. Attach the corners of the end frame (6) to the front cover and to the cubicle, and install the bolts (7) along with washers (8).

Figure 98
Installation of the End Frame (Sheet 1 of 2)

Figure 98
Installation of the End Frame (Sheet 2 of 2)

Step 5: Assembly of Rear Cover

Follow the below steps to assemble the rear cover (Figure 99):

1. Insert the hexagonal rivet nuts (2) to the bracket (1).

2. Attach the rear cover (3) to the rear side of the bracket (1), and install the bolts (5) along with washers (4).

3. Attach the rear cover assembly (6) to the support frames, and install the bolts (5) along with plastic washers (7), and washers (4).

Figure 99
Installation of the Rear Cover

Step 6: Assembly of Top Cover

Follow the below steps to assemble the top cover (Figure 100):

1. Attach the gaskets (3) to the top of front cover, rear cover, and frames.

2. Insert the rivet nuts (1) to the top of front cover, rear cover, and frames.

3. Attach the top covers (2) to the support frames and end frames, and install the bolts (4) along with plastic washers (6), and washers (5).

4. Attach the top covers (2) together, and install the bolts (4) along with washers (3), and hexagonal nuts (7).

   
   

   Figure 100
   Installation of the Top Cover

   1	Rivet nut	5	Washer
   2	Top cover	6	Plastic washer
   3	Gasket	7	Hexagonal nut
   4	Bolt

Step 7: Assembly of End Cover:

Follow the below steps to assemble the end cover (Figure 101):

1. Insert the rivet nuts (1) to the sides of left and right end frame.

2. Attach the gaskets (5) to the end frame.

3. Attach the end cover (4) to the end frame, rear cover, front cover, and top cover, and install the bolts (3) along with washers (2).

Figure 101
Installation of the End Cover

Step 8: Assembly of Deflector Support:

Follow the below steps to assemble the deflector support (Figure 102):

1. Attach the deflector support (1) to the front cover, and install the bolts (4) along with plastic washers (2), and washers (3).

Figure 102
Installation of the Deflector Support

Step 9: Assembly of Deflector:

Follow the below step to assemble the deflector (Figure 103):

1. Attach the gaskets (1) in between the deflectors.

2. Attach the deflectors (5) to the top of front cover, and deflector support, and install the bolts (2) along with plastic washers (4), washers (3), and hexagonal nuts (6).

Figure 103
Installation of the Deflector

Step 10: Assembly of Extended Tunnel Assembly:

Follow the below steps to assemble the extended tunnel assembly (Figure 104):

1. Attach the gaskets (5) to the support frame, and between the deflector.

2. Attach the extended tunnel assembly (6) to the support frame, rear cover, front cover, and top cover, and install the bolts (1) along with plastic washers (4), washers (2), and hexagonal nuts (3).

Figure 104
Installation of the Extended Tunnel Assembly