Eaton COOPER POWER SERIES, Service Instructions Manual

4

Replacement of Cover Gasket for Padmount Switchgear Side-Hinge-2 Models

Field Service inStructionS

   MN285009EN   April 2019

1.4  Pull the pressure-relief valve to relieve pressure 

(Figure 17).
Record whether pressure was present or not.

Figure 17.   

1.5  Verify that the Gasket Replacement Kit contains the 

correct gaskets:
1.5.1   Remove the flat gaskets from the Gasket 

Replacement Kit.

1.5.2   Before removing the cover, pre-position the 

gaskets on the cover. Verify that the gaskets 

are the correct length and that all gasket holes 

align with the cover bolts.

If the gasket length, hole spacing, or 

number of holes does not match the cover, 

STOP . Do not proceed any further with the 

repair . Consult factory service .

1.5.3   Assemble the four gaskets at the puzzle 

dove-tail corner joints (Figure 18) to ensure the 

correct positioning of gaskets.

ote:

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At the bolt holes, notice that the larger 

portion of the rubber is towards the 

interior of the tank.

Figure 18.   

Dove-tail joint

2.  Perform the Switchgear Apparatus 

Functional Test

ote:

N

Consult factory service if the apparatus does 

not perform as expected during the functional 

test.

2.1  Prepare the switchgear apparatus for the test:

●

●

For units 

without

 an optional motor operator: 

Follow the procedure in step 2.1.1.

●

●

For units 

with

 an optional motor operator: 

Follow the procedure in step 2.1.2.

2.1.1  

For units 

without

 an optional motor 

operator:

Manually open and close each single or three-

phase handle for all Source and Tap Ways.
Leave each handle in the Closed position.

2.1.2  

For units 

with

 an optional motor operator:

a.  Electrically operate the handle to the 

Open position (Figure 19 - pre 2018 units; 

Figure 20  - 2018 & later units).

b.  Remove the drive pin connecting the 

motor operator to the handle drive lever 

assembly (Figure 21 & Figure 22); then 

allow the motor operator to drop away 

from the handle (Figure 23).

c.  Manually close, open, and then close each 

single or three-phase handle for all Source 

and Tap Ways.
Leave each handle in the Closed position.

Figure 19.   

Handle at Open position (pre 2018 units)