Front Door And Rear Access Plug - CleaverBrooks CBEX Elite Operation And Maintenance

8.19 — Front Door and Rear Access Plug
Notes:
1) No insulation or cut bricks to be installed in upper 120° section of the furnace.
2) Pack all bricks tightly with a mallet and remove excess mortar. Typical mortar joints shall be
approximately 1/ 16" .
3) Do not apply mortar between insulation and bricks, tiles, or furnace.
4) Do not cover furnace weld seams with insulation. Cut a strip of insulation out to reveal weld.
5) During installation, support upper tiles with wooden supports in a diagonal fashion until row
is complete.
6) To insure a tight fit and maximum I.D. of arch bricks, place a 3" square scrap piece of insulation
as a shim between bricking tool collar and I.D. of upper half of arch bricks (as nessesary).
7) Stagger liner tile mortar joints at each row.
8) [500 HP and up] Fill the first two (500-600 HP) or four (700-1200 HP) full furnace corrugations under
the liner tiles with Vee-Block mix (Item #5) below the horizontal centerline (3 o-clock to 9 o-clock position).
Do not fill the first half corrugation.
9) Use arch brick installation tool (see table).
*
Arch brick installation tool
BHP Part number
100-125 098-00385
150-200 098-00336
350-400 098-00333
500-600 098-00375
700-800 098-00334
900-1000 098-00394
1100-1200 098-00365
* Arch brick installation tool must be fastened to furnace ring with a minimum of (2) 5/ 8-11 UNC nuts 180° apart.
See parts section (Chapter 9) for arch brick & liner tile part numbers
Throat Tile and Furnace Liner Installation Notes
FIGURE 8-24.
8.19 — Front Door and Rear Access Plug
8.19.1 — Opening Front Door
Tighten the Davit Nut
FIGURE 8-25.
750-368
CBEX Elite 100-1200 HP
Before opening the door, tighten the nut on the davit arm to create a
slight tension. This will minimize sagging and facilitate opening of the
door. After opening, check the gaskets and seating surfaces. Replace
TIGHTEN
the door gaskets if they are hard or brittle. Clean the sealing surfaces of
the door and tube sheet.
After the boiler is back in operation, re-tighten the door bolts to com-
pensate for compression of the gasket or movement of the door.
o
120
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8-27