ABB Platinum standard Series Product Instruction page 85

MAINTENANCE
PREVENTIVE MAINTENANCE PROCEDURES
7 - 4
Dow Corning No. 4 compound.
•
®
Tape-Seal teflon tape.
•
O-ring kits identified in
•
application.
Nonmetallic tool to remove O-rings.
•
1. If supplied, use the adjustable end wrench to remove the
vent/drain plugs, pipe plugs, and process flange adapters
(Figs. 2-1, 8-2, and 8-3).
2. Use an adjustable end wrench to remove four of the pro-
cess flange nuts on either side of the process flange and
remove the process flange studs (Figs.
3. Remove the process and flange adapter O-rings (Figs. 2-1,
8-2, and 8-3).
4. Use a liquid solvent compatible with the materials present
(remaining O-rings, process flanges, and diaphragms).
5. Refer to Section 9
O-rings for the application.
6. Coat the O-rings with a film of Dow Corning No. 4 com-
pound and replace.
7. Mount the process flanges in the proper position and insert
the process flange studs until the process flange nuts already
installed come in contact with the process flange.
8. Starting with one of the other four process flange nuts, fin-
ger tighten it only until it comes in contact with the process
flange.
9. Proceed in the same manner with the remainder of the pro-
cess flange nuts, operating diagonally two by two.
10. Working diagonally two by two, tighten the process flange
nuts in 25% increments until reaching a value of 65 to 69 Nm
(48 to 52 ft-lbs) for stainless steel and NACE nuts, 78 to
82 Nm (57 to 61 ft-lbs) for carbon steel nuts, or 179 to 191 Nm
(131 to 141 ft-lbs) for high static pressure nuts.
11. If supplied and removed, replace the flange adapters. Be
sure to orient them in the same position as when they were
removed to maintain the proper center-to-center distance for
the application.
Section 9 for the particular
8-2 and 8-3).
and identify the proper replacement
WBPEEUI110504A0