Preventative maintenance
Operating and Maintenance Instructions
6
1HSB435409-100 en1
2.2.3 Lubrication
The ball, roller and needle bearings in the operating mechanism are permanently
lubricated and require no maintenance. Lubrication is therefore limited to shafts in
the latch mechanism; these should be greased after 2000 operations. The worm gear
in the drive unit for BLG 1002A should be lubricated at the same interval. The
sliding surfaces of the spring fork and dashpot must be lubricated with Grease “G”
1
and the chains with Oil “A”
1
, in connection with an overhaul.
When supplied the closing and opening dashpots are filled with Oil “S”
1
.
2.2.4 Rust protection
Certain steel parts in the operating mechanism have manganese phosphate surfaces
and then dipped in a rust inhibiting oil. This applies to latches, gear-wheels and
parts of the link system.
The closing springs are rust inhibited by painting with two-component paint (BLG
1002A) or by manganese phosphate surfaces and then dipped in a rust inhibiting oil
(BLK 222).
When supplied, the operating mechanism is equipped with desiccants for protection
against moisture during transport.
Despite the extensive rust inhibitor treatment, minor corrosion can occur after some
years especially if the circuit-breaker is located in a strongly corrosive environment.
Rust spots should be cleaned and new rust inhibitor applied with a brush or spray.
The recommended rust inhibitor is Grease “G”
1
or Tectyl 506
(ABB Art. No. 1241 0011-108).
N.B. Tectyl 506 forms a waxy protective skin when it dries and therefore it must
not be sprayed into bearings and latch mechanisms or on to gear-wheels and
chains.
2.3 Spare parts
Spare parts must be stored indoors in an approved storage space
2
and in the original
packaging. This is particularly important for rubber components (seals etc.), which
must also be protected against sunlight to prevent them drying. Seals have a limited
shelf life so avoid storing them. Base frames can be stored outdoors.
1. See the document “Lubricants” 1HSB445409-1 for the names of suppliers and brands for
grease and oils.
2. Approved storage space:
roof, solid foundation, relative humidity less than 50%, tempe20
o
C(
±
10
°
C)
Summary of Contents for SF6 LTB 245E1 BLG 1002A
Page 1: ...Product Manual 1HSB435416 2 en Rev 1 LTB 245E1 BLG 1002A 3 pole operation ...
Page 92: ...ABB Switchgear SF6 Circuit Breaker Circuit breakers HPL and LTB 1HSB445409 1 en0 Lubricants ...
Page 198: ......
Page 199: ......
Page 209: ......
Page 210: ......
