Start-up and operation
20
The centrifugal force is adjustable with the unbalance discs (lamella) of
type XL in the following steps:
1: Number of unbalance discs per side
2: Default number of unbalance discs per vibrator
3: Centrifugal force in %
There are 2 possibilities to adjust the unbalances:
1. The unbalance adjustment (fine adjustment) is carried out by remov-
ing one unbalance disc on each side. All centrifugal values in % can
be adjusted as specified in the table.
The removed unbalance discs must be replaced by compensation
washers of identical thickness and identical inner diameter. These are
available from
Netter
Vibration
.
2. The unbalance adjustment (coarse adjustment) is performed by turn-
ing one unbalance disc on each side by 180° on the shaft.
Twice the number of unbalance discs turned by 180° becomes inef-
fective.
The centrifugal force is adjustable with the unbalance discs (lamella) type
XLs. Adjustment of the unbalances is carried out according to a scale disc
or the supplementary sheet in the terminal box of the NEG/NEH.
By rotating the outer, adjustable unbalance disc(s) to another position, the
percentage of the centrifugal force changes as shown in the illustration
below. The grid position is defined by position pins.
Settings:
Unbalance
discs
type XL
Unbalances
type XLs