Instructions

Start-up and operation
21
Procedure:
1. Switch off the NEA/NEG at the main switch, secure against uninten-
tional starting and ensure that there is no voltage.
2. Loosen both unbalance covers.
3. Loosen the locking nuts or locking screws.
4. Bring the unbalances to the desired setting according to the following
descriptions for the various unbalance discs. Note the mirror-
symmetrical setting.
5. Retighten the locking nuts or locking screws. Observe the recom-
mended tightening torques, see chap. Technical data, from page 11
6. Fasten both covers for the unbalances.
The tables below show the type of unbalance and the number of unbal-
ances per vibrator at the default setting of 100%:
Type:
NEA
Unbalance
Type
Quantity
50 Hz
60 Hz
504
XL
8
8
5020
XL
8
8
5050
XL
18
18
5060
XLs
4
4
50120
XLs
6
6
50200
XLs
10
8
50300
XLs
8
6
50550
XLs
10
6
50770
XLs
8
6
2530
XLs
6
6
2570
XLs
16
10
25210
XS
4
4
25420
XS
4
4
25540
XS
4
4
25700
XS
4
4
Type:
NEG
Unbalance
Type
Quantity
50 Hz
60 Hz
5020
XL
8
8
5050
XL
18
18
5060
XLs
4
4
50120
XLs
6
6
50200
XLs
10
8
50300
XLs
8
6
50550
XLs
10
6
50770
XLs
8
6
501140
XLs
12
8
501540
XLs
12
8
501800
XLs
14
10
502020
XLs
16
10
502270
XLs
18
12
503400
XLs
12
8
503820
XLs
14
10
506220
XS
4
4
508830
XS
4
4
Number of
unbalances