GEA Grasso 5HP Manual De Instalación Y Mantenimiento página 52

APÉNDICE; Información de los productos (IP)
CAPACITY CONTROL
52
Nota!
The 5HP series is only allowed to run in combination with a variable
speed drive for capacity reduction purposes. The tables as shown
below are for starting and stopping purposes only. This means that
directly after the unloaded start-up (using the by-pass valve) the com-
pressor has to be loaded up to 100% by switching on the indicated
capacity steps with small intervals between the steps. (see also sepa-
rate guideline 0087041)
To stop the compressor it has to be unloaded from 100% to the mini-
mum step, all at minimum speed and after activating the by-pass
valve, the compressor can really stop.
0
33
3
67
100
0
25
4
50
100
0
20
5 40
60
100
0
16
6 33
67
100
Cylinders
unloaded start by-pass valve
1
1, 3
1, 2, 3
unloaded start by-pass valve
1
1, 3
1, 2, 3, 4
unloaded start by-pass valve
2
2, 3
2, 3, 5
1, 2, 3, 4, 5
unloaded start by-pass valve
2
2, 5
2, 3, 5, 6
1, 2, 3, 4, 5, 6
-
B
A, B
-
B
A, B
-
C
B, C
A, B, C
-
B
B, C
A, B, C
0089505esp_Pre-release_8
22.03.2017