Diagrams Single Stage And Booster - GEA Grasso 5 Installation And Maintenance Instructions Manual

Therefore, for all Grasso two-stage types a fast pull- down electric capacity
control system has been developed, which allows the compressors to be started
with two or more HP cylinders in operation and which includes one or more part-
load steps with volume ratio ϕ = 1.
4.4

DIAGRAMS SINGLE STAGE AND BOOSTER

Solenoid valve/cylinder numbering for electric capacity control
V 600, Before July
V 600 From July
V 1800 Before Sept.
V 1800 From
Sept. 2014
Capacity control steps
17
0089288_imm_v_english_19
07.04.2021
UNL
NO
V 300 &
1
V 700
V 450 &
(3+4)
V 1100
(5+6)
2019
(5+6)
2019
V 1400 (5+6)
(7+8)
2014
(5+7+8)
Compressor
type
V 300
&
V 700
V 450
&
V 1100
V 600
Before July 2019
Refer to the swept volume expressed as a percentage of the full-load swept volume
DIAGRAMS SINGLE STAGE AND BOOSTER
Solenoid
No. 1 No. 2
NC
Cylinder number / solenoid valves
2
2 (5+6)
7
7
7
5
(9+10) (1+2)
17
Capacity %
25
50
75
100
33
50
67 (3+4) + (5+6)
83 (3+4) + (5+6) + 1
100 (3+4) +2 + (5+6) + 1
25
37
50
62 (5+6) + 8 + (1+3)
APPENDIX; Product Information (PI)
No. 3
NC NC
3 4
1
8 (2+4)
8 (1+2)
8 (2+4)
6 (9+10)
(3+4)
Cylinders
1
1 + 2
1 + 2 + 3
1 + 2 + 3 + 4
(3+4)
(3+4) + 2
(5+6)
(5+6) + 8
(5+6) + 8 + 7
No. 4
NC
-
-
(1+3)
(3+4)
(1+3)
(1+2+3+4)
6
Solenoids
-
1
1 + 2
1 + 2 + 3
-
1
2
2 + 3
1 + 2 + 3
-
2
1 + 2
2 + 4
55