Grasso RC6 - Alternative Capacity Control of Compressor RC66; Standard Capacity Control of Compressor RC66

solenoid valves energized
--
A
ù
û
Electrical
control
-
BB
33.3 66.6 100
% Capacity
No. of operating cylinders
111
-22
--3
444
-55
RC66
--6
solenoid valves energized
---
A
ù
ê
û
Electrical
control
-
BBB
--
CC
25 50 75 100
% Capacity
No. of operating cylinders
1111
--22
- 333
---4
5555
--66
- 777
RC86
---8
Number of solenoid valves: 3 (A,B,C)
Number of control steps: 4
Number of solenoid valves: 2 (A,B)
Number of control steps: 3
A
B
C
1
3
4
5
6
7
8
2
A
B
1
3
4
5
6
2
Fig. 3.4 Standard capacity control of compressor RC66
Fig. 3.5 Standard capacity control of compressor RC86
Refrigeration Division
Grasso
3. DESCRIPTION AND OPERATION
OF CAPACITY CONTROL
v001.99.01.en Installation and Maintenance Manual RC(U)6 page C1.5