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

Fig. 3.8 Standard capacity control of compressor RC66W
solenoid valves energized
--
B
ù
û
Electrical
control
-
AA
33.3 66.6 100
% Capacity
No. of operating cylinders
--1
-22
333
--4
-55
RC66W
666
Number of solenoid valves: 2 (A,B)
Number of control steps: 3
A
B
1
3
4
5
6
2
Fig. 3.9 Standard capacity control of compressor RC86W
solenoid valves energized
---
C
ù
ú
û
Electrical
control
-
BBB
--
AA
25 50 75 100
% Capacity
No. of operating cylinders
---1
- 222
--33
4444
---5
- 666
--77
RC86W
8888
Number of solenoid valves: 3 (A,B,C)
Number of control steps: 4
A
C
B
1
3
4
5
6
7
8
2
Refrigeration Division
Grasso
3. DESCRIPTION AND OPERATION
OF CAPACITY CONTROL
v001.99.01.en Installation and Maintenance Manual RC(U)6 page C1.7