Appendix A • Unloaders
A – 7
MicroVission Controller • Operation and Service Manual • Emerson • 35391MV 1.3
Table A-19. Type 19 Unloader - Cylinders: 3
Unloading Percentage: 33%, 66%
Single cylinder on Unloader Output #1 and Output #2*
% Load Compressor Start Output
Unloader Output #1
(single cylinder)
Unloader Output #2
(single cylinder)
% Unload
0 (OFF) 0 0 0 100
33 1 1 1 66
66 1 0 1 33
100 1 0 0 0
* 0 = output OFF
1 = output ON
Table A-20. Type 20 Unloader - Cylinders: 7
Unloading Percentage: 14%, 29%, 43%, 57%
Single cylinder on Unloader Output #1
% Load Compressor Start Output
Unloader Output #1
(single cylinder)
Unloader Output #2
(double cylinder)
Unloader Output #3
(double cylinder)
% Unload
0 (OFF) 0 0 0 0 100
43 1 0 1 1 57
57 1 1 1 0 43
71 1 0 0 1 29
86 1 1 0 0 14
100 1 0 0 0 0
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