Appendix A • Unloaders
A – 3
MicroVission Controller • Operation and Service Manual • Emerson • 35391MV 1.3
Table A-5. Type 5 Unloader - Cylinders: 8, 16
Unloading Percentage: 25%, 50%, 75% *
% Load Compressor Start Output Unloader Output #1 Unloader Output #2 Unloader Output #3 % Unload
0 (OFF) 0 0 0 0 100
25 1 1 1 1 75
50 1 0 1 1 50
75 1 0 0 1 25
100 1 0 0 0 0
Table A-6. Type 6 Unloader - Cylinders: 4 or 8
Unloading Percentage: 50%, 100% *
% Load Compressor Start Output Unloader Output #1 Unloader Output #2 % Unload
0 (OFF) 0 0 0 100
0 (ON) 1 1 1 100
50 1 0 1 50
100 1 0 0 0
Table A-7. Type 7 Unloader - Cylinders: 6 or 12
Unloading Percentage: 33%, 66%, 100% *
* 0 = output OFF
1 = output ON
% Load Compressor Start Output Unloader Output #1 Unloader Output #2 Unloader Output #3 % Unload
0 (OFF) 0 0 0 0 100
0 (ON) 1 1 1 1 100
33 1 0 1 1 66
66 1 0 0 1 33
100 1 0 0 0 0
Table A-8. Type 8 Unloader - Cylinders: 6 or 12
Unloading Percentage: 17%, 33%, 50%, 66% |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
33 1 0 1 1 66
50 1 1 0 1 50
66 1 0 0 1 33
83 1 1 0 0 17
100 1 0 0 0 0