Carrier 48HC D17 Series Service And Maintenance Instructions page 74

Nominal 15 to 25 tons with puron (r-410a) refrigerant
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TABLE 31 – PULLEY ADJUSTMENT VERTICAL
MODEL
MOTOR/DRIVE COMBO
SIZE
Standard Static
17
Medium Static
3 phase
High Static
Standard Static
20
Medium Static
3 phase
High Static
Standard Static
24
Medium Static
3 phase
High Static
Standard Static
28
Medium Static
3 phase
High Static
NOTE: Do not adjust pulley further than 5 turns open.
--- Factory settings
TABLE 32 – PULLEY ADJUSTMENT HORIZONTAL
MODEL
MOTOR/DRIVE COMBO
SIZE
Standard Static
17
Medium Static
3 phase
High Static
Standard Static
20
Medium Static
3 phase
High Static
Standard Static
24
Medium Static
3 phase
High Static
Standard Static
28
Medium Static
3 phase
High Static
NOTE: Do not adjust pulley further than 5 turns open.
--- Factory settings
APPENDIX III. FAN PERFORMANCE (cont.)
0
0.5
1
680
663
647
863
845
826
1009
991
972
822
802
782
879
862
846
1078
1058
1039
863
846
828
1021
1002
984
1176
1153
1129
911
892
872
1116
1096
1075
1176
1153
1129
0
0.5
1
680
663
647
780
763
747
912
895
879
822
802
782
879
862
846
1078
1058
1039
863
846
828
1021
1002
984
1176
1153
1129
N/A
N/A
N/A
923
906
889
1010
992
973
MOTOR PULLEY TURNS OPEN
1.5
2
2.5
3
630
614
597
580
808
789
771
753
954
936
918
899
762
742
722
702
829
813
796
779
1019
1000
980
960
811
794
777
759
965
947
928
909
1106
1082
1059
1035
853
833
814
795
1055
1035
1015
994
1106
1082
1059
1035
Motor Pulley turns open
1.5
2
2.5
3
630
614
597
580
730
714
697
680
862
846
829
812
762
742
722
702
829
813
796
779
1019
1000
980
960
811
794
777
759
965
947
928
909
1106
1082
1059
1035
N/A
N/A
N/A
N/A
873
856
839
822
955
937
919
900
74
3.5
4
4.5
5
564
547
531
514
734
716
697
679
881
863
844
826
682
662
642
622
763
746
730
713
941
921
902
882
742
725
707
690
891
872
854
835
1012
988
965
941
775
756
736
717
974
954
933
913
1012
988
965
941
3.5
4
4.5
5
564
547
531
514
664
647
631
614
796
779
763
746
682
662
642
622
763
746
730
713
941
921
902
882
742
725
707
690
891
872
854
835
1012
988
965
941
N/A
N/A
N/A
N/A
805
789
772
755
882
864
845
827

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