56
APPENDIX V. FAN PERFORMANCE (cont.)
Table 24. – PULLEY ADJUSTMENT -- Vertical airflow units
UNIT
MOTOR/DRIVE
COMBO
MOTOR PULLEY TURNS OPEN
0.0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
4.5
5.0
17
Standard Static
680
663
647
630
614
597
580
564
547
531
514
Medium Static
863
845
826
808
789
771
753
734
716
697
679
High Static
1009
991
972
954
936
918
899
881
863
844
826
24
Standard Static
863
846
828
811
794
777
759
742
725
707
690
Medium Static
1021
1002
984
965
947
928
909
891
872
854
835
High Static
1176
1153
1129
1106
1082
1059
1035
1012
988
965
941
NOTE
: Do not adjust pulley further than 5 turns open.
--- Factory settings
Table 25. – PULLEY ADJUSTMENT -- Horizontal airflow units
UNIT
MOTOR/DRIVE
COMBO
MOTOR PULLEY TURNS OPEN
0.0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
4.5
5.0
17
Standard Static
680
663
647
630
614
597
580
564
547
531
514
Medium Static
780
763
747
730
714
697
680
664
647
631
614
High Static
912
895
879
862
846
829
812
796
779
763
746
24
Standard Static
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
Medium Static
1021
1002
984
965
947
928
909
891
872
854
835
High Static
1176
1153
1129
1106
1082
1059
1035
1012
988
965
941
NOTE
: Do not adjust pulley further than 5 turns open.
--- Factory settings