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FAN SPEED ADJUSTMENT
For models RAS-NP9US through RAS-NP15US
■Motor Pulley Dimensions(mm)
Models
a
RAS-NP9US
RAS-NP10US
27
RAS-NP13US
RAS-NP15US
■Motor Pulley Adjustment
Models
X
PD
RAS-NP9US
RPM 950
PD
RAS-NP10US
RPM 940
PD
RAS-NP13US
RPM 920
PD
RAS-NP15US
RPM 1095 1060 1030 1000
RPM ：Fan Speed (rpm)
PD：Pitch Diameter of Pulley (mm)
RPM/Turn：Fan Speed Change per One Turn of Movable Motor Pulley
Compressor is mounted on rubber isolators, and is held rigidly during shipment by two sets of shipping
washers. Before compressor starting, remove the yellow-painted shipping washers, the compressor
should float freely on the rubber isolators.
17
FAN SPEED ADJUSTMENT
b
c
24
8
Fig. 9-2. Adjustable Motor Pulley
X：Regulation Space of Motor Pulley (mm)
PD：Pitch Diameter of Motor Pulley (mm)
0
1
2
3
112
109
106
103
925
895
870
112
109
106
103
910
885
860
112
109
106
103
895
870
845
112
109
106
103
REMOVING SHIPPING WASHERS
Fig. 10. Removing Shipping Washers
REMOVING SHIPPING WASHERS
4
5
6
99
96
93
845
815
790
99
96
93
835
805
780
99
96
93
815
790
765
99
96
93
970
940
910
Factory Set Point
7
X
RPM
PD
90
5.3
810
95.5
765
90
3
860
102.6
755
90
0.8
900
109.6
740
90
3.4
990
101.4
880
RPM/Turn
40
40
39
46
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