Mitsubishi Electric PUHY-P-YSJM-A, Data Book

Page: 43 / 104

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Rotational
speed
<rpm>
No.
Outside
diameter (A)
<ø>
Nominal
Diameter (B)
<ø>
Bore (E)
<ø>
(C)
<ø> (D)
<ø> (F)
<mm>
(G)
<mm>
200
190
224
212
212
190
190
170
160
150
145
135
135
211
201
235
223
223
201
201
181
171
161
156
146
146
181
171
205
193
193
171
171
151
141
131
126
116
116
80
71
80
80
80
71
71
71
71
71
71
63
63
38
38
38
38
38
38
38
38
38
38
38
38
38
41.3
41.3
41.3
41.3
41.3
41.3
41.3
41.3
41.3
41.3
41.3
41.3
41.3
10
10
10
10
10
10
10
10
10
10
10
10
10
Outside
diameter (A)
<ø>
Nominal
Diameter (B)
<ø>
Bore (E)
<ø>
(C)
<ø> (D)
<ø> (F)
<mm>
(G)
<mm>
V-belt (H)
<mm / in>
Motor 7.5kW,1450rpm <50Hz>
Motor pulley Fan pulley
23.9
25.3
23.3
24.2
24.2
25.6
26.4
28.4
29.6
31.6
32.4
34.4
35.5
5.0
5.1
4.9
5.1
4.8
5.1
4.8
4.9
4.9
4.8
4.9
5.0
4.7
Deflection
force
Amount
of
Deflection
How to choose the pulley
(EXAMPLE)
Indoor unit : PFAV-P750VM-E (50Hz)
Required external static pressure : 600 Pa
Required air flow rate : 250m 3 /min
7.5kW
1
3
4
5
6
9
11
2
7
8
13
12
10
340 320 300 280 260 240 220
0
1100
1000
900
800
700
600
500
400
300
200
100
······Standard
50Hz
Internal resistance
Airflow rate < m
3
/ min >
Total static pressure < Pa >
Note1. Use two V-belts for P750 indoor unit.
The fan characteristic curve shows the internal resistance
is 100 Pa when the air flow rate is 250m
3
/min.
Total static pressure =
internal resi external static pressure
=100 Pa + 600 Pa
=700 Pa
Read the intersection point of the total static pressure 700
Pa and the air flow rate 250m 3 /min in the fan characteristic
curve. You will see that the set of pulleys No.4 is suitable
under the condition.
The following table shows the details of appropriate pulley
combinations.
Motor pulley : ø212-B-2-38
Fan pulley : ø300-B-2-32
V-belt : B57/1448 mm
Note 1. When replacing the motor on site, reset the thermal relay accordingly.
Note 2. Mitsubishi Electric shall not be held responsible for the pulley or motor modified on site.