Ingersoll Rand R4-11 kW Manual Del Usuario página 8

EN
9. Screw the jack bolt down into the motor plate to raise the assembly.
10. Replace the old belt with a new belt as called out in the Parts Manual.
11. After belt is in place, use the jack bolt to slowly lower the motor
support plate.
12. Locate the tensioning bolt, which is the carriage bolt coming from
underneath the motor support plate below the airend.
Belt Tension
Power Pressure
Frequency (hz)
110 PSIG
125 PSIG
5 hp
145 PSIG
110 PSIG
125 PSIG
7.5 hp
145 PSIG
200 PSIG
110 PSIG
125 PSIG
10 hp
145 PSIG
200 PSIG
110 PSIG
125 PSIG
15 hp
145 PSIG
200 PSIG
Figure 7: Do not insert anything between motor support plate and airend support .
EN-8
RELEASED 16/Dec/2014 10:49:53 GMT
Table 3: Belt tension chart
N/mm lbf/in
60 75/21.2 16.9/0.83
62 75/20.6 16.9/0.81
61 75/20.7 16.9/0.81
71 75/17.2 16.9/0.68
67 75/18.5 16.9/0.73
68 75/18.0 16.9/0.71
71 75/16.9 16.9/0.66
72 75/16.8 16.9/0.66
73 75/16.5 16.9/0.65
74 75/16.3 16.9/0.64
76 75/15.8 16.9/0.62
74 108/16.4 24.3/0.64
74 105/16.3 23.6/0.64
75 105/16.1 23.6/0.63
73 105/16.5 23.6/0.65
13. Use the nut/washer from the tensioning bolt along with loosening
the jack bolt to correctly tension the belt. Proper belt tension
frequencies are found in table 3 below.
14. Once belt is aligned and tensioned, replace the front belt guard.
Belt Tension
Power Pressure
Frequency (hz)
110 PSIG
125 PSIG
7.5 hp
1-Phase
145 PSIG
200 PSIG
7.5 Barg
8.5 Barg
5.5 kW
10 Barg
14 Barg
7.5 Barg
8.5 Barg
7.5 kW
10 Barg
14 Barg
7.5 Barg
8.5 Barg
11 kW
10 Barg
14 Barg
N/mm lbf/in
71 75/17.2 16.9/0.68
67 75/18.4 16.9/0.73
69 75/18.0 16.9/0.71
72 75/16.9 16.9/0.66
74 75/16.4 16.9/0.65
74 75/16.3 16.9/0.64
76 75/15.9 16.9/0.63
74 75/16.3 16.9/0.64
74 75/16.3 16.9/0.64
74 75/16.3 16.9/0.64
75 75/16.1 16.9/0.63
79 75/15.1 16.9/0.59
74 105/16.2 23.6/0.64
75 105/16.1 23.6/0.63
73 105/16.5 23.6/0.65
74 105/16.4 23.6/0.65
80448517 Rev A