INGENIA CAH - Belt Tension and Alignment; Fan Start-up and Rotation

Installation, Operation and Maintenance Manual for Ingenia Outdoor Units CAH-OD-16-00
30
2
poles
4
poles
6
poles
8
poles
3600 1800 1200 900
MAXIMUM INERTIAL LIMITS AND ACCELERATION TIME FOR THREE PHASE / STANDARD DESIGN
B / ODP MOTORS
The following table lists permissible values of inertia for two consecutive starts with the motor starting cold or for
one start with the motors at normal operational temperature. The value t(sec) is the acceleration time for these
load values.
2 Pole GP
ODP
2 Pole Super
E
4 Pole GP
ODP
4 Pole Super
E
6 Pole GP
ODP
6 Pole Super
E
8 Pole GP
ODP
HP WK² t(sec) WK² t(sec) WK²
t
(sec) WK² t(sec) WK²
t
(sec) WK² t(sec) WK²
t
(sec)
1 9 22 9 23 30 15 28 20 52 20 65 25 101 32
1.5 11 20 11 21 35 17 36 16 75 18 93 19 147 24
2 12 20 14 20 47 19 53 20 102 19 116 19 200 25
3 14 14 18 14 70 18 78 20 148 18 132 25 290 28
5 22 11 24 14 101 17 96 19 220 20 201 20 475 27
7.5 29 9 30 9 143 16 146 16 288 21 301 17 480 27
10 36 13 45 14 163 15 206 15 390 19 404 20 648 21
15 60 13 60 13 252 14 268 20 512 17 608 17 970 19
20 71 16 83 16 334 16 344 18 714 17 789 15 1243 19
25 90 16 92 16 406 21 406 21 847 17 907 17 1500 19
30 112 20 125 19 494 17 509 20 1097 18 1192 16 1788 20
40 139 17 147 16 570 19 592 18 1258 18 1426 17 2417 20
50 200 19 207 19 714 17 772 16 1611 19 1753 17 3036 19
60 256 18 237 18 847 18 914 17 2409 21 2450 22 3986 20
75 294 17 298 17 1012 17 1242 15 2703 21 2640 19 4897 24
100 415 19 420 19 1394 18 1528 19 3331 22 3762 22 6390 27
125 511 16 457 20 1850 21 1906 19 4471 20 4500 25 7910 26
150 535 14 475 15 1865 16 1920 16 5050 21 5100 20 9275 24
200 585 13 525 12 2550 17 2490 15 5200 17 5250 18 10275 22
250 665 13 615 11 2900 19 3050 19 5250 18 5300 16 11775 18
BELT TENSION (If applicable)
- Check drive alignment and belt tension. Belt tensioning gauges can be used to determine
whether the belts are tensioned properly. A practical “rule of thumb” is to deflect the belt
1/64” per inch of center distance. In other words, if the center distance between two shafts
is 100 inches, then the belts should deflect 1 9/16” (refer to Figure 20).
-
NOTE: It is important to recheck belt tension after a few days of operation. New
belts require a break in period of operation.
FANS Start
- Turn on power just long enough to start assembly rotating
- Check if the impeller rotation matches the arrow found on the fan scroll
- If the rotation is not correct, interchange any two line leads to reverse rotation