JOHNSON CONTROLS
16
FORM 102.20-OM2
ISSUE DATE: 6/01/2015
SECTION 2 - START-UP AND OPERATION
FIGURE 2 - EXAMPLE OF A SOLUTION XT TERMINATION CHART
LD16563b
Inspecting Fan Assembly
Use the following instructions to inspect the fan assem-
bly.
1. When the AHU is removed from long term stor-
age, purge the moisture-laden bearing grease, and
replenish the AHU with fresh grease, according to
the lubrication label.
2. Meg the motor to verify that the resistance is at a
satisfactory level, compared to the value recorded
prior to storage.
3. Check the torque for bearings and locking collars
as shown in Table 1 on page 16.
TABLE 1 - TORQUE FOR TIGHTENING SET
SCREWS
SETSCREW
DIAMETER
(IN)
HEX SIZE
ACROSS
FLATS (IN)
MINIMUM RECOMMEND-
ED TORQUE
IN LB FT LB
1/4 1/8 66 - 85 5.5 - 7.08
5/16 5/32 126 - 164 10.5 - 13.7
3/8 3/16 228 - 296 19.0 - 24.7
7/16 7/32 348 - 452 29.0 - 35.7
1/2 1/4 504 - 655 42.0 - 54.6
5/8 5/16 1104 - 1435 92.0 - 119.6
4. Verify that the fan wheel is properly aligned, is
tight on the shaft, and moves freely.
5. Make sure the fan bearings are properly lubricat-
ed. Refer to SECTION 3 - MAINTENANCE in this
manual for more information.
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