IM 893-10 • ROOFPAK SINGLEZONE UNITS 130 www.DaikinApplied.com
MaInTenanCe
Table 25: Recommended Lubricants for Fan Shaft Ball
Bearings
Name Temperature Base Thickener NLGI grade
Texaco,
Premium RB
30° to 350°F
(34° to 177°C)
Paranic
mineral oil
Lithium 2
Mobile, AW2
40° to 437°F
(40° to 175°C)
Mineral oil Lithium 2
Mobile, SHC
100
68° to 356°F
(50° to 180°C)
Synthetic Lithium 2
Chevron,
Altiplex
Synthetic
60° to 450°F
(51° to 232°C)
Synthetic Lithium 2
Exxon, ronex
MP
40° to 300°F
(40° to 149°C)
Mineral oil Lithium 2
Note: Temperature ranges over 225°F are shown for lubricants only. High temperature ap-
plications are not suitable for standard air handler components.
Table 26: Recommended Fan Relubrication Grease Charge
Shaft Size (in) Oz. Shaft Size Grams
1/2 to 3/4 0.03 20 mm 0.85
7/8 to 1-3/16 0.10 25-30 mm 2.84
1-1/4 to 1-1/2 0.15 35-40 mm 4.25
1-11/16 to 1-15/16 0.20 45-50 mm 5.67
2 to 2-7/16 0.30 55-60 mm 8.51
2-1/2 to 2-15/16 0.50 65-70 mm 15.59
3 to 3-7/16 0.85 75-80 mm 24.10
3-1/2 to 4 1.50 85-105 mm 42.53
Bearing Replacement
The following instructions must be read in entirety before
attempting installation or removal. The procedures indicated
should be carefully followed. Failure to do so can result in
improper installation which could cause bearing performance
problems as well as serious personal injury.
Bearings in Bolt-On Housings (Units)
1. 1 Check area - Clean and organize bearing installation
area and keep well lit. Be sure mounting surfaces are
clean and at.
2. 2 Check shaft - Shaft should be within tolerance range
shown in Table 27, clean, and free of nicks and burrs.
Mount bearing on unused section of shafting or repair/
replace shafting as required.
3. 3 Install unit - Slide unit onto shaft. If it is difcult to
mount bearing on shaft, use a piece of emery cloth to
reduce any high spots on shaft. Do not hammer on any
component of the bearing.
4. 4 Fasten unit in place - Install housing mounting bolts,
check and align bearing and tighten mounting bolts to
recommended fastener torques. Exercising extreme
caution and safety, rotate shaft slowly to center bearing.
Table 27: Shaft Size Tolerances
Shaft Size (in) Tolerance
1-11/16 to 2-7/16 +0 to -0.0015
2-7/16 and up +0 to -0.002
BOA Concentric Inserts
1. Be sure that BOA Concentric collar is tted square and
snug against the shoulder on the inner ring.
2. Torque BOA Concentric collar cap screw to torque
recommended in Table 28.
Table 28: Recommended Torque Values for Concentric
Locking Bearing/Shaft Size
Fan Size (in) Bore Size (in)
Torx Screw
Size In lbs.
27 (AF)/40 & 49
(SWSI)
2-3/16 T-30 180
30 & 33 (AF)/44
(SWSI)
2-7/16 T-45 400
36 (AF) 2-11/16 T-45 400
40 (AF) 2-15/16 T-45 400
Note: AF = DWDI AF, SWSI = AF Plenum Fan
Monitor Installed Bearing
After bearing has been run for several minutes, and
again after several hours, check bearing for excessive
noise or vibration. Shutdown machine and check housing
temperature: typical applications operate at 100°F - 105°F
(38°C - 66°C). Tighten all locking devices after 500 hours or
3 months, whichever comes first.
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