Daikin RDT Installation And Maintenance Manual page 130

Table 25: Recommended Lubricants for Fan Shaft Ball
Bearings
Name Temperature
Texaco, 30° to 350°F
Premium RB (34° to 177°C)
40° to 437°F
Mobile, AW2
(40° to 175°C)
Mobile, SHC 68° to 356°F
100 (50° to 180°C)
Chevron,
60° to 450°F
Altiplex
(51° to 232°C)
Synthetic
Exxon, ronex 40° to 300°F
MP (40° to 149°C)
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 .
1/2 to 3/4 0.03
7/8 to 1-3/16 0.10
1-1/4 to 1-1/2 0.15
1-11/16 to 1-15/16 0.20
2 to 2-7/16 0.30
2-1/2 to 2-15/16 0.50
3 to 3-7/16 0.85
3-1/2 to 4 1.50
IM 893-10 • ROOFPAK SINGLEZONE UNITS
Base Thickener NLGI grade
Parafinic
Lithium
mineral oil
Mineral oil Lithium
Synthetic Lithium
Synthetic Lithium
Mineral oil Lithium
Shaft Size Grams
20 mm 0.85
25-30 mm 2.84
35-40 mm 4.25
45-50 mm 5.67
55-60 mm 8.51
65-70 mm 15.59
75-80 mm 24.10
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
2
improper installation which could cause bearing performance
problems as well as serious personal injury.
2
Bearings in Bolt-On Housings (Units)
2
1. 1 Check area - Clean and organize bearing installation
2
area and keep well lit. Be sure mounting surfaces are
clean and flat.
2
2. 2 Check shaft - Shaft should be within tolerance range
shown in Table
Mount bearing on unused section of shafting or repair/
replace shafting as required.
3. 3 Install unit - Slide unit onto shaft. If it is difficult 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)
1-11/16 to 2-7/16
2-7/16 and up
BOA Concentric Inserts
1. Be sure that BOA Concentric collar is fitted square and
snug against the shoulder on the inner ring.
2. Torque BOA Concentric collar cap screw to torque
recommended in
Table 28: Recommended Torque Values for Concentric
Locking Bearing/Shaft Size
Fan Size (in)
27 (AF)/40 & 49
(SWSI)
30 & 33 (AF)/44
(SWSI)
36 (AF)
40 (AF)
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.
130
27, clean, and free of nicks and burrs.
Tolerance
+0 to -0.0015
+0 to -0.002
Table 28.
Torx Screw
Bore Size (in)
Size
2-3/16 T-30
2-7/16 T-45
2-11/16 T-45
2-15/16 T-45
www.DaikinApplied.com
M
aInTenanCe
In lbs .
180
400
400
400