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Table 26: Recommended Lubricants for Fan Shaft Ball
Bearings
Name
Temperature
Texaco,
30° to 350°F
Premium RB
(34° to 177°C)
40° to 437°F
Mobil, AW2
(40° to 175°C)
Mobil, 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 applications
are not suitable for standard air handler components.
Table 27: Recommended Fan Re-lubrication Grease
Charge
Shaft Size – in . (mm)
1/2 to 3/4 (20)
7/8 to 1-3/16 (25-30)
1-1/4 to 1-1/2 (35-40)
1-11/16 to 1-15/16 (45-50)
2 to 2-7/16 (55-60)
2-1/2 to 2-15/16 (65-70)
3 to 3-7/16 (75-80)
3-1/2 to 4 (85-105)
www.DaikinApplied.com
Base
Thickener
NLGI grade
Parafinic
Lithium
mineral oil
Mineral oil
Lithium
Synthetic
Lithium
Synthetic
Lithium
Mineral oil
Lithium
Oz (g)
0.03 (0.85)
0.10 (2.84)
0.15 (4.25)
0.20 (5.67)
0.30 (8.51)
0.5 (15.59)
0.85 (24.10)
1.5 (42.53)
Fan Drive
Before servicing lock out and tag out all power to the
2
unit . Fans or belts cause severe personal injury or death.
2
2
Do not open the hinged access door and screw-fastened
access panels while the unit is operating . Moving parts
2
and strong suction forces can cause severe personal injury
or death.
2
Upon completion of the air balance, replace the variable
pitched motor sheave with a properly sized, fixed sheave. A
matching fixed sheave provides longer belt and bearing life
and minimizes vibration. Initially, it is best to have a variable
pitched motor sheave for the purpose of air balancing. Once
the balance is achieved, fixed sheaves maintain balancing and
alignment more effectively. Replace the adjustable sheaves
with fixed sheaves.
With the electrical power disconnected, locked and tagged
out, measure the diameter of the V-belt outer surface where
it passes around the sheave (pitch diameter). Calculate fan
speed from the motor nameplate rpm.
Fan rpm = motor rpm ×
33
s
M
ervICe and
aInTenanCe
WARNING
WARNING
Measured diameter at motor sheave
Measured diameter at fan sheave
IM 777-8 • Skyline Air Handler
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