Daikin Vision Installation And Maintenance Manual page 42

Table 24: Re-lubrication Intervals
Use NLGI #2 Lithium or Lithium Complex Grease
Bearing
Speed
Temperature
Up to 120°F
100 rpm
(50°C)
Up to 150°F
500 rpm
(65°C)
Up to 210°F
1000 rpm
(100°C)
Over 210°F
1500 rpm (100°C) to 250°F
(120°C)
Up to 150°F
Above 1500 rpm
(65°C)
Over 150°F
Max catalog rating (65°C) to 250°F
(120°C)
Above 250°F
(120°C)
Table 25: 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)
IM 915-13 • VISION - EXTENDED SIZES
Cleanliness Relub . intervals
Clean 6 to 12 months
Clean 2 to 6 months
2 weeks to 2
Clean
months
Clean Weekly
Dirty/wet 1 week to 1 month
Dirty/wet Daily to 2 weeks
Contact Browning
Oz . (g)
0.03 (0.85)
0.10 (2.84)
0.15 (4.25)
0.20 (5.67)
0.30 (8.51)
0.50 (15.59)
0.85 (24.10)
1.50 (42.53)
Fan Drive Adjustments
WARNING
Before servicing fan lock out and tag out all power to the unit.
Fans or belts can cause severe personal injury or death.
WARNING
Do not open the hinged access door and screw-fastened
access panels while the unit is operating. Moving parts and
strong suction forces can severe personal injury or death.
WARNING
Moving belt and fan can cause severe personal injury or death.
During installation and filter maintenance:
• Verify that the belt and fan guards on plenum fan units are
always in place.
• Lock and tag out fans to prevent accidental start up.
• Do not enter the filter compartment until the fan is completely
stopped.
• Use approved equipment for reaching filters located
above normal reach. Do not step on filter frames or unit
components.
• Floor surfaces must be dry and free of oil or grease.
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 ×
42
Service and Maintenance
Measured diameter at motor sheave
Measured diameter at fan sheave
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