Bearings - Daikin Maverick II MPS062E Installation And Maintenance Manual

Bearings

Bearing overheating can damage the equipment. Do not over lubricate
bearings.
Use only a high grade mineral grease with a 200°F safe operating
temperature. See below for specific recommended lubricants.
For safety, stop rotating equipment. Add one half of the recommended
amount shown in Table 13. Start bearing and run for a few minutes.
Stop bearing and add the second half of the recommended amount. A
temperature rise, sometimes 30°F (1°C), after relubrication is normal.
Bearing should operate at temperature less than 200°F (94°C) and should
not exceed 225°F (107°C) for intermittent operation. For lubrication
schedule, see Table 11. For any applications that are not in the ranges of
the table, contact Daikin
The following tables state general lubrication recommendations based
on our experience and are intended as suggested or starting points only.
For best results, specific applications should be monitored regularly and
lubrication intervals and amounts adjusted accordingly.
Motor Bearing Lubrication
Supply Fans — Supply fan motors should have grease
added after every 2000 hours of operation. Using the following
procedure, relubricate the bearings while the motor is warm,
but not running. Use one of the greases shown in
1. Remove and clean upper and lower grease plugs.
2. Insert a grease fitting into the upper hole and add clean
grease (Table 12) with a low pressure gun.
3. Run the motor for five minutes before replacing the
plugs.
NOTE: Specific greasing instructions are located on a
tag attached to the motor. If special lubrication
instructions are on the motor, they supersede all other
instructions.
Condenser Fan — Condenser fan motors are permanently
lubricated and require no periodic lubrication.
Propeller Exhaust Fans
"Propeller Exhaust Fan Option" on page
www.DaikinApplied.com
CAUTION
CAUTION
NOTICE
Table
63.
Fan Shaft Bearing Lubrication
Any good quality lithium or lithium complex base grease, using
mineral oil, conforming to NLGI grade 2 consistency, and an
oil viscosity of 455-1135 SUS at 100°F (100–200 cSt at 40°C)
may be used for relubrication.
Compatibility of grease is critical. Relubricatable Browning
bearings are supplied with grease fittings or zerks for ease of
lubrication with hand or automatic grease guns. Always wipe
the fitting and grease nozzle clean.
Table 10: Recommended Lubricants and Amounts for Fan
Motor Bearings
Mfr . Texaco, Polystar or Polyrex EM (Exxon Mobile) or
Grease
NEMA 56 to
140
Size 140
Amount
to Add 0.08 0.15
(oz.)
Table 11: Relubrication Intervals
Speed
100 rpm
500 rpm
1000 rpm
1500 rpm
Above 1500 rpm
12. Max catalog
rating
Use NLGI #2 Lithium or Lithium Complex Grease
Table 12: 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, 68° to 356°F
SHC100 (50° to 180°C)
Chevron,
60° to 450°F
Altiplex
(51° to 232°C)
Synthetic
Exxon, 40° to 300°F
RONEX 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 13: Recommended Fan Relubrication 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)
97
Rykon Premium #2 or Penzoil Pen 2 Lube
180 210 250 280 320
0.19 0.30 0.47 0.61 0.76
Temperature Cleanliness
Up to 120°F (50°C) Clean
Up to 150°F (65°C) Clean
Up to 210°F (100°C) Clean
Over 210°F (100°C) to
Clean
250°F (120°C)
Up to 150°F (65°C) Dirty/wet
Over 150°F (65°C) to
Dirty/wet
250°F (120°C)
Above 250°F (120°C)
Base Thickener
Parafinic
Lithium
mineral oil
Mineral oil Lithium
Synthetic Lithium
Synthetic Lithium
Mineral oil Lithium
Oz . (grams)
0.50 (15.59)
0.85 (24.10)
1.50 (42.53)
IM 991-2 • MAVERICK II ROOFTOP
Maintenance
360 400 440
0.81 1.25 2.12
Relub . intervals
6 to 12 months
2 to 6 months
2 weeks to 2
months
Weekly
1 week to 1 month
Daily to 2 weeks
Contact Browning
NLGI grade
2
2
2
2
2
0.03 (0.85)
0.10 (2.84)
0.15 (4.25)
0.20 (5.67)
0.30 (8.51)