JOHNSON CONTROLS
5
MOTOR LUBRICATION
Regrease or lubricate motor bearings according to manufacturer’s
recommendations. DO NOT OVER LUBRICATE. Motor
manufacturer’s lubrication recommendations are printed on tags
attached to motor. Should these tags be missing the following
will apply:
Fractional Horsepower Ball Bearing Motors:
Under normal conditions, ball bearing motors will operate for
five years without relubrication.Under continuous operation at
higher temperature (but not to exceed 140°F ambient) relubricate
after one year.
Integral Horsepower Ball Bearing Motors
Motors having pipe plugs or grease fittings should be relubricated
while warm and at a stand still. Replace one pipe plug on each
end shield with grease fitting. Remove other plug for grease
relief. Use low pressure grease gun and lubricate until grease
appears at grease relief.
Allow motor to run for 10 minutes to expel excess grease.
Replace pipe plugs. Recommended relubrication intervals
general guide only.
These ball bearing greases or their equivalents are satisfactory
for ambient temperatures from 20° F to 200° F.
•
Chevron SRIU #2 (Standard Oil of California)
•
Chevron BRB #2 (Standard Oil of California)
•
Premium RB (Texaco, Inc.)
•
Alvania No.2 (Shell Oil Company)
Make certain motor is not overloaded. Check amps. with
nameplate. KEEP MOTORS DRY. Where motors are idle for
a long time, single phase heaters or small space heaters might be
necessary to prevent water condensation in windings.
START-UP
Before Start-Up:
Fastenings
- It is recommended that all foundation bolts,
impeller hub set screws and bearing set screws be checked for
tightness before start up.
Access Doors
- They should be tight and sealed.
NOTE: The maximum torque values for weld studs are shown in the below table.
The fan bearings, whether pillow block or flange mounted, are
prelubricated and should not require additional grease for start
up.
“Bump” the motor to check for proper impeller rotation. The
motor should be started in accordance with manufacturer’s
recommendations.
Bearings
- Check bearing alignment and make certain they are
properly locked to shaft.
Impeller
- Turn over rotating assembly by hand to see that it
runs free and does not bind or strike fan housing. If impeller
strikes housing, it may have to be moved on the shaft or bearing
pillow blocks and reshimmed. Check location of impeller in
relation to fan inlets. Be sure fan housing is not distorted. See
ALIGNMENT section.
Driver
- Check electrical wiring to the motor. See motor section.
Guards
- Make certain all safety guards are installed properly.
Belt Drive
- Must be in alignment; with belts at proper tension.
See belt drive section.
Duct Connections
- The connections from fan to ductwork
must not be distorted. Ducts should never be supported by the
fan. Expansion joints between duct connections should be used
where expansion is likely to occur or where the fan is mounted
on vibration isolators. All joints should be sealed to prevent air
leaks and all debris removed from ductwork and fan.
START-UP
HP
Range
Std. Duty
8 Hr/Day
Severe Duty
24 Hr/Day
Dirty, Dusty
Extreme Duty
Very Dirty,
High Ambients
1 1/2 - 7 1/2
5 Years
3 Years
9 Months
10 - 40
3 Years
1 Year
4 Months
50 - 150+
1 Year
9 Months
4 Months
Stud Size
Torque (FL. LBS.)
1/4”
5
15/16”
10
3/8”
17
1/2”
39
5/8”
83
