YORK INTERNATIONAL
44
Maintenance
MOTOR LUBRICATION PROCEDURE
Be sure that the grease you are adding to the motor is
compatible with the grease already in the motor. Con-
sult you Baldor distributor or an authorized service cen-
ter if a grease other than the recommended type is to
be used.
To avoid damage to motor bearings,
grease must be kept free of dirt. For
an extremely dirty environment, con-
tact your Baldor distributor or an au-
thorized Baldor Service Center for
additional information.
With Grease Outlet Plug
1. Clean all grease fittings.
2. Remove grease outlet plug.
3. If motor is stopped, add the recommended amount
of grease.
If motor is to be greased while running, a slightly
greater quantity of grease will have to be added.
Add grease slowly until new grease appears at shaft
hole in the endplate or purge outlet plug.
4. Re-install grease outlet plug.
Without Grease Outlet Plug
1. Disassemble motor.
2. Add recommended amount of grease to bearing
and bearing cavity. (Inboard Bearing should be about
1/3 full of grease and outboard bearing cavity should
be about 1/2 full of grease.)
Bearing is 1/3 full when only one side
of bearing is completely full of grease.
3.Assemble motor.
Belt Tension
Adjust the belt tension if necessary. Never use a belt
dressing on the belts. If belts slip with the proper ten-
sion, use a good grade of belt cleanser to clean the
belts. Use the procedure outlined under the heading
“Belts” for adjusting the tension. (See Figures 43 & 44)
Never use excessive tension as this
could result in damaging the bearing,
motor pulleys or motor base. See drive
label on fan housing adjacent to drive
for specific details on tension.
When it is necessary to replace one belt in a given set,
the entire set of belts must be replaced.
Every Year
1. Check the fan wheels and inspect the drain pan for
sludge and foreign material. Clean if required.
2. Observe the operation of all dampers and make
any necessary adjustments in linkage and blade ori-
entation for proper operation.
3. Inspect and lubricate inlet vane bearings with sili-
cone lubricant.
With the exception of the variable in-
let vanes, standard damper bearings
contain synthetic bushings which do
not require lubrication.
VARIABLE INLET VANES
If the unit contains variable inlet vanes, inspect the link-
ages where necessary. Lubricate the bearings at each
end of the VIV blades with SAE 30 oil after cleaning
any dust or dirt from around each bearing.
HUMIDIFIERS
Humidifiers should be controlled by a humidistat or
means to avoid over-humidification. Whenever steam
or raw water is discharged into a system, high-limit hu-
midistat should be used to control the humidifier.
When the system is new, the strainer screen should be
inspected at least twice during the first year. If fouled,
more frequent inspection and cleaning should be ad-
ministered.
At least twice a year, verify that the steam trap is func-
tioning properly. A blocked steam trap will be cold. A
“blowing” steam trap will be hot for a continuous dis-
tance up to 30 feet; it will make noise at intervals; and
the discharge pipe will be progressively cooler begin-
ning at the trap.
Control vanes should be inspected at least annually to
verify that they are working properly.
