JOHNSON CONTROLS
3
lubricant which is expelled at startup through the seals should
not be replaced. This purging action will permit cooler operation
and remaining grease will be adequate to
properly
lubricate
the bearing. During the inactive period, the bearing should be
protected from the elements by a securely attached plastic film
and rotated several turns once a month. On belt driven units,
it is advisable to protect the bearings from contamination
by covering the belt guard opening with a suitable material.
Belts should be removed from the motor sheave and stored in
the guard. This will allow both the guard and the motor to be
completely covered with a waterproof material.
SAFETY PRECAUTIONS
DO...
1. Do make sure unit is stopped and electrical power is locked
out before putting hands into inlet or outlet opening or near
belt drive. We suggest a LOCK-OUT and a warning sign on
the start switch cautioning not to start the unit.
2. Do follow maintenance instructions.
3. Do make sure all drive guards are installed at all times fan
is in operation. If the inlet or outlet is exposed, a suitable
guard should also be installed.
4. Do take special care not to open any fan or system access
panels while the system is under pressure (negative or
positive).
5. Never allow untrained or unauthorized persons to work on
equipment.
6. Do take special care when working near electricity. Also
insure the power is off and can not be turned on while
servicing the fan.
7. Do keep area near equipment clean.
DO NOT...
1. DO NOT put hands near or allow loose or hanging clothing
to be near belts or sheaves while the unit is running.
2. DO NOT put hands into inlet or outlet while unit is running.
It is sometimes difficult to tell whether or not it is running
. . . be sure it is not running and cannot be operated before
doing any inspection or maintenance.
3. DO NOT operate fan with guards removed.
4. DO NOT take chances.
INSTALLATION
Mounting holes have been provided for mounting to either
stationary or resilient bases. Fans must be located and fastened
firmly in a level position. The motor and drive are then mounted
in their proper relative positions, if not already mounted on the
fan.
WHEEL CLEARANCE
Before staring up a fan, the wheel should be inspected to assure
that the assembly has not shifted while in transit. Incorrect wheel
clearance could cause damage to the wheel and housing, and
lower the efficiency of the fan. The clearance between the wheel
and housing should be equal around the entire circumference of
the wheel.
MOTOR AND DRIVE ALIGNMENT
It is important that motor pulleys and fan pulleys be properly
aligned to allow belts to run true and straight. Misalignment can
result in blower noise and excessive belt wear.
BELT TENSION
To assure performance and belt life, proper tensioning of the
belts is required. Adjustable motor bases are provided on
Arrangement 9 fans for belt tensioning. Belt tension should be
provided such that belt slippage does not exceed one (1) second
duration at fan start up. Check belt tension at least two (2) times
during the first day of operation.
HEAT FAN PACKAGE
All YORK® by Johnson Controls heat fan packages are designed
based on a maximum temperature rise of 15°F/min.
FAN ROTATION
Fan rotation per AMCA is determined from the discharge end
of the fan. YORK® by Johnson Controls provides a rotation
sticker on the fan housing for verification. Bump start the fan
to confirm rotation is correct before running fan at full speed.
Running the fan in reverse may overload and possibly damage
the motor.
INTRODUCTION (CONTINUED)
AND INSTALLATION