Operation; Maintenance - COOK TMX Installation, Operation And Maintenance Manual

Wheel Rotation
Test the fan to ensure the rotation of the wheel is the
same as indicated by the arrow marked Rotation.
115 and 230 Single Phase Motors
Fan wheel rotation is set correctly at the factory. Chang-
ing the rotation of this type of motor should only be at-
tempted by a qualified electrician.
208, 230 and 460 3 Phase Motors
These motors are electrically reversible by switching
two of the supply leads. For this reason, the rotation of
the fan cannot be restricted to one direction at the factory.
See Wiring Diagrams for specific information on reversing
wheel direction.
NOTICE! Do not allow the fan to run in the wrong
direction. This will overheat the motor and cause
serious damage. For 3-phase motors, if the fan is
running in the wrong direction, check the control
switch. It is possible to interchange two leads at
this location so that the fan is operating in the
correct direction.
TMX
Airflow
NOTICE! Do not allow the fan airflow to go in the
wrong direction.
Final Installation Steps
1. Inspect fasteners and setscrews, particularly fan
mounting and bearing fasteners then tighten accord-
ing to Recommended Torque for Setscrews/Bolts.
2. Inspect for correct voltage with a voltmeter.
3. Ensure all accessories are installed.

Operation

Pre-Start Checks
1. Lock out all the primary and secondary power sources.
2. Ensure fasteners and setscrews, particularly those
used for mounting the fan, are tightened.
3. Inspect belt tension and pulley alignment.
4. Inspect motor wiring.
TMX IO&M
5. Ensure belt touches only the pulley.
6. Ensure fan and ductwork are clean and free of debris.
7. Inspect wheel-to-inlet clearance. The correct wheel-
to-inlet clearance is critical to proper fan performance.
8. Close and secure all access doors.
9. Restore power to fan.
Start-Up
Turn on the fan. In variable speed units, set fan to its low-
est speed and inspect for the following:
• Direction of rotation
• Excessive vibration
• Unusual noise
• Bearing noise
• Improper belt alignment or tension (listen for squealing)
• Improper motor amperage or voltage
NOTICE! If a problem is discovered, immediately
shut off the fan. Lock out all electrical power
and check for the cause of the trouble. Refer to
Troubleshooting.
Inspection
Inspection of the fan should be conducted at the first 30
minute, 8 hour and 24 hour intervals of satisfactory op-
eration. During the inspections, stop the fan and inspect
as per the Conditions Chart.
30 Minute Interval
Inspect bolts, setscrews and motor mounting bolts. Ad-
just and tighten as necessary.
8 Hour Interval
Inspect belt alignment and tension. Adjust and tighten
as necessary.
24 Hour Interval
Inspect belt tension. Adjust and tighten as necessary.
Recommended Torque for Setscrews/Bolts (IN-LB)
Setscrews
Key Hex
Size Across
Flats
#8 5/64"
#10 3/32"
1/4 1/8"
5/16 5/32"
3/8 3/16"
7/16 7/32"
1/2 1/4"
5/8 5/16"
3/4 3/8"
7/8 1/2"
1 9/16"

Maintenance

Establish a schedule for inspecting all parts of the fan.
The frequency of inspection depends on the operating
conditions and location of the fan.
Regular inspections are recommended for fans exhaust-
ing non-contaminated air.
It is recommended the following inspections be con-
ducted twice per year:
• Inspect bolts and setscrews for tightness. Tighten as
necessary
• Inspect belt wear and alignment. Replace worn belts
with new belts and adjust alignment as needed. Refer to
Belt and Pulley Installation (page 3)
5
Hold Down Bolts
Recommended
Torque
Size
Min. Max.
15 21 3/8"-16
27 33 1/2"-13
70 80 5/8"-11
140 160 3/4"-10
250 290 7/8"-9
355 405 1"-8
560 640 1-1/8"-7
1120 1280 1-1/4"-7
1680 1920 -
4200 4800 -
5600 6400 -
Recommended
Torque
324
780
1440
2400
1920
2700
4200
6000
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B51108-003