Filter
Top Products
15
Ladders, Stairways,
Walkways, Handrails, Covers,
Decks and
Access Doors
Davits, Derricks, and Hoists
Inspect for General Condition
Semi-annually
Semi-annually
Inspect and Repair for Safe Use
Yearly
Inspect and Repair Before Each Use
As Required
Troubleshooting
RemedyCauseTrouble
Wrong sequence of phases
Geareducer bearings
Gears
Loose bolts and cap screws
Unbalanced drive shaft or worn
couplings
Fan
Worn Geareducer bearings
Unbalanced motor
Bent Geareducer shaft
Loose fan hub cover
Blade rubbing inside of fan cylinder
Loose bolts in blade clamps
Change any two of the three motor leads.
If new, see if noise disappears after one week of operation.
Drain, flush and refill Geareducer. See Geareducer User Manual.
If still noisy, replace.
Correct tooth engagement. Replace badly worn gears. Replace
gears with imperfect tooth spacing or form.
Tighten all bolts and cap screws on all mechanical equipment
and supports.
Make sure motor and Geareducer shafts are in proper alignment
and “match marks” properly matched. Repair or replace worn
couplings. Rebalance drive shaft by adding or removing weights
from balancing cap screws. See Drive Shaft User Manual.
Make certain all blades are as far from center of fan as safety
devices permit. All blades must be pitched the same. See Fan
User Manual. Clean off deposit build-up on blades.
Check fan and pinion shaft endplay. Replace bearings as
necessary.
Disconnect load and operate motor. If motor still vibrates, rebal-
ance rotor.
Check fan and pinion shaft with dial indicator. Replace if neces-
sary.
Tighten hub cover fasteners.
Adjust cylinder to provide blade tip clearance.
Check and tighten if necessary.
Wrong Rotation (Motor)
Geareducer Noise
Unusual Fan Drive
Vibration
Fan Noise
SAFETY FIRST–The tower has been designed to provide a safe working environment while either operating
or shut down. The ultimate responsibility for safety rests with the Operator and Owner. When flow to the tower
is shut off or when portions of the tower require maintenance, temporary safety barricades may be required
around openings, and other safety precautions such as safety harnesses should be utilized where appropriate
for compliance with OSHA regulations and standards and good safety practices.
Routine periodic maintenance must
be performed on all personnel access
and material handling accessories in
accordance with the following schedule: