SPX Cooling Technologies MARLEY CLASS F400 - Manual (Page 15)

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
Remedy Cause Trouble
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
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 neces-
sary.
Disconnect load and operate motor. If motor still vibrates, rebal-
ance rotor.
Check fan and pinion shaft with dial indicator. Replace if necessary.
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: