SPX Cooling Technologies F400 Troubleshooting, Cause, Remedy, Routine periodic maintenance must

Troubleshooting

Trouble	Cause	Remedy
Wrong Rotation (Motor)	Wrong sequence of phases	Change any two of the three motor leads.
Geareducer Noise	Geareducer bearings	If new, see if noise disappears after one week of operation.
		Drain, flush and refill Geareducer. See Geareducer User Manual.
		If still noisy, replace.
	Gears	Correct tooth engagement. Replace badly worn gears. Replace
		gears with imperfect tooth spacing or form.
Unusual Fan Drive	Loose bolts and cap screws	Tighten all bolts and cap screws on all mechanical equipment
Vibration		and supports.
	Unbalanced drive shaft or worn	Make sure motor and Geareducer shafts are in proper alignment
	couplings	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.
	Fan	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.
	Worn Geareducer bearings	Check fan and pinion shaft endplay. Replace bearings as
		necessary.
	Unbalanced motor	Disconnect load and operate motor. If motor still vibrates, rebal-
		ance rotor.
	Bent Geareducer shaft	Check fan and pinion shaft with dial indicator. Replace if neces-
		sary.
Fan Noise	Loose fan hub cover	Tighten hub cover fasteners.
	Blade rubbing inside of fan cylinder	Adjust cylinder to provide blade tip clearance.
	Loose bolts in blade clamps	Check and tighten if necessary.

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
	Ladders, Stairways,￿
be performed on all personnel access
	Walkways, Handrails, Covers,￿	Davits, Derricks, and Hoists
and material handling accessories in	Decks and￿
accordance with the following schedule:
	Access Doors
Inspect for General Condition	Semi-annually	Semi-annually
Inspect and Repair for Safe Use	Yearly
Inspect and Repair Before Each Use		As Required

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