SPX Cooling Technologies 98-1514E Troubleshooting, Cause, Remedy, Loose bolts and cap screws

Troubleshooting

Trouble	Cause	Remedy
	Loose bolts and cap screws	Tighten all bolts and cap screws on all mechanical equipment
		and supports.
		Make certain all blades are as far from center of fan as safety
Unusual Fan Drive	Fan	devices permit. All blades must be pitched the same. See
		Fan User Manual. Clean off deposit build-up on blades.
Vibration
	Worn fan shaft bearings	Check fan shaft endplay. Replace bearings as necessary.
	Unbalanced motor	Disconnect load and operate motor. If motor still vibrates,
		rebalance rotor.
	Blade rubbing inside of fan cylinder	Adjust cylinder to provide blade tip clearance.
Fan Noise	Loose bolts in blade clamps	Check and tighten if necessary.
	Fan shaft bearings	Grease bearings.
Scale or foreign substance Insufficient blowdown		See "Water Treatment" section of this manual
in circulating water system	Water treatment deficiency	Consult competent water treating specialist. See "Water
		Treatment" section of this manual
		Check to see if local heat sources are affecting tower. See if
	Entering wet bulb temp. is above design	surrounding structures are causing recirculation of tower
		discharge air. Discuss remedy with Marley representative.

Cold Water Temperature

Too Warm

(See "Tower Operation")

Design wet bulb temp. was too low	May have to increase tower size. Discuss remedy with Marley
	representative.
Actual process load greater than design	May have to increase tower size. Discuss remedy with Marley
	representative.
Overpumping	Reduce water flow rate over tower to design conditions.
	Check motor current and voltage to be sure of correct contract
	horsepower. Re-pitch fan blades if necessary. Clean louvers,
Tower starved for air	fill and eliminators. Check to see if nearby structures or
	enclosing walls are obstructing normal airflow to tower.
	Discuss remedy with Marley representative.

	Distribution basins overflowing	Reduce water flow rate over tower to design conditions. Be
		sure hot water basin nozzles are in place and not plugged.
Excessive Drift Exiting		Check to see that integral fill, louvers, and eliminators are
Tower		clean, free of debris, and installed correctly. If drift eliminators
	Faulty drift elimination	are separate from fill, make sure they are correctly installed in
		place. Clean if necessary. Replace damaged or worn out
		components.

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