SPX Cooling Technologies Marley MH Fluid Cooler user manual Troubleshooting, Cause, Remedy

Troubleshooting

Trouble	Cause	Remedy
		If new, see if noise disappears after one week of operation. Drain flush,
Geareducer noise. (If	Geareducer bearings	and refill Geareducer oil. See Geareducer User Manual. If still noisy,
		replace.
equipped).
	Gears	Correct tooth engagement. Replace badly worn gears. Replace gears
		with broken or damaged teeth.
	Loose bolts and cap screws	Tighten all bolts and cap screws on all mechanical equipment and
		supports.
		Make sure motor and Geareducer shafts are in proper alignment and
	Unbalanced drive shaft or worn couplings. (If	"match marks" properly matched. Repair or replace worn couplings.
	equipped)	Rebalance drive shaft by adding or removing weights from balancing
		cap screws. See Driveshaft User Manual
		Make certain all blades are as far from center of fan as safety devices
Unusual fan drive vibration	Fan	permit. All blades must be pitched the same. See Fan User Manual.
		Clean off deposit build-up on blades
	Worn Geareducer bearings. (If equipped)	Check fan and pinion shaft endplay. Replace bearings as necessary.
	Worn fan shaft bearings. (Belt drive).	Check fan shaft endplay. Replace bearings as necessary.
	Unbalanced motor	Disconnect load and operate motor. If motor still vibrates, rebalance
		rotor.
	Bent Geareducer shaft. (If equipped).	Check fan and pinion shaft with dial indicator. Replace if necessary.
	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 bearing. (Belt drive).	Grease bearings.
Scale or foreign substance in	Insufficient blowdown	See "Water Treatment" section of this manual.
		Consult competent water treating specialist. See "Water Treatment"
circulating water system	Water treatment deficiency
		section of this manual
		Check to see if local heat sources are affecting fluid cooler. See if
	Entering wet bulb temperature is above design	surrounding structures are causing recirculation of tower discharge air.
		Discuss remedy with Marley representative.
	Design wet bulb temperature was too low.	May have to increase fluid cooler size. Discuss remedy with Marley
		representative
Cold water temperature too
	Actual process load greater than design	May have to increase fluid cooler size. Discuss remedy with Marley
warm.
		representative
See "Tower Operation."	Overpumping	Reduce water flow rate over fluid cooler to design conditions.
		Check motor current and voltage to be sure of correct contract
		horsepower. Repitch fan blades if necessary. Clean louvers, fill and
	Fluid cooler starved for air	eliminators. Check to see if nearby structures or enclosing walls are
		obstructing normal airflow to fluid cooler. Discuss remedy with Marley
		representative.
	Distribution basins overflowing	Reduce water flow rate over fluid cooler to design conditions. Be sure
		distribution water basin nozzles are in place and not plugged.

Excessive drift exiting fluid

cooler

Faulty drift elimination

Check to see that integral fill. Louvers and eliminators are clean, free of debris and installed correctly. If drift eliminators are separate from fill, make sure they are correctly installed and in place. Clean if necessary. Replace damaged or worn out components

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