SPX Cooling Technologies MHF702, MHF705 Motor Relubrication Instructions, Maintenance, be started

	Maintenance
	Clean and disinfect cooling tower with biocides. Systems with biofouling,
	high general bacterial counts, or positive cultures of legionella may require
	additional cleaning. Refer to “Fluid Cooler Cleaning” section—page 21.
	Consult your water treatment expert as to prudent biological evaluation
	testing.
Note	Geareducer models used on MH Fluid Coolers are designed for 5-year
	oil change intervals. To maintain five-year change intervals, use only
	oil designed specifically for these Geareducers. If, after five years,
	turbine-type mineral oil is used, the oil must be changed semiannu-
	ally. Refer to the Geareducer User Manual for oil recommendations
	and further instructions.
	Annually: Relubricate motor(s) according to the manufacturer’s instruc-
	tions. See instructions on the next page for towers with the motor located
	outside the plenum option.
	Check to see that all bolts are tight in the fan and mechanical equipment
	region, including the fan cylinder and fan guard. Refer to Component User
	Manuals for torque values.
	Inspect the fluid cooler thoroughly, making maximum use of instructions
	given in the separate user manuals. Check structural bolted connections
	and tighten as required. Make preventive maintenance repairs as neces-
	sary.
	Every 5 Years: If equipped, change Geareducer oil. Refer to the Geareducer
	User Manual for instructions.
	Motor Relubrication Instructions
	Motor located outside plenum option. Double-flow models MHF706 and
	MHF707 only.
	Open and lock out disconnect switch to make certain motor cannot
	be started.
	1. Remove guard as shown in Figure 4. Opposite end motor bearing is
	accessible from outside the tower.
	2. Remove grease fill and relief plugs at both shaft extension end and
	opposite end bearings and remove hardened grease, using clean
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