User manual

30
Monthly (Weekly at start up): Observe, touch, and listen to the fluid cooler.
Become accustomed to its normal appearance, sound, and level of vibration.
Abnormal aspects relating to the rotating equipment should be considered
reason to shut down the fluid cooler until the problem can be located and cor-
rected. Observe operation of the motor, coupling (or drive shaft), Geareducer,
if equipped and fan. Become familiar with the normal operating temperature of
the motor(s), as well as the sight and sound of all components as a whole.
If equipped, check Geareducer oil level. Shut down the unit and allow 5 min-
utes for the oil level to stabilize. Add oil if required. Check for Geareducer oil
leaks. Check the Geareducer as well as any optional oil lines to external oil
dipstick/sight glass.
Inspect louvers, drift eliminators and basin trash screens and remove any
debris or scale which may have accumulated. Replace any damaged or worn
out components. Use of high-pressure water may damage the eliminator and
louver material.
Observe operation of the float valve. Depress the operating lever to make
sure that the valve is operating freely. Inspect the suction screen for plugging.
Remove any debris that may have accumulated.
Check for any buildup of silt on the floor of the collection basin. Mentally make
note of the amount, if any, so future inspections will enable you to determine
the rate at which it is forming.
If equipped with dampers, lubricate the pivot points of the individual blades.
Observe the area where the steel pivot pins penetrate the assembly’s outer
frame. The pin should rotate freely in the frame. In locations with severe hard
water supply or climate, apply grease to the pivot points and linkage. This will
both lubricate and seal out oxygen and moisture from the pivot points and
help prevent hard water scale build-up.
Every 3 months: If equipped, lubricate fan shaft bearings. While rotat-
ing equipment by hand, grease the bearings until a bead forms around the
seals—a maximum charge of 0.30 ounces (MHF702-MHF704) and 1.4
ounces (MHF706-MHF707) is recommended. Mobil SHC 460 grease is
recommended.
Maintenance