REYMSA COOLING TOWERS, INC.
www.reymsa.com
54
D.7. SPRAY PUMP
It is of the utmost importance to have the bearings properly lubricated at all times.
Ball Bearings:
Ball bearings are greased at the manufacturer’s factory. Grease will not ow out during shipment, so no
checking will be required at start-up.
Regrease bearings as indicated by motor manufacturer’s instructions. Normally greasing is required every
two (2) years or 3,000 hours of operation. On motors, grease is usually introduced with a grease gun
through a grease ttin.
Mechanical Seal
Mechanical seals are the most delicate component of the pump. Special care has to be given to them to
assure trouble-free operation.
The sealing element of a mechanical seal consists of a carbon washer rotating against a stationary ring.
Surfaces of both are highly lapped to assure sealing.
Any dirt that penetrates between the two mating parts will cause a rapid wear of the seal faces and will
ultimately result in seal leakage.
New heating systems are usually contaminated by various materials such as construction debris, welding
slugs, pipe joint compound, mill scale, etc. It is of utmost importance that such systems be cleaned out
thoroughly before putting pump into continuous operation.
Cleaning of a heating system is simple and easy. First ush out system with cold water at city pressure to
remove all loose foreign matter that penetrated into the system. Afterwards, boil out system with chemicals
to remove dirt adhering to pipes.
Chemicals most commonly used for this procedure are sodium triphosphate, sodium carbonate, or caustic
soda but any nonfoaming detergents as used in dishwashers can be applied.
Fill system with clean water, add cleaning chemicals (1 lb. for every 40 to 50 gallons of water or manufacturer’s
instruction). Start pump and heat up system. Let system run for a few hours and then drain and rell with
fresh water. Your pumps are now ready for continuous duty.
Maintenance
Overgreasing bearings can cause premature bearing failures.
Do not mix dissimilar greases.
Do not lubricate while pump is running.
Do not remove or install drain plug while pump is running.
CAUTION
Filling Filling
Figure D-1: Lubrication Points.
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