Pentair XLS1000 Water Flow, Filter Cleaning & Care, Circulation Pump, Vacuum & Pressure Leaks

FILTER SYSTEM MAINTENANCE REQUIREMENTS

WATER FLOW

Proper water flow is critical to the heaters performance and longevity. The maintenance of your filtering sys- tem is directly related to the proper operation of the heat pump. See pages 8 for other information regarding filter cleaning and the start up procedures.

FILTER CLEANING & CARE

Your filter system should be cleaned at least twice a month. See manufacturer's directions for proper filter cleaning methods. Size and conditions may require you to clean the filter more often. A filter is considered "dirty", whenever it restricts the flow rate by 10% or more.

CIRCULATION PUMP

The circulation pump must be kept in good working order to provide a steady rate of flow to the heater and filtering system as a whole. The circulation pump must be producing a flow rate in accordance with the manu- facturers specifications within 10%. The pump should run with a "full prime" without excessive restriction on the vacuum and pressure side of the filtering system.

You can use the pressure gauge on the filter tank to de- termine a restriction in the filter due to clogging. After the filter has been replaced or when it is new, you should record the actual operating pressure with a "clean fil- ter". When the pressure increases more than 5 p.s.i., the filter should be cleaned. If the pressure does not return to normal you must replace it. Make sure your pressure gauge is kept in good working condition.

Discharge Outlet	Pump Lid			PSI	Locking Nut &
				Gauge			O-Ring
"Pressure"
Electric		"Suction"			Air Bleed
						Valve
Motor
			Inlet
				Typical			O-Ring
				Cartridge
				Filter			Element
	Lint Trap
	Impeller
	Housing

Typical Circulation Pump

VACUUM & PRESSURE LEAKS

All vacuum and pressure leaks in the filtering system must be eliminated immediately after occurring. Air allowed into the filter system from the vacuum side of the circulation pump will cause premature wear and physical erosion to the heat exchanger and water pip- ing inside the heater. Air turbulence will cause the wa- ter pressure switch to malfunction.

Pressure leaks on the filtering system will allow the sys- tem to lose vacuum and cause the water in the filter and piping to back siphon or reverse flow through the sys- tem when the circulation pump is off. Reverse flow may cause the water pressure switch to malfunction.

CHLORINATORS

See chlorinator placement and chemical use guide-

lines.

Filter Tank

InletOutlet

There are some after market filter element cleaning so- lutions that will help remove oil and minerals that may clog the filter. Oil and minerals can not be removed with normal cleaning and back-washing. Spas are par- ticularly susceptible to oil build up in the filter. Do not acid wash a filter until you have removed all oil and grease with a solution designed to remove such. Acid washing a filter with oil in it will cause that oil to be- come permanently embedded in the fibers. Cartridge filter element replacement is suggested every 1 to 2 years. Sand filters should have the sand replaced every 3 to 5 years. D.E. type filter elements should be re-

16 moved and soaked in a solution at least every two years.