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Rev: 01/18/2021
MAINTENANCE
The filter is virtually maintenance free. Visually inspect the finish and touch-up any blemishes. Inspect all tubing and
connections for any signs of wear. Replace any worn tubing.
WARNING
Before servicing the Defender unit, ensure that the piping has de-pressurized and the isolation valves are locked out. The control
enclosure should be disconnected and locked out before opening. Do not service the pneumatic components without relieving the air
pressure.
General Maintenance
Component
Frequency
Procedure
Tubing
Every 3 months
Inspect all tubing and connections for
wear and replace if needed
Head bolts
Every 3 months
Check the torque and tighten to
55 ft-lb. (75 N-m) if necessary
Filter/regulator
Every 3 months
Refer to the manufacturer’s owner’s
manual for details. When replacing the
airline filter element, use SMC®
Corporation Part # AF40P-060S.
Flexible tube cleaning
•
Varies depending on bather load.
•
Required when the system influent
pressure builds to 10 psi within an
hour after new media has been
loaded.
Refer to Flexible Tube Element Wash
procedure.
Head gasket
•
Inspect after every upper head
removal to ensure proper sealing.
Wipe any dirt or perlite media off the
gasket to ensure a proper seal.
Replace gasket if necessary.
Indoor Pool Chemical Cleaning Frequency
•
Water parks and multi-use community centers: Twice annually.
•
Competition pools/Lap pools/Dive pools etc.: Once annually.
Outdoor Pool Chemical Cleaning Frequency
•
Up to four months of operation: At the end of the season.
•
Up to nine months of operation: At the middle and the end of the season.
•
Year-round operation: Three times at convenient intervals throughout the year.
