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Installation & Operation Manual
Copyright © Puretec Pty Ltd 2020
Cartridge Replacement
Cartridge Replacement Procedure
To change the filter cartridges please adhere to the following procedure:
1 Turn water supply off using the shut off valve located inside the unit (see Fig 10)
and relieve the pressure by opening a downstream tap or pressing the red pressure
relief button on the housings.
2 Unscrew the filter bowls. If the bowl is difficult to undo, the spanner provided may
be used to make it easier. Remove old cartridges and dispose in the correct manner.
3 Clean bowls with soap and warm water and rinse thoroughly. Check O-rings for
damage and replace if necessary.
4 Check O-ring lubrication and if necessary apply a light coating of food grade silicone
lubricant (or similar).
5 Remove all packaging from new filter cartridges and insert into housing bowls
making sure cartridges are properly seated over the spigot in base of the bowls.
Remember to record the model number of the cartridges you use & install date.
6 Hold bowls upright while screwing in the housings. Make certain that the spigot
in the housing heads is located centrally to the cartridges to make a good seal.
Tighten the bowls until firm. HAND TIGHTEN ONLY. DO NOT OVER TIGHTEN.
7 Open a downstream tap to allow air to be released and gently open water supply
allowing all air to be purged.
8 Allow water to run for 1-2 minutes to flush the system.
9 Close down stream tap and check the Hybrid system for leaks. Flush system for 1-2
minutes after any period of non-use more than 2 weeks. For a period of non-use of
6 months or more, it may be necessary to replace the cartridges.
