5
Operation
1. Open the system vent to allow air to escape as the housing fills for the first time. Make
sure the drain port and the pressure gauge port are plugged and secure.
2. Slowly open the system inlet to gradually fill up the housing. A sudden system start may
cause water hammer to occur and damage the housing lid assembly.
3. After the housing fills and liquid appears at the vent, close the vent. Slowly close the
outlet valve and allow pressure to build in the housing. Look for any abnormal pressure
readings (if gauges are installed) and check for any system leakage.
4. If leakage is detected, close the inlet valve and open the vent to release system
pressure. Open the drain port to empty the housing, remove the lid and check for any
damaged parts, or loose fittings. Once the leak has been fixed, restart the system by
repeating Operation steps 1-3.
5. Open the system outlet first when no leakage is observed under pressure. Your filter
system is now ready for normal operation.
Filter Cartridge Exchange
The service life of a filter cartridge is depending on the feed water quality and the system
usage. Under normal operation, change the filter cartridge when the differential pressure
is about 20 psi or annually, whichever comes first.
To change the filter cartridge:
1. Close filter inlet and outlet valves.
2. Slowly open the vent to release the system pressure.
3. Open the drain valve and empty the housing.
4. Open the filter housing lid.
5. Remove the filter cartridge from the filter housing by pulling the diffuser plate upwards.
Unscrew the diffusion plate from the cartridge. Rinse the inside of the housing, if
necessary.
6. Repeat step #3 in the ‘Installation’ section above.
7. Close and secure the filter housing lid.
8. Close the drain valve.
9. Follow the instruction under “Operation” to restart the service.
