Installation Guide

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8.8 Check for leaks daily for the first two weeks after installation. Furthermore, a pan or tray can
be put under the system in case of any leaks, and a Flood Alarm can be used together for better
protection.
Congratulations!
You have successfully installed your PureDrop RO system.
PUREDROP RO SYSTEM MAINTENANCE
This RO system is designed with ease of use and low maintenance in mind. If you change the filter
cartridges as suggested below, and check TDS level periodically, the system will work properly for
years to come.
Stages 1 – 3 pre-filters: Replace every 6 – 12 months, or sooner if water
flow gets slow.
The frequency depends on the source water quality and water usage. They could last longer in city
water, and shorter in well water. Different areas have different source water. Some customers reported
they had to replace the 1st stage every 1-3 months. Some customers reported they only needed to
replace them every 12 months. To protect the RO membrane in the 4th stage, it is required to replace
the pre-filters at least every 12 months.
How to change in-housing cartridges in 1st – 3rd pre-filter stages
1. Shut off the water supply valve and tank valve, open the faucet to depressurize the system.
Place a bucket or towel underneath the unit to catch any water spills.
2. If there is enough room under the sink and filter system is hung on wall, you can twist the filter
housing off without removing the system from the wall. Otherwise, you will need to pull the