Understanding and reacting to the performance of a reverse osmosis (RO) system is necessary for continued successful operation. It is this interaction that allows us to quickly and correctly identify and correct issues that may arise. The following discussion is intended to explain the importance of RO maintenance.
First, we must understand why maintenance is needed. The following questions will answer some of these needs.
* Have you ever had a problem with an RO unit?
* Have you ever had the same problem occur more than once?
* Has anyone ever asked about the performance before the problem occurred?
* Has a problem seemed to happen suddenly or was it something that slowly occurred and was just ignored until it was too late?
* Did anyone have documentation illustrating past performance?
Understanding and performing routine RO maintenance can prevent most problems before they occur. RO maintenance is more than repairing and replacing parts. It means taking steps to reduce or prevent problems from occurring and being aware that a problem may be coming before it happens. Ensuring the RO is properly applied to the project and that feed water pretreatment (and the feed water itself) is checked on a regular basis also are instrumental. You also must check that normal scheduled maintenance occurs. If the system is large enough, daily log sheets are to be filled out. Maintenance is a combination of all these.
Project Care
An RO unit is only as good as the application allows. The first step in preventative care is to ensure the feed water is of satisfactory condition. Customers just don’t want to pay for that all-important feed water analysis, yet it cannot be stressed strongly enough. The larger the system, the greater the importance. Be aware of your feed water source. Surface water can produce needs that groundwater does not and vice versa. If your community mixes the two, it can be a "double whammy." The point is to understand your feed water and install the proper pretreatment.
Understand both the amount of water and how the water will be used. Try to avoid traps such as knowing it needs to be 3,000 gallons per day and not knowing the day is eight hours. Make sure the unit is properly applied to the application and that any post treatment will allow proper flow and pressure.