Feed Pressure Gauge; Flush Tank (Optional); Install Ro Assembly - GE Merlin Installation And Maintenance Manual

14
Rev J
NOTE: When sliding tubing into the drain adapter inlet, wet the tubing.
Water will help the tubing slide into the rubber inlet.

Feed Pressure Gauge

The supplied pressure gauge can be connected to the feed line to monitor system
feed pressure. For proper system performance, the dynamic feed pressure must
be between 40 psi (2.76 bar) and 80 psi (5.52 bar) when the Merlin is in operation.
CAUTION: The feed pressure gauge is intended for use only during
installation and troubleshooting of the RO system. The pressure gauge
should be removed during normal system operation because some
some regulatory agencies did not evaluate the RO system with the feed
pressure gauge in place.

Flush Tank (Optional)

This kit will flush product water over the membranes following each use. The flush
kit extends membrane element life and reduces migration, or "creep" of ions to
the product water side of the membrane elements during periods of non-use. The
"creep" of ions across the membranes often causes lower rejection at system
start-up than the true capabilities of the RO system. Systems with flush kits
installed will maintain higher rejection levels following periods of inactivity.
To install the optional flush kit, remove the 1/4-inch plug and insert the
1/4-inch tubing into the top fitting on the RO assembly manifold. Be sure the
tubing is connected to the flush tank with an appropriate tank fitting. The empty
tank air precharge should be adjusted between 8 to 10 psi.
CAUTION: If the flush tank is not used, the 1/4-inch fitting on the
manifold must be plugged or water will leak out.
STEP 5: INSTALL RO ASSEMBLY
The RO Assembly includes the following components: sumps (3), support leg,
prefilter, RO membrane elements (2), and postfilter. The tubing is attached to the
manifold by the elbow connectors. When choosing a location for the system,
allow enough tubing for it to be moved for periodic servicing of the filters and
membrane elements.
THE BASIC REVERSE OSMOSIS SYSTEM