GE PNRQ21LBN - Manual (Page 5)

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Check Valve— The check valve prevents a backward flow of product water from the storage tank. A backward flow could
cause the Reverse Osmosis membrane to rupture.
Automatic Shutoff Assembly— To conserve water, the drinking water system has an automatic shutoff. When the storage tank
has filled to capacity and the drinking water faucet is closed, pressure closes the shutoff. Water flow to the Reverse Osmosis
housing is shut off until drinking water is used again, and pressure drops in the Reverse Osmosis system.
Flow Control— The flow control regulates the flow of water through the Reverse Osmosis cartridge at the required rate to
produce high quality water. The control is located in the 1/4
″ drain line exiting off the manifold.
Faucet and Electronics— The countertop faucet dispenses filtered drinking water when opened. It has a hand-operated
lever, with variable flow adjustment. You can keep the faucet open by removing your hand from the lever once water is
flowing. To comply with plumbing codes, an air gap is built into the faucet drain water connection.
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oubleshooting T
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Operating Instructions
Safety Instructions
Installation Instructions
The electronic faucet provides a six month timer and flow monitor to remind you when it is time to replace your
prefilter and postfilter. Replace these when the amber filter light flashes. The faucet also provides an amber RO light
indicating when the Reverse Osmosis cartridge is no longer filtering out at least 75% of the TDS. Replace this cartridge
when this amber light flashes. The green flashing light will indicate the system is functioning properly.