Membrane Replacement - Thermo Scientific 1267 Series Operating Manual

Section 8
Maintenance
Membrane
Replacement
8-2 Reverse Osmosis System
A variety of factors will determine the service life of the RO membrane.
With proper maintenance and monitoring, the membrane should last a
minimum of 1 year.
To replace the membrane, ensure that the power and water are disconnected
from the unit. Have a container ready as the membrane will have water
inside.
1. Remove the old membrane by disconnecting the reject and product
tubing from the top of the membrane and the feed water connection
from the bottom. See Section 4 for tubing removal instructions.
2. Install the new membrane by following the "Membrane Installation"
section of this manual.
3. Disconnect the product to storage tubing at the reservoir and route to
drain.
Warning Discard the RO membrane product water for at least two hours
during the initial operation. The membrane contains a preservative solution
to prevent microbiological growth.
4. Membrane Rinse - Restart unit and allow it to operate and send water to
drain for a minimum of two hours. This will rinse the membrane of its
preservatives. It is possible that during this time the "Low Product
Purity" LED may illuminate.
5. It is recommended that prior to connecting product water tubing to the
storage reservoir, the flowrate be measured and recorded in the operating
log.
6. After the membrane rinse the unit can be shut down and the product
water tubing can be connected to the storage reservoir, connect float
cable, check for leaks, etc.
7. Reset the membrane timer by following the "Resetting the Membrane
Timer" section included in this manual.
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