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RELEASING WATER PRESSURE
Prior to replacing any of the RO-150 filters or
repairing connections, water pressure must be
relieved from the system.
1. Unplug transformer from the electrical outlet.
2. Close the inlet and storage tank shut off valves.
A. Make sure the bypass valve is closed.
3. Place sampling line in container and open
sampling shutoff valve to relieve pressure in the
system.
NOTE: Failure to relieve system water pressure
makes it very difficult to remove the pre-filter
housings or make repairs to connections.
RESTARTING THE SYSTEM
1. Close the storage tank valve.
A. Make sure bypass valve is closed.
2. Place sampling line into a container and open
sampling valve.
3. Open the 3/8" inlet and outlet ball valves. Open
water supply valve if necessary.
4. Connect transformer to power source.
NOTE: Inlet solenoid valve will not open unless
power is applied to the RO filtration system.
5. Allow system to operate several minutes to
purge trapped air from the system.
6. After air is purged from the system and while
the system is producing water, close the outlet
ball valve.
A. Verify that the booster pump turns off
immediately and water stops flowing to the
drain.
NOTE: The system is now under full pressure.
7. Check all fittings for leaks.
A. If a leak is detected, release water
pressure from the system before
attempting repairs. Refer to RELEASING
WATER PRESSURE as outlined under
MAINTENANCE.
8. After successful checks, close the sampling ball
valve and open the storage tank and outlet ball
valves.
PRE-FILTER REPLACEMENT
A filter wrench is provided to remove the pre-filter
housings. In most cases, the filter wrench is not
needed if the system pressure is relieved.
CAUTION: Do not apply excessive force on the
filter mounting hardware when removing or
replacing the pre-filter housings.
1. Follow procedure for RELEASING WATER
PRESSURE.
2. Place a pan under pre-filter housing being
removed to catch water overflow.
3. Remove pre-filter housing from pre-filter head.
4. Remove the old cartridge and wipe out inside of
pre-filter housing.
5. Install a new cartridge into the pre-filter housing.
NOTE: Ensure new cartridges are positioned in the
correct order; carbon block-SS filter on the right,
carbon block filter in the middle and 5 micron
sediment filter on the left side.
6. Inspect filter housing O-rings. Replace O-ring if
damaged.
7. Reinstall pre-filter housing onto the pre-filter
head. Hand tighten. Use the wrench only to
remove pre-filter housings - DO NOT OVER
TIGHTEN.
8. Perform RESTARTING THE SYSTEM.
RO MEMBRANE REPLACEMENT
1. Follow procedure for RELEASING WATER
PRESSURE.
2. Disconnect the 1/4" line from the elbow fitting on
the inlet side of the membrane housing.
NOTE: The housing can be lifted away from the
mounting clips in order to get a firm grasp on the
housing and cap.
3. Unscrew the membrane housing cap.
4. Remove the used RO membrane from the
housing by threading a plastic tie through the
hole on top of the membrane post and pulling it
out.
CAUTION: Do not touch the new RO membrane.
5. Cut the bottom of the plastic bag containing the
RO membrane and insert membrane by
pushing it into the housing until it stops. Handle
the membrane only by the plastic bag.
6. Insert the new RO membrane into the housing.
7. Replace the membrane cap and reconnect the
1/4" tubing to the inlet fitting.
8. Perform RESTARTING THE SYSTEM.
POST NEUTRALIZING FILTER REPLACEMENT
1. Follow procedure for RELEASING WATER
PRESSURE.
2. Loosen both Jaco nuts on the inlet and outlet of
the post filter.
3. Pull away nuts and tubing from post filter.
4. Remove used post filter by pulling it out of the
mounting clips.
5. Snap in new post filter and reconnect inlet and
outlet tubing.
6. Perform RESTARTING THE SYSTEM.