GE Homespring Operation Manual page 20

6
Ensure that the inlet valve is still in the closed position.
Once a PASS green LED is achieved, close all mini ball valves
and remove both 1/4" tubings from the mini ball valves. Open
the outlet valve and turn on a tap downstream of the system
to relieve the air pressure inside the system. Turn off the tap
once water stops coming out.
Insert plugs back into the inlet and outlet mini ball valves.
Once the system has been depressurized, remove the system
cap. Using the controller, perform a manual flush to drain
the prefilter cavity so that the spigot at the bottom can be
observed. Refer to the instructions in the Controller Functions
section on how to perform a manual flush sequence.
To Release Pressure:
This procedure is to be used if the following message is
encountered when commissioning the system: "System
Pressure High, Release Pressure".
This step is to be completed after the system is depressurized
and before the integrity test is done a second time, between
steps 1 and 2 in the integrity test step.
A. Close the outlet JG valve.
B. Disconnect the hose from the integrity tester.
C. Point the hose towards a drain or empty bucket and open
the outlet JG valve.
D. Keep the valve open until all the air has left the unit, a
steady slow stream of water should be flowing out of the
hose.
e. Close the JG valve.
f. Re-attach the hose to the integrity tester and restart the
integrity test.
7
Remove the system cap using the cap wrench. Insert the
clean internal prefilter into the system prefilter cavity. Push
down gently to ensure it is seated properly.
20
Inspect and clean
thimble filter as needed.
Figure 29
8
Replace the system cap and open the inlet valve. Turn on
a cold water tap to remove any remaining air and residual
chlorine from the system and plumbing. Once the remaining
air is released, leave the tap on for the rest of this procedure.
Transmembrane Pressure (TMP) Test
WARNING:
pressure loss through the system. This includes the
internal prefilter, the thimble filter and the membranes.
Be sure the internal prefilters and the thimble filter are
clean so that you will get a true representation of the
TMP of the membranes.
The TMP test measures the pressure drop across the
membrane. This is the pressure change that the homeowner
will observe as a result of the filtering process. The TMP is
tracked during the life of the system and is used to determine
the condition of the system membrane. As the membrane
fouls, the TMP will increase.
1
Insert a pressure gauge into each of the inlet and outlet
mini ball valves and open the valves.
figure 30
2
With a nearby tap running with a high flow rate, read the
two pressure gauges and subtract the outlet pressure from
the inlet pressure. The resulting value is the TMP. Record the
value on the service tag.
When a pump/pressure tank is in use, use the following inlet
pressures to determine TMP:
Set Points (psi)
20/40
30/50
40/60
X/Y
TMP is an indicator of
Inlet Pressure (Psi)
35
45
55
y-5