Watts Pure Water PWR4021 Series, Installation, Operation And Maintenance Manual

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ORDERING CODE # DESCRIPTION
68107603 Pre-Filter housing 20" Full Flow
68107310 RO Membrane Pressure Vessels 4" x 40" FRP
68107309 RO Membrane Pressure Vessel 4" x 40" FRP (bottom)
7300452 Pressure Gauge, 2", 0 - 100psi, Dry
68107029 Pressure Gauge, 2.5", 0 - 400psi, LF
7300464 Flow Meter 1 - 10 gpm (product)
7300468 Flow Meter 1 - 10 gpm (reject)
7300924 Motor Starter Contactor, 16 amps, 24 volt coil
7300925 Overload Relay 3.2 - 16 amps
68107195 Pump and Motor BVMI 3-21 5 HP, 3-Phase
7300444 Low-Pressure Switch, 4psi for package II Controller
7300390 Inlet Solenoid Valve, 1", 24 volt coil
7300817 Watts 4" x 40" RO Membranes
7300923 Package II Controller ROC-4
68106950 Conductivity Probe
7300446 Autoflush Solenoid Valve, 1/2", Brass, 24 volt coil
V. Membrane Replacement
1. Turn off the system and close the feed water shutoff valve.
2. Disconnect the membrane feed hoses by loosing the brass
fittings between the end of the hoses and the pressure vessel
end caps.
3. Remove the retaining plates the pressure vessel end caps.
4. Push the old membrane out of the vessel in the direction of the
feed flow. (See flow arrows on the right side of figure #1)
5. Record the serial numbers of the new membranes.
6. Lightly lubricate the brine seals on the new membranes with
clean water.
7. Install the new membranes in the direction of flow with the brine
seal end going in last.
8. Lightly lubricate the end cap internal and external o-rings
with glycerin.
9. Install the end caps and secure them with the retaining plates.
10. Install the membrane feed hoses.
11. Verify that all retaining plates are installed.
12. Follow the startup procedure in section III-D.
Brine
Seal
Flow Direction
Membrane