Watts R48-20-3131100 - Manual (Page 16)

IV. REPLACEMENT PARTS LIST
Part Number Description Quantity per
System
S25FVS720 Pre filter housing 7 round 40" 1
R24449 Pressure Gauge, 2 1/2", 0-100 psi, LF, Back Mount 2
R2452P Pressure Gauge, 2 1/2", 0-400 psi, LF, Back Mount 3
R5411 Flow Meter 15-130 gpm (product) 1
R5409 Flow Meter 10-80 gpm (reject) 1
R5398 Flow Meter 4 – 40 gpm (reject recycle) 1
R23-2000 Controller with conductivity meter (optional) 1
R6316-V70B10S3T Pump & Motor, 3-Phase, 60Hz, 20 hp 1
R2316-214B Low Pressure Switch 1
R6154-3IV-24 Inlet Solenoid Valve 24 volt 1
R9642-TM370 RO Membranes 16
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 rings from the pressure vessels.
4. Push the old membrane out of the vessel in the direction of the feed flow.
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.
Note: Be sure to install an interconnector between the membranes in each
pressure vessel.
8. Lightly lubricate the end cap internal and external o-rings with glycerin.
9. Install the end caps and secure them with the retaining rings.
10. Install the membrane feed hoses.
11. Verify that all retaining rings are installed.
12. Follow the start up procedure in section III-D.
Flow Direction
Membrane Brine Seal