Iv. replacement parts list, V. membrane replacement, Vi. appendix – Watts PWR2511 User Manual
Page 7: Temperature correction factors
7
item NumbeR
DescRiPtioN
1
Pre filter housing 10"
2
RO membrane pressure vessel 2
1
⁄
2
" x 14" SS
3
RO membrane pressure vessel 2
1
⁄
2
" x 21" SS
4
RO membrane pressure vessel 2
1
⁄
2
" x 40" SS
5
Pressure gauge, 2", 0-100psi, dry, bottom mount
6
Pressure gauge, 2", 0-100psi, dry, back mount
7
Pressure gauge, 2
1
⁄
2
", 0-400psi, LF
8
Flow meter 0.1 – 1.0 gpm
9
Flow meter 0.2 – 2.0 gpm
10
Product pressure switch
11
Product pressure switch with auto / off lever
12
Motor 0.5 HP single phase 120 volt
13
Pump 140 GPH carbonator with relief valve
14
Low-pressure controller
15
Low-pressure switch, ¼" MPT, 3 – 40psi
16
Reject & recycle brass needle valve
17
Inlet solenoid valve,
1
⁄
2
", 120 volt coil
18
2
1
⁄
2
" x 14" RO membrane
19
2
1
⁄
2
" x 21" RO membrane
20
2
1
⁄
2
" x 40" RO membrane
21
Prefilter cartridge, 10", 5 micron
22
Product check valve, SS
IV. Replacement Parts List
A list of common replacement parts is provided below. Contact your
dealer for replacement parts assistance.
V. Membrane Replacement
1. Turn off the system and close the feed water shutoff valve.
2. Disconnect the tubing from the pressure vessel.
3. Remove the retaining "U" pins 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.
8. Lightly lubricate the end cap internal and external O-rings with
glycerin.
9. Install the end caps and secure them with the "U" pins.
10. Reconnect the tubing to the pressure vessel.
11. Verify that all retaining "U" pins are installed.
12. Follow the start up procedure in section III-D.
Brine
Seal
Flow Direction
Membrane
°c
°F
coRRectioN FactoR
30
86
1.16
29
84.2
1.13
28
82.4
1.09
27
80.6
1.06
26
78.8
1.03
25
77
1.00
24
75.2
0.97
23
73.4
0.94
22
71.6
0.92
21
69.8
0.89
20
68
0.86
19
66.2
0.84
18
64.4
0.81
17
62.6
0.79
16
60.8
0.77
15
59
0.74
14
57.2
0.72
13
55.4
0.70
12
53.6
0.68
11
51.8
0.66
10
50
0.64
9
48.2
0.62
8
46.4
0.61
7
44.6
0.59
6
42.8
0.57
5
41
0.55
Multiply the nominal product flow at 25° C by the temperature correction factor to
determine the flow at various other temperatures.
VI. Appendix
The following tables are intended as a guide to determining the flow
rates for the PWR2511 series RO systems. All flows are in gallons
per minute (GPM).
Nominal flows for systems operating at 50% recovery.
Model nuMber
PWR25111011
PWR25112011
PWR25113011
PWR25113021
Product
0.10
0.17
0.41
0.83
reject
0.10
0.17
0.41
0.83
Temperature Correction Factors