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IONPURE
®
VNX50HH-2 CEDI Modules
Page 16
IP-MAN-VNX50HH2
4. DETERMINE OPERATING DC CURRENT PRIOR TO STARTUP
The VNX50HH-2 modules are designed and tested to operate correctly at 8 amps. If the feed water
meets the influent quality requirements for the VNX50HH-2, the current will be set independent of the
Feed Water Conductivity (FCE).
Set the power supply to operate in constant amperage mode and set the
amperage at 8 Amps DC.
Note – This procedure is different from our typical startup amperage calculation that would be calculated
based on the Feed Water Conductivity Equivalent (FCE).
5. START-UP PROCEDURE
5.1. Test interlocks
•
Test flow switches and other interlocks, including the RO interlock if applicable
•
Test pressure relief if applicable
•
Set alarm points
5.2. Notes on Recovery, Silica and Hardness
VNX50HH-2
•
VNX recovery of 90% is limited to systems with feed water total hardness of less than 1 ppm
as CaCO
3
. For systems operating with CEDI feed water hardness from 1 – 2 ppm as CaCO
3
the maximum water recovery is limited to 80%. In addition there is a minimum reject flow of
2.6 gpm per VNX modules.
•
For normal recovery of 80-90%, feed water silica must be
≤
1 ppm as SiO
2
Table 5-1:
Flow Range
Hardness
(as CaCO
3
)
Recovery
Flow
Range
Dilute Feed
Gpm [m
3
/hr]
Concentrate
feed from
Dilute (CEDI
Product)
Gpm [m
3
/hr]
Net Product
Gpm [m
3
/hr]
Minimum 25 [5.68]
5 [1.14]
20 [4.54]
Nominal 50 [11.36]
10 [2.27]
40 [9.08]
1-2 ppm
80%
Maximum 62.5 [14.2] 12.5 [2.84]
50 [11.36]
Minimum 25 [5.68]
2.6 [0.59]
22.4 [5.09]
Nominal 50 [11.36]
5 [1.14]
45 [10.22]
<1 ppm
90%
Maximum 62.5
[14.2]
6.2 [1.41]
56.3 [12.79]
Содержание IONPURE VNX50HH-2
Страница 40: ...IONPURE VNX50HH 2 CEDI Modules Page 40 IP MAN VNX50HH2 APPENDIX B VNX50HH LAYOUT ELEVATION DRAWING B 1 ...
Страница 41: ...IONPURE VNX50HH 2 CEDI Modules Page 41 IP MAN VNX50HH2 APPENDIX B VNX50 HH PID DRAWING B 2 ...
Страница 42: ...IONPURE VNX50HH 2 CEDI Modules Page 42 IP MAN VNX50HH2 APPENDIX B VNX50 HH ELECTRICAL CONNECTIONS DRAWING B 3 ...
Страница 46: ...IONPURE VNX50HH 2 CEDI Modules Page 46 IP MAN VNX50HH2 APPENDIX C VNX50 HH PP PLUG DRAWING C 4 ...