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Are any
DC wires
loose?
No
Feed
water temp
drop?
No
Excess
hardness in
CEDI reject?
No
Excess
silica in
CEDI reject?
No
Does NaCl/NaOH
cleaning help?
No
Call you local service
provider
Page 33
VNX50HH-2 CEDI Modules
Troubleshooting Flow Chart - Increase in DC Volts
Page 1 of 1
Yes
Yes
Yes
Yes
Yes
Tighten connections
Increase in DC voltage
is normal
Acid clean,
reduce CEDI feed
hardness and/or
lower CEDI recovery
Caustic clean,
reduce CEDI feed
silica and/or
lower CEDI recovery
Cleaning removed
organics from resin:
review process design
and operation
IP-MAN-VNX50HH2
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Table of Contents
Troubleshooting
