Lancaster 7-LXC-50 Installation, Operating And Service Manual page 26

Problem
8. Hard or untreated water is being delivered
9. Control valve uses too much regenerant
10. Residual regenerant being delivered to
service
11. Excessive water in regenerant tank
12. Control valve fails to draw in regenerant
13. Water running to drain
Possible Cause
a. Bypass valve is open or faulty
b. Media is exhausted due to high water
usage
c. Meter not registering
d. Water quality fluctuation
e. No regenerant or low level of regenerant
in regenerant tank
f. Control fails to draw in regenerant
g. Insufficient regenerant level in regenerant
tank
h. Damaged seal/stack assembly
i. Control valve body type and piston type
mix matched
j. Fouled media bed
a. Improper refill setting
b. Improper program settings
c. Control valve regenerates frequently
a. Low incoming water pressure
b. Incorrect injector size
c. Restricted drain line
a. Improper program settings
b. Plugged injector
c. Drive cap assembly not tightened in
properly
d. Damaged seal/ stack assembly
e. Restricted or kinked drain line
f. Plugged backwash flow controller
g. Missing refill flow controller
a. Injector is plugged
b. Faulty regenerant piston
c. Regenerant line connection leak
d. Drain line restriction or debris cause
excess back pressure
e. Drain line too long or too high
f. Low incoming water pressure
a. Power outage during regeneration
b. Damaged seal/ stack assembly
c. Piston assembly failure
d. Drive cap assembly not tightened in
properly
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Solution
a. Fully close bypass valve or replace
b. Check program settings or diagnostics
for abnormal water usage
c. Remove meter and check for rotation or
foreign material
d. Test water and adjust program values
accordingly
e. Add proper regenerant to tank
f. Refer to Trouble Shooting Guide number
12
g. Check refill setting in programming.
Check refill flow control for restrictions
or debris and clean or replace
h. Replace seal/stack assembly
i. Verify proper control valve body type
and piston type match
j. Replace media bed
a. Check refill setting
b. Check program setting to make sure
they are specific to the water quality
and application needs
c. Check for leaking fixtures that may
be exhausting capacity or system is
undersized
a. Check pressure – must remain at
minimum of 20 psi. If possible,
increase pump switch cut-in to 25 psi.
b. Replace injector with correct size for the
application
c. Check drain line for restrictions or
debris and clean
a. Check refill setting
b. Remove injector and clean or replace
c. Re-tighten the drive cap assembly
d. Replace seal/ stack
e. Check drain line for restrictions or
debris and or un-kink drain line
f. Remove backwash flow controller and
clean or replace
g. Replace refill flow controller
a. Remove injector and clean or replace
b. Replace regenerant piston
c. Inspect regenerant line for air leak
d. Inspect drain line and clean to correct
restriction
e. Shorten length and or height
f. Check pressure – must remain at
minimum of 20 psi. If possible,
increase pump switch cut-in to 25 psi.
a. Upon power being restored control
will finish the remaining regeneration
time. Reset time of day
b. Replace seal/ stack assembly
c. Replace piston assembly
d. Re-tighten the drive cap assembly