Runxin N74A3 User Manual

MODEL: N74A1-63510/N74A3-63610/N74B1-63510B/N74B3-63610B
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drain line.
C. drainage discharge too
big when in backwash
process.
C. Check for proper drain rate.
9. Control
cycle
continuously.
A. Locating signal writing
breakdown.
B. Controller is faulty.
C. Foreign material stuck
the driving gear.
D. Time of regeneration
steps were set to zero.
A. Check and connect locating
signal wiring.
B. Replace controller.
C. Take out foreign material.
D. Check program setting and
reset.
10. Drain
flows
continuously.
A. Internal valve leak.
B. When electricity fails to
supply, valve stops
backwash or rapid rinse
position.
A. Check and repair valve body or
replace it.
B. Adjust valve to service position
or turn off bypass valve and restart
when electricity supply.
11.Interrupted
or irregular
brine.
A. Water pressure too low
or not stable.
B. Injector is plugged or
faulty.
C. Air in resin tank.
D. Floccules in resin tank
during backwash.
A. Increase water pressure.
B. Clean or replace injector.
C. Check and find the reason.
D. Clean the floccules in resin
tank.
12. Water
flow out from
drain or brine
pipe after
regeneration.
A. Foreign material in valve
which makes valve can’t be
closed completely.
B. Hard water mixed in
valve body.
C. Water pressure is too
high which result in valve
doesn’t get the right
position.
D. Under the Backwash
position, the outlet line and
brine line are connected.
A. Clean foreign material in valve
body.
B. Change valve core or sealing
ring.
C. Reduce water pressure or use
pressure release function.
D. Install a check valve, solenoid
valve in front of the outlet or install
a liquid level controller in the brine
tank.

Runxin N74A3 Specifications

General

Brand	Runxin
Model	N74A3
Category	Control Unit
Language	English