APOLLO DISC-KLEEN FILTER OPERATIONS, MAINTENANCE AND TROUBLESHOOTING GUIDE
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9
BACKFLUSH CONTROLLER INSTALLATION:
• Refer to the controller’s handbook for installation instructions.
• Make sure that the voltage of both the solenoid unit and controller are correct.
• Set the backflush controller switch to “RUN”.
• Check that the PD hydraulic switch HIGH and LOW pressure lines are correctly connected to the appropriate
ports. The high pressure sensing port is found on the last backflush valve. The low pressure sensing port is found
on the downstream outlet manifold.
• Set the starting backflush point on the PD switch to: 5 psi differential when flushing at 30 psi
7 psi differential when flushing at 40 psi or greater
• Set the controller to a flush time of 20 seconds and a dwell time of 10 seconds. These settings may require
adjustment to conform to local water conditions. Typically, a 2 to 4 hour interval between backflushes is
recommended.
Backflush Controller
Flushing Time
Between Flushing
Dwell
Vent.
Vent.
Vent.
1
2
3
Time or ∆ P
1
2
Time or ∆ P
Drain
Drain
Drain
Command
Water Filter
HP
IN
LP
OUT
So
l
e
noi
d 12
VDC
L
In
Com.
S
o
l
e
no
id 24
VAC
o
r 1
2V
D
C
Vent
In
Out
4
” T
win
A
poll
o
Fil
t
er
LP
HP
M
ur
p
hy ∆
P Swit
ch
Vent
Feed
Command
Water
Command
to Valve
A
c
ce
ler
a
to
r
R
elay
Command
from Solenoid
In
Out
4”
B
ackflush
V
al
ve
Drain
Pressure
Comm
Vent
INSTALLATION
NOTE: Refer to Netafim USA’s YouTube Channel
for Backflush Controller Installation Video
