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PROBLEM
Excessive pressure drop
through filter
Contaminant not being
properly removed
Neutralizer media raises
pH too high
Neutralizer media fails to
raise pH sufficiently
Birm Filter fails to remove
iron
Troubleshooting
CAUSES
A) Filter not
backwashing
B) Filter not
backwashing
frequently enough
for water condition
C) Filter bed loaded
with sand
D) "Cementing" or
"Channeling"
E) Drain Line restricted
F) Top Screen Fouled
G) Control Valve
plugged with debris
A) Leaking bypass
valve
B) Internal valve leak
C) Distributor tube not
seated properly in
control valve
D) Water usage flow
rate exceeds filter
specifications
A) Filter is brand new
B) Wrong media used
A) Water usage flow
rate is too high to
provide adequate
contact time
B) Media bed is
"Cemented" or
"Channeled"
A) pH too low
B) Dissolved oxygen
level too low
13
SOLUTIONS
1) Check if display is blank, see "Blank
Display" section of Page 14.
2) Check if display has an error
message, see "Error Code" section of
Page 15.
3) Verify drive motor is connected to
circuit board connector J1 (labeled
"MOTOR") and is not faulty
4) Ensure uninterrupted power supply
5) Increase Backwash frequency
6) Verify sediment being removed is less
dense than the filter media and install
a "Spin-Down" type sediment filter
ahead of the IBW/IMBW to remove
well sand
7) Verify adequate pumping rate for
backwash
8) Probe media bed to check for
"Cementing"
9) Check drain line for restriction: frozen,
plugged, kinked, exceeds 15',
overhead installation, flexible drain
line, drain line diameter too small
10) Clean top screen
11) Disassemble and clean control valve
1) Verify bypass valve is in service
position
2) Replace piston and seal assemblies
3) Verify distributor tube seated securely
in control valve body
4) Verify actual water usage flow rates
against system specifications
5) Increase length of backwash and rinse
cycles
1) Turn bypass valve very slightly to the
"Bypass" position allowing a small
amount of untreated water to bleed
into the treated water (only if iron < 0.3
ppm, otherwise staining will occur)
2) Rebed the unit with a less aggressive
media
1) Verify actual water usage flow rates
against system specifications
2) Verify adequate pumping rate for
backwash
3) Check drain line for restriction: frozen,
plugged, kinked, exceeds 15',
overhead installation, flexible drain
line, drain line diameter too small
1) pH of untreated water must be 6.8 or
higher – adjust with proper equipment
such as soda ash injection system
2) Aerator may be installed prior to the
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