troubleShootIng guIde
Problem
Possible cause
remedy
Insufficient product water
1.
during normal operating
periods.
a. Pre-filter cartridge plugged.
Replace pre-filter cartridge.
a.
TO cartridge plugged.
b.
Replace TO cartridge.
b.
RO cartridge plugged.
c.
Replace RO cartridge.
c.
Insufficient system inlet pressure.
d.
Check/repair booster pump and inlet line.
d.
e. Incorrect storage tank pre-charge.
e. Empty water in storage tank. Check pre-charge
pressure. Adjust to 5-10 psi (typical). Presence
of water at Schrader valve indicates failed
bladder - Replace bladder or tank.
Insufficient product water
2.
volume during peak periods.
Refer to problem 1.
a.
Refer to problem 1.
a.
System rated output low for application.
b.
Verify system output. If output is within
b.
specification, increase output if applicable.
System storage capacity low.
c.
Increase storage capacity if applicable.
c.
Low quality RO water.
3.
Refer to problem 1.
a.
Refer to problem 1.
a.
RO cartridge failure.
b.
Replace RO cartridge.
b.
Low water pressure at water
4.
using equipment.
Tubing/piping run to equipment restrictive.
a.
Increase tubing/piping diameter. Refer
a.
to "System Installation" section for
recommendations.
Incorrect storage tank pre-charge.
b.
Empty water in storage tank. Check pre-charge
b.
pressure. Adjust to 5-10 psi (typical). Presence
of water at Schrader valve indicates failed
bladder - Replace bladder or tank.
Objectionable product water
5.
odor.
TO cartridge exhausted.
a.
Replace TO cartridge.
a.
Storage Tank requires disinfection.
b.
Disinfect storage tank.
b.
Wastewater flow too low or
6.
decreases over time.
Drain line restricted.
a.
Check/correct any restrictions in drain line
a.
tubing. Make sure to allow an air gap at the
drain. Disconnect reject line at quick connect
fitting and inspect for obstruction or damage.
Remove obstruction. Replace if required.
Insufficient system inlet pressure.
b.
Check/repair booster pump and inlet line.
b.
7
rePlaceMent cartrIdgeS (See next page for diagram)
key Part no.
deScrIPtIon
N/A
EV9109-08
P5 Pre-Filter (not pictured here)
26
EV9607-41
EV9627-04
6TO-BW Cartridge
7TO-BW Cartridge
27
EV9627-11
EV9627-03
EV9627-07
MR-100 Cartridge
MR-255 Cartridge
MR-350 Cartridge
key Part no.
deScrIPtIon
28
EV9627-05
EV9668-24
7CC-BW Cartridge
BW 4400
3123-42b IO Guide MRS - 112108.indd 7
9/11/09 11:15:30 AM
