Labconco WaterPr BT Systems 90151 Series - Manual (Page 69)

Troubleshooting
61
Problem Possible causes What to do
The Display screen is blank. • The power cord is not plugged in.
• No source of electrical power.
• Main Power Fuse is blown.
• Check that the power cord is
plugged in.
• Check the source of electrical
power.
• Contact your technical support.
In FILLING TANK mode, the
Tank Level display is not
rising.
(The Tank Level display
should be rising steadily.)
• The Tank Outlet Valve is open. The
water in the tank is diverted into the
drain. No water is kept in the tank.
• The tank level is not calibrated
properly.
• The RO membrane is dirty or
clogged.
• Close the Tank Outlet Valve.
• Check the Feedwater source.
• See Section How to Calibrate the
Tank Level (C04).
• Replace the Filter Pack cartridge.
Low water flow or no water
flow when the Dispensing
Button is pressed. • The water level is less than 10%.
No dispensing is allowed.
• The Tank Outlet Valve is open. The
tank is not filling up with water.
• .22 um Filter is air locked.
• Final Filter is clogged.
• Allow the system to go into
FILLING TANK mode until there is
enough water available in the tank,
viewed by the Tank Level display.
• Close the Tank Outlet Valve.
• Vent all air from the .22um Filter.
• Replace the Final Filter, see Section
How to Replace the Final Filter.
DISPENSING mode
continuously runs even
when the Tank Level display
is below 10%.
• The water level is not calibrated.
The system does not detect the
minimum level to disable
DISPENSING mode.
• Calibrate the tank level. See
Section How to Calibrate the Tank
Level (C04).
AUTO-DISPENSING mode is
not accurate. • The Product Water flowrate is not
calibrated.
• The Final Filter is clogged or
airlocked.
• Calibrate the Product Water
flowrate. See Section How to
Calibrate the Flowrate from the
WaterPro® BT System (F02) .
• Replace the Final Filter.
The last RO Permeate
conductivity value is not
displayed when you press
the “+” button. • The measurement was not made
while dispensing water during
FILLING TANK mode.
• The value is out of measurement
range.
• Dispense water during FILLING
TANK mode to start a RO Permeate
conductivity reading again.