Labconco WaterPr PS Systems 90007 Series - Manuel (Page 24)

Chapter 4: Using Your WaterPro PS System
20
Original Instructions
Display
1
2
3
4
Figure 5
1. ON/OFF Switch. This switch starts the recirculation and lights the display. When the switch is
in the OFF position the pump will automatically start and recirculate four minutes every two
hours to prevent the system’s water quality from degrading. Before automatic recirculation
occurs the switch must be in the OFF position for a full two hours.
2. Mode. This key selects the mode of operation as indicated by the illuminated LED. Digital
display indicates value as each mode is selected.
a. MegOhm. This is the normal operating mode and displays the water purity
measured in resistivity.
b. Temp. Displays temperature of the water in degrees Centigrade.
c. Time Dispense. Displays amount of time in minutes the system will dispense water
from the dispense valve. Time can be increased or decreased using arrow keys.
3. Set Pt. To display minimum desired resistivity setting (up to 16 MegOhm). Display will flash
if water resistivity drops below set point. Set point can be increased or decreased using arrow
keys.
4. Dispense. Pressing this key delivers water from the dispense valve. The key must be held
down to continue dispensing. The delivery will be time controlled if that mode has been
selected, and value entered into the display. Relieve pressure in Ultrafiltered models by first
turning OFF the display with the ON/OFF switch and pressing the dispense key until pressure
in system has been relieved.