STATIM 7000 Service Manual – Conductivity Calibration
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26. Conductivity Circuit Calibration Instructions
Statim 7000 equipped with PCB rev 7.x requires Conductivity Circuit Calibration
1. Turn the unit off.
2. Disconnect conductivity sensors wires
3. Using a wire, make a short on the FLOAT pins (J4-5 and J4-6)
4. Enter Service Mode by powering the unit up while holding Unwrapped and Wrapped
button pressed. This
Service Mode
is password protected, enter password to continue
(default password is: Unwrapped, Wrapped, R&P and Stop keys pressed in this order).
The service technician can change this password. In case the changed password is lost
a backdoor password can be used: Unwrapped, Wrapped, Unwrapped, Wrapped in this
order.
5. Use Unwrapped Key to select next item in the menu or Wrapped Key to select previous
item in the menu until Conductivity Setup is displayed.
6. Press Rubber and Plastic Key to enter Conductivity Setup selection.
Screen at this time
:
CND=xx.xuS/NNN/y.yppm
L=LL.L H=HH.H G=G.GG
Where:
xx.x
water conductivity in
µ
S
NNN
conductivity measurement in ADC (Analog to Digital) counts (0…255)
y.y
water quality in ppm (parts per million)
HH.H
High value threshold (“Bad Water” limit), default 10
µ
S. Readings larger
than this trigger “Bad Water Quality” error.
LL.L
Low value threshold in
µ
S, default 0.3
µ
S. Do not adjust this value in
Statim 7000 because this value is
not
used for triggering the “No Water,
Refill reservoir” message. There is a float sensor for that.
G.GG
Water conductivity circuit Gain. Default 1.00
Note: Water produced by a good
SciCan Water Filter Cartridge
or distilled water
readings should be below the High threshold.
7. Check/adjust the High threshold value to the default one. Do not touch the Low value
threshold even though it is possible to adjust.
8. By pressing the Rubber and Plastic Key the selection moves between LO, HI and G