Instruction manual

5-10 Type II Water System Thermo Scientific
Section 5
Maintenance and Servicing
System Alarms and
Errors (continued)
Message Possible Causes Action
Purity Meter Error Control board out of tolerance. Replace control board (PC1403X3).
Meter Check Failed
Meter on control board out of
calibration.
Calibrate meter using NIST module.
Meter on control board out of
tolerance.
Replace control board (PC1403X3).
Follow the enclosed calibration
instructions.
DI Temp Error
Resistivity cell not connected
to board.
Check resistivity cell lead connection
on board.
Resistivity cell temperature
sensor out of tolerance.
Replace resistivity cell (E1403X6).
Reservoir water temperature
outside of allowable range.
Check the temperature of the storage
reservoir water.
Control board out of tolerance. Replace control board (PC1403X3).
Check cell tolerance
Ensure that reading on tag agrees
with reading in software.
Low DI
Cartridge pack near exhaus-
tion.
Install a new cartridge pack (D502137)
and reset timer.
Cartridge pack not in place
(sanitization block installed?).
Check that cartridge pack is installed.
DI cell out of tolerance. Replace resistivity cell (E1403X6).
DI meter on control board out
of tolerance.
Replace control board (PC1403X3).
Check cell tolerance
Ensure that reading on tag agrees
with reading in software.
DI Over-range Air in system.
Allow system to recirculate to purge
air and look for possible suction leak.
Resistivity cell not connected
to control board.
Check resistivity cell lead connections
on control board.
Resistivity cell out of
tolerance.
Replace resistivity cell (E1403X6).
Check cell tolerance
Ensure that reading on tag agrees
with reading in software.