GE E4H Series Operation And Maintenance Manual page 27

Symptom (Alarm)
Switch on, unit not
operating
Electrical machine
shutdown
Conductivity
Calibration Error
message: "Sensor
Reading Higher Than
Expected"
Conductivity
Calibration Error
message: "Sensor
Reading Lower Than
Expected"
E4H Series
Operation & Maintenance Manual
TROUBLESHOOTING GUIDE
Possible Cause
Pressurized storage
switch or float switch
has cut power to the
machine
External control or
permeate purge
control contacts have
shut down the
machine.
Thermal overload in
motor has tripped.
No power to machine.
Motor and/or pump
not operating properly.
Alarm condition has
turned off machine.
Alarm condition has
turned off machine.
External control or
permeate purge
control contacts have
shut down the
machine.
Motor starter
overloaded, heater
tripped.
The monitor is being
told the conductivity is
50% more than it
thinks it is by default.
The monitor is being
told the conductivity is
50% less than it thinks
it is by default.
Remedies
Check the permeate backpressure
or position of float in the storage
tank.
Check for proper operation of
control contacts. Restart machine
manually or wait for automatic
start-up.
Allow the machine to cool; check the
feed water supply and/or amp draw
of the motor.
Check the fuses or circuit breakers;
measure the voltage.
See the pump instructions. Contact
GE for repair of replacement.
Check for minimum inlet pressure
and push alarm reset switch.
Restart the machine by pushing the
alarm bypass. Check all possible
alarm conditions; inlet pressure and
push alarm reset switch.
Check for proper operation of
control contacts. Restart machine
manually or wait for automatic
start-up.
Turn the switch off; let the heater(s)
cool.
Is the monitor being calibrated to DS
when configured for conductivity?
Verify that the sensor tip has no
accumulated solids and has not
bridged the piping (creating a short).
Clean tip.
Is the sensor fouled? Are all valves
open? Clean or replace sensor.
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