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Problem
Possible Cause
Corrective Measure
Temperature climbs beyond
setpoint
Heater contactor
Inspect/replace component
Temperature controller
See Controller Section 5
Thermocouple or RTD
Inspect/replace component
Controller calibration
See Controller Section 5
System does not reach
and/or hold temperature
System at end of long
feeder line
Install another supply
source line
Cooling solenoid valve or
pressure regulator
See Maintenance Section(s)
4.3 and/or 6.1 to clean or
replace valve(s)
Heater burn out
Inspect/replace component
Heater contactor
Inspect/replace component
Lime deposits
Clean system (consult
factory for
recommendations)
Temperature controller
See Controller Section 5
Kilowatt capacity
inadequate
Consult Mokon engineering
Loose electrical connections Tighten connection or
replace broken wires
Thermocouple or RTD
Inspect/replace component
Controller calibration
See Controller Section 5
Variance in temperature
readings
Plugged flow paths,
inadequate circulation
through process and
connecting lines
Inspect; if plugged,
dislodge
Lime deposits
Clean system (consults
factory for
recommendations)
Kilowatt capacity
inadequate
Consult Mokon engineering
Thermometers
Inspect/replace component
Leaking water around the
motor shaft
Pump seal
See Maintenance Section
4.2 to replace pump seal
Slow response after
changing temperature
setting
Heater burn out
Inspect/replace component
Heater contactor
Inspect/replace component
Lime deposits
Clean system (consult
factory for
recommendations)
Kilowatt capacity
inadequate
Consult Mokon engineering
Cooling solenoid valve or
pressure regulator
See Maintenance Section(s)
4.3 and/or 6.1 to clean or
replace valve(s)
Thermocouple or RTD
Inspect/replace component
