Mokon Duratherm, Инструкция по эксплуатации

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Section 7 – Troubleshooting Guide
Problem Possible Cause Corrective Measure
System will not start
System unplugged / power
off Plug system in / turn power
on
Low pressure on supply side
(water off)
Turn water on
Improper power source
wiring Check wiring (electrical
schematics) and correct
Blown fuse at power supply
Isolate open fuse and
replace
Blown control circuit fuse
Replace and check for
ground condition
Blown motor branch circuit
fusing Check fuse and replace.
Check for ground condition
Low voltage
Measure incoming voltage,
if too low correct
Overload on pump/motor
starter
Consult factory
Circulating pump shut down
during operation
Overload on pump/motor
starter
Consult factory
Safety shut down Consult factory
Open winding in pump
motor
Check motor windings with
an OHM meter, if open
reading, replace motor
Refer to possible causes and corrective measures for
Problem #1
Discharge pressure will not
build up
Incorrect pump rotation
See Section 3.1 to check
and correct pump rotation
Entrapped air Press purge button
Pressure gauges Inspect/replace instruments
Pressure gauges erratic and
system will not hold
temperature Entrapped air Press purge button
Cooling solenoid valve or
pressure regulator See Maintenance Section
4.3 to clean valve(s)
High pressure and erratic
temperature
Plugged flow paths,
inadequate circulation
through process and
connecting lines
Inspect; if plugged,
dislodge
Loss of pressure and
volume output
Cooling solenoid valve or
pressure regulator See Maintenance Section
4.3 to clean valve(s)
Leak in “To Process” line Repair leak