Munters R Series, Руководство по эксплуатации и техническому обслуживанию

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Manual# I27028 7-2 Rev. 2 – 11/22/2017
7.1 TROUBLESHOOTING GUIDE
Problem Possible Cause Recommended Remedy
Power turned on, unit
does not run, and no
indicator lights
No power to the unit or
loss of one phase of
power.
Check power to the unit.
Failed fuses
Determine which fuse failed and why.
Replace fuses if necessary.
Power turned on, unit
does not run, and
indicator lights on
Phases of supply power
are out of sequence. Check three phase power monitor and switch
two of the incoming phases if necessary.
Unit runs in Manual
position but does not
run in Auto.
Humidistat (option) failed.
Check humidistat wiring, replace humidistat if
necessary.
Humidistat setpoint is
higher than measured
value.
Reduce humidistat setpoint.
Humidity is high,
dehumidifier
performance is poor.
Controlled space is not
completely sealed.
Seal all ductwork.
Make process space vapor-tight.
Unit is not operating at
design conditions.
Consult flow diagram for correct pressure
drops across wheel. See “Maintenance”
Reduce moisture load or temperature to
dehumidifier in order to operate at design
conditions.
Check for leakage in air handler outside of
dehumidifier.
Wheel is clogged.
Monitor wheel pressure drop for multiple
revolutions, looking for changes in pressure
drop readings.
Visually inspect wheel. See “Maintenance”
Wheel is not rotating at
proper speed (8 rph).
Check wheel drive motor and chain.
Reactivation inlet over
temperature fault
Reactivation air flow is
low.
Inspect reactivation blower for blockage.
Inspect reactivation blower damper position.
Inspect reactivation filters for clogging.
Gas modulation valve
malfunction Check for correct control signal.
Check for mechanical problem with valve.
High gas supply pressure.
Check supply pressure.
Check gas pressure regulator setting.
Thermocouple for high
over temperature switch
has failed.
Inspect sensor and wiring. Replace as
necessary.
Blower and / or wheel
drive motor is not
running
Motor overload has
tripped.
Inspect blowers and motors for obstructions,
remove obstruction, and reset with button on
starter.