Munters MX2 80 - Fault Tracing List, Steam Heater Unit

Faultsymptom Indicators Possiblecause Correctiveaction
P-band,I-timeorhysteresisare
incorrectlyset.
Check theseparameters.The unit is runningbut is not
reducingthehumidity.
–Humidity Deviation
Therotoriswornout. ContactMunters service.
Table 7.1 Fault tracing list, d ehumidifier
7.3 Faulttracinglist,steamheaterunit
The f ault tracing list below pr ovides help in identifying faults related to th e steam heater unit.
Before contacting Munters service, go through the list below and rectify the fault if possible.
Faultsymptom Possible cause Correctiveaction
General
Incorrectsteam pressure. Check thatpressureindicated on manometeris within the
workinglimits
(<10bargoverpressure).
Blockedsteamtrap. Checkthefunctionofthesteamtrapandreplaceitif
necessary.
Incorrectsteam temperature. Check thatthetemperature indicatedon the thermometer
correspondstothelinepressure.
Closed shut-offvalve. Check that theshut-offvalvesareopen.
Themodulatingsteamvalveremains closed. Checkthatthemodulatingvalveisoperatingcorrectly.
Blockedsteampipes. Checkthesteampipeworkforblockage.
Lowornoreactivationheat.
Leakingsteampipes. Checkthesteampipeworksforleaks.
Lossofperformance
Checkthesteampressure andtemperaturein theheater.Steam reactivationheatermalfunction.
Checkthatthesteampipeworkisnotblocked orleaking.
Themodulatingsteamvalvedoesnotopen
fully.
Check thecontroller forregulationof themodulating valve
and the signalto themodulatingvalve.
The unit is operating, but is notcontrollingair
humidity.
Cloggedfilter or clogged steam trap. Cleanthefilter and steam trap.
Performancevariations
The steampressurevaries. Stabilisethesteam pressure.The unit is operating,but air humidity varies.
Othercause ContactMunters service.
Table 7.2 Fault tracing list, steam heater unit
190TEN–108 9–G1412 Faulttracing 47