Over time, an air filter can become dirty and need to be cleaned or replaced. Dirty air filters can restrict air and cause burners to operate inefficiently, restrict the capacity of generators or cause heat exchangers to not function correctly or overheat. Always replace an air filter with the correct one for the application and never operate without a filter.

Some controllers have an option to idle a furnace for a weekend either using a preprogrammed ‘Idle’ function or by making a special idle recipe. In either case, running an idle recipe will bring the furnace down to a lower cost-saving idle temperature and then slowly ramp it back up so that it is at operating temperature just in time for the Monday shift without the need for an operator to set temperatures ahead of time. Consult your controller instructions if you are unsure.

Many electronic components found inside electrical cabinets fail or can become unreliable above 130 degrees F. Cabinet temperatures should be maintained well below this threshold, keeping in mind that many of the components that need protection from heat actually generate heat themselves. Particularly in a heat treating environment, cabinet cooling systems should be strongly considered and regularly maintained to prevent downtime.