Major Alarm

A Major Alarm consists of any of the following situations which cause the Master Relay to open immediately and stop all Dryer functions:

• Opening of the High-Limit Thermostat due to excessive drying air temperature;
• Opening of an overload relay contact protecting any Motors, due to an overload or low voltage condition, causing a higher-than-allowable current or amperage flow through the relay contacts.
• Opening of an overload (if the overload is wired into the system) protecting an auxiliary conveyor motor, due to an overload or low-voltage condition, causing a higher-than-allowable current or amperage flow through the relay contacts;
• Opening the Rear Plenum Door while the Dryer is operating, causing the Door Safety Switch to shut down the Dryer immediately;
• Exhaust air (being monitored for temperature) exceeds 210° F [98.89°C], thereby causing the Exhaust Air High Temperature Switch to shut down the Dryer so the cause of the excessive heat can be determined;
• A momentary power failure.