Max-Ox MX-900B Operator's Manual page 49

• Boiler High Limit: Initiates at boiler shell Aquastat 205°F set-point
• Boiler Low Water Cutoff: Initiates upon loss of boiler water level
• Stack High Limit: Initiates if stack temperature does not lower to
below 500 °F upon completion of an automatic power cut-back
maneuver initiated at a stack temperature of 520 °F.
• Burner Front Access Door Open: Initiates if gate position is
opposite its required position
• Burner Rear Access Door Open : Initiates if gate position is
opposite its required position
Alarm Acknowledge
• Press Alarm Ack. icon to acknowledge alarm
Keypad Entry Screen
Keypad Entry Screen
• Used as a touch keypad for operator entry of control system set-
points. Keypad functions are analogous to those found on a Personal
Computer keyboard.
Max-Ox™ MX-900B Operators Manual, Rev. 0
Page 49 of 54