FM-71-B Hansen Frost Master Defrost Control, 115 V 50/60 Hz, 7-Day Clock

The Hansen Frost Master® is an easy-to-use defrost controller for efficient removal of frost accumulation on evaporator coil surfaces. This controller uses simple, reliable solid-state electronics with a precision quartz time clock and time adjusting slide knobs to sequentially operate through logical defrost steps for smooth but complete and effective defrosting. The SPDT relays facilitate flexible connection of solenoid valves and control relays. Defrost mode and step times are easily viewed through the clear cover of the NEMA 4 enclosure. Typically, one controller is used per defrost control valve group.

KEY FEATURES

• User friendly
• SPDT relays, 10 amp switch rating
• Entire program always visible
• Battery back-up
• Terminals for optional sensor defrost initiation
• Terminals for optional sensor defrost termination
• Staggered defrosting is simple
• 24 hour or 7-day scheduling
• Precision quartz time clock