Defrost control is field adjustable for 120V or 240V operation and shall have defrost initiation times settable to the quarter hour via captive trippers at 15 minute intervals. The defrost timer is housed in a NEMA 3R indoor/outdoor plastic enclosure. The relay output is 40A Resistive, 2HP @ 250VAC. Defrost terminations are completed by time and a remote temperature or pressure switch.
Modified Industry Description
AUTO VOLTAGE DEFROST CONTROL
Intermatic® Grasslin® DTAV40 DTAV40 Auto Voltage Defrost Timer, 15 min to 23 hr/45 min Defrost, 120 to 240 VAC, 1, 2 hp, DPST/SPST Contact Form, 2 Poles
The grasslin DTAV40 series auto voltage defrost timer is applicable to air defrost (compressor shutdown) and electric or hot gas defrost systems where the defrost is terminated by the timer. If the coil is frost free, the timers can also be terminated by temperature or pressure switches before the programmed defrost termination time has been reached. The time termination functions as a fail-safe and terminates the defrost cycle if the temperature or pressure switch fails to do so.