ICM151 Random Start Timer (6-600 Second Knob Adjust. Delay)

Random Start Timers("Delay on make/delay on break") are ideal for use in compressor staging and to stagger-start multiple rooftop units. Helps to reduce power surges. No need to wait for the 5-minute delay typical of delay on make timers.

Features

• UL 873 recognition as compressor controller
• 6-600 seconds knob adjustable time delay
• Compressor lockout/anti-short cycle timer with random start features plus:
  • Safety switch lockout
  • Remote thermostat reset
• Reduces nuisance lockouts/service calls

Mode of Operation - Upon application of power, the delay on make period begins. Once the delay is complete, the unit energizes. Upon opening of thermostat or loss of power, the load is de-energized and the anti-short cycle period begins. The compressor will not start again during the delay period.

Safety Switch - Upon interruption of power to the compressor via the presence limit switch(es), the compressor will be locked out until the lockout delay expires and the control is reset by cycling the thermostat OFF then ON, with the safety circuit re-closed.