Johnson Controls/PENN Refrigeration Controls & Controllers > Temperature > Electronic > MR Series

MR Series: Defrost Control Modules

Description

The MR Series Controls are versatile, microprocessor-based, multifunction, programmable temperature controls designed for use with hot gas or electric heat defrost in both refrigeration and freezer units. The MR series incorporates control functions such as compressor control, defrost management, fan management, and alarm management.

MR1 - Provides temperature and alarm management functions. It can replace a temperature control and digital temperature readout. 

MR2 - Provides temperature, alarm, and defrost cycle management. The MR2 control performs defrost cycle management using time-based, passive, off cycle defrost. It can replace a temperature control, a digital temperature readout, and a defrost timer. 

MR4 - Provides temperature, alarm, defrost, and evaporator fan management. The MR4 Series provides defrost cycle management with hot gas or electric heat defrost and defrost termination based on time or temperature. The MR4 Series consolidates the functions of a temperature control, a digital temperature readout, a defrost cycle timer, and a defrost termination device.

Features

• Single package provides the functionality of multiple components at a cost-effective price
• Alarm management functions provide local alarm display and an alarm output relay that can be used to trigger a remote alarm or dial-out modem
• Accurate, interchangeable temperature sensor provides accurate control performance with up to 300 feet of wiring (an adjustable temperature offset is provided for longer wiring)
• Easily readable LED display displays temperature and other functions quickly and clearly